Cisco Systems SLM248G4PS, SLM224G4PS User Manual

Download

24-Port or 48-Port 10/100 + 4-Port Gigabit Smart Switch with Resilient Clustering Technology and PoE

USER GUIDE

BUSINESS SERIES

Model: SLM224G4PS, SLM248G4PS

About This Guide

Icon Descriptions

While reading through the User Guide you may see various icons that call attention to specific items. Below is a description of these icons:

NOTE: This check mark indicates that there is

a note of interest and is something that you should pay special attention to while using the product.

WARNING: This exclamation point indicates

that there is a caution or warning and it is something that could damage your property or product.

About This Guide

WEB: This globe icon indicates a noteworthy

website address or e-mail address.

Online Resources

Website addresses in this document are listed without http:// in front of the address because most current web browsers do not require it. If you use an older web browser, you may have to add http:// in front of the web address.

Resource Website

Linksys www.linksys.com

Linksys International www.linksys.com/international

Glossary www.linksys.com/glossary

Network Security www.linksys.com/security

Linksys is a registered trademark or trademark of Cisco Systems, Inc. and/ or its affiliates in the U.S. and certain other countries. Copyright © 2007 Cisco Systems, Inc. All rights reserved. Other brands and product names are trademarks or registered trademarks of their respective holders.

24/48-Port 10/100 + 4-Port Gigabit Smart Switch with Resilient Clustering Technology and PoE

Table of Contents

Chapter 1: Introduction 1

Chapter 2: Product Overview

SLM248G4PS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Front Panel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Back Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

SLM224G4PS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Front Panel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Back Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Chapter 3: Installation 5

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Pre-Installation Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Fast Ethernet Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Full-Duplex Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

1000BASE-T Cable Requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Positioning the Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Placement Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Desktop Placement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Rack-Mount Placement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Hardware Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Uplinking the Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Conguring Stack Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Reassigning a Slave Unit as the Master Unit . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Replacing a Stacked Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . PB

Chapter 4: Conguration Using the Console Interface 9

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Using the HyperTerminal Application. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Using telnet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

How to Use the Console Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

Switch Main Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

System Conguration Menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

Port Status Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15

Port Conguration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15

System Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

Help . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

Logout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

Chapter 5: Conguration Using the Web-based Utility 17

Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17

Setup > Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17

Setup > Zoom. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18

24/48-Port 10/100 + 4-Port Gigabit Smart Switch with Resilient Clustering Technology and PoE

iii

Table of Contents

Setup > Network Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18

Setup > Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19

Setup > Stack Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20

Port Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20

Port Management > Port Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20

Port Management > Link Aggregation . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22

Port Management > LACP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23

Port Management > PoE Power Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . .23

VLAN Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24

VLAN Management > Create VLAN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24

VLAN Management > Port Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24

VLAN Management > Port to VLAN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25

VLAN Management > VLAN to Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25

Statistics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26

Statistics > RMON Statistics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26

Statistics > RMON History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26

Statistics > RMON Alarms. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28

Statistics > RMON Events . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29

Statistics > Port Utilization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29

Statistics > Interface Statistics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29

Security. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30

Security > 802.1x Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30

Security > Port Security . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31

Security > Storm Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32

Security > RADIUS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33

QoS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33

QoS > CoS Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34

QoS > Queue Settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34

QoS > DSCP Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35

QoS > Bandwidth. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35

QoS > Basic Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35

Spanning Tree. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36

Spanning Tree > STP Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36

Spanning Tree > Global STP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36

Spanning Tree > STP Port Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37

Multicast . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38

Multicast > IGMP Snooping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38

Multicast > Bridge Multicast . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38

Multicast > Bridge Multicast Forward All . . . . . . . . . . . . . . . . . . . . . . . . . . . .39

SNMP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39

SNMP > Global Parameters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39

SNMP > Views . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40

SNMP > Group Prole . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40

24/48-Port 10/100 + 4-Port Gigabit Smart Switch with Resilient Clustering Technology and PoE

Table of Contents

SNMP > Group Membership. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41

SNMP > Communities. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41

SNMP > Notication Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42

SNMP > Notication Recipient . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42

Admin. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43

Admin > User Authentication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43

Admin > Static Address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44

Admin > Dynamic Address. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44

Admin > Port Mirroring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45

Admin > Cable Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45

Admin > Save Conguration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46

Admin > Firmware Upgrade . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47

Admin > Reboot . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47

Admin > Factory Default . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47

Admin > Logging. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48

Admin > Server Logs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48

Admin > Memory Logs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48

Admin > Flash Logs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49

Logout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49

Appendix A: About Gigabit Ethernet and Fiber Optic Cabling 50

Gigabit Ethernet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .50

Fiber Optic Cabling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .50

Appendix B: About Switch Stacking 51

Standalone Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .51

Stack Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .51

Stack Building Quick Start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .51

Normal (Self-Ordering) Stack . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .51

Manually Ordered Stack . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .51

Stack Resiliency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52

Advanced Stacking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52

Unit IDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52

Stack Units Startup Process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53

User Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .54

Stacking Examples. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .54

Replacing a Failed Stack Member in a Running Stack . . . . . . . . . . . . . . . . . . . .54

Stack Master Failure and Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . .55

Splitting a Stack. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .56

Merging Two Stacks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .57

Stacking Cable Failure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .58

Inserting Too Many Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .58

Standalone Unit Inserted into a Running Stack . . . . . . . . . . . . . . . . . . . . . . . .58

24/48-Port 10/100 + 4-Port Gigabit Smart Switch with Resilient Clustering Technology and PoE

Table of Contents

Appendix C: Glossary 59

Appendix D: Specications 6

Appendix E: Warranty Information 6

Exclusions and Limitations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .65

Obtaining Warranty Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .65

Technical Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .66

Appendix F: Regulatory Information 67

FCC Statement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .67

Safety Notices. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .67

Industry Canada Statement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .67

Avis d’ Industrie Canada . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .67

User Information for Consumer Products Covered by EU Directive 2002/96/EC on Waste

Electric and Electronic Equipment (WEEE) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .68

Appendix G: Contact Information 72

24/48-Port 10/100 + 4-Port Gigabit Smart Switch with Resilient Clustering Technology and PoE

Chapter 1

Chapter 1: Introduction

Thank you for choosing the Linksys 24/48-Port 10/100 + 4-Port Gigabit Smart Switch with Resilient Clustering Technology and PoE.

These switches allow you to expand your network securely. User control is secured using 802.1x security using a RADIUS authentication mechanism and can also be controlled using MAC filtering.

For Wireless or VoIP deployments, the SLM224G4PS and SLM248G4PS Switches support the IEEE802.3af standard for Power over Ethernet (PoE), allowing you to attach PoEenabled devices to your network. These devices need no additional power cables or nearby power outlets, resulting in simpler and less expensive installation. PoE support also allows devices like cameras and Wireless Access Points to be positioned in optimal locations, such as in ceilings and walls—even outdoors.

Introduction

Extensive QoS features makes the solution ideal for realtime applications like Voice and Video. The four priority queues together with the Weighted Round Robin and Strict Priority scheduling techniques facilitate efficient co-existence of real-time traffic with data traffic allowing them each to meet their QoS needs. Individual users or applications can be prioritized above others using various Class of Service options—by port, Layer 2 priority (802.1p), and Layer 3 priority (TOS or DSCP). Intelligent Broadcast and Multicast storm control minimize and contain the effects of these types of traffic on regular traffic. IGMP Snooping limits bandwidth-intensive video traffic to only the requestors without flooding to all users. Incoming traffic can be policed and outgoing traffic can be shaped allowing you to control network access and traffic flow.

There are features that allow you to expand and grow your network of switches. Link aggregation allows multiple high-bandwidth trunks between switches to be set up. This also provides a level of reliability in that the system continues to operate if one of the links breaks. Spanning Tree (STP) and Fast Link allow you to build a mesh of switches increasing the availibility of the system.

The rich management functionality of the Smart Switches with Resilient Clustering Technology includes SNMP, RMON, Telnet, and HTTP Management options, allowing you to flexibly integrate and manage these devices in your network.

NOTE: Throughout this User Guide, the term

reset refers to cycling the power to the Switch;

that is, powering the Switch off, then on again.

24/48-Port 10/100 + 4-Port Gigabit Smart Switch with Resilient Clustering Technology and PoE

Chapter 2

Product Overview

Chapter 2: Product Overview

SLM248G4PS

Front Panel

The Switch LEDs and ports are located on the front panel.

Front Panel of the SLM248G4PS

System (Green/Amber) Lights up green to

indicate that the Switch is powered on. Lights up amber while the Switch is performing a system self-test. Blinks amber if the self-test fails.

LINK/ACT (1-12, 25-36) (Green/Amber) Lights

up green to indicate a functional 10/100 Mbps network link through the corresponding port with an attached device that does not support Power over Ethernet (PoE). Lights up amber to indicate a functional 10/100 Mbps network link through the corresponding port with an attached PoE device. Blinks green while the Switch is actively sending or receiving data over that port.

LINK/ACT (13-24, 37-48) (Green) Lights up to

indicate a functional 10/100 Mbps network link through the corresponding port with an attached device. Blinks while the Switch is actively sending or receiving data over that port.

G1-G4 (Green/Amber) Blinks green when the

Switch is actively sending or receiving data at 10/100 Mbps over the corresponding port (G1 through G4). Blinks yellow when the Switch is actively sending or receiving data at 1000 Gbps over the corresponding port (G1 through G4).

Stack (G1-G4) (Amber) Lights up to indicate

that the corresponding port (G1 through G4) is linked to another switch. (Two of these LEDs will be lit if switch stacking is properly configured.)

Ethernet 1-48 The Switch is equipped with 48

auto-sensing, Ethernet network ports, which use RJ-45 connectors. The Fast Ethernet ports support network speeds of 10 Mbps or 100 Mbps. They can operate in half- and full-duplex modes. Auto-sensing technology enables each port to automatically detect the speed of the device connected to it (10 Mbps or 100 Mbps), and adjust its speed and duplex accordingly.

G1-G4

sensing Gigabit Ethernet network ports, which use RJ-45 connectors. The Gigabit Ethernet ports support network speeds of 10 Mbps, 100 Mbps, or 1000 Mbps. They can operate in half- and full-duplex modes. Auto-sensing technology enables each port to automatically detect the speed of the device connected to it (10 Mbps, 100 Mbps, or 1000 Mbps), and adjust its speed and duplex accordingly.

miniGBIC (1-2) The miniGBIC (gigabit interface

converter) port is a connection point for a miniGBIC expansion module, so the Switch can be uplinked via fiber to another switch. The MiniGBIC port provides a link to a high-speed network segment or individual workstation at speeds of up to 1000 Mbps.

To establish a Gigabit Ethernet connection using a miniGBIC port, you will need to install a MGBT1, MGBSX1, or MGBLH1 Gigabit expansion module and use Category 5e cabling or fiber optic cabling.

To establish a Fast Ethernet connection using a miniGBIC port, you will need to install a MFEFX1 (100BASE-FX) or MFELX1 (100BASE-LX) 100SFP Transceiver and use fiber optic cabling.

Stack ID Displays the S

the Switch is in stack mode.

Stack Master (Amber)

the stack Master during stack mode.

NOTE: On the SLM248G4PS, MiniGBIC ports are

shared with Gigabit Ethernet ports. If a miniGBIC port is used, then the shared Gigabit Ethernet port on the Switch cannot be used. The following table defines the shared port mapping of the SLM248G4PS Switch.

miniGBIC Port Gigabit Port

The Switch is equipped with 4 auto-

witch’s unit ID number if

Lights up if the switch is

SLM248G4PS Shared Port Mapping

miniGBIC 1 Port G3

miniGBIC 2 Port G4

24/48-Port 10/100 + 4-Port Gigabit Smart Switch with Resilient Clustering Technology and PoE

Chapter 2

Product Overview

Back Panel

The Console port and power port are located on the back panel of the Switch

CONSOLE The Console port is a serial port that

allows you to connect to a computer’s serial port (for configuration purposes) using the provided serial cable. You can use HyperTerminal to manage the Switch using the console port.

POWER The Power port is where you connect

the AC power.

Back Panel of the SLM248G4PS

SLM224G4PS

Front Panel

The Switch’s LEDs and ports are located on the front panel.

Front Panel of the SLM224G4PS

Stack (G1-G4) (Amber) Lights up to indicate

that the corresponding port (G1 through G4) is linked to another switch. (Two of these LEDs will be lit if switch stacking is properly configured.)

Ethernet 1-24 The Switch is equipped with 24

G1-G4

miniGBIC (1-2) The miniGBIC (gigabit interface

The Switch is equipped with 4 auto-

System (Green/Amber) Lights up green to

indicate that the Switch is powered on. Lights up amber while the Switch is performing a system self-test. Blinks amber if the self-test fails.

LINK/ACT (1-24) (Green) Lights up to indicate

a functional 10/100 Mbps network link through the corresponding port (1 through 24) with an attached device. Blinks while the Switch is actively sending or receiving data over that port.

Power over Ethernet (1-6, 13-18)

up to indicate that power is being supplied to an attached powered device on the corresponding port (1 through 6, or 13 through 18).

LINK/ACT (G1-G4) (Green) Blinks when the

Switch is actively sending or receiving data over the corresponding port (G1 through G4).

1000M (G1-G4) (Yellow)

functional 1 Gbps connection on the corresponding port (G1 through G4) with an attached device.

(Amber) Lights

Lights up to indicate a

To establish a Gigabit Ethernet connection using a miniGBIC port, you will need to install a MGBT1, MGBSX1, or MGBLH1 Gigabit expansion module and use Category 5e cabling or fiber optic cabling.

To establish a Fast Ethernet connection using a miniGBIC port, you will need to install a MFEFX1 (100BASE-FX) or MFELX1 (100BASE-LX) 100SFP Transceiver and use fiber optic cabling.

Stack ID Displays the S

the Switch is in stack mode.

Stack Master (Amber)

the stack Master during stack mode.

NOTE:

shared with standard ports. If a miniGBIC port is used, then the shared standard port on the Switch cannot be used. The following table defines the shared port mapping of the SLM224G4PS Switch.

On the SLM224G4PS, MiniGBIC ports are

witch’s unit ID number if

Lights up if the switch is

24/48-Port 10/100 + 4-Port Gigabit Smart Switch with Resilient Clustering Technology and PoE

Chapter 2

SLM224G4PS Shared Port Mapping

miniGBIC Port Standard Port

miniGBIC 1 G3

miniGBIC 2 G4

Back Panel

The Console port and power port are located on the back panel of the Switch.

Back Panel of the SLM224G4PS

CONSOLE The Console port is a serial port that

allows you to connect to a computer’s serial port (for configuration purposes) using the provided serial cable. You can use HyperTerminal to manage the Switch using the console port.

POWER The Power port is where you connect

the AC power.

Product Overview

24/48-Port 10/100 + 4-Port Gigabit Smart Switch with Resilient Clustering Technology and PoE

Chapter 3

Installation

Chapter 3: Installation

Overview

This chapter will explain how to connect network devices to the Switch. The following diagram shows a typical network configuration.

Cable/DSL

Internet

When you connect your network devices, make sure you do not exceed the maximum cabling distances, which are listed in the following table:

Modem Router Wireless Access Point Server

10/100/1000

Desktop

Typical Network Configuration for the SLM248G4PS

Maximum Cabling Distances

From To Maximum Distance

Switch Switch or Hub 100 meters (328 feet)

10/100

Notebook

Uplink via Fiber to

Switch

Pre-Installation Considerations

Fast Ethernet Considerations

If you are using the Switch for Fast Ethernet (100 Mbps) applications, you must observe the following guidelines:

Full-Duplex Considerations

The Switch provides full-duplex support for its RJ-45 ports. Full-duplex operation allows data to be sent and received simultaneously, doubling a port’s potential data throughput. If you will be using the Switch in full-duplex mode, the maximum cable length using Category 5 cable is 328 feet (100 meters).

1000BASE-T Cable Requirements

All Category 5 UTP cables that are used for 100BASE-TX connections should also work for 1000BASE-T, providing that all four wire pairs are connected. However, it is recommended that for all critical connections, or any new cable installations, Category 5e (enhanced Category

5) or Category 6 cable should be used. The Category 5e specification includes test parameters that are only recommendations for Category 5. Therefore, the first step in preparing existing Category 5 cabling for running 1000BASE-T is a simple test of the cable installation to be sure that it complies with the IEEE 802.3ab standards.

Positioning the Switch

Before you choose a location for the Switch, observe the following guidelines:

Make sure that the Switch is accessible and that the

Hub† Hub 5 meters (16.4 feet)

Switch or Hub† Computer 100 meters (328 feet)

A hub refers to any type of 100 Mbps hub. A 10 Mbps hub connected

†

to another 10 Mbps hub can span up to 100 meters (328 feet).

•

cables can be connected easily.

Keep cabling away from sources of electrical noise,

•

power lines, and fluorescent lighting fixtures.

Position the Switch away from water and moisture

•

sources.

To ensure adequate air flow around the Switch, be

•

sure to provide a minimum clearance of two inches (50 mm).

Do not stack free-standing Switches more than four

•

units high.

Placement Options

There are two ways to physically install the Switch, either set the Switch on its four rubber feet for desktop placement or mount the switch in a standard-sized, 19-inch wide, 1Uhigh rack for rack-mount placement.

24/48-Port 10/100 + 4-Port Gigabit Smart Switch with Resilient Clustering Technology and PoE

Chapter 3

Installation

Desktop Placement

Attach the rubber feet to the recessed areas on the

•

bottom of the Switch.

Place the Switch on a desktop near an AC power source.

•

Keep enough ventilation space for the switch and

•

check the environmental restrictions mentioned in the Specifications Appendix as you are placing the Switch.

Connect the Switch to network devices according to

•

the Hardware Installation instructions below.

Attaching the Switch’s Rubber Feet

Rack-Mount Placement

To rack-mount the Switch in any standard 19-inch wide, 1U-high rack, follow the instructions described below.

Place the Switch on a hard flat surface with the front

1. panel facing you.

Attach a rack–mount bracket to one side of the Switch

2. with the supplied screws and secure the bracket tightly.

Attaching the Brackets

Follow the same steps to attach the other bracket to

3. the opposite side.

After the brackets are attached to the Switch, use

4. suitable screws to securely attach the brackets to any standard 19-inch rack.

When rack-mounting the Switch, please observe the following guidelines

Elevated Operating Ambient If installed in a closed

•

or multi-unit rack assembly, the operating ambient temperature of the rack environment may be greater than room ambient. Therefore, consideration should be given to installing the equipment in an environment compatible with the maximum ambient temperature (Tma) specified by the manufacturer.

Reduced Air Flow Installation of the equipment

•

in a rack should be such that the amount of air flow required for safe operation of the equipment is not compromised.

Mechanical Loading Mounting of the equipment in

•

the rack should be such that a hazardous condition is not achieved due to uneven mechanical loading.

Circuit Overloading Consideration should be given

•

to the connection of the equipment to the supply circuit and the effect that overloading of the circuits might have on overcurrent protection and supply wiring. Appropriate consideration of equipment nameplate ratings should be used when addressing this concern.

Reliable Earthing Reliable earthing of rack-mounted

•

equipment should be maintained. Particular attention should be given to supply connections other than direct connections to the branch circuit (e.g. use of power strips).

Mounting in Rack

Connect the Switch to network devices according to

5. the Hardware Installation instructions below.

Hardware Installation

To connect network devices to the Switch, follow these instructions:

Make sure all the devices you will connect to the Switch

1. are powered off.

For a 10/100 Mbps device:

Connect a Category 5 Ethernet network cable to

•

one of the numbered ports on the Switch.

24/48-Port 10/100 + 4-Port Gigabit Smart Switch with Resilient Clustering Technology and PoE

Chapter 3

Installation

For a 1000 Mbps device:

Connect a Category 5e Ethernet network cable to

•

port G1, G2, G3, or G4 on the Switch.

For a 10/100 Mbps PoE device:

SLM248G4PS: Connect a Category 5e Ethernet

•

network cable to one of ports 1-12 or ports 25-36 on the Switch.

SLM224G4PS: Connect a Category 5e Ethernet

•

network cable to one of ports 1-6 or ports 13-18 on the Switch.

Connect the other end of the network cable to a PC or

3. other network device.

Repeat steps 2 and 3 to connect additional devices.

If a 802.3af-compliant PoE device is connected to one of the Switch’s PoE ports, the Switch will automatically supply the required power to the device.

If you are using a miniGBIC port, then connect a

5. miniGBIC module to a miniGBIC port. For more detailed instructions, refer to “Uplinking the Switch“.

Connect the supplied power cord to the Switch’s

6. power port, and plug the other end into an electrical outlet. When connecting power, always use a surge protector.

IMPORTANT: Make sure you use the power

cord that is supplied with the Switch. Use of a different power cord could damage the Switch.

Power on the devices connected to the Switch. Each

7. active port’s corresponding LED will light up on the Switch.

Uplinking the Switch

Ethernet Ports Shared with miniGBIC Ports

Switch

SLM248G4PS G3 G4

SLM224G4PS G3 G4

To establish a Gigabit Ethernet connection using a miniGBIC port, you will need to install a MGBT1, MGBSX1, or MGBLH1 Gigabit expansion module and use Category 5e cabling or fiber optic cabling.

To establish a Fast Ethernet connection using a miniGBIC port, you will need to install a MFEFX1 (100BASE-FX) or MFELX1 (100BASE-LX) 100SFP Transceiver and use fiber optic cabling.

The hardware installation is complete. Proceed to “Chapter 5: Configuration Using the Web-based Utility”, for directions on how to set up the Switch.

Port Shared with

miniGBIC1

Port Shared with

miniGBIC2

Configuring Stack Mode

The SLM224G4PS and SLM248G4PS Switches can operate in either standalone mode or stack mode. In standalone mode, the switch operates independently of other switches. In stack mode, multiple Stackable Switches are connected together to effectively form a single switch. The default operating mode is stack mode.

A Switch stack can contain any combination of SLM224G4PS and SLM248G4PS units, with the following limits:

SLM224G4PS only: Maximum of 6 units

•

SLM248G4PS only: Maximum of 4 units

•

SLM224G4PS and SLM248G4PS: Maximum of 192

•

10/100 ports (total among all switches)

To uplink the Switch using a 1000 Mbps Ethernet port, connect one end of a Cat 5e (or better) Ethernet network cable to a Gigabit port, then connect the other end of the cable into the peripheral device’s uplink port. MDI/MDIX will automatically detect the speed and cable type.

To uplink the Switch using the miniGBIC port, connect a miniGBIC module to a miniGBIC port whose shared Ethernet port is not being used (a miniGBIC port and its shared Ethernet port cannot be used at the same time). The following table shows which Ethernet ports are shared with the miniGBIC ports.

24/48-Port 10/100 + 4-Port Gigabit Smart Switch with Resilient Clustering Technology and PoE

Each switch in a stack is assigned a unique unit number. These numbers indicate the switch’s status in the stack:

Unit 1: The switch is the Master unit. The master handles

•

the management functions for the entire stack.

Unit 2: The switch is the Backup Master unit. The backup

•

master automatically becomes the new master if the master fails.

Unit 3, 4, 5, 6: The switch is a Slave unit. (Depending on

•

the switch models used, 5 and 6 may not be valid.)

The Switches are connected together using a pair of Gigabit ports on each Switch: G1 and G2, G3 and G4, or miniGBIC1 and miniGBIC2. Linksys recommends using Gigabit ports G1 and G2 (the default stacking ports). Connections are made using Category 5e Ethernet network cables.

To set up a stack with six switches, follow these steps:

Chapter 3

Connect one end of a Category 5e Ethernet network

1. cable to port G1 on Unit 1.

Connect the cable’s other end to port G2 on Unit 2.

Connect one end of a Category 5e Ethernet network

3. cable to port G1 on Unit 2.

Connect the cable’s other end to port G2 on Unit 3.

Connect one end of a Category 5e Ethernet network

5. cable to port G1 on Unit 3.

Connect the cable’s other end to port G2 on Unit 4.

Connect one end of a Category 5e Ethernet network

7. cable to port G1 on Unit 4.

Connect the cable’s other end to port G2 on Unit

Connect one end of a Category 5e Ethernet network

9. cable to port G1 on Unit 5.

Connect the cable’s other end to port G2 on Unit 6.

10.

Connect one end of a Category 5e Ethernet network

11. cable to port G1 on Unit 6.

Connect the cable’s other end to port G2 on Unit 1.

12.

Installation

Connect Unit 2 to Unit 3

Connect port G1 on Unit 3 to port G2 on Unit 1.

For a stack with less than 6 switches, the steps are similar except that port G1 of the last switch in the stack must be connected back to port G2 of the first switch in the stack.

The following is an example of setting up a stacked configuration using three SLM248G4PS switches.

Connect port G1 on Unit 1 to port G2 on Unit 2.

Connect Unit 1 to Unit 2

Connect port G1 on Unit 2 to port G2 on Unit 3.

Connect Unit 3 to Unit 1

For detailed information on switch stacking, refer to “Appendix B: About Switch Stacking.”

For more information on stack configuration using the Console Interface, refer to “Stack Configuration” and “System Mode” in “Chapter 4: Configuration Using the Console Interface” .

For more information on stack configuration using the Web-based Utility, refer to “Setup > Stack Management” in “Chapter 5: Configuration Using the Web-based Utility”.

Reassigning a Slave Unit as the Master Unit

You can reassign a slave unit so that it becomes the master unit. To do this, you swap their unit numbers. For example, to make slave unit 5 be the master, you change the master’s unit number from 1 to 5 and the slave’s unit number from 5 to 1. To change the unit numbers, you can use either the Web-based utility or the console interface.

The following describes the procedure for changing a slave unit into the master unit. In this example, unit 5 is made the master unit.

Swap the unit numbers. That is, change the unit

1. number of the current master from 1 to 5, and change the unit number of slave unit 5 from 5 to 1. (The order in which these are performed is not significant.)

Power off the new unit 5 (the former master unit).

24/48-Port 10/100 + 4-Port Gigabit Smart Switch with Resilient Clustering Technology and PoE

Chapter 4

Chapter 4: Configuration Using the

Configuration Using the Console Interface

Set the serial port settings as follows, then click OK.

Bits per Second: 38400

Databits: 8

Console Interface

Overview

The Switch features a menu-driven console interface that lets you perform basic switch configuration and easily manage your network. To use the console interface, you either run the HyperTerminal application to configure a serial connection through the Switch’s console port, or run a telnet session over an Ethernet connection.

Using the HyperTerminal Application

To access the console interface using HyperTerminal:

Click the Start button.

Select All Programs > Accessories > Communications

2. > HyperTerminal.

Start > All Programs > Accessories > Communications > HyperTerminal

Enter a name for this connection. Select an icon for the

3. application, then click OK.

Parity: None

Stop bits: 1

Flow control: None

HyperTerminal Properties Screen

The Login screen appears. Proceed to the “Login”

6. section below.

Using telnet

In addition to using HyperTerminal to operate the console interface through the Switch’s console port, you can also use a telnet session to operate the console interface through an Ethernet connection.

Click Start, then select All Programs > Accessories >

1. Command Prompt to open a command prompt.

At the prompt, enter telnet 192.168.1.254, then press

2. Enter.

The Login screen appears. Proceed to the “Login”

3. section below.

HyperTerminal Connection Description Screen

Select a port to communicate with the switch. Select

4. COM1 or COM2.

HyperTerminal Connect To Screen

24/48-Port 10/100 + 4-Port Gigabit Smart Switch with Resilient Clustering Technology and PoE

Chapter 4

Configuration Using the Console Interface

How to Use the Console Interface

The Console Interface consists of a hierarchical series of menu screens and settings screens. Each menu displays a list of options. Selecting an option brings up a settings screen where you can configure the relevant settings.

To select a menu option, either press the number of the option in the list (for example, press 5 to select Help from the Main Menu), or use the arrow keys to move up or down the list until the option is highlighted, then press Enter.

The lower portion of each settings screen lists the actions and navigation keys. The actions (Edit, Save, Quit) allow you to make changes to the settings. The navigation keys (Arrow Keys, Tab, Backspace, Space, Esc) allow you to highlight and select different items within the screen.

To change a setting, highlight Edit, then press Enter. Use the arrow keys to highlight the setting to be changed, then enter its new value (or press Space to toggle through the list of values). To save your changes and remain in the settings screen, highlight Save, then press Enter. To return to the previous screen, highlight Quit, then press Enter. To cancel all changes and return to the previous screen, press Esc, then select Quit.

Switch Main Menu

After successful login, the Main Menu screen appears. This screen displays six menu choices: System Configuration Menu, Port Status, Port Configuration, System Mode, Help, and Log Out.

Main Menu

System Configuration Menu

Login

The console interface starts by displaying the Login screen. The first time you open the console interface, use the default username admin and leave the password blank, then press the Enter key. You can set a password later from the User and Password Settings screen.

Console Login Screen

If you are using HyperTerminal, enter the username and password at the prompts. Then press Enter to log in.

If you are using telnet, use the arrow keys to select Edit and press Enter. Enter the username and password in the respective fields. Then press Esc to return to the Login screen. Use the arrow keys to select Execute and press Enter to complete the login process.

System Configuration Menu

The System Configuration Menu provides the following options:

System Information

Management Settings

User and Password Settings

Security Settings

IP Configuration

File Management

Restore System Default Settings

Reboot System

Stack Configuration

0. Back to Main Menu

24/48-Port 10/100 + 4-Port Gigabit Smart Switch with Resilient Clustering Technology and PoE

Chapter 4

System Information

From the System Information screen you can check current firmware versions and other general switch information.

System Information

Versions

Configuration Using the Console Interface

General System Information

Management Settings

The Management Settings screen displays the Serial Port Configuration option.

The Versions screen displays version-related information for each switch in the system.

Versions

Unit The unit number of the switch, from 1 to 6.

Status The status of the switch, either master or slave.

Software Version The version number of the software .

Boot Version The version number of the boot file.

Hardware Version The Switch’s current hardware setup.

General System Information

Management Settings

Serial Port Configuration

The Serial Port Configuration screen displays the current baud rate setting. To change the baud rate, select Edit, then use the spacebar to toggle through the different baud rates. Use the Save action to set the new baud rate.

The General System Information screen displays the System Description, System Up Time, System MAC Address, System Contact, System Name and System Location.

24/48-Port 10/100 + 4-Port Gigabit Smart Switch with Resilient Clustering Technology and PoE

Serial Port Configuration

Chapter 4

Configuration Using the Console Interface

User & Password Settings

The User & Password Settings screen displays all the user accounts defined on the system.

User & Password Settings

The default account is admin. You cannot edit this account (its user name and password cannot be changed). For security purposes, Linksys recommends creating at least one user account with a unique user name and password. You can create up to five user accounts total.

(When you create your first user account, it will appear as though you are editing the admin account; however, you are only The admin account is not overwritten or deleted.)

Once you have created a user account, you can edit it (change the user name and/or password) or delete it. If the system contains only one user account and you delete that account, the original admin account will reappear in its place. This is because the system must always have at least one account.

replacing the admin account with the new account.

Security Settings

The IP Configuration screen displays one option: Disable Active Management Access Profile.

Security Settings

Selecting this option will prompt you to confirm that you want to disable the active management access profile.

NOTE: This setting has no effect when

Management Access Rules are not defined.

IP Configuration

The IP Configuration screen displays three menu choices: IP Address Settings, HTTP Configuration, and Network Configuration.

To add a new user, use the arrow keys to select Edit, press Enter, then enter the new account’s user name and password in the Username and Password columns, and re-enter the password in the Password Again column to confirm the password.

To delete an existing user account, use the arrow keys to select Edit, press Enter, then delete the user name in the Username column.

To save your changes, press Esc, use the arrow keys to select Save, then press Enter.

24/48-Port 10/100 + 4-Port Gigabit Smart Switch with Resilient Clustering Technology and PoE

IP Configuration

Chapter 4

Configuration Using the Console Interface

IP Address Settings

The IP Address Settings screen allows you to set the IP information for the Switch.

IP Address Configuration

IP Address This sets the Switch’s IP Address. The default

setting is 192.168.1.254. If you change the IP address, verify that the address you enter is correct and does not conflict with another device on the network.

Subnet Mask This combined with the IP Address defines

the Switch’s network address.

Default Gateway This defines the IP Address for the

default gateway of the network.

Network Configuration

The Network Configuration screen offers a choice of two tests, Ping and TraceRoute.

Network Configuration

Ping The Ping screen displays the IP address of the

location you want to contact.

Management VLAN This is the ID number of the

Management VLAN.

DHCP Client The status of the DHCP client is displayed.

If you want the Switch to be a DHCP client, then select ENABLE. If you want to assign an static IP address to the Switch, then enter the IP settings and select DISABLE.

HTTP

The HTTP screen allows you to set the Hyper Text Transfer Protocol server (web server) information for the Switch.

HTTP

HTTP Server Enable or disable the Switch’s HTTP server

function.

HTTP Server port Set the TCP port that HTTP packets are

sent and received from.

Ping

Select Edit to change the IP address, and select Execute to begin the ping test.

After the ping test is complete, the Ping screen displays the IP address, status, and statistics of the ping test.

TraceRoute The TraceRoute screen displays the IP address

of the address whose route you want to trace.

TraceRoute

Select Edit to change the IP address, and select Execute to begin the traceroute test.

24/48-Port 10/100 + 4-Port Gigabit Smart Switch with Resilient Clustering Technology and PoE

Chapter 4

Configuration Using the Console Interface

After the traceroute test is complete, the TraceRoute screen displays the IP address, status, and statistics of the traceroute test.

File Management

The File Management screen allows you to upload or download files, such as the startup configuration, boot, or image file, using a TFTP server.

File Management

Source File Specify the location of the file to transfer.

Select one of the following:

TFTP If the file is located on a TFTP server.

•

Restore System Default Settings

To restore the Switch back to the factory default settings, select Restore System Default Settings and press Enter. A prompt appears in the lower part of the screen asking you to confirm the requested action. Press Y to continue or N to cancel the action.

Restore Default

Reboot System

If you want to restart the Switch, select Reboot System and press Enter. When you are prompted to confirm the action, press Y to continue or N to cancel the action.

Image If the file is a software code file.

•

Startup-config If the file is a configuration file.

•

Destination File Specify where the file is to be transferred.

Select one of the following:

TFTP If the file is to be uploaded to a TFTP server.

•

Image If the file is to be downloaded as a software

•

code file.

Startup-config If the file is a configuration file

•

Boot If the file is a boot file.

•

File Name Enter the name of the file to be uploaded or

downloaded.

IP Address Enter the IP address of the TFTP server that

will transfer the file.

Select Edit to change the settings. When your changes are complete, press Esc to return to the Action menu, and select Execute to upload or download the designated file. If you are downloading a new boot image, please follow these steps:

Download the new boot code. DO NOT RESET THE

1. DEVICE!

Reboot System

Stack Configuration

The Stack Configuration screen displays information about the switch stack and allows you to change those settings.

Download the new software image.

Reset the device now.

24/48-Port 10/100 + 4-Port Gigabit Smart Switch with Resilient Clustering Technology and PoE

Stack Configuration

Chapter 4

Configuration Using the Console Interface

Unit The unit number of the switch, from 1 to 6.

MAC Address The MAC address of the switch.

Software The version number of the software that runs

the switch.

Uplink The ID number of the switch that has an uplink

connection to this switch.

Downlink The ID number of the switch that has a

downlink connection from this switch.

Status The status of the switch, either master or slave.

ID After Reset The ID number that the Switch will have

after the next system reset. Values are Auto or 1 to 6.

Back to Main Menu

Select Back to Main Menu to exit the System Configuration Menu and return to the Main Menu screen.

Port Status Menu

The Port Status Menu displays three options: Port Status, PoE Status, and Back to Main Menu.

PoE Status

The PoE Status screen displays the following status information for each of the switch’s PoE ports: port number, port status, power allocation, and power consumption. This screen is read-only; to change a port’s PoE settings, use the Port Configuration screen.

PoE Status

Port Configuration

The Port Configuration Menu displays three options: Port Settings, PoE Settings, and Back to Main Menu.

Port Status Menu

Port Status

The Port Status screen displays the following status information for each of the switch’s ports: port number, port status, link status, speed and duplex mode, and flow control status. This screen is read-only; to change a port’s settings, use the Port Configuration screen.

Port Status

24/48-Port 10/100 + 4-Port Gigabit Smart Switch with Resilient Clustering Technology and PoE

Port Configuration

The Port Configuration screen allows you to change a port’s settings. You can enable or disable a port, or set its auto-negotiation status, speed and duplex mode, and flow control status.

Port Configuration Menu

Port Configuration

Chapter 4

Configuration Using the Console Interface

PoE Settings

The PoE Settingsscreen allows you to change a PoE port’s PoE settings. You can set a PoE port’s priority, or enable or disable PoE on a PoE port.

PoE Settings

System Mode

The System Mode screen displays information about the system mode:

Help

The Help screen explains how to navigate the various screens of the console interface.

Help

Logout

Select Logout to log out of the console interface.

System Mode

Current System Mode This is always set to Layer 2.

System Mode The system mode, either Stack or

Standalone. This cannot be changed.

Stacking Mode after Reset This indicates the mode,

Stack or Standalone, that the system will be in following the next system reset. The default mode is Stack.

24/48-Port 10/100 + 4-Port Gigabit Smart Switch with Resilient Clustering Technology and PoE

Chapter 5

Configuration Using the Web-based Utility

Chapter 5: Configuration Using the Web-based Utility

This chapter describes the features included in the Webbased Utility. All features shown in this chapter, unless specifically identified, are included in the all of Stackable Switches. Unique features for specific Switches are noted.

NOTE: The web-based utility is optimized for

a screen resolution of 1024 x 768. Internet Explorer version 5.5 or above is required.

To use the utility, open your web browser, enter http://192.168.1.254 in the Address field, then press Enter.

Address Bar

Each time you log in, the web-based utility first displays the Setup tab’s Summary screen. To access another screen, you first select the appropriate category from among the 11 tabs that appear at the top of the screen: Setup,

Port Management, VLAN Management, Statistics, Security, QoS, Spanning Tree, Multicast, SNMP, Admin,

and Logout. Then, select the desired screen from the list directly below the tab names.

Setup

The Setup tab contains the Summary, Zoom, Network Settings, Time, and Stack Management screens.

Setup > Summary

The Summary screen displays a summary of Switch information. The settings shown cannot be modified from the Summary screen; however, many of them can be modified from the Setup tab’s Network Settings screen.

NOTE: The default IP address is 192.168.1.254.

If you have changed the IP address or are using DHCP to assign it, enter the new IP address instead. The computer you use for configuration should be on the same subnet as the Switch.

The Login screen appears. Enter admin in the Username field and enter the password in the Password field. If this is the first time you are using the utility, leave the Password blank. Then press OK to log in. The Setup tab’s Summary screen appears.

(After you have completed your first login, f purposes it is recommended that you set a password at a later time. For detailed information on changing the password, refer to section “Admin > User Authentication.”

or security

Setup > Summary

The Summary screen has two sections: Device Information and System Information. These are described below.

Device Information

)

System Name Displays the name of the Switch, if one has

been entered on the Setup tab’s Network Settings screen.

IP Address The IP address assigned to the Switch. The

Switch’s default IP address is 192.168.1.254. This setting can be configured from the Setup tab’s Network Settings screen.

Subnet Mask The Subnet Mask assigned to the Switch.

The default is 255.255.255.0. This setting can be configured from the Setup tab’s Network Settings screen.

DNS Server The IP address of your ISP’s server that

translates the names of websites into IP addresses. This setting can be configured from the Setup tab’s Network Settings screen.

24/48-Port 10/100 + 4-Port Gigabit Smart Switch with Resilient Clustering Technology and PoE

Chapter 5

Configuration Using the Web-based Utility

Default Gateway The IP address (default 0.0.0.0) of the

gateway router between the Switch and management stations on other network segments. This setting can be configured from the Setup tab’s Network Settings screen.

NOTE: The Default Gateway cannot be

configured if the system IP address is set to

192.168.1.254. (The system IP Address is set using Setup > Network Settings.)

Address Mode Specifies whether the Switch’s IP address

is Static or dynamically assigned using DHCP (Dynamic Host Configuration Protocol). This setting can be configured from the Setup tab’s Network Settings screen. The default setting is Static.

Base MAC Address Displays the Switch’s MAC address.

Jumbo Frame This setting enables or disables Jumbo

frames on the Switch. A maximum packet size of 9 KB is supported. Jumbo frames allow data to be transmitted using fewer frames, providing lower overhead, quicker processing time, and fewer interruptions. Select either Enable or Disable (default).

Setup > Zoom

The Zoom screen depicts the status of all the ports in the system. This screen displays a front-panel view of each Switch. The color of each switch port indicates its status:

Green This port has a connection.

Gray This port has no connection.

Orange The administrator has closed down this port.

Setup > Zoom

NOTE: The Jumbo Frame feature functions only

on the Gigabit ports (G1-G4).

Switch Mode After Reset This setting specifies the

system mode following a system reset. Select either Standalone or Stackable (default).

System Information

Model Name Displays the model name of the Switch.

Hardware Version

Boot Version Displays the current boot version.

Firmware Version Displays the current software version

System Location Displays the location of the system if it

has been defined. This setting can be configured from the Setup tab’s Network Settings screen.

System Contact The name of the administrator appears

here, if one has been defined. This setting can be configured from the Setup tab’s Network Settings screen.

System Up Time Displays the length of time that has

elapsed since the Switch was last reset.

Current Time Displays the current time. This setting can

be configured from the Setup tab’s Time screen.

Displays the current hardware version.

Clicking on a port displays the Port Configuration screen.

NOTE: The port colors in the Zoom screen are

not related to the colors of the port LEDs. The port LEDs display different status information, as described in “Chapter 2: Overview.”

Setup > Network Settings

The Network Settings screen allows you to edit the following information.

Click Save Settings to save your changes. Click Cancel

Changes to cancel your changes.

24/48-Port 10/100 + 4-Port Gigabit Smart Switch with Resilient Clustering Technology and PoE

Identification

System Name Specifies the name of the Switch. Enter the

name into the text field provided. By default, the system name is LS-SLM224G4POE or LS-SLM248G4POE.

Chapter 5

System Location This is used to enter a description of

where the Switch is physically located, such as 3rd Floor.

System Contact Enter the name of the administrator

responsible for the system.

System Object ID This is used for SNMP purposes and is

set to 1.3.6.1.4.1.3955.6.5.224(248).2.

Configuration Using the Web-based Utility

Base MAC Address

Displays the Switch’s physical address

IP Configuration

Management VLAN This drop-down menu allows you to

select the Management VLAN. The default value is 1.

WARNING: If the system IP address (IP Address

field) is set to 192.168.1.254, then keep the default values for the Management VLAN field (default value: 1), and the Default Gateway field (default value: 0.0.0.0). These fields must remain set to the default values. Otherwise, you may not be able to access the system.

IP Address Mode Specifies whether the Switch’s IP

address is Static or dynamically assigned using DHCP (Dynamic Host Configuration Protocol). Selecting Static allows you to enter a static IP address, subnet mask and default gateway using the text field provided. The default setting is Static.

IP Address If you are using a static IP address, enter

the IP address here. The Switch’s default IP address is

192.168.1.254.

Subnet Mask If you are using a static IP address, enter

the subnet mask for the currently configured IP address. The default subnet mask is 255.255.255.0.

Default Gateway If you are using a static IP address,

enter the IP address of the default gateway. The default value is 0.0.0.0.

DNS Server If you are using a static IP address, enter the

IP address of the DNS server. A second DNS address can be specified in the additional text field provided.

Click Save Settings to save your changes. Click Cancel Changes to cancel your changes.

Setup > Time

Set Time

Use System Time Select this option to use the system

date and time.

Use SNTP Time Select this option to use a Simple Network

Time Protocol (SNTP) server to set the date and time.

Local Time

Here you set the system date and time for the Switch. All settings noted as “two-digit” must contain a leading zero if the value is less than 10 (for example, 01 instead of 1).

Hours Enter the two-digit hour here.

Minutes Enter the two-digit minutes here.

Seconds Enter the two-digit seconds here.

Month Enter the two-digit month here.

Day Enter the two-digit day here.

Year Enter the last two digits of the year here (for example,

07 instead of 2007).

Time Zone Select your time zone from the drop-down

menu. Time zones are identified by the difference between Greenwich Mean Time (GMT) and local time.

Daylight Saving

This is where you configure Daylight Saving Time.

Daylight Saving To enable daylight saving time, check

the box, then select either USA or European to use US or European daylight saving time, respectively. To use a different type of daylight saving time, select Custom, then customize the following settings:

The Time screen allows you to configure the time settings for the Switch.

24/48-Port 10/100 + 4-Port Gigabit Smart Switch with Resilient Clustering Technology and PoE

Time Set Offset Enter the time difference in minutes

•

for daylight saving time. The default is 60 minutes.

From Enter the starting date for daylight saving time

•

using the format DD/MM/YY.

To Enter the ending date for daylight saving time

•

using the format DD/MM/YY.

Chapter 5

Recurring If daylight saving time has fixed start and

•

end dates, check this box and fill in these fields:

From Specify the day, week, month, and time

•

when daylight saving time will be enabled.

To Specify the day, week, month, and time when

•

dalight saving time will be disabled.

SNTP Servers

Configuration Using the Web-based Utility

Stacking Ports After Reset This indicates which Gigabit

ports will be used for stacking when the system is reset. Select either Copper Ports (default) or Combo Ports.

Unit No. After Reset This is used to change the unit

numbers of the switches in the stack when the system is reset. To change a switch’s unit number, locate the unit in the Unit No. column, then select the new unit number in the Unit No. After Reset column.

This is where you configure a Simple Network Time Protocol (SNTP) server. SNTP servers are used to set the system time and date automatically at set intervals.

Server1 The IP address of the primary SNTP server.

Server2 The IP address of a secondary SNTP server to be

accessed if the primary SNTP server is unavailable.

SNTP Polling Interval Enter the polling interval in

seconds. The valid range of values is 60 to 86400. The default value is 1024 seconds (approx. 17 minutes).

Setup > Stack Management

The Stack Management screen allows you to configure the settings for the Switch stack.

Port Management

The Port Management tab contains the Port Settings, Link Aggregation, and LACP screens.

Port Management > Port Settings

The Port Settings screen displays the settings for the ports on each switch in the system. The information on the Port Settings screen is read-only. Click Detail to the right of a port’s information to edit that port’s settings using the

Port Configuration screen. For detailed information on the Port Configuration screen, refer to the “Port Configuration“

section.

Setup > Stack Management

Master Election If you want the system to assign the

master unit, keep the default setting, Automatically. If you want to specify the master unit yourself, select Force Master, then select unit 1 or 2 from the drop-down menu.

NOTE: If unit 1 is the master unit and unit 1

becomes unavailable, unit 2 will immediately become the master unit. If unit 1 becomes available again within 10 minutes, unit 1 will be restored as the master unit. If unit 1 becomes available after 10 minutes, unit 2 will remain the master unit. In this case, to restore unit 1 as the master unit, set Master Election to specify unit 1 as the master unit, then reboot the stack.

24/48-Port 10/100 + 4-Port Gigabit Smart Switch with Resilient Clustering Technology and PoE

The Port Settings screen displays the following information. For more information on these settings, refer to the “Port Configuration“ section.

Unit No. The unit (switch) that you are managing. The

default is the Master unit’s number. To manage a different unit, select its number from the drop-down menu.

Port The port number (preceded by the unit number).

For example, 2/e1 indicates Unit 2, Ethernet Port 1.

Description The user-defined port description.

Administrative Status Select Down to take the port

offline. When Up is selected, the port can be accessed normally.

Link Status The port’s operational status. The value is

either Up (the port has an active connection) or Down (the port has no active connection, or has been taken offline by an administrator).

Port Management > Port Settings

Chapter 5

Configuration Using the Web-based Utility

Speed The port’s configured rate in Mbps.

Duplex The port’s current duplex mode, Half or Full.

MDI/MDIX

if the port is connected to an end station. The MDIX setting is used if the port is connected to a hub or another switch.

Flow Control This is the flow control status of the port. It

is active when the port uses Full Duplex Mode.

Type Displays the port type.

LAG This indicates if the port belongs to a LAG.

The port’s MDI/MDIX type. The MDI setting is used

Port Configuration

The Port Configuration screen lets you configure a port’s settings. To use this screen, click Detail in the Detail column on the Port Settings screen.

Admin Status The port’s administrative status. Select

either Up or Down to enable or disable traffic forwarding through the port.

Current Port Status (Read-only) The port’s connection

status, either Up or Down.

Reactivate Suspended Port If the port has been

suspended, select this checkbox to reactivate the port.

Operational Status (Read-only) Displays whether the

port is operational or non-operational.

Admin Speed Use this to manually set the port’s

configured transmission rate in Mbps. You can select 10M, 100M, or 1000M (Gigabit ports only). Before you change

this setting, make sure that Auto Negotiation is disabled.

Current Port Speed (Read-only) The port’s current rate

in Mbps.

Admin Duplex The port’s duplex mode, either Full or

Half.

Current Duplex Mode (Read-only) The port’s current

duplex mode.

Auto Negotiation Select Enable (default) or Disable

to enable or disable Auto-Negotiation on the port. AutoNegotiation allows a port to advertise its transmission rate, duplex mode, and flow control settings to other ports. If you are using an SFP module on a port, Auto Negotiation for that port should be set to Disable.

Port Management > Port Settings> Port Configuration

The Port Configuration screen contains the following fields (“Read-only” indicates that a field cannot be edited).

Port The port number. To edit the information for

another port, select the port from the drop-down menu. (Port numbers consist of either “e” for Ethernet, or “g” for Gigabit, followed by the appropriate number.)

Description The user-defined port description of up to

64 characters. This field is blank by default.

Port Type (Read-only) The port’s connection type and

speed. The types are:

copper The port has a copper connection.

•

ComboC The Gigabit port has a copper connection.

•

ComboF The Gigabit port has a fiber optic

•

connection.

The port speed is prexed onto the type, for example

10M-copper indicates a 10 Mbps copper connection.

Current Auto Negotiation (Read-only) The port’s current

Auto-Negotiation status.

Admin Advertisement Select the speed(s) and duplex

mode(s) that the port will advertise. The available speeds are determined by the port type. The following capabilities are supported.

Max Capability The port advertises all speeds and

•

duplex mode settings.

10 Half The port advertises 10 Mbps half-duplex

•

operation.

10 Full The port advertises 10 Mbps full-duplex

•

operation.

100 Half The port advertises 100 Mbps half-duplex

•

operation.

100 Full The port advertises 100 Mbps full-duplex

•

operation.

1000 Full (Gigabit ports only) The port advertises

•

1000 Mbps full-duplex operation.

Current Advertisement (Read-only) The speed

and duplex mode settings that the port is currently advertising.

24/48-Port 10/100 + 4-Port Gigabit Smart Switch with Resilient Clustering Technology and PoE

Chapter 5

Configuration Using the Web-based Utility

Neighbor Advertisement (Read-only) The speed and

duplex mode settings that the neighbor port (the port to which the selected port is connected) is advertising. If the port has no neighbor port, this field displays “Unknown.”

Back Pressure Select Enable or Disable (default) to

enable or disable Back Pressure mode on the port.

Current Back Pressure (Read-only) The current Back

Pressure mode on the port.

Flow Control Select Enable or Disable to manually

enable or disable flow control, or select Auto-Negotiation for automatic selection of flow control on the port.

Current Flow Control (Read-only) The current flow

control setting.

MDI/MDIX Select the port’s MDI/MDIX type, either MDI,

or MDIX. The MDI setting is used if the port is connected to an end station. The MDIX setting is used if the port is connected to a hub or another switch.

Current MDI/MDIX (Read-only) The port’s current MDI/

MDIX type.

LAG (Read-only) The LAG to which this port belongs, if

the port is a LAG member.

Admin Status The administrative status of the interface.

To change the status, select Up to enable the interface, or select Down to disable it.

Type Indicates if a LAG has been manually configured

(static) or dynamically set through LACP.

Link Status Displays the status of the link.

Speed Displays the port speed.

Duplex Displays the duplex mode.

Flow Control Displays the flow control.

LAG Mode Displays the LAG mode.

Detail To create a new LAG, click Detail in the Detail

column to display the Link Aggregation detail screen.

LAG Configuration

The Link Aggregation detail screen lets you configure a LAG. You can create a LAG, select its ports, enable/disable the LAG, and set the capability advertisements, speed, duplex mode, and flow control. To use this screen, click Detail on the Port Settings screen.

Click Save to save the settings and leave the screen open. Click Save & Close to save the settings and close the screen. Click Close to close the screen without saving the settings.

Port Management > Link Aggregation

You can create multiple links between devices that work as one virtual, aggregate link. This is known as a Link Aggregrated Group (LAG). LAGs offers a dramatic increase in bandwidth for network segments where bottlenecks exist, as well as providing a fault-tolerant link between two devices. You can create up to eight LAGs on the Switch. Each LAG can contain up to eight ports.

LAG The LAG number (1-8).

Description The user-defined description for the LAG.

Port Management > Link Aggregation > Detail

LAG The LAG number (1-8). To display or edit another

LAG, select the number from the drop-down menu.

Description The user-defined LAG description of up to

64 characters. This field is blank by default.

LACP Select the checkbox to enable Link Aggregation

Control Protocol (LACP).

LAG Type (Read-only) The LAG type. The values are:

eth100m The LAG contains 100 Mbps Ethernet ports.

•

eth1000m The LAG contains 1000 Mbps Ethernet

•

ports.

24/48-Port 10/100 + 4-Port Gigabit Smart Switch with Resilient Clustering Technology and PoE

Chapter 5

Configuration Using the Web-based Utility

Administrative Status The LAG’s administrative status.

Select either Up or Down to enable or disable the LAG.

Current Status (Read-only) The LAG’s status, either Up or

Down.

Admin Auto Negotiation Select Enable (default) or

Disable to enable or disable Auto-Negotiation on the

LAG. Auto-Negotiation allows a LAG to advertise its transmission rate, duplex mode, and flow control settings to other LAGs.

Current Auto Negotiation (Read-only) The LAG’s current

Auto-Negotiation status.

Admin Speed Use this to manually set the LAG’s

configured transmission rate in Mbps. You can select 10M, 100M, or 1000M (Gigabit ports only). Before you change

this setting, make sure that Admin Auto Negotiation is disabled.

Current LAG Speed (Read-only) The LAG’s current rate in

Mbps.

Admin Flow Control Select Enable or Disable to

manually enable or disable flow control, or select AutoNegotiation for automatic selection of flow control.

Current Flow Control (Read-only) The current flow

control setting.

Select Ports To add a port to the LAG, select its checkbox

in this section. You can select up to 8 ports per LAG.

Click Save to save the settings and leave the screen open. Click Save & Close to save the settings and close the screen. Click Close to close the screen without saving the settings.

Port Management > LACP

In addition to LAGs that you create by manually grouping ports together, you can also use the Link Aggregation Control Protocol (LACP) to automatically negotiate a LAG link between the Switch and another network device.

Global Parameter

LACP System Priority The global LACP priority value,

from 1 to 65535. The default value is 1.

Port Priority

Unit No The number of the unit that you are managing.

Port The port to which the timeout and priority values

will be assigned. To configure a different port, select it from the drop-down menu. If the port is not listed, click

Next in the LACP Port Table.

LACP Port Priority Defines the LACP priority value for

the port, from 1 to 65535. The default value is 1.

LACP Timeout The administrative LACP timeout value.

Select either Short or Long (default).

Admin Key (Read-only) A channel will only be formed

between ports with the same admin key. This only applies to ports located on the same switch.

When you are finished entering the settings above, click Update to apply the settings.

LACP Port Table

This section provides a read-only display of the current LACP settings. For each port on the currently selected unit, this table displays the Port Priority, LACP Timeout, and Admin Key,

After you are finished setting the LACP parameters, click Save Settings to save the settings, or click Cancel Changes to cancel your changes.

Port Management > PoE Power Settings

The PoE Power Settings screen allows you to configure the PoE switch’s settings.

The LACP screen contains fields for configuring LACP LAGs.

PoE Interface

Port Management > LACP

24/48-Port 10/100 + 4-Port Gigabit Smart Switch with Resilient Clustering Technology and PoE

Unit No Select the number of the unit that you are

managing.

Port Management > PoE Power Settings

Chapter 5

Configuration Using the Web-based Utility

Port The port whose PoE settings are being configured.

To configure a different port, select it from the drop-down menu.

Admin Status/Enable This indicates if PoE is enabled or

disabled on the port. To enable PoE on the port, keep the default, Enable (option selected). To disable PoE on the port, unselect the Enable option.

Priority This indicates the PoE port’s priority. The values

are Critical, High, and Low (default).

Power Allocation (Read-only) This indicates the actual

amount of power in milliwatts that the switch can supply on the port.

Power Consumption (Read-only) This indicates the

amount of power that is currently being consumed on the port.

Click Save Settings to save your changes. Click Cancel Changes to cancel your changes.

VLAN Management

A VLAN is a group of ports that can be located anywhere in the network, but communicate as though they belong to the same physical segment.

VLAN ID ID of the VLAN being configured (2-4093, no

leading zeroes).

VLAN Name Name of the VLAN (1 to 32 characters).

VLAN Range

To create a range of VLANs, enter the range of their IDs in the VLAN Range fields and then click Add Range.

VLAN Table

This lists the ID, name, and status of each configured VLAN, and the total number of VLANs. The VLAN status is either Static (user-defined VLAN) or Default (default VLAN).

To remove a VLAN or a range of VLANs, select the VLANs in the VLAN Table, then click Delete.

VLAN Management > Port Setting

The Port Setting screen allows you to manage the ports in a VLAN. The port default VLAN ID (PVID) is configured from the Port Setting screen. All untagged packets arriving at a VLAN port are tagged with the port’s PVID.

VLANs help to simplify network management by allowing you to move devices to a new VLAN without having to change any physical connections. VLANs can be easily organized to reflect departmental groups (such as Marketing or R&D), usage groups (such as e-mail), or multicast groups (used for multimedia applications such as videoconferencing). You can create up to 128 VLANs on the Switch.

VLAN Management > Create VLAN

The Create VLAN screen lets you create and configure global parameters for VLANs.

VLAN Management > Create VLAN

Single VLAN

To create a single VLAN, enter the VLAN ID and VLAN Name, up to 32 characters long, and click Add.

VLAN Management > Port Setting

You can configure VLAN behavior for specific ports, including the accepted frame type, VLAN identifier (PVID), and ingress filtering.

Unit No. The number of the unit that you are managing.

Port The number of the port.

Acceptable Frame Type This specifies the type of frames

that the port will accept. If All (default) is selected, the port will accept all frame types, including tagged or untagged frames. If Tagged is selected, the port accepts only tagged frames. When set to All, each untagged frame received is assigned to the specific VLAN that matches the PVID.

PVID Use this field to select the VLAN ID that will be

assigned to untagged frames received on the port. Valid IDs are 1 (default) to 4093. VLAN 4094 is reserved for internal use. VLAN 4095 is defined per standard and industry practice as the Discard VLAN. Frames tagged for the Discard VLAN are dropped.

24/48-Port 10/100 + 4-Port Gigabit Smart Switch with Resilient Clustering Technology and PoE

Chapter 5

Configuration Using the Web-based Utility

Ingress Filtering Enables or disables Ingress filtering

on the port. Ingress filtering discards packets that do not match port ingress rules. The default is Enabled.

LAG Displays the LAG, if any, to which the port belongs. A

port’s LAG settings override the VLAN port settings.

Click Save Changes to save your changes, or click Cancel Changes to cancel.

VLAN Management > Port to VLAN

You use the Port to VLAN screen to add ports to a VLAN and delete ports from a VLAN. When you add a port to a VLAN, you also specify whether the port is tagged or untagged.

The Port to VLAN screen contains a Port Table with VLAN parameters for each port. To add a port to or delete a port from the VLAN, you select the port’s appropriate configuration options from this table.

Unit No. The unit number that contains the ports whose

VLAN information you wish to configure.

Port The number of the port being configured.

Join VLAN To configure the port’s VLAN membership,

press Join VLAN to bring up the Join VLAN to Port screen.

VLANs

belongs. Each VLAN ID ends with “T” if the port is tagged or with “U” if the port is untagged in that VLAN.

LAG Displays the LAG to which the port belongs, if any.

If a port belongs to a LAG, it cannot belong to a VLAN. However, the LAG to which the port belongs can be configured to belong to a VLAN.

Displays the IDs of the VLANs to which the port

VLAN Management > Port to VLAN

Select VLAN Select the ID of the VLAN whose port

membership you are configuring.

Unit No. Select the unit that contains the ports for the

VLAN you are configuring.

For each port in the VLAN, select the appropriate configuration option:

Tagged The interface is a member of the VLAN. All

•

packets transmitted by the port will be tagged and will carry VLAN information.

Untagged The interface is a member of the VLAN. All

•

packets transmitted by the port will be untagged and will not carry VLAN information.

Excluded The interface is excluded from the VLAN.

•

This is the default option.

VLAN Management > VLAN to Port

The VLAN to Port screen displays each port’s VLAN membership information. It is also used to add a port to or delete a port from a VLAN.

VLAN Management > VLAN to Port

Join VLAN to Port

The Join VLAN to Port screen appears when you click Join VLAN in the VLAN to Port screen. You use this screen to

configure the port’s VLAN membership.

VLAN Management > VLAN to Port > Join VLAN to Port

Select VLAN This contains two fields. The field on the left

lists the IDs of all available VLANs to which the port can belong; the field on the right lists the IDs of the VLANs to which the port already belongs.

Add To add the port to an available VLAN, select the VLAN

from the list on the left, then select the desired Tagging option and click Add. The VLAN ID now ending with “T” or “U” will appear in the list on the right.

24/48-Port 10/100 + 4-Port Gigabit Smart Switch with Resilient Clustering Technology and PoE

Chapter 5

Configuration Using the Web-based Utility

Remove To remove the port from a VLAN, select the VLAN

from the list on the right and click Remove. The VLAN ID will appear in the list on the left without the “T” or “U”.

Tagging When you are adding a port to a VLAN, specify

whether the port is Tagged (default) or Untagged.

Click Save to save your changes and leave the screen open, Save & Close to save your changes and close the screen, or click Close to close the screen without saving your changes.

Statistics

The Statistics tab contains the Interface Statistics screen, which lets you display statistics for a specified interface.

Statistics > RMON Statistics

Broadcast Packets Received Displays the number of

good broadcast packets received on the interface since the device was last refreshed. This number does not include Multicast packets.

Multicast Packets Received Displays the number of

good Multicast packets received on the interface since the device was last refreshed.

CRC & Align Errors Displays the number of CRC and

Align errors that have occurred on the interface since the device was last refreshed.

Undersize Packets Displays the number of undersized

packets (less than 64 octets) received on the interface since the device was last refreshed.

Oversize Packets Displays the number of oversized

packets (over 1518 octets) received on the interface since the device was last refreshed.

Fragments Displays the number of fragments (packets

with less than 64 octets, excluding framing bits, but including FCS octets) received on the interface since the device was last refreshed.

Jabbers Displays the total number of received packets

that were longer than 1518 octets. This number excludes frame bits, but includes FCS octets that had either a bad Frame Check Sequence (FCS) with an integral number of octets (FCS Error) or a bad FCS with a non-integral octet (Alignment Error) number. The field range to detect jabbers is between 20 ms and 150 ms.

This screen allows you to display RMON statistics for the Ethernet port or LAG that you specify. You can also specify the rate at which the display will be refreshed.

Interface To display statistics for an Ethernet port, select

Unit No., then select the desired unit number and port

from the drop-down menus. To display statistics for a LAG, select LAG and then select the desired LAG from the dropdown menu.

Refresh Rate Select the rate at which to refresh the

statistics display. The values are 15 sec, 30 sec, 60 sec, and No Refresh (default).

Drop Events Displays the number of dropped events

that have occurred on the interface since the device was last refreshed.

Received Bytes (Octets) Displays the number of octets

received on the interface since the device was last refreshed. This number includes bad packets and FCS octets, but excludes framing bits.

Received Packets Displays the number of packets

received on the interface, including bad packets, Multicast and broadcast packets, since the device was last refreshed.

Collisions Displays the number of collisions received on

the interface since the device was last refreshed.

Frames of xx Bytes Number of xx-byte frames received

on the interface since the device was last refreshed.

Clear Counters Click Clear Counters to reset all the

counters on this screen to zero.

Refresh Now Click Refresh Now to refresh the display

immediately with the latest information.

Statistics > RMON History

The RMON History screen contains information about samples of data taken from ports. For example, the samples may include interface definitions or polling periods.

24/48-Port 10/100 + 4-Port Gigabit Smart Switch with Resilient Clustering Technology and PoE

Chapter 5

Statistics > RMON History

RMON History

Source Interface Indicates the interface from which the

history samples were taken. To specify the interface, select Unit No. (default) and specify the unit number and port from the drop-down menus, or select LAG and select the LAG number from the drop-down menu.

Sampling Interval Indicates (in seconds) how often

samples are taken from the ports. The range is 1 to 3600. The default is 1800 seconds (30 minutes).

Current Number of Samples to Keep Indicates the

number of samples to save.

Owner Displays the RMON station or user that requested

the RMON information. Maximum length is 20 characters.

Click Add to List to add the configured RMON sampling to the Log Table at the bottom of the screen.

Log Table

Source Interface Displays the interface from which the

history samples were taken.

Sampling Interval Indicates the time in seconds that

samplings are taken from the port.

Sampling Requested Displays the number of samples to

be saved. The range is 1-65535. The default value is 50.

Current Number of Samples Displays the current

number of samples taken.

Owner Displays the RMON station or user that requested

the information.

Click View History Table to open the RMON History Table screen.

To delete an entry from the Log Table, select the entry, then click Delete.

Configuration Using the Web-based Utility

RMON History Table

Statistics > RMON History > RMON HIstory Table

The RMON History Table screen contains interface specific statistical network samplings. Each table entry represents all counter values compiled during a single sample.

History Entry No. Displays the history table entry

number.

Owner Displays the RMON station or user that requested

the RMON information. The maximum length is 20 characters.

Sample No. Indicates the sample number from which

the statistics were taken.

Drop Events TBD

Received Bytes (Octets) Displays the number of octets

received on the interface since the device was last refreshed. This number includes bad packets and FCS octets, but excludes framing bits.

Received Packets Displays the number of packets

received on the interface since the device was last refreshed, including bad packets, Multicast and Broadcast packets.

Broadcast Packets Displays the number of good

Broadcast packets received on the interface since the device was last refreshed. This number does not include Multicast packets.

Multicast Packets Displays the number of good Multicast

packets received on the interface since the device was last refreshed.

CRC Align Errors Displays the number of CRC and Align

errors that have occurred on the interface since the device was last refreshed.

Undersize Packets Displays the number of undersized

packets (less than 64 octets) received on the interface since the device was last refreshed.

24/48-Port 10/100 + 4-Port Gigabit Smart Switch with Resilient Clustering Technology and PoE

Chapter 5

Configuration Using the Web-based Utility

Oversize Packets Displays the number of oversized

packets (over 1518 octets) received on the interface since the device was last refreshed.

Fragments Displays the number of fragments (packets

with less than 64 octets, excluding framing bits, but including FCS octets) received on the interface since the device was last refreshed.

Jabbers Displays the total number of received packets

Collisions Displays the number of collisions received on

the interface since the device was last refreshed.

Utilization Displays the percentage of the interface utilized.

Statistics > RMON Alarms

The RMON Alarm screen is used to set network alarms. Network alarms occur when a network problem, or event, is detected. Rising and falling thresholds generate events.

Delta Subtracts the last sampled value from the

•

current value. The difference in the values is compared to the threshold.

Rising Threshold Displays the rising counter value that

triggers the rising threshold alarm. The rising threshold is presented on top of the graph bars. Each monitored variable is designated a color.

Rising Event Displays the mechanism in which the alarms

are reported. The possible field values are:

LOG Indicates there is not a saving mechanism for

•

either the device or in the management system. If the device is not reset, the entry remains in the Log Table.

TRAP Indicates that an SNMP trap is generated, and

•

sent via the Trap mechanism. The Trap can also be saved using the Trap mechanism.

Both Indicates that both the Log and Trap mechanism

•

are used to report alarms.

Falling Threshold Displays the falling counter value that

triggers the falling threshold alarm. The falling threshold is graphically presented on top of the graph bars. Each monitored variable is designated a color.

Falling Event Displays the mechanism in which the

alarms are reported. The possible field values are:

Statistics > RMON Alarm

Add Alarm

Alarm Entry Indicates a specific alarm.

Interface Indicates the interface for which RMON

statistics are displayed. To specify the interface, select Unit No. (default) and specify the unit number and port from the drop-down menus, or select LAG and select the LAG number from the drop-down menu.

Counter Name Displays the selected MIB variable.

Sample Type Defines the sampling method for the

selected variable and comparing the value against the thresholds. The possible field values are:

LOG Indicates there is not a saving mechanism for

•

either the device or in the management system. If the device is not reset, the entry remains in the Log Table.

TRAP Indicates that a SNMP trap is generated, and

•

sent via the Trap mechanism. The Trap can also be saved using the Trap mechanism.

Both Indicates that both the Log and Trap mechanism

•

are used to report alarms.

Startup Alarm Displays the trigger that activates alarm

generation. Rising is defined by crossing the threshold from a low-value threshold to a higher-value threshold.

Interval Defines the alarm interval time in seconds.

Owner Displays the device or user that defined the alarm.

Click Add to List to add an entry to the Alarm Table.

Alarm Table

The Alarm Table lists the alarms that have been defined using the Add Alarm section. The Alarm Table contains a colunn for each field in the Add Alarm section, plus the following column:

Counter Value Displays the current counter value for the

particular alarm.

Absolute Compares the values directly with the

•

thresholds at the end of the sampling interval.

24/48-Port 10/100 + 4-Port Gigabit Smart Switch with Resilient Clustering Technology and PoE

Chapter 5

Statistics > RMON Events

The RMON Events screen is used to define RMON events.

Configuration Using the Web-based Utility

Statistics > Port Utilization

Statistics > RMON Events

Add Event

Event Entry Displays the event.

Community Displays the community to which the event

belongs.

Description Displays the user-defined event description.

Type Describes the event type. Possible values are:

None Indicates that no event occurred.

•

Log Indicates that the event is a log entry.•Trap.

•

Indicates that the event is a trap.

Log and Trap Indicates that the event is both a log

•

entry and a trap.

Owner Displays the device or user that defined the

event.

Click Add to List to add the configured RMON event to the Event Table at the bottom of the screen.

Event Table

The Event Table lists all events defined using the Add Event fields. The Event Table contains columns for all the Add Event fields, plus the following additional column:

Time Displays the time that the event occurred.

Statistics > Port Utilization

Unit No The number of the unit that you are managing.

Refresh Rate Select the rate at which to refresh the

statistics display: No Refresh (default), 15 sec, 30 sec, or 60 sec.

Statistics > Interface Statistics

The Interface Statistics screen is used to display statistics for the Ethernet port or LAG that you specify. You can also specify the rate at which the display will be refreshed.

Interface

Unit No., then select the desired unit and port from the

drop-down menus. To display statistics for a LAG, select LAG, then select the desired LAG from the drop-down menu.

Refresh Rate Select the rate at which to refresh the

display: 15 sec, 30 sec, 60 sec, or No Refresh (default).

To display statistics for an Ethernet port, select

The Port Utilization screen displays the amount of resources each interface is currently consuming. Ports in green are functioning normally, while ports in red are currently transmitting an excessive amount of network traffic.

24/48-Port 10/100 + 4-Port Gigabit Smart Switch with Resilient Clustering Technology and PoE

Interface

This section displays statistics for the packets transmitted and received on the selected interface.

Receive Statistics Statistics on received packets

Total Bytes (Octets) Displays the number of octets

•

received on the selected interface.

Chapter 5

Unicast Packets Displays the number of Unicast

•

packets received on the selected interface.

Multicast Packets Displays the number of Multicast

•

packets received on the selected interface.

Broadcast Packets Displays the number of Broadcast

•

packets received on the selected interface.

Packets with Errors Displays the number of error

•

packets received from the selected interface.

Transmit Statistics Statistics on transmitted packets

Total Bytes (Octets) Displays the number of octets

•

transmitted from the selected interface.

Unicast Packets Displays the number of Unicast

•

packets transmitted from the selected interface.

Multicast Packets Displays the number of Multicast

•

packets transmitted from the selected interface.

Broadcast Packets Displays the number of Broadcast

•

packets transmitted from the selected interface.

Ethernet-like

This section displays the following statistics for the selected interface.

Frame Check Sequence (FCS) Errors Displays the

number of FCS errors received on the selected interface.

Single Collision Frames Displays the number of single

collision frames received on the selected interface.

Late Collisions Displays the number of late collision

frames received on the selected interface.

Oversize Packets Displays the number of oversize packet

errors on the selected interface.

Internal MAC Receive Errors Displays the number of

internal MAC received errors on the selected interface.

Received Pause Frames Displays the number of received

paused frames on the selected interface.

Transmitted Pause Frames Displays the number of

paused frames transmitted from the selected interface.

Clear Counters Click the Clear Counters button to reset

all the counters on this screen to zero.

Security

Configuration Using the Web-based Utility

Security > 802.1x Settings

Port-based authentication enables authenticating system users on a per-port basis via an external server. Only authenticated and approved system users can transmit and receive data. Ports are authenticated via a RADIUS server using the Extensible Authentication Protocol (EAP)

Parameters

Enable 802.1x Select the checkbox to enable 802.1x

authentication. The default is not enabled.

Interface The interface on which to configure 802.1x.

Unit No. Select the unit number from the drop-down

•

menu.

Port Select the port from the drop-down menu.

•

Status Port Control Sets the port authentication mode

to one of the following options:

ForceAuthorized (Default) Forces the port to grant

•

access to all clients, either dot1x-aware or otherwise.

ForceUnauthorized Forces the port to deny access

•

to all clients, either dot1x-aware or otherwise.

Auto Causes the port authentication mode to be

•

selected automatically.

Enable Periodic Reauthentication Select the checkbox

to permit periodic port reauthentication.

Setting Timer Click this button to open the Setting Timer

screen to configure ports for 802.1x functionality.

Update If you click this button, your changes are saved

and appear immediately in the screen’s Table section.

Security > 802.1x Settings

Table

The 802.1x Settings screen is used to configure a port’s

802.1x authentication settings.

24/48-Port 10/100 + 4-Port Gigabit Smart Switch with Resilient Clustering Technology and PoE

This part of the 802.1x Settings screen displays a summary of the settings that appear in the Parameters section of the screen. If you click More Details, the settings described in the “Setting Timer” section are added to the table.

Click Save Settings to apply the changes, or Cancel

Changes to cancel the changes.

Chapter 5

Setting Timer

The Setting Timer screen appears when you click Setting Timer on the 802.1x Settings screen. You use the Setting

Timer screen to configure a port’s 802.1x functionality.

Configuration Using the Web-based Utility

Security > Port Security

Security > 802.1x Settings > Setting Timer

Port Displays the port name.

Reauthentication Period Specifies the number

of seconds after which a connected client must be reauthenticated. The range is 300 to 4294967295 seconds. The default value is 3600 seconds.

Quiet Period Specifies the time that a switch port waits

after Max EAP Requests is exceeded before attempting to acquire a new client. The range is 1 to 65535 seconds. The default is 60 seconds.

Resending EAP Specifies the time that the switch waits

for a response to an EAP request/identity frame from the client before retransmitting an EAP packet. The range is 1 to 65535 seconds. The default is 30 seconds.

Max EAP Requests Specifies the maximum number

of times the switch port will retransmit an EAP request packet to the client before it times out the authentication session. The range is 1 to 10 times. The default is 2 retries.

Supplicant Timeout Displays the number of seconds that

lapses before EAP requests are resent to the supplicant. The range is 1 to 65535 seconds. The default is 30 seconds.

Server Timeout The number of seconds that lapses

before the switch resends a request to the authentication server The range is 1 to 65535. The default is 30 seconds.

Click Save to save your changes and leave the screen open. Click Save & Close to save your changes and close the screen. Click Close to close the screen without saving your changes.

Security > Port Security

The Port Security screen is used to configure a port’s security settings.

Network security can be increased by limiting access on a specific port only to users with specific MAC addresses. MAC addresses can be dynamically learned or statically configured.

Locked port security monitors both received and learned packets that are received on specific ports. Access to the locked port is limited to users with specific MAC addresses. These addresses are either manually defined on the port, or learned on that port up to the point when it is locked. When a packet is received on a locked port, and the packet’s source MAC address is not tied to that port (either it was learned on a different port, or it is unknown to the system), the protection mechanism is invoked, and can provide various options. Unauthorized packets arriving at a locked port are either:

Forwarded

•

Discarded

•

Cause the port to be shut down

•

Locked port security also enables storing a list of MAC addresses in the configuration file. The MAC address list can be restored after the device has been reset.

Disabled ports can be reactivated from the Port Settings screen of the Port Management tab.

Interface Select Unit No. or LAG, then select the desired

interface from the appropriate drop-down menu.

Lock Interface Select this option to lock the interface.

The default is not selected (interface not locked).

Learning Mode Defines the locked port type. This field

is enabled only if Lock Interface is not selected. The possible values are:

Classic Lock Locks the port using the classic lock

•

mechanism. The port is immediately locked, regardless of how many addresses have already been learned.

Limited Dynamic Lock Locks the port by deleting

•

the current dynamic MAC addresses associated with the port. The port learns up to the maximum number of addresses allowed on the port. Both relearning and aging MAC addresses are enabled.

In order to change the Learning Mode, the Lock Interface must be unselected. Once the Learning Mode is changed, the Lock Interface can be reinstated.

24/48-Port 10/100 + 4-Port Gigabit Smart Switch with Resilient Clustering Technology and PoE

Chapter 5

Configuration Using the Web-based Utility

Max Entries Specifies the number of MAC addresses

that can be learned on the port. This field is enabled only if Learning Mode is set to Limited Dynamic Lock. The default value is 1.

Action on Violation Indicates the action to be applied to

packets arriving on a locked port. The possible values are:

Discard Discards packets from any unlearned source.

•

This is the default value.

Forward Forwards packets from an unknown source

•

without learning the MAC address.

Discard Disable Discards packets from any unlearned

•

source and shuts down the port. The port remains shut down until reactivated, or until the device is reset.

Enable Trap Enables traps when a packet is received on

a locked port.

Trap Frequency The amount of time (in seconds)

between traps. The default value is 10 seconds.

Update If you click this button, your changes are saved

and appear immediately in the table at the bottom of the Port Security screen.

The lower portion of the Port Security screen displays a summary of the settings in the upper portion of the screen. The settings are displayed for each of the ports on the Switch.

IP Address Enter the web IP address or SNMP IP address

to be allowed.

Wildcard Mask Enter the wildcard mask for the web IP

address or SNMP IP address. Wildcard masks specify which bits are used and which bits are ignored. A wild card mask of 255.255.255.255 indicates that no bit is important. A wildcard of 0.0.0.0 indicates that all the bits are important. For example, if the source IP address is 149.36.184.198 and the wildcard mask is 255.36.184.00, the first eight bits of the IP address are ignored, while the last eight bits are used.

Add to List Click this button to save the IP address and

Wildcard Mask. The information will appear in the list at the bottom of the screen.

The bottom portions of both the Web IP Filtering and SNMP IP Filtering sections displays the current IP access list, where each entry consists of an IP Address and Wildcard Mask. To delete an entry from the list, select it and click Delete.

Click Save Settings to apply the changes, or Cancel Changes to cancel the changes.

Security > Storm Control

The Storm Control screen is used to configure broadcast and multicast storm control.

Click Save Settings to apply the changes, or Cancel Changes to cancel the changes.

Security > Management Access List

Use the Management Access List screen to specify IP addresses that are to be allowed to manage the device, using an IP address and wildcard mask.

Storm Control enables limiting the amount of Multicast and Broadcast frames accepted and forwarded by the Switch. A Broadcast Storm results when an excessive amount of broadcast messages is simultaneously transmitted across a network by a single port. Forwarded message responses are heaped onto the network, straining network resources or causing the network to time out.

To enable Storm Control on a port, you specify the packet

Security > Management Access List

The Management Access List screen contains two sections, Web IP Filtering and SNMP IP Filtering. These sections are identical except for the types of IP addresses that they relate to.

24/48-Port 10/100 + 4-Port Gigabit Smart Switch with Resilient Clustering Technology and PoE

type (broadcast/multicast) and maximum transmission rate. The system measures the incoming Broadcast and Multicast frame rates separately on each port and discards frames when the rate exceeds the specified maximum.

Interface Select the unit number and port from which

storm control is enabled.

Security > Storm Control

Chapter 5

Configuration Using the Web-based Utility

Broadcast Control Select the checkbox to apply

Broadcast control on the selected interface. Broadcast control limits the amount of Broadcast packet types to be forwarded. The default is not selected (disabled).

Mode Specifies the Broadcast mode currently enabled

on the device. The possible values are:

Multicast & Broadcast Counts Broadcast and

•

Multicast traffic together.

Broadcast Only Counts only Broadcast traffic.

•

Rate Threshold The maximum rate (packets per second)

at which unknown packets are forwarded. The ranges are 70 kbps to 100 Mbps for FE ports, and 3.5 to 100 Mbps for GE ports. The default value is 3500 kbps.

The Update button adds the Storm Control settings to the Storm Control table at the bottom of the screen.

Security > RADIUS

The RADIUS screen is used to configure a Remote Authorization Dial-In User Service (RADIUS) server for user authentication.

Number of Retries Defines the number of transmitted

requests sent to RADIUS server before a failure occurs. The possible values are 1 to 10. The default is 3.

Timeout for Reply Defines the amount of the time in

seconds the device waits for an answer from the RADIUS server before retrying the query, or switching to the next server. The possible values are 1 to 30. The default is 3.

Dead Time Defines the amount of time (minutes) that a

RADIUS server is bypassed for service requests. The range is 0 to 2000. The default is 0 minutes.

Key String Defines the default key string used to

authenticate and encrypt all RADIUS communications between the device and the RADIUS server. This key must match the RADIUS encryption.

Source IP Address Defines the source IP address that is

used for communication with RADIUS servers.

Usage Type This is the RADIUS server authentication

type. The possible values are:

•

is used for authenticating user name and passwords.

802.1X Indicates that the RADIUS server is used for

•

802.1X authentication.

Security > RADIUS

RADIUS servers provide additional security for networks by providing a centralized authentication method for web access. Up to eight RADIUS servers can be configured. The Switch attempts authentication using the listed sequence of servers. The process ends when a server either approves or denies access to a user.

IP Address Enter the IP address of the authentication

server.

Priority The server priority. The possible values are 0

to 65535, where 0 is the highest priority. This priority determines the order in which RADIUS servers are queried when more than one RADIUS server is configured. The default priority is 0.

Authentication Port Enter the authentication port. The

authentication port is used to verify the RADIUS server authentication. The default value is 1812.

All Indicates that the RADIUS server is used for

•

authenticating user name and passwords, and 802.1X port authentication.

Click Add to List to add the RADIUS configuration to the RADIUS table at the bottom of the screen.

Click Save Settings to save the changes, or Cancel Changes to cancel the changes.

QoS

Network traffic is usually unpredictable, and the only basic assurance that can be offered is best effort traffic delivery. To overcome this challenge, Quality of Service (QoS) is applied throughout the network. This ensures that network traffic is prioritized according to specified criteria, and that specific traffic receives preferential treatment. QoS in the network optimizes network performance and entails two basic facilities:

Classifying incoming traffic into handling classes, based on an attribute, including:

The ingress interface

•

Packet content

•

A combination of these attributes

•

Providing various mechanisms for determining the allocation of network resources to different handling classes, including:

24/48-Port 10/100 + 4-Port Gigabit Smart Switch with Resilient Clustering Technology and PoE

Chapter 5

The assignment of network traffic to a particular

•

hardware queue

The assignment of internal resources

•

Traffic shaping

•

The terms Class of Service (CoS) and QoS are used in the following context:

CoS provides varying Layer 2 traffic services. CoS

•

refers to classifying traffic into traffic classes, where each class is handled as an aggregate whole, with no per-flow settings. CoS is usually related to the 802.1p service that classifies flows according to their Layer 2 priority, as set in the VLAN header.

QoS refers to Layer 2 traffic and above. QoS handles

•

per-flow settings, even within a single traffic class.

The QoS configuration options are CoS Settings, Queue Settings, DSCP Settings, and Basic Mode.

Configuration Using the Web-based Utility

CoS Default

Unit No.

Default CoS Determines the default CoS value for

incoming packets for which a VLAN tag is not defined. The possible field values are 0-7. The default CoS is 0.

LAG The LAG to which the port belongs, if relevant. If the

port is a member of a LAG, the LAG settings override the port settings.

Click Save Settings to save the changes, or Cancel Changes to cancel the changes.

QoS > Queue Settings

The Queue Settings screen is used to define the QoS queue forwarding types.

The unit to which the CoS configuration applies

QoS > CoS Settings

The CoS Settings screen is used to enable or disable CoS.

QoS > CoS Settings

CoS Settings

QoS Mode Indicates if QoS is enabled. The possible

values are:

Disable Disables QoS.

•

Basic Enables QoS. This is the default value.

•

Class of Service Specifies the CoS priority tag values,

where 0 is the lowest and 7 is the highest.

QoS > Queue Settings

Strict Priority Indicates that traffic scheduling for the

selected queue is based strictly on the queue priority.

WRR Indicates that traffic scheduling for the selected

queue is based strictly on the WRR.

Queue Displays the queue (1-4) for which the queue

settings are displayed.

WRR Weight Displays the WRR weights to queues.

% of WRR Bandwidth Displays the percentage of

bandwidth assigned to the queue. These values are fixed and cannot be modified.

Click Save Settings to save the changes, or Cancel

Changes to cancel the changes.

Queue Defines the traffic forwarding queue to which the

CoS priority is mapped. Four traffic priority queues are supported.

Click Restore Defaults to restore the device factory defaults for mapping CoS values to a forwarding queue.

24/48-Port 10/100 + 4-Port Gigabit Smart Switch with Resilient Clustering Technology and PoE

Chapter 5

Configuration Using the Web-based Utility

QoS > DSCP Settings

The DSCP Settings screen allows you to map Differentiated Services Code Point (DSCP) values to specific queues.

DSCP Indicates the DSCP value in the incoming packet.

Select a DSCP value from the drop-down menu to map that value to the associated queue. You can select the DSCP value for the High, Medium, and Normal priority queues. The DSCP values for the Low priority queue are selected automatically based on the other DSCP values.

Interface The interface for which the queue shaping

information is displayed. Either select Unit No and select the unit number and port from the drop-down menus, or select LAG and select the LAG number from the dropdown menu.

Enable Ingress Rate Limit Status Indicates if rate limiting

is defined on the interface.

Enable Egress Shaping Rate Indicates if rate limiting is

enabled on the interface.

Committed Information Rate (CIR) Defines CIR as

the queue shaping type. The allowed values are 64 to 62500 Kbps for the 10/100 ports and 64 to 1000000 Kbps

for the Gigabit ports.

Committed Burst Size (CBS) Defines CBS as the

queue shaping type. The possible field value is 4096 to 15,769,020 bits. Commited Burst Size cannot be configured on FE ports.

Click Update to add the Bandwidth configuration to the Bandwidth Table at the bottom of the screen.

QoS > Basic Mode

Queue The queue (1-4) to which the DSCP value is being

mapped.

Click Save Settings to save the changes, or Cancel Changes to cancel the changes.

QoS > Bandwidth

The Bandwidth screen allows network managers to define the bandwidth settings for a specified egress or ingress interface. Modifying queue scheduling affects the queue settings globally. The Bandwidth screen is not used with the Service mode, as bandwidth settings are based on services.

QoS > Basic Mode

The Basic Mode screen contains the following fields:

Trust Mode Displays the trust mode. If a packet’s CoS

tag and DSCP tag are mapped to different queues, the Trust Mode determines the queue to which the packet is assigned. Possible values are:

CoS Sets trust mode to CoS on the device. The CoS

•

mapping determines the packet queue

DSCP Sets trust mode to DSCP on the device. The

•

DSCP mapping determines the packet queue.

Click Save Settings to save the changes, or Cancel Changes to cancel the changes.

Queue shaping can be based per queue and/or per interface. Shaping is determined by the lower specified value. The queue shaping type is selected in the Bandwidth screen.

24/48-Port 10/100 + 4-Port Gigabit Smart Switch with Resilient Clustering Technology and PoE

Chapter 5

Configuration Using the Web-based Utility

Spanning Tree

Spanning Tree Protocol (STP) provides tree topography for any arrangement of bridges. STP also provides one path between end stations on a network, eliminating loops.

Loops occur when alternate routes exist between hosts. Loops in an extended network can cause bridges to forward traffic indefinitely, resulting in increased traffic and reducing network efficiency.

The Switch supports the Classic STP version of STP, which provides a single path between end stations, avoiding and eliminating loops.

Spanning Tree > STP Status

The STP Status screen displays the STP status on the Switch. This information is read-only and cannot be modified.

Root Forward delay (sec) The device forward delay time.

The Forward Delay Time indicates the amount of time in seconds a bridge remains in a listening and learning state before forwarding packets. The default is 15 seconds. The range is 4 to 30 seconds.

Topology Changes Counts The total amount of STP

state changes that have occurred.

Last Topology Change The elapsed time since the bridge

was initialized or reset, and the last topographic change occurred. The time is displayed in a day hour minute second format, for example, 2 days 5 hours 10 minutes and 4 seconds.

Spanning Tree > Global STP

The Global STP screen contains global parameters for STP on the Switch.

Spanning Tree > STP Status

Spanning Tree State Indicates whether STP is enabled

on the device.

Spanning Tree Mode The STP mode by which STP is

enabled on the device.

Bridge ID The Bridge priority and MAC address.

Designated Root Identifies the bridge priority and MAC

address of the root bridge.

Root Port The port number that offers the lowest cost

path from this bridge to the Root Bridge. It is significant when the Bridge is not the Root. The default is 0.

Root Path Cost The cost of the path from this bridge to

the root.

Root Maximum Age (sec) The device Maximum Age

Time, which indicates the amount of time in seconds a bridge waits before sending configuration messages. The default is 20 seconds. The range is 6 to 40 seconds.

Root Hello Time (sec) The device Hello Time. The Hello

Time indicates the amount of time in seconds a root bridge waits between configuration messages. The default is 2 seconds. The range is 1 to 10 seconds.

Spanning Tree > Global STP

Global Setting

Spanning Tree State Select Enable or Disable from the

drop-down menu to enable or disable STP on the Switch. The default is Enable.

BPDU Handling Determines how BPDU packets are

managed when STP is disabled on the port or Switch. BPDUs are used to transmit spanning tree information. The possible values are:

Filtering Filters BPDU packets when spanning tree is

•

disabled on an interface.

Flooding Floods BPDU packets when spanning tree is

•

disabled on an interface. This is the default value.

Path Cost Default Values The method used to assign

default path costs to STP ports. The possible values are:

Short Specifies a range of 1-65,535 for port path

•

costs.

Long Specifies a range of 1-200,000,000 for port path

•

costs. The default path costs assigned to an interface varies according to the selected method. This is the default value.

24/48-Port 10/100 + 4-Port Gigabit Smart Switch with Resilient Clustering Technology and PoE

Chapter 5

Configuration Using the Web-based Utility

Bridge Settings

Priority Specifies the bridge priority value. When

switches or bridges are running STP, each is assigned a priority. After exchanging BPDUs, the device with the lowest priority value becomes the Root Bridge. The default value is 32768. The value must be a multiple of 4096. For example, 4096, 8192, 12288, etc. The range is 0 to 65535.

Hello Time Specifies the device Hello Time (the amount of

time in seconds a root bridge waits between configuration messages). The default is 2 seconds. The range is 1 to 10 seconds.

Max Age Specifies the device Maximum Age Time (the

amount of time in seconds that a bridge waits before sending configuration messages). The default is 20 seconds. The range is 6 to 40 seconds.

Forward Delay Specifies the device forward delay time

(the amount of time in seconds a bridge remains in a listening and learning state before forwarding packets). The default is 15 seconds. The range is 4 to 30 seconds.

Choose settings for the Hello Time, Max Age, and Forward Delay parameters so that both of the following are true:

Max Age ≥ 2 × (Hello Time + 1) 2 × (Forward Delay – 1) ≥ Max Age

Click Save Settings to save the changes, or Cancel Changes to cancel the changes.

Spanning Tree > STP Port Settings

Port Fast Indicates if Fast Link is enabled on the port.

If Fast Link mode is enabled for a port, the Port State is automatically placed in the Forwarding state when the port link is up. Fast Link optimizes the STP protocol convergence. STP convergence can take 30-60 seconds in large networks. The possible values are Enable, Auto, and

Disable. The default is Disable.

Port State Displays the current STP state of a port. If

enabled, the port state determines what forwarding action is taken on traffic. Possible port states are:

Disabled STP is currently disabled on the port. The

•

port forwards traffic while learning MAC addresses.

Blocking The port is currently blocked and cannot

•

forward traffic or learn MAC addresses.

Listening The port is in Listening mode. The port

•

cannot forward traffic nor can it learn MAC addresses.

Learning The port is in Learning mode. The port

•

cannot forward traffic, but can learn new MAC addresses.

Forwarding The port is in Forwarding mode. The port

•

can forward traffic and learn new MAC addresses.

Speed Displays the speed at which the port is operating.

Path Cost Indicates the port contribution to the root path

cost. The path cost is adjusted to a higher or lower value, and is used to forward traffic when a path being rerouted. The default value is 2000000 for a 10M port, 200000 for a 100M port, and 20000 for a 1G port or a LAG.

The STP Port Settings screen allows network administrators to assign STP settings to specific interfaces.

Spanning Tree > STP Port Settings

Interface Indicates the port or LAG on which STP is

enabled. Select either Port (default) or LAG, then select the interface from the drop-down menu.

Enable STP Select this to enable STP on the port. The

default is Enabled.

Default Path Cost When selected the default path cost is

implemented. The default is unselected.

Priority Priority value of the port. This value influences

the port choice when a bridge has two ports connected in a loop. The range of values is 0 -240. The default is 128.

Designated Bridge ID Displays the bridge priority and

the MAC Address of the designated bridge.

Designated Port ID Displays the selected port’s priority

and interface.

Designated Cost Displays the cost of the port

participating in the STP topology. Ports with a lower cost are less likely to be blocked if STP detects loops.

Forward Transitions Displays the number of times the

port has changed from the Blocking state to Forwarding state.

Click Update to update the screen with your changes.

Click Save Settings to save the changes, or Cancel

Changes to cancel the changes.

24/48-Port 10/100 + 4-Port Gigabit Smart Switch with Resilient Clustering Technology and PoE

Chapter 5

Configuration Using the Web-based Utility

Multicast

Multicast configuration options include IGMP Snooping, Bridge Multicast, and Bridge Multicast Forward All.

Multicast > IGMP Snooping

When IGMP Snooping is enabled globally, all IGMP packets are forwarded to the CPU. The CPU analyzes the incoming packets and determines:

Which ports want to join which Multicast groups

•

Which ports have Multicast routers generating IGMP

•

queries

Host Timeout Indicates the amount of time host waits to

receive a message before timing out. The default time is

260 seconds.

MRouter Timeout Indicates the amount of the time the

Multicast router waits to receive a message before it times out. The default value is 300 seconds.

Leave Timeout Indicates the amount of time the host

waits, after requesting to leave the IGMP group and not receiving a Join message from another station, before timing out. If a Leave Timeout occurs, the switch notifies the Multicast device to stop sending traffic The Leave Timeout value is either user-defined, or an immediate leave value. The default timeout is 10 seconds.

Click Update to update the screen with your changes.

Click Save Settings to save the changes, or Cancel Changes to cancel the changes.

Multicast > Bridge Multicast

The Bridge Multicast screen displays the ports and LAGs attached to the Multicast service group in the Ports and LAGs tables. The Port and LAG tables also reflect the manner in which the port or LAGs joined the Multicast group.

Which routing protocols are forwarding packets and

•

Multicast traffic

Ports requesting to join a specific Multicast group issue an IGMP report, specifying that Multicast group is accepting members. This results in the creation of the Multicast filtering database.

The Bridge Multicast Forward All screen contains two sections, IGMP Global and VLAN IGMP Settings. These sections and the fields they contain are described below.

IGMP Global

Enable IGMP Snooping Select this option to enable

IGMP Snooping on the device. IGMP Snooping can be enabled only if Bridge Multicast Filtering is enabled. The default is disabled (option not selected).

VLAN IGMP Settings

VLAN ID Select the VLAN ID from the drop-down menu.

IGMP Status Select this option to enable IGMP snooping

on the VLAN. Default is disabled (option not selected).

Auto Learn Select this option to enable Auto Learn on the

device. If Auto Learn is enabled, the device automatically learns where other Multicast groups are located. The default is enabled (option is selected).

Multicast > Bridge Multicast

Ports can be added either to existing groups or to new Multicast service groups. The Bridge Multicast screen permits new Multicast service groups to be created. The Bridge Multicast screen also assigns ports to a specific Multicast service address group.

The Bridge Multicast screen contains the following fields:

Unit No. Select t

VLAN ID Identifies a VLAN to be configured to a Multicast

service.

Bridge Multicast Address Identifies the Multicast group

MAC address/IP address.

he unit which you are managing

24/48-Port 10/100 + 4-Port Gigabit Smart Switch with Resilient Clustering Technology and PoE

Chapter 5

Configuration Using the Web-based Utility

Enable Bridge Multicast Filtering Select this option to

TBD. The default is disabled.

Interface, Gigabit, LAG Lists switch interfaces and LAGs

that can be added to a Multicast service. The configuration options are as follows:

Static Indicates the port is user-defined.

•

Dynamic Indicates the port is configured

•

dynamically.

Forbidden Forbidden ports are not included the

•

Multicast group, even if IGMP snooping designated the port to join a Multicast group. [TBD - is this a valid option? It’s not in the screen]

None The port is not configured for Multicast service.

•

Click Add to List to add the configured static multicast address to the table at the bottom of the screen.

Click Show All to display all multicast addresses on all VLANs in the table at the bottom of the screen.

Click Save Settings to save the changes, or Cancel Changes to cancel the changes.

Multicast > Bridge Multicast Forward All

Dynamic The port is configured dynamically.

•

None The port is not configured for Multicast service.

•

Gigabit Gigabit ports with the following configuration

options:

Static The Gigabit port is user-defined.

•

Dynamic The Gigabit port is configured dynamically.

•

None The Gigabit port is not configured for Multicast

•

service.

LAG LAGs with the following configuration options:

Static The LAG is user-defined.

•

Dynamic The LAG is configured dynamically.

•

None The LAG is not configured for Multicast service.

•

Click Save Settings to save the changes, or Cancel Changes to cancel the changes.

SNMP

The SNMP tab includes the following screens: Global Parameters, Views, Group Profile, Group Membership, Communities, Notification Filter, and Notification Recipient.

The Bridge Multicast Forward All screen contains fields for attaching ports or LAGs to a device that is attached to a neighboring Multicast router or switch.

Multicast > Bridge Multicast Forward All

Once IGMP Snooping is enabled, Multicast packets are forwarded to the appropriate port or VLAN.

The Bridge Multicast Forward All screen contains the following fields:

Unit No. Select t

VLAN ID Displays the VLAN for which Multicast

parameters are displayed.

Interface Interfaces with the following configuration

options:

Static The port is user-defined.

•

he unit which you are managing

SNMP > Global Parameters

The Global Parameters screen contains parameters for defining SNMP notification parameters.

Local Engine ID Indicates the local device engine ID. The

field value is a hexadecimal string. Each byte in hexadecimal character strings consists of two hexadecimal digits. Each byte can be separated by a period or a colon. The Engine ID must be defined before SNMPv3 is enabled. For standalone devices, select a default Engine ID that is comprised of Enterprise number and the default MAC address. For a stackable system configure the Engine ID, and verify that the Engine ID is unique for the administrative domain. This prevents two devices in a network from having the same Engine ID.

24/48-Port 10/100 + 4-Port Gigabit Smart Switch with Resilient Clustering Technology and PoE

Chapter 5

Configuration Using the Web-based Utility

Use Default Uses the device generated Engine ID. The

default Engine ID is based on the device MAC address and is defined per standard as:

First 4 octets First bit = 1, the rest is IANA Enterprise

•

number.

Fifth octet Set to 3 to indicate the MAC address that

•

follows.

Last 6 octets MAC address of the device.

•

SNMP Notifications Indicates if the device can send

SNMP notifications.

Authentication Notifications Indicates if SNMP

Authentication failure notification is enabled on the device.

SNMP > Views

The SNMP Views screen provides access or block access to device features or feature aspects. For example, a view can be defined that states that SNMP Group A has Read Only (R/O) access to Multicast groups, while SNMP Group B has Read-Write (R/W) access to Multicast groups. Feature access is granted via the MIB name, or MIB Object ID.

Click Add to List to add the Views configuration to the Views Table at the bottom of the screen.

SNMP > Group Profile

The Group Profile screen allows you to create SNMP groups and assign SNMP access control privileges to SNMP groups. Groups allow network managers to assign access rights to specific device features, or features aspects.

SNMP > Group Profile

Group Name Displays the user-defined group to which

access control rules are applied. The field range is up to 30 characters.

SNMP > Views

View Name Displays the user-defined views. The options

are as follows:

Default Displays the default SNMP view for read and

•

read/write views.

DefaultSuper Displays the default SNMP view for

•

administrator views.

Subtree ID Tree Indicates the device feature OID included

or excluded in the selected SNMP view. The options to select the Subtree are as follows:

Select from List Select the Subtree from the list.

•

Insert Enables a Subtree not included in the Select

•

from List field to be entered.

View Type Indicates if the defined OID branch will be

included or excluded in the selected SNMP view.

Security Model Defines the SNMP version attached to

the group. The possible field values are:

SNMPv1 SNMPv1 is defined for the group.

•

SNMPv2 SNMPv2 is defined for the group.

•

SNMPv3 SNMPv3 is defined for the group.

•

Security Level Defines the security level attached to the

group. Security levels apply to SNMPv3 only. The possible field values are:

No Authentication Indicates that neither the

•

Authentication nor the Privacy security levels are assigned to the group.

Authentication Authenticates SNMP messages, and

•

ensures the SNMP messages origin is authenticated.

Privacy Encrypts SNMP messages.

•

Operation Defines the group access rights. The possible

field values are:

Read The management access is restricted to read-

•

only, and changes cannot be made to the assigned SNMP view.

Write The management access is read-write and

•

changes can be made to the assigned SNMP view.

Notify Sends traps for the assigned SNMP view.

•

24/48-Port 10/100 + 4-Port Gigabit Smart Switch with Resilient Clustering Technology and PoE

Chapter 5

Configuration Using the Web-based Utility

SNMP > Group Membership

The Group Membership screen provides information for assigning SNMP access control privileges to SNMP groups.

SNMP > Group Membership

User Name Provides a user-defined local user list.

Engine ID Indicates either the local or remote SNMP entity

to which the user is connected. Changing or removing the local SNMP Engine ID deletes the SNMPv3 User Database.

If both privacy and authentication are required, 32 bytes are defined. Each byte in hexadecimal character strings is two hexadecimal digits. Each byte can be separated by a period or a colon.

Privacy Key Defines the Privacy Key (LSB). If only

authentication is required, 20 bytes are defined. If both privacy and authentication are required, 36 bytes are defined. Each byte in hexadecimal character strings is two hexadecimal digits. Each byte can be separated by a period or colon.

Click Add to List to add the Group Membership configuration to the respective table at the bottom of the screen.

SNMP > Communities

The Communities screen is used to define SNMP communities. The Communities screen contains the following three areas: Communities, Basic Table and Advanced Table.

Local Indicates that the user is connected to a local

•

SNMP entity.

Remote Indicates that the user is connected to a

•

remote SNMP entity. If the Engine ID is defined, remote devices receive inform messages.

Group Name Contains a list of user-defined SNMP

groups. SNMP groups are defined in the SNMP Group Profile page.

Authentication Method Use this to enable or disable

Authentication between the SNMP Agent on the Switch and the SNMP Manager.

None Disables authentication between the SNMP

•

Agent on the Switch and the SNMP Manager.

MD5 Password Enables authentication using HMAC-

•

MD5-96 password authentication.

SHA Password Enables authentication using HMAC-

•

SHA-96 password authentication.

MD5 Key Enables authentication using the HMAC-

•

MD5 algorithm.

SHA Key Enables authentication using HMAC-SHA-96

•

authentication.

Password Defines the local user password. Local user

passwords can contain up to 159 characters.

Authentication Key Defines the HMAC-MD5-96 or

HMAC-SHA-96 authentication level. The authentication and privacy keys are entered to define the authentication key. If only authentication is required, 16 bytes are defined.

SNMP > Communities

SNMP Management Station Defines the management

station IP address for which the advanced SNMP community is defined. There are two definition options: either select the first radio button and enter the management station IP address in the field (default), or select All to include all management station IP addresses.

Community String Defines the password used to

authenticate the management station to the device.

Basic Enables SNMP Basic mode for a selected community

and contains the following fields:

Access Mode Defines the access rights of the community.

The possible field values are:

Read Only Management access is restricted to read-

•

only, and changes cannot be made to the community.

24/48-Port 10/100 + 4-Port Gigabit Smart Switch with Resilient Clustering Technology and PoE

Chapter 5

Read Write Management access is read-write and

•

changes can be made to the device configuration, but not to the community.

SNMP Admin User can access all device configuration

•

options, and can modify the community.

View Name Contains a list of user-defined SNMP views.

Advanced Enables SNMP Advanced mode for a selected

community and contains the following fields:

Group Name Defines advanced SNMP communities

group names.

Click Add to List to add the Communities configuration to the respective Table at the bottom of the screen.

Base Table

Management Station

IP address for which the basic SNMP community is defined

Community String Displays the password used to

authenticate the management station to the device.

Access Mode Displays the access rights of the

community.

View Name Displays the user-defined SNMP view.

Advanced Table

Management Station Displays the management station

IP address for which the basic SNMP community is defined.

Community String Displays the password used to

authenticate the management station to the device.

Group Name Displays advanced SNMP communities

group name.

Displays the management station

Configuration Using the Web-based Utility

Filter Name Contains a list of user-defined notification

filters.

New Filter Name Specifies a new filter name.¶

New Object Identifier Tree Displays the OID for which

notifications are sent or blocked. If a filter is attached to an OID, traps or informs are generated and sent to the trap recipients. Object IDs are selected from either the Select from List or the Object ID List. There are two configuration options:

Select from List Select the OID from the list provided.

•

Object ID Enter an OID not offered in the Select from

•

List option.

Filter Type Indicates whether informs or traps are sent

regarding the OID to the trap recipients.

Excluded Restricts sending OID traps or informs.

•

Included Sends OID traps or informs.

•

Click Add to List to add the Notification Filter configuration to the Notification Filter Table at the bottom of the screen.

SNMP > Notification Recipient

The Notification Recipient screen contains information for defining filters that determine whether traps are sent to specific users, and the trap type sent. SNMP notification filters provide the following services:

Identifying Management Trap Targets

•

Trap Filtering

•

Selecting Trap Generation Parameters

•

Providing Access Control Checks

•

SNMP > Notification Filter

The Notification Filter screen permits filtering traps based on OIDs. Each OID is linked to a device feature or a feature aspect. The Notification Filter screen also allows network managers to filter notifications.

Recipient IP Indicates the IP address to whom the traps

are sent.

SNMP > Notification Filter

24/48-Port 10/100 + 4-Port Gigabit Smart Switch with Resilient Clustering Technology and PoE

SNMP > Notification Recipient

Chapter 5

Configuration Using the Web-based Utility

Notification Type Defines the notification sent. The

possible field values are:

Traps Indicates traps are sent.

•

Informs Indicates informs are sent.

•

SNMPv1,2 Enables SNMPv1,2 as the Notification

Recipient. Either SNMPv1,2 or SNMPv3 can be enabled at any one time, but not both at the same time. If SNMPv1,2 is enabled, the Community String and Notification Version fields are enabled for configuration:

Community String Identifies the community string of

the trap manager.

Notification Version Determines the trap type. The

possible field values are:

SNMP V1 Indicates SNMP Version 1 traps are sent.

•

SNMP V2 Indicates SNMP Version 2 traps are sent.

•

SNMPv3 Enables SNMPv3 as the Notification Recipient.

Either SNMPv1,2 or SNMPv3 can be enabled at any one time, but not both at the same time. If SNMPv3is enabled, the User Name and Security Level fields are enabled for configuration:

User Name Defines the user to whom SNMP notifications

are sent.

Security Level Defines the means by which the packet is

authenticated. The possible field values are:

No Authentication Indicates the packet is neither

•

authenticated nor encrypted.

Authentication Indicates the packet is

•

authenticated.

Privacy Indicates the packet is both authenticated

•

and encrypted.

UDP Port Displays the UDP port used to send notifications.

The default is 162.

Filter Name Indicates if the SNMP filter for which the

SNMP Notification filter is defined.

Timeout

waits before resending informs. The default is 15 seconds.

Retries Indicates the amount of times the device resends

an inform request. The default is 3 seconds.

Click Add to List to add the Notification Recipient configuration to the relevant table at the bottom of the screen.

Indicates the amount of time (seconds) the device

Admin

The Admin tab provides access to system administration settings and tools. It includes the following screens:

Admin > User Authentication

The User Authentication screen is used to modify user account information. You can modify the password or user name for an existing account, or create additional accounts.

User Authentication

Authentication Type Defines the user authentication

methods. Combinations of all the authentication methods can be selected. The possible field values are:

Local Authenticates the user at the device level.

•

The device checks the user name and password for authentication.

RADIUS Authenticates the user at the RADIUS server.

•

None Assigns no authentication method to the

•

authentication profile.

Local User Edit

User Name Displays the user name.

Password The password for the specified User Name. For

security purposes, the password is not displayed; instead, a“*” is displayed for each character. The password must be between 1 and 159 characters in length.

Confirm Password Confirms the password when you

change an existing password or create a new one (for a new User Name). The password entered into this field must be exactly the same as the password entered in the Password field.

Add to List/Update The name of this button depends on

the function being performed. When you create a new user name, it is Add to List; when you edit an existing password or user name, it is Update. For detailed information on its use, refer to the “Local Users Table” section below.

Local Users Table

The Local Users Table at the bottom of the screen lists all existing user names (for security purposes, passwords are

24/48-Port 10/100 + 4-Port Gigabit Smart Switch with Resilient Clustering Technology and PoE

Chapter 5

Configuration Using the Web-based Utility

not displayed). You use this table to edit or delete existing user names and/or passwords, as described below.

Create a new user name

Make sure no entry is selected in the Local Users Table. If one is selected, click Cancel. Enter the new user name in the User Name field, and the password in the Password and Confirm Password fields. Then click Add to List to add a new entry to the Local Users Table.

Change a password

Highlight the associated user name in the Local Users Table. The User Name, Password, and Confirm Password fields will then be populated for editing. Enter the new password in the Password field, then enter it again in the Confirm Password Field. Then click Update to save the changes to the Local Users Table.

Change a user name

Highlight the user name in the Local Users Table. The User Name, Password, and Confirm Password fields will then be populated for editing. Modify the user name in the User Name field, then click Update to update the entry in the

Local Users Table.

A list of all static addresses on the Switch appears at the bottom of the screen. The top part of the screen contains the following fields for creating static address entries:

Interface The interface that is associated with the static

address. Select Port or LAG, then select the desired interface from the accompanying drop-down menu.

MAC Address This is the physical address that is being

mapped to the specified interface.

VLAN ID The VLAN ID number (1-4094) of the configured

VLAN that is associated with the specified interface. If you use this field the VLAN Name field is disabled.

VLAN Name The name of the VLAN associated with the

specified interface. If you use this field, the VLAN ID field is disabled.

Status The static address type. The possible values are::

Permanent (Default) Keep the entry permanently.

•

Delete on Reset Delete the entry when the Switch is

•

reset.

Delete on Timeout Delete the entry when a timeout

•

occurs. The default timeout period is 300 seconds.

Secure The entry is defined for locked ports.

•

Delete a user name

Select the user name from the table, then click Delete.

If you accidentally select the wrong entry in the table, click Cancel to unselect the highlighted user name.

Click Save Settings to save the changes, or Cancel Changes to cancel the changes.

Admin > Static Address

The Static Address screen lets you assign a static address to a specific Switch interface. A static address is bound to its assigned interface and cannot be moved. If a static address is seen on an interface to which it is not assigned, the address is ignored and is not written to the address table.

After you have entered the information listed above, click Add to List. The static address will then appear in the list of static addresses. To delete a static MAC address from the list, select the entry in the list, then click Delete.

Admin > Dynamic Address

The Dynamic Address screen lets you query the Dynamic Address Table to find specific dynamic MAC addresses, or display MAC addresses associated with a specific interface or VLAN. Query criteria include interface type, MAC address, VLAN, and table sort key. You can also set the Dynamic MAC Address Table’s address aging parameter or clear the table.

24/48-Port 10/100 + 4-Port Gigabit Smart Switch with Resilient Clustering Technology and PoE

Chapter 5

Configuration Using the Web-based Utility

Address Aging Specifies the amount of time (in seconds)

that a MAC address remains in the Dynamic MAC Address table before it times out, if no traffic from the source is detected. The default value is 300 seconds.

Clear Table If selected, this clears the MAC Address

table.

Query

Interface Use this to query the table for a specific port or

LAG. Select Port or LAG and select the interface from the drop-down menu.

MAC Address Use this to query the table for a specific

MAC address. Enter the MAC address in the field.

VLAN ID Use this to query the table for a specific VLAN ID.

Enter the VLAN ID in the field.

Address Table Sort Key Specifies how the search results

will be sorted—by Address, VLAN, or Interface.

Specify the search criteria (Interface, MAC Address, or VLAN) and the sort method for the search results, then click Query to display the dynamic addresses matching the search criteria.

Target Port The port that will mirror the traffic on the

source port.

Source Port The port whose traffic will be monitored.

Type Allows you to select which traffic to mirror to the

target port; receive, transmit, or both.

RxOnly (Default) Mirror only received traffic.

•

TxOnly Mirror only transmitted traffic.

•

Both Mirror both received and transmitted traffic.

•

Specify the source port, the traffic type to be mirrored, and the target port, then click Add to List. The mirror session is displayed in the text box.

Admin > Cable Test

The Cable Test screen uses Time Domain Reflectometry (TDR) technology to test the quality and characteristics of a copper cable attached to a port. The cable being tested can be up to 120 m in length. Before you can perfom the test, the port to which the cable is connected must be in the down state.

Admin > Port Mirroring

Port mirroring monitors and mirrors network traffic by forwarding copies of incoming and outgoing packets from one port to a monitoring port. Port mirroring can be used as diagnostic tool and/or a debugging feature. Port mirroring also enables switch performance monitoring.

Network administrators configure port mirroring by selecting a target port to which the packets are copied, and the source port(s) from which the packets are copied. Port mirroring supports a maximum of one target port and four source ports.

Admin > Cable Test

The Cable Test screen contains the following fields.

Unit No. The unit to which the test cable is connected.

Port The port to which the test cable is connected.

Test Result The results of the test. Possible values are:

OK The cable passed the test.

•

No Cable No cable is connected to the port.

•

Open Cable The cable is connected on only one side.

•

Short Cable A short has occurred in the cable.

•

Undefined

•

The test could not be properly performed.

Admin > Port Mirroring

Set the following attributes for port mirroring using the Port Mirroring screen.

24/48-Port 10/100 + 4-Port Gigabit Smart Switch with Resilient Clustering Technology and PoE

Last Update Displays when the last cable test was

performed on the port.

Test Click this to start testing the cable attached to the

port. The test results will appear in the Test Result column.

Chapter 5

Admin > Cable Test - Gigabit Ports

Advanced (Gigabit ports only) Click the Advanced

button to open the Copper Cable Extended Feature screen. The Copper Cable Extended Feature screen contains the following fields.

Cable Status Displays the cable status.

•

Speed Indicates the speed at which the cable is

•

transmitting packets.

Link Status Displays the current link status.

•

Pair The pair of cables under test.

•

Distance to Fault Indicates the distance between the

•

port and where the cable error occurred.

Status Displays the cable status.

•

Cable length Displays the cable length.

•

Channel Displays the cable’s channel.

•

Polarity Automatic polarity detection and correction

•

allows for automatic adjustment of wiring errors on all RJ-45 ports.

Pair Skew Reaction or transmission time in

•

nanoseconds for the selected cable pair and given cable length.

Test Now Press this button to begin the cable test.

•

Configuration Using the Web-based Utility

Admin > Save Configuration

The Save Configuration screen allows you to upload Switch configuration files to a TFTP server, or to download saved Switch configuration files from a TFTP server or from your computer via the HTTP interface.

Via TFTP Select this to upload to or download from a

TFTP server. When you select this option, the following fields are displayed.

UPGRADE Select this option to restore the Switch

•

configuration from the file located on a TFTP server.

TFTP Server Enter the TFTP Server IP Address that

•

contains the source file to download.

File Name Enter the name of the configuration file

•

on the TFTP Server.

BACKUP To back up the Switch configuration to a

•

TFTP server, enter the TFTP server address.

TFTP Server Enter the TFTP Server IP Address to

•

which the configuration file will be saved.

File Name Enter the name of the configuration

•

file. The default is none (blank).

Via HTTP Select this to download a configuration file to

the Switch from your computer using the HTTP interface. (HTTP only supports the upgrade operation. You cannot back up the configuration file using HTTP.) When you select this option, the following field is displayed.

Source File Enter the name and path of the file or

•

click Browse to locate the configuration file.

Click Save Settings to begin the download or upload.

After you have downloaded the configuration file to the Switch during an upgrade, the configuration file’s settings will not take effect until the system is rebooted.

Admin > Cable Test - Gigabit Ports > Copper Cable Extended Feature

24/48-Port 10/100 + 4-Port Gigabit Smart Switch with Resilient Clustering Technology and PoE

Chapter 5

Admin > Firmware Upgrade

Configuration Using the Web-based Utility

Admin > Reboot

Admin > Firmware Upgrade

The Firmware Upgrade screen allows you to download firmware upgrade files from a TFTP server, or from your computer via the HTTP interface.

Via TFTP Select this to download from or upload to a

TFTP server. When you select this option, the following fields are displayed.

UPGRADE Select this option to upgrade the switch

•

from a file located on a TFTP server.

File Type Select the type of file to download,

•

either Software Image or Boot Code.

TFTP Server Enter the TFTP Server IP Address that

•

contains the source file to upgrade from.

File Name Enter the name of the upgrade file on

•

the TFTP Server.

BACKUP To back up the firmware to a TFTP server,

•

enter the TFTP server address.

TFTP Server Enter the TFTP Server IP Address to

•

which the firmware file will be saved.

File Name Displays the name of the firmware file.

•

This field cannot be edited.

Via HTTP Select this to download an upgrade file using

the HTTP interface. When you select this option, the following field is displayed:

Admin > Factory Default

The Factory Default screen allows network managers to reset the Switch to the factory defaults shipped with the switch. This results in erasing the configuration file.

NOTE: Restoring factory defaults erases all

current configuration settings. You can save a copy of your configuration settings beforehand using the Admin > Save Configuration screen.

Admin > Factory Default

To restore the factory defaults, click Restore Default, then click OK to confirm. Then restart the Switch by going to the Admin > Reboot screen; once there, select the master unit number (if applicable), click Reboot, then click OK.

Source File Enter the name and path of the file or

•

click Browse to locate the upgrade file.

Click Save Settings to begin the download or upload.

Admin > Reboot

The Reboot screen is used to reset one Switch or the entire stack. From the drop-down menu, select the unit number or Stack, then click Reboot, then click OK to confirm. The configuration settings are automatically saved before the system reboots.

24/48-Port 10/100 + 4-Port Gigabit Smart Switch with Resilient Clustering Technology and PoE

Chapter 5

Admin > Logging

Configuration Using the Web-based Utility

Admin > Server Logs

Admin > Logging

The System Logs allow you to view device events in real time, and recording the events for later usage. System Logs record and manage events and report errors or informational messages.

Event messages have a unique format, as per the SYSLOG protocols recommended message format for all error reporting. For example, Syslog and local device reporting messages are assigned a severity code, and include a message mnemonic, which identifies the source application generating the message. It allows messages to be filtered based on their urgency or relevancy. Each message severity determines the set of event logging devices that are sent per each event logging.

Enable Logging If this option is selected, device global

logs for Cache, File, and Server Logs are enabled. The default is enabled.

Emergency The system is not functioning.

•

Alert The system needs immediate attention.

•

Critical The system is in a critical state.

•

Error A system error has occurred.

•

Server Specifies the server to which logs can be sent.

UDP Port Defines the UDP port to which the server logs

are sent. The possible range is 1 to 65535. The default value is 514.

Facility Defines a user-defined application from which

system logs are sent to the remote server. Only one facility can be assigned to a single server. If a second facility level is assigned, the first facility is overridden. All applications defined for a device utilize the same facility on a server. The default value is Local 7. The range of values is Local

0 to Local 7.

Description Provides a user-defined server description.

Minimum Severity Indicates the minimum severity from

which logs are sent to the server. For example, if Notice is selected, all logs from a Notice severity and higher are sent to the remote server.

Click Add to List to add the Server Log configuration to the Server Log Table at the bottom of the screen.

Admin > Memory Logs

The Memory Log screen displays all system logs in the chronological order that they are saved in RAM (Cache).

Warning A system warning has occurred.

•

Notice The system is functioning properly, but system

•

notice has occurred.

Informational Provides device information.

•

Debug Provides detailed information about the log. If

•

a Debug error occurs, contact Customer Tech Support.

If you enable Logging, use the checkboxes to set the level of event messages to be logged to RAM (Memory Logs) and flash memory (Flash Logs), then click Save Settings.

Admin > Server Logs

The Server Logs screen contains information for viewing and configuring the Remote Log Servers. New log servers can be defined, and the log severity sent to each server.

24/48-Port 10/100 + 4-Port Gigabit Smart Switch with Resilient Clustering Technology and PoE

Log Index Displays the log number.

Log Time Displays the date and time of log generation.

Admin > Memory Logs

Chapter 5

Severity Displays the log severity.

Description Displays the log message text.

Clear Logs Click this button to clear the logs.

Admin > Flash Logs

The Flash Log screen contains information about log entries saved to the Log File in flash memory, including the time the log was generated, the log severity, and a description of the log message. The Message Log is available after reboot.

Configuration Using the Web-based Utility

Admin > Flash Logs

Log Index Displays the log number.

Log Time Displays the date and time at which the log

was generated.

Severity Displays the log severity.

Description Displays the log message text.

Clear Logs Click this button to clear the logs.

Logout

The Logout tab is used to terminate the login session. When you select the Logout tab, the following dialog box asks you to verify if you want to log out.

Logout Verification

Select Yes to log out of the web-based configuration utility.

24/48-Port 10/100 + 4-Port Gigabit Smart Switch with Resilient Clustering Technology and PoE

Appendix A

Appendix A: About Gigabit Ethernet and Fiber Optic Cabling

Gigabit Ethernet

Gigabit Ethernet runs at speeds of 1Gbps (Gigabit per second), ten times faster than 100Mbps Fast Ethernet, but it still integrates seamlessly with 100Mbps Fast Ethernet hardware. Users can connect Gigabit Ethernet hardware with either fiber optic cabling or copper Category 5e cabling, with fiber optics more suited for network backbones. As the Gigabit standard gradually integrates into existing networks, current computer applications will enjoy faster access time for network data, hardware, and Internet connections.

About Gigabit Ethernet and Fiber Optic Cabling

Fiber Optic Cabling

Fiber optic cabling is made from flexible, optically efficient strands of glass and coated with a layer of rubber tubing, fiber optics use photons of light instead of electrons to send and receive data. Although fiber is physically capable of carrying terabits of data per second, the signaling hardware currently on the market can handle no more than a few gigabits of data per second.

Fiber cables come with two main connector types. The most commonly used fiber optic cable is multi-mode fiber cable (MMF), with a 62.5 micron fiber optic core. Single-mode fiber cabling is somewhat more efficient than multi-mode but far more expensive, due to its smaller optic core that helps retain the intensity of traveling light signals. A fiber connection always require two fiber cables: one transmits data, and the other receives it.

Each fiber optic cable is tipped with a connector that fits into a fiber port on a network adapter, hub, or switch. In the USA, most cables use a square SC connector that slides and locks into place when plugged into a port or connected to another cable. In Europe, the round ST connector is more prevalent.

For Gigabit Ethernet, you must use the Linksys MGBT1, MGBSX1, or MGBLH1 miniGBIC modules with the Linksys Gigabit Switches. The MGBSX1 and the MGBLH1 require fiber cabling with LC connectors, and the MGBT1 requires a Category 5e Ethernet cable with an RJ-45 connector.

For Fast Ethernet, you must use the MFEFX1 (100BASE-FX) or MFELX1 (100BASE-LX) SFP transceivers.

24/48-Port 10/100 + 4-Port Gigabit Smart Switch with Resilient Clustering Technology and PoE

Appendix B

About Switch Stacking

Appendix B: About Switch Stacking

A switch may operate in one of two modes: Stack or Standalone. You can select either mode during software

boot or using the web-based utility’s Setup > Summary screen, with the new mode taking effect after the unit is reset. The factory default is Stack mode.

Standalone Mode

A switch operating in Standalone mode runs as an independent, single unit. All ports of a standalone switch operate as normal Ethernet links. A Standalone switch does not participate in a Stack even if physically connected to a Stack.

Stack Mode

A switch operating in Stack mode is not an independent unit, but a member of an organized group of switches known as a Stack. A Stack consists of one Master control switch, a Master Backup switch, and up to four Stack Member SLM224G4PS switches, or up to two Stack Member SLM248G4PS switches.

As a special case, a unit in Stack mode not connected

•

to any other units may operate as a “stack–of-one”.

NOTE: When a unit is in Stack mode, two of

its ports are reserved for use with stacking links, and cannot be used for regular network connections.

Two ports of each unit in Stack mode (ports G1 and G2) are reserved for stacking links, and cannot be used for regular network connections.

Stack Building Quick Start

Stacking allows you to build a switch with many more ports than would be available in a single unit. The stack is managed by one of the units called the Master and all the other units serve as ports only.

When building a stack there are two distinct cases:

Building a stack from scratch

•

Adding units to a running (operational) stack to make

•

it bigger

Building a New Stack

To build a new self-ordering stack, use a group of switches, each of which is set to the factory defaults.

All that is necessary to do is to connect the units physically (through the stacking ports, using standard Ethernet cables) and turn the units on. After a short interval the stack will become operational with one of the units selected as the Master of the stack. The unit selected as Master will be indicated by the Stack Master LED on its front panel lit amber. If a serial console connection is desired, the serial cable should be connected to the console port of the unit serving as stack Master.

If the units to be used in building the new stack were used before then it is highly recommended to reset them back to factory default (by holding the reset button for at least 10 seconds) and proceeding as described above.

Adding Units to a Running Stack

Restore the factory defaults to each of the units to be added to the stack. Then connect the units physically to the stack and turn the units on. After a short while the new units will become stack members.

Manually Ordered Stack

The system administrator can manually decide which unit will be the Master. To do that the system administrator has to assign a unique Unit ID from 1 to 6 (1 to 4 for SLM248G4PS-only stacks) to each stack member.

NOTE: It is highly recommended that if any

unit is assigned its Unit ID manually, then all the units be assigned their Unit IDs manually.

It is NOT recommended to have a mixed case with some Unit IDs assigned manually, and others automatically allocated at runtime by the stack Master (even though such a mixed stack may well function flawlessly).

Building a New Stack

Reset all of the units to the factory defaults and build the stack as described above in “Normal (Self-Ordering) Stack”. Then, when the stack is operational, assign each unit with its desired number, making sure no duplicates exist, and reset the stack.

Adding Units to a Running Stack

Normal (Self-Ordering) Stack

The easiest way to build a stack is to have the switches’ automatically determine their order in the stack.

24/48-Port 10/100 + 4-Port Gigabit Smart Switch with Resilient Clustering Technology and PoE

Restore the factory defaults to each of the units to be added to the stack. Then, connect the units physically to the stack and turn the units on. After a short while they will become stack members, but will have auto-assigned Unit IDs. Assign each such unit its desired Unit ID (using

Appendix B

About Switch Stacking

the Console port, Telnet or Web-based Utility) and reset the units to make this assignment permanent.

The unit that is assigned number 1 will act as the Master; this is indicated by the Stack Master LED on its front panel being lit amber. The unit that is assigned number 2 will act as the Backup Master.

Stack Resiliency

A stack’s topology may be either Ring or Chain. The best practice is to configure the stack in Ring topology, due to its higher resiliency in case of unit failure or stacking link failure.

Additionally, if a redundant power supply is used, it is recommended to make sure that the Master and Backup Master units are connected to the redundant power supply.

Advanced Stacking

In order to understand the operation of the stack it is necessary to understand two key concepts:

Unit IDs, and how they are allocated

•

Stack unit start up process

•

Unit IDs

Each unit in a stack has an assigned unique Unit ID number. Unit ID numbers are meaningful as follows:

The unit that is assigned Unit ID=1 will serve as the

•

Stack Master. All other units will be stack members.

The stack Master provides a single point of control, configuration and management for the entire stack, and stores the configuration for all stack members (which themselves do not store any configuration information at all).

The unit that is assigned Unit ID=2 is a special stack

•

member, which serves as the Stack Backup Master.

A stack Backup Master, in addition to being a stack member, serves as a Backup in case the stack Master fails or is disconnected for any reason. If that should happen, the Backup Master takes over the role of stack Master for the remaining stack members.

To make this possible, the stack Master will store a copy of the active configuration on the Backup Master, but this copy will only be used if and when it takes over the role of stack Master. Note that only the configuration file is copied. Any dynamically filled tables, e.g. addresses learned, are not copied from the Master to the Backup Master. If the Backup Master takes over the role of stack Master, it will start building its own dynamic tables from scratch.

Units that are assigned Unit IDs 3-6 (SLM224G4PS)

•

or Unit IDs 3-4 (SLM248G4PS) are called Stack Members.

A stack member will only operate as a member of the stack under the direction of an operational stack Master (or a Backup Master that has taken over the role).

Stack members are not directly manageable and configurable, and must be managed through the stack Master, and do not contain any meaningful configuration information (not even their own configuration). If an operational master is not present and reachable, these units will not be functional.

Master Enabled units

•

Units that are assigned a unit ID number of 1 or 2 are called master enabled units. Only master enabled units participate in master election (see below) whenever they are initiated, inserted into a new stack or lose connectivity with the existing master. Only master enabled units can become the stack master or backup master. Units with assigned IDs of 3-6 (SLM224G4PS) or 3-4 (SLM248G4PS) can become neither a master nor a backup master unless this is done manually by the system administrator or they are reset to the factory default first.

Unit ID Allocation

Units are shipped from the factory with no Unit ID, and must be assigned a unique Unit ID before they can operate as part of a stack. Unit ID numbers are assigned to units in one of two ways:

Assigned by the system administrator, in which case

•

they can only be changed manually by the system administrator

Allocated to a stack member unit by the stack Master

•

during system initialization

In general, a unit that was assigned a Unit ID will tend to keep this number even after it is rebooted. The stack Master may reallocate Unit IDs during system initialization to resolve duplicate Unit ID conflicts (see below). Manually assigned Unit IDs cannot be changed by the stack Master, even if they are in conflict.

Unit ID assignment/change takes effect only during system initialization and does not take place during runtime of the system.

Units of a stack do not have to be numbered in sequence or in order, and may be interconnected as desired, as long as each unit has a unique ID and at least one unit of the stack serves as stack Master.

24/48-Port 10/100 + 4-Port Gigabit Smart Switch with Resilient Clustering Technology and PoE

Appendix B

About Switch Stacking

Stack Units Startup Process

Whenever a unit in stack mode is initialized (powered up or rebooted) it goes through the same exact process, consisting of the following three steps:

Master Discovery/Election.

Unit ID allocation by the Master (including duplicate

2. Unit ID conflict resolution)

Unit/port configuration by the Master

Master Discovery

Whenever a unit in stack mode initializes, its behavior will depend on its Unit ID (if any).

If the unit does not have a current Unit ID (that is, the

•

unit is in factory default mode).

If there is a master, the unit performs Unit ID Allocation (refer to section “Unit ID Allocation and Duplicate Unit ID Conflict Resolution”), where it will get a number from the master. If there is no master, then it will participate in Master-election, and may even end up as the new master or backup master.

If the unit’s current Unit ID is 1 or 2 (previously allocated,

•

perhaps even in a different stack), then the unit will participate in the Master election.

If the unit has a current Unit ID (previously allocated,

•

perhaps even in a different stack), it will try to use this number in the new stack. If the unit’s current Unit ID is 3-6 (3-4 for SLM248G4PS), then it will try and connect to the running stack Master, and will not proceed to the next stage until contact with the Master is made. In particular, such units will NOT participate in the Master election process, and if no Master is present, the units will be effectively shut down.

Both the master and all other stack units carry out a continuous process of master discovery by frequently exchanging stack control messages. This allows them to discover whenever a unit fails or becomes unreachable.

Master Election

Whenever a unit (or more than one) in stack mode comes up, one of the units is elected to be the stack Master. The unit selected as Stack Master is chosen as follows:

If a unit in the stack was set to “Force Master” by the

1. system administrator, that unit will be the stack Master. Only master enabled stack units, i.e. unit ID=1 or unit ID=2 can be selected as “Force Master”.

Otherwise, if the stack contains units whose unique

2. Unit ID is either 1 or 2, then one of these two units will be the stack Master. It does not matter if the Unit

ID was originally assigned automatically or manually. (Such units are called Master-enabled units).

If there is only one such unit, it will be selected as

•

the stack Master (even if its Unit ID=2).

If there are two such units, the two units will decide

•

which of them is the Master by checking:

Which one has been running for a longer time

•

(in increments of 10 minutes). The unit running for a longer time will be the stack Master.

If they have been running for the same amount

•

of time, Unit ID=1 will be the stack Master.

If both units have been running for the same

•

amount of time and both units have the same Unit ID, the unit with a lower MAC address will be selected as stack Master.

Otherwise, if the stack contains one or more units

3. without a current Unit ID (that is to say in factory default state), then the stack Master will be one of these units. The unit selected to be the Master will be the one running for the longest time (in increments of 10 minutes) or, if all units are running for the same amount of time, the one with the lowest MAC address.

The end result of Master Election is that the stack has a stack Master. The Stack master has unit ID=1 and the Backup Master, if it exists, unit ID=2. Alternatively, the Stack master has unit ID=2 and the Backup Master, if it exists, unit ID=1.

If a Master-enabled (Unit ID=1 or 2) unit is added to a stack and turned on, then when it comes up, it will invoke master-election, even though the rest of the stack already has an elected master. Because it is new, it will lose the election and join as a member or backup master.

Unit ID Allocation and Duplicate Unit ID Conflict Resolution

Once a stack Master is elected, it will allocate Unit IDs to units that do not have a currently assigned Unit ID (that is, units in factory default mode).

In addition, the stack Master will try to resolve all cases of units with duplicate Unit IDs. This is done by changing the Unit IDs of offending units that have a duplicate current Unit ID, provided that there are available, unused Unit IDs.

In the case of a merged stack scenario, units that were initially in the sub-group of the Master that remained as Master will have the same unit IDs as they had before. Members of the other sub-group will be renumbered.

If the conflict occurs after the units reboot then the following will take place:

24/48-Port 10/100 + 4-Port Gigabit Smart Switch with Resilient Clustering Technology and PoE

Appendix B

About Switch Stacking

If both duplicate units are in auto (self ordering) mode,

•

then the unit ID will be decided by the Mac address. The unit with the lower Mac will keep its unit ID. The other will be reassigned a new unit ID.

If one of the duplicates is in auto (self ordering)

•

mode and the other unit is in manual mode then the manual mode unit will keep its ID and the other will be reassigned a new unit ID.

If both duplicate units are in manual mode then both

•

of them will be shut down.

If the stack Master is able to allocate a unique Unit ID to each unit, then all units can operate as a stack. If the stack Master is unable to allocate a Unit ID to any unit, that unit is effectively shut down and will not participate in the stack.

In particular, units with a conflicting manually set Unit ID number will be shut down because the Master cannot override the system administrator’s assignment to resolve the conflict.

If there are more units than the maximum number allowed in a stack and the incoming units are already in factory default state (which means they do not have unit ID assigned) then a Master will be elected following Master Discovery and Master Election processes. All other units will remain shut down. Please note that in some extreme cases, due to a race condition during the boot process, some of the units might be connected and join the stack.. If the incoming units already have a unit ID then none of them will join the stack and all will be left in shutdown mode (since there is no way to know which of them are preferable).

NOTE: If a unit is shut down, its stacking

links will be inactive. Moreover, if the stacking units are connected in a chain topology, the shutdown of one unit breaks the chain and may cause other units to be shut down if they have no active link to the Master unit.

the stack Master and will be copied to the Backup Master (if it exists).

User Controls

Using either the CLI or the graphical user interface (GUI), the user can configure the following settings:

Set the operational mode of the unit (which will take

•

effect after next reboot) – Standalone or Stack.

Force a unit to be the stack Master after the next reset

•

Assign a static Unit ID, or, allow the unit to be

•

renumbered.

Stacking Examples

Replacing a Failed Stack Member in a Running Stack

In this example, a non-master unit fails in a running stack. When notified of the failure, a system administrator removes the failed unit and replaces it with another one.

When the unit fails, the stack Master detects (via the ongoing Master Discovery process) that the unit no longer responds, and directs all other stack members to route unit-to-unit traffic around the failed unit using the ring topology of the stacking connections. At the same time the stack Master notifies the system administrator (using SYSLOG messages and SNMP traps) of the failure.

When the failed unit is disconnected from the stack, all traffic will already be routed around it, and as long as all other stacking connections are left intact, the stack should continue to run.

When a new unit is inserted in the stack and powered up, the following will happen:

The incoming unit, being in stack mode, will perform

Master discovery, and perhaps participate in a Master Election, as described above for any stacking-mode

unit powering up.

If the incoming unit has a Unit ID of 1 or 2, i.e. it

Unit and Port Configuration

At this point, each unit in the stack has a unique Unit-ID; one of the units is the stack Master, and, possibly, one of the units serves as Backup Master. The stack Master will now configure each of the member units and its ports according to the configuration file present on the Master.

If the stack has a Backup Master the configuration file will also be copied to the Backup Master.

Once all the units and ports are configured, the stack will go into normal operational mode. If any change is made to the system configuration, the change will be stored by

24/48-Port 10/100 + 4-Port Gigabit Smart Switch with Resilient Clustering Technology and PoE

•

is a master enabled unit, it will initiate a Master Election. However, since the running stack Master has a longer run time, it will remain elected as the stack Master and the incoming unit will not become a new stack Master.

If the incoming unit has a Unit ID of 3 to 6 (3 to 4 for

•

SLM248G4PS), it will try to become a member unit of the stack subject to the already running stack Master, and Master Election will not take place.

The stack Master at this stage will carry out a Unit ID

allocation and conflict resolution process.

Appendix B

If the incoming unit did not have an assigned Unit

•

ID (that is, it was in factory default mode), it will be assigned the lowest available Unit ID by the Master. It is strongly recommended that automatic assigned unit ID mode be used since it provides better resiliency to the stack.

If the incoming unit already has an assigned Unit ID,

•

and that Unit ID is unused in the current stack, the incoming unit will keep its assigned Unit ID and the Master will apply to it any configuration relevant to that Unit ID.

If the incoming unit already has an assigned Unit

•

ID, and that Unit ID conflicts with a unit ID in the current stack, the Master will reallocate a new Unit ID to the incoming unit, giving it the lowest available Unit ID (assuming, of course, that the incoming unit does not have a manually assigned Unit ID, which the Master cannot change).

If the incoming unit cannot be assigned an

•

available Unit ID for any reason (in the case of unit replacement that can only happen if the incoming unit has a manually assigned Unit ID), then it will be effectively shut down—that is, it will not be joined to the stack.

The stack Master will now carry out Unit and port

3. configuration for the incoming unit.

Any configuration information the Master has that

•

is relevant to the number assigned to the incoming unit will be applied. In particular, if the incoming unit was assigned the same Unit ID of the unit it replaces, then it will receive the same configuration as the failed unit, to the extent possible.

If the incoming unit is identical in makeup to the replaced unit, the entire configuration of the replaced unit will be applied to the incoming one and the stack will go back to the state it was in before unit failure. However, sometimes the incoming unit is not identical to the unit that failed in these cases. The stack Master will apply the configuration in the following manner:

If a 24-port unit replaces a failed 48-port unit,

•

then the ports of the incoming unit will be configured according to the way the first 24 ports of the failed unit were configured.

(Note that the configuration of all 48 ports of the failed unit is remembered, even though only the first 24 are currently applied. If, in the future, a 48 port unit is inserted and assigned the same Unit ID, it will be configured as the original failed 48port unit was configured).

If a 48-port unit replaces a 24-port unit, then

•

the first 24 ports of the incoming unit will be

About Switch Stacking

configured according to the way the ports of the failed unit were configured, and the rest of the ports of the incoming unit will be configured at default settings.

If the units (the failed one and its replacement)

•

had/have uplink ports, then the first uplink of the incoming unit will be configured as was the first uplink of the failed unit, and so on.

Stack Master Failure and Replacement

In this example, the master unit fails in a running stack. When notified of the failure, a system administrator removes the failed unit and replaces it with another one.

When the unit fails, the stack Backup Master detects (via the ongoing monitoring Master Discovery process) that the master unit no longer responds and takes over as the stack master. The backup master directs all other stack members to route unit-to-unit traffic around the failed unit using the ring topology of the stacking connections. At the same time the stack Backup Master notifies the system administrator (using SYSLOG messages and SNMP traps) of the failure.

When the failed unit is disconnected from the stack, all traffic will already be routed around it, and as long as all other stacking connections are left intact, the stack should continue to run.

When a new unit is inserted in the stack and powered up, the following will happen:

The incoming unit will perform Master discovery, and

1. perhaps participate in a Master Election, as described above.

If the incoming unit has a Unit ID of 1 or 2 (that

•

is, the unit is a master-enabled unit), then Master Election will be initiated. However, since the running stack Backup Master has a longer run time, assuming that it has been running for more then 10 minutes, it will remain elected as the stack Master and the incoming unit will not become a new stack Master. This may result in an incoming unit using Unit ID=1, and serving as the stack backup master, while the already running unit with Unit ID=2 remains the active stack master.

The stack Master at this stage will carry out a Unit ID

2. allocation and conflict resolution process.

If the incoming unit did not have an assigned Unit

•

24/48-Port 10/100 + 4-Port Gigabit Smart Switch with Resilient Clustering Technology and PoE

Appendix B

If the incoming unit already has an assigned Unit ID,

•

and that Unit ID is unused in the current stack, the incoming unit will keep its assigned Unit ID and the Master will apply to it any configuration relevant to that Unit ID.

If the incoming unit already has an assigned Unit

•

If the incoming unit cannot be assigned an

•

The stack Master will now carry out Unit and port

3. configuration for the incoming unit.

Any configuration information the Master has that

•

Splitting a Stack

In this example, let us assume that a working stack is split into two groups, either by failure of a stacking link connecting two units in the stack or by a failed unit in a chain topology which causes disconnection between two units in the stack. In this case we should consider each subgroup as an independent running stack configuration. For each subgroup three suboptions will be considered:

Both the Master unit and the Backup master unit are

•

part of the subgroup.

Either the Master unit or the Backup master unit are

•

part of the subgroup.

Neither the Master unit nor the Backup Master unit are

•

part of the subgroup.

The following describes what happens within each subgroup for each of these three suboptions.

Subgroup Contains Both Master Unit and Backup Master Unit

Nothing changes, except the master sees the missing

•

units as having been removed, and routes traffic around them, as described in section “Replacing a Failed Stack Member in a Running Stack” above.

24/48-Port 10/100 + 4-Port Gigabit Smart Switch with Resilient Clustering Technology and PoE

Since this subgroup contains both master and backup,

•

the subgroup works, and the other subgroup will not work. Refer to step 3 below for detailed information.

The sequence of actions is as follows:

•

The Master Discovery, Master Election and Unit ID

Allocation & Duplicate Unit ID Conflict Resolution processes will be executed.

Any configuration information that the Master

has that is relevant to the units remaining in the subgroup will remain unchanged.

Topology information (the information for each

unit on how to send traffic to any other unit in the stack) managed by the master will include only units that are reachable (connected) following the split.

The subgroup continues to work as before, except

that the number of the unit is lower than prior to the split.

No unit ID changes are made in either subgroup.

The Master notifies the system administrator (using

SYSLOG messages and SNMP traps) of the removed units and ports which belong to the unreachable units and will be reported as ‘not present’.

Subgroup Contains Either Master Unit or Backup Master Unit

If the Master unit remains in this subgroup,

•

this is the same as described in section “Replacing a Failed Stack Member in a Running Stack” above. If the Backup Master unit remains in this subgroup, then this is the same as section “Stack Master Failure and Replacement” above.

It should be emphasized that if the stack is split into

•

two parts, one with the master and one with the backup, both parts will work.

The sequence of actions is as follows:

•

The Master Discovery, Master Election and Unit ID

Allocation & Duplicate Unit ID Conflict Resolution processes will be executed.

If the subgroup contains the Master unit, the

stack Master notices (using the master detection process) that some units no longer respond. At the same time the stack Master notifies the system administrator (using SYSLOG messages and SNMP traps) of the removed units and ports which belong to the unreachable units and will be reported as ‘not present’.

If the subgroup contains the Backup Master unit,

the Backup Master will see as a case of Master failure and take over and manage the remaining units as a stack, while keeping its number as it was

About Switch Stacking

Appendix B

About Switch Stacking

before the split. Since the Backup Master was not acting as a master prior to the split, it will initiate a topology database and port-learning process. Traffic might be halted for a short period of time until synchronization (unit and port configuration) is completed. New units learned by the Backup Master will notify the system administrator (using SYSLOG messages and SNMP traps).

In either case (steps b and c above), the subgroup

will continue to work as it did before the split, except that the number of units is lower than prior to the split.

No unit ID changes are made in either subgroup.

Each new stack will have a Master (one has the

original Master, the other has the Backup). They thus operate as two separate stacks, both having the same configuration and hence the same IP address.

WARNING: Both resulting stacks will have the

same IP Address. This may lead to problems on the network, since there would be no way for users to connect to one of the stacks through its IP address.

Subgroup Contains Neither Master Unit nor Backup Master Unit

Please note that this is exactly the same as the case of a failed master, where no backup is available.

In this case the units with ID 3-6 (3-4 for SLM248G4PS)

•

in this subgroup will not renumber themselves, and will remain shut down until a stack Master enabled unit is connected, and starts to operate as stack master. It is the responsibility of the Master-discovery process to see that the master is gone.

In this subgroup, the units lose connection with the

•

Master. Since they started as a running stack and none of them are in factory default mode, renumbering will not take place, and even a Reset of the units will not affect unit ID assignment (As noted above, units can be renumbered only by a stack Master).

No unit ID changes are made in either subgroup.

•

Again it should be emphasized that none of the units in either half of the stack will renumber themselves.

Merging Two Stacks

In this example, the user would like to merge two working stacks and create one stack out of those two stacks. In this example one should distinguish between two scenarios:

The incoming units are turned off before insertion and

•

then powered back up afterward

The two stacks are kept running during the insertion

•

(for example, the stacking cables of the two stacks are connected)

Incoming Units Turned Off Before Insertion, then Turned On After Insertion

This is exactly the same as inserting units into a running stack (refer to “Replacing a Failed Stack Member in a Running Stack”). The only difference is that more than one unit will be inserted into the stack and therefore for each unit inserted to the stack the same process will be executed.

Both Stacks Kept Running During Insertion

If each of the joined stacks has a Master unit, both Master units will perform Master discovery and participate in a Master Election, as described above. One of the Master units will be selected as the Master unit—for the merged stack. The criteria for choosing the master are:

Force Master

•

System Up Time

•

Lowest Unit ID

•

Lowest MAC

•

The process of master selection between the two master units is as follows:

If force master is enabled then the unit which is forced

•

is chosen.

Up time is measured by quantities of periods of 10

•

minutes. If the number of 10 minute periods is higher for one of the units then this unit is chosen.

If both units have the same up time (measured in

•

periods of 10 minutes) the unit with the lowest unit ID is elected.

If both Master unit IDs are equal the unit with the

•

Lower MAC is chosen.

The Master unit that loses its “mastership” in the Master

•

election process will be renumbered if the unit ID was dynamically allocated. renumbering will now allocate it a new number by the new Master, as a stack member, or possibly Backup Master. It should be emphasized that in no case will there be two units with the same Unit ID at the end of this process.

The Master unit that loses its mastership in the Master

•

election process will be shut down if the unit ID was manually allocated. It is recommended that the administrator configure it to auto-assigned Unit ID before reconnecting it to the stack.

24/48-Port 10/100 + 4-Port Gigabit Smart Switch with Resilient Clustering Technology and PoE

Appendix B

About Switch Stacking

It should be emphasized that when two stacks are combined, all of the configuration information for one of the stacks will be lost. Only the surviving master (after the discovery/election process completes) will maintain its configuration information.

The best practice to combine two stacks is to reset the switches in one stack to the factory defaults and then add the switches as described in the “Adding Units to a Running Stack” subsection of section “Normal (SelfOrdering) Stack).”

If one of the merged stacks had neither a Master unit

•

nor a Backup Master unit, then units belonging to this group will be inserted into the stack in the exact way as described in section “Replacing a Failed Stack Member in a Running Stack” above. The Master will either connect the running units to the stack using the current numbers or will renumber them as necessary. The process described in section ““Replacing a Failed Stack Member in a Running Stack” applies to this case as well.

It should be emphasized that any time two stacks are combined into one stack, there is no way to maintain the configuration for both sets of switches. All dynamic information of the units that belong to the portion of the stack that was not reelected to be the master will be relearned.

A running group of units is added to an existing stack,

2. assuming each one of the stack groups has an elected Master. The total of existing units and inserted units would exceed the maximum allowed number of units in a stack, which is 6 units for SLM224G4PS, or 4 units for SLM248G4PS:

Master Detection and Master Election processes

•

would determine the master out of one of two combined stacking groups.

When switches are added to a running stack,

•

the Unit ID Allocation and Duplicate ID Conflict Resolution process will detect an error if too many switches are present in the stack, and no changes will be made to units that originally belonged to the group managed by the newly elected master. The original switches will retain their ID assignments and configurations. The units that originally belonged to the group managed by the master that lost its master status will be shut down.

Standalone Unit Inserted into a Running Stack

Since the unit is in standalone mode it will not participate in a master discovery process (it will not look for a master and will not respond to master queries). As a result it will not join the stack but will continue to run as a standalone manageable unit.

Stacking Cable Failure

In this example, let us assume that stacking connection cables failed and caused a stack split, as described in section “Splitting a Stack.” When the stacking cable connection is fixed and units are reconnected, it results in merging two stacks as described in section “Merging Two Stacks.”

This scenario is feasible only if the topology of the stack is Chain topology. Single stacking cable failure will not cause a stack split if a Ring topology is used.

Inserting Too Many Units

In this example, a user tries to insert too many units into a stack.

All units (existing and newly inserted) are powered on

1. at the same time:

A Master is elected following the Master Discovery

•

and Master Election processes.

All other units will shut down.

•

NOTE: In some extreme cases, due to a race

condition during the boot process, some of the units might be connected and join the stack.

The ports that are connected to the other units’ stacking links will not pass any traffic, and the master will consider them as failed stacking links and route all traffic around them.

24/48-Port 10/100 + 4-Port Gigabit Smart Switch with Resilient Clustering Technology and PoE

Appendix C

Glossary

Appendix C: Glossary

This glossary contains some basic networking terms you may come across when using this product.

WEB: For additional terms, please visit the

glossary at www.linksys.com/glossary

Access Mode

is granted to the system.

Access Point A device that allows wireless-equipped computers and other devices to communicate with a wired network. Also used to expand the range of a wireless network.

Access Profiles Allows network managers to define profiles and rules for accessing the device. Access to management functions can be limited to user groups, which are defined by the following criteria:

Ingress interfaces

•

Source IP address and/or Source IP subnets.

•

ACE Filters in Access Control Lists (ACL) that determine which network traffic is forwarded. An ACE is based on the following criteria:

Protocol

•

Protocol ID

•

Source Port

•

Destination Port

•

Wildcard Mask

•

Source IP Address

•

Destination IP Address

•

ACL (Access Control List) Access Control Lists are used to grant, deny, or limit access devices, features, or applications.

Auto-negotiation Allows 10/100 Mbps or 10/100/1000 Mbps Ethernet ports to automatically establish the optimal duplex mode, flow control, and speed.

Back Pressure A mechanism used with Half Duplex mode that enables a port not to receive a message.

Bandwidth The transmission capacity of a given device or network.

Bandwidth Assignments Indicates the amount of bandwidth assigned to a specific application, user, and/or interface.

Specifies the method by which user access

Baud Indicates the number of signaling elements transmitted each second.

Best Effort Indicates that traffic is assigned to the lowest priority queue, and packet delivery is not guaranteed.

Bit A binary digit.

Boot To start a device and cause it to start executing

instructions.

Browser An application program that provides a way to look at and interact with all the information on the World Wide Web.

Bridge A device that connect two networks. Bridges are hardware specific, however they are protocol independent. Bridges operate at Layer 1 and Layer 2 levels.

Broadcast Domain Devices sets that receive broadcast frames originating from any device within a designated set. Routers bind Broadcast domains, because routers do not forward broadcast frames.

Broadcast Storm An excessive amount of broadcast messages simultaneously transmitted across a network by a single port. Forwarded message responses are heaped onto the network, overloading network resources or causing the network to time out.

Burst A packet transmission at faster than normal rates. Bursts are limited in time and only occur under specific conditions.

Burst Size Indicates the burst size transmitted at a faster than normal rate.

Byte A unit of data that is usually eight bits long

Cable Modem A device that connects a computer to the

cable television network, which in turn connects to the Internet.

CBS (Committed Burst Size) Indicates the maximum number of data bits transmitted within a specific time interval.

CIR (Committed Information Rate) The data rate is averaged over a minimum time increment.

Class Maps An aspect of Quality of Service system that is comprised of an IP ACL and/or a MAC ACL. Class maps are configured to match packet criteria, and are matched to packets in a first-fit fashion.

Combo Ports A single logical port with two physical connections, including an RJ-45 connection and a SFP connection.

Communities Specifies a group of users which retain the same system access rights.

24/48-Port 10/100 + 4-Port Gigabit Smart Switch with Resilient Clustering Technology and PoE

Appendix C

Glossary

CoS (Class of Service) The 802.1p priority scheme. CoS provides a method for tagging packets with priority information. A CoS value between 0-7 is added to the Layer II header of packets, where zero is the lowest priority and seven is the highest.

DDNS (Dynamic Domain Name System) Allows the hosting of a website, FTP server, or e-mail server with a fixed domain name (e.g., www.xyz.com) and a dynamic IP address.

Default Gateway A device that forwards Internet traffic from your local area network.

DHCP (Dynamic Host Configuration Protocol) A networking protocol that allows administrators to assign temporary IP addresses to network computers by “leasing” an IP address to a user for a limited amount of time, instead of assigning permanent IP addresses.

DHCP Clients An Internet host using DHCP to obtain configuration parameters, such as a network address.

DHCP Server An Internet host that returns configuration parameters to DHCP clients.

DNS (Domain Name Server) The IP address of your ISP’s server, which translates the names of websites into IP addresses.

Domain A specific name for a network of computers.

Download To receive a file transmitted over a network.

DSL (Digital Subscriber Line) An always-on broadband

connection over traditional phone lines.

DSCP (DiffServ Code Point) Provides a method of tagging IP packets with QoS priority information.

Dynamic IP Address A temporary IP address assigned by a DHCP server.

EIGRP (Enhanced Interior Gateway Routing Protocol) Provides fast convergence, support for variable-

length subnet mask, and supports multiple network layer protocols.

Encryption Encoding data transmitted in a network.

Ethernet IEEE standard network protocol that specifies

how data is placed on and retrieved from a common transmission medium.

Firmware The programming code that runs a networking device.

Flow Control Enables lower speed devices to communicate with higher speed devices. This is implemented by the higher speed device refraining from sending packets.

Full Duplex The ability of a networking device to receive and transmit data simultaneously.

GARP (General Attributes Registration Protocol) Registers client stations into a multicast

domain.

Gateway A device that interconnects networks with different, incompatible communications protocols.

GBIC (GigaBit Interface Converter) A hardware module used to attach network devices to fiber-based transmission systems. GBIC converts the serial electrical signals to serial optical signals and vice versa.

GVRP (GARP VLAN Registration Protocol) Registers client stations into a VLANs.

Half Duplex Data transmission that can occur in two directions over a single line, but only one direction at a time.

HTTP (HyperText Transport Protocol) The communications protocol used to connect to servers on the World Wide Web.

HTTPS (HyperText Transport Protocol Secure) An extension to the standard HTTP protocol that provides confidentiality by encrypting the traffic from the website. By default this protocol uses TCP port 443.

ICMP (Internet Control Message Protocol) Allows the gateway or destination host to communicate with the source host. For example, to report a processing error.

IGMP (Internet Group Management Protocol) Allows hosts to notify their local switch or router that they want to receive transmissions assigned to a specific multicast group.

IP (Internet Protocol) A protocol used to send data over a network.

IP Address The address used to identify a computer or device on a network.

IPCONFIG A Windows 2000 and XP utility that displays the IP address for a particular networking device.

IPSec (Internet Protocol Security) A VPN protocol used to implement secure exchange of packets at the IP layer.

ISP (Internet Service Provider) A company that provides access to the Internet.

Jumbo Frames Enable transporting identical data in fewer frames. Jumbo Frames reduce overhead, lower processing time, and ensure fewer interrupts.

LAG (Link Aggregated Group) Aggregates ports or VLANs into a single virtual port or VLAN.

FTP (File Transfer Protocol) A protocol used to transfer files over a TCP/IP network.

24/48-Port 10/100 + 4-Port Gigabit Smart Switch with Resilient Clustering Technology and PoE

LAN The computers and networking products that make

up your local network.

Appendix C

Glossary

MAC (Media Access Control) Address The unique address that a manufacturer assigns to each networking device.

Mask A filter that includes or excludes certain values, for example parts of an IP address.

Mbps (MegaBits Per Second) One million bits per second; a unit of measurement for data transmission.

MD5 (Message Digest 5) An algorithm that produces a 128-bit hash. MD5 is a variation of MD4, and increases MD4 security. MD5 verifies the integrity of the communication and authenticates the origin of the communication.

MDI (Media Dependent Interface) A cable used for end stations.

MDIX (Media Dependent Interface with Crossover) A cable used for hubs and switches.

MIB (Management Information Base) MIBs contain information describing specific aspects of network components.

Multicast Transmits copies of a single packet to multiple ports.

Network A series of computers or devices connected for the purpose of data sharing, storage, and/or transmission between users.

NMS (Network Management System) An interface that provides a method of managing a system.

OID (Object Identifier) Used by SNMP to identify managed objects. In the SNMP Manager/Agent network management paradigm, each managed object must have an OID to identify it.

Packet A unit of data sent over a network.

Ping (Packet INternet Groper) An Internet utility used

to determine whether a particular IP address is online.

Policing Determines if traffic levels are within a specified profile. Policing manages the maximum traffic rate used to send or receive packets on an interface.

Port The connection point on a computer or networking device used for plugging in cables or adapters.

Port Mirroring Monitors and mirrors network traffic by forwarding copies of incoming and outgoing packets from one port to a monitoring port.

Power over Ethernet (PoE) A technology enabling an Ethernet network cable to deliver both data and power.

QoS (Quality of Service) Provides policies that contain sets of filters (rules). QoS allows network managers to decide how and what network traffic is forwarded according to priorities, application types, and source and destination addresses.

RADIUS (Remote Authentication Dial-In User Service) A protocol that uses an authentication server to

control network access.

RJ-45 (Registered Jack-45) An Ethernet connector that holds up to eight wires.

RMON (Remote Monitoring) Provides network information to be collected from a single workstation.

Router A networking device that connects multiple networks together.

RSTP (Rapid Spanning Tree Protocol) Detects and uses network topologies that allow a faster convergence of the spanning tree, without creating forwarding loops.

Server Any computer whose function in a network is to provide user access to files, printing, communications, and other services.

SMTP (Simple Mail Transfer Protocol) The standard email protocol on the Internet.

SNMP (Simple Network Management Protocol) A widely used network monitoring and control protocol.

Static IP Address A fixed address assigned to a computer or device that is connected to a network.

STP (Spanning Tree Protocol) Prevents loops in network traffic. The Spanning Tree Protocol (STP) provides tree topography for any arrangement of bridges. STP provides one path between end stations on a network, eliminating loops.

Subnet (Sub-network) Subnets are portions of a network that share a common address component. In TCP/IP networks, devices that share a prefix are part of the same subnet. For example, all devices with a prefix of

157.100.100.100 are part of the same subnet.

Subnet Mask An address code that determines the size of the network.

Switch Filters and forwards packets between LAN segments. Switches support any packet protocol type.

TACACS+ (Terminal Access Controller Access Control System Plus) Proprietary Cisco enhancement to Terminal

Access Controller Access Control System (TACACS). Provides additional support for authentication, authorization, and accounting.

TCP (Transmission Control Protocol) A network protocol for transmitting data that requires acknowledgement from the recipient of data sent.

TCP/IP (Transmission Control Protocol/Internet Protocol) A set of instructions PCs use to communicate

over a network.

Telnet A user command and TCP/IP protocol used for accessing remote PCs.

24/48-Port 10/100 + 4-Port Gigabit Smart Switch with Resilient Clustering Technology and PoE

Appendix C

TFTP (Trivial File Transfer Protocol) A version of the

TCP/IP FTP protocol that has no directory or password capability.

Throughput The amount of data moved successfully from one node to another in a given time period.

Trunking Link Aggregation. Optimizes port usage by linking a group of ports together to form a single trunk (aggregated groups).

TX Rate Transmission Rate.

UDP (User Data Protocol) Communication protocol that

transmits packets but does not guarantee their delivery.

Upgrade To replace existing software or firmware with a newer version.

Upload To transmit a file over a network.

URL (Uniform Resource Locator) The address of a file

located on the Internet.

Glossary

VLAN (Virtual Local Area Networks) Logical subgroups that constitute a Local Area Network (LAN). This is done in software rather than defining a hardware solution.

WAN (Wide Area Network) Networks that cover a large geographical area.

Wildcard Mask Specifies which IP address bits are used, and which bits are ignored. A wild card mask of 255.255.255.255 indicates that no bit is important. A wildcard of 0.0.0.0 indicates that all the bits are important.

For example, if the destination IP address is 149.36.184.198 and the wildcard mask is 255.36.184.00, the first two bits of the IP address are used, while the last two bits are ignored.

24/48-Port 10/100 + 4-Port Gigabit Smart Switch with Resilient Clustering Technology and PoE

Appendix D

Appendix D: Specifications

Specifications

Specications

Model SLM224G4PS or SLM248G4PS Ports SLM224G4PS:

10BASE-T, 100BASE-TX, and 1000BASE-T with 4 Gigabit ports and 2 Combo SFP slots

Buttons None Cabling Type

10BASE-T/100BASE-TX, UTP CAT 5e or better for 1000BASE-T

LEDs Power, Link/Act, Speed

24 RJ-45 connectors for

SLM248G4PS: 48 RJ-45 connectors for

UTP CAT 5 or better for

Performance

Switching Capacity SLM224G4PS:

12.8 Gbps non-blocking

SLM248G4PS:

17.6 Gbps non-blocking

MAC Table Size 8K Number of VLANs 128

Stacking

Stacking Operation Maximum stack size: 192 Ports Max. no. of units in stack: 6

(SLM224G4PS + SLM248G4PS) Hot insertion and removal Ring and Chain stacking options Master and Backup Master for

resilient stack control Auto-numbering or manual

conguration of units in stack

Management

Web User Interface Built-in Web UI for easy browser based conguration (HTTP)

SNMP SNMP versions 1, 2c, 3 SNMP MIBs RFC1213 MIB-2, RFC2863 Interface

MIB, RFC2665 Ether-like MIB, RFC1493 Bridge MIB, RFC2674 Extended Bridge MIB (P-bridge, Q-bridge), RFC2819 RMON MIB

(groups 1,2,3,9 only), RFC2737 Entity MIB, RFC 2618 RADIUS Client MIB

RMON Embedded Remote Monitoring (RMON) software agent supports four RMON groups (history, statistics, alarms, and events) for enhanced trac management, monitoring, and analysis

Firmware Upgrade Web Browser upgrade (HTTP) and TFTP upgrade

Port Mirroring Trac on a port can be mirrored to another port for analysis with a network analyzer or RMON probe

Other Management Switch Audit Log DHCP Client BootP SNTP Xmodem upgrade Cable Diagnostics Port Mirroring PING

Security Features

IEEE 802.1x 802.1X Authentication: RADIUS; EAP-TTLS, PEAP, EAP-MD5, LEAP, EAP-TLS

Access Control ToS/DSCP

Availability

Link Aggregation Link Aggregation using IEEE 802.3ad LACP

Storm Control Broadcast and Multicast Spanning Tree IEEE 802.1D Spanning Tree,

Fast Linkover IGMP Snooping

for fast client joins and leaves of multicast streams and limits bandwidth-intensive video trac to only the requestors.

Up to 8 ports in up to 8 trunks

IGMP (v1/v2) Snooping provides

QoS

Priority levels 4 Hardware queues Scheduling Priority Queueing and

Weighted Round Robin (WRR)

24/48-Port 10/100 + 4-Port Gigabit Smart Switch with Resilient Clustering Technology and PoE

Appendix D

Class of Service Port-based

802.1p VLAN priority-based

IPv4 IP precedence/ToS/DSCP

Layer 2

VLAN Management VLAN

HOL Blocking Head of line blocking prevention Jumbo frame Supports frame size up to 9K

bytes

Standards

802.3u 100BASE-TX Fast Ethernet,

802.3z Gigabit Ethernet,

802.3x Flow Control

Power over Ethernet (PoE)

PoE Ports SLM224G4PS: Ports 1-6 and 13-18

Each 10/100 PoE port supplies up to a maximum of 100 Watts total power in compliance with IEEE

802.3af

SLM248G4PS: Ports 1-12 and 25-36

Each 10/100 PoE port supplies up to a maximum of 180 Watts total power in compliance with IEEE

802.3af

Port-based and 802.1q-based VLANs

802.3 10BASE-T Ethernet,

802.3ab 1000BASE-T Gigabit Ethernet

Specifications

Environmental

Dimensions SLM224G4PS:

16.93" x 1.75" x 8.00”

(430 x 44.45 x 203.3 mm) SLM248G4PS:

17.32" x 1.75" x 13.81”

(440 x 44.45 x 350.8 mm) Unit Weight SLM224G4PS: 5.29 lb (2.4 kg)

SLM248G4PS: 9.59 lb (4.35 kg) Power 100-240V 0.5A Certication FCC Part15 Class A, CE Class A,

UL CSA (CSA22.2), CE mark, CB Operating Temp. 32 to 104ºF (0 to 40ºC) Storage Temp. -4 to 158ºF (-20 to 70ºC) Operating Humidity 20 to 95% Noncondensing Storage Humidity 5 to 90% Noncondensing

24/48-Port 10/100 + 4-Port Gigabit Smart Switch with Resilient Clustering Technology and PoE

Appendix E

Warranty Information

Appendix E: Warranty Information

Linksys warrants this Linksys hardware product against defects in materials and workmanship under normal use for the Warranty Period, which begins on the date of purchase by the original end-user purchaser and lasts for the period specified for this product at www.linksys.com/warranty. The internet URL address and the web pages referred to herein may be updated by Linksys from time to time; the version in effect at the date of purchase shall apply.

This limited warranty is non-transferable and extends only to the original end-user purchaser. Your exclusive remedy and Linksys’ entire liability under this limited warranty will be for Linksys, at its option, to (a) repair the product with new or refurbished parts, (b) replace the product with a reasonably available equivalent new or refurbished Linksys product, or (c) refund the purchase price of the product less any rebates. Any repaired or replacement products will be warranted for the remainder of the original Warranty Period or thirty (30) days, whichever is longer. All products and parts that are replaced become the property of Linksys.

Exclusions and Limitations

This limited warranty does not apply if: (a) the product assembly seal has been removed or damaged, (b) the product has been altered or modified, except by Linksys, (c) the product damage was caused by use with non-Linksys products, (d) the product has not been installed, operated, repaired, or maintained in accordance with instructions supplied by Linksys, (e) the product has been subjected to abnormal physical or electrical stress, misuse, negligence, or accident, (f) the serial number on the Product has been altered, defaced, or removed, or (g) the product is supplied or licensed for beta, evaluation, testing or demonstration purposes for which Linksys does not charge a purchase price or license fee.

ALL SOFTWARE PROVIDED BY LINKSYS WITH THE PRODUCT, WHETHER FACTORY LOADED ON THE PRODUCT OR CONTAINED ON MEDIA ACCOMPANYING THE PRODUCT, IS PROVIDED “AS IS” WITHOUT WARRANTY OF ANY KIND. Without limiting the foregoing, Linksys does not warrant that the operation of the product or software will be uninterrupted or error free. Also, due to the continual development of new techniques for intruding upon and attacking networks, Linksys does not warrant that the product, software or any equipment, system or network on which the product or software is used will be free of vulnerability to intrusion or attack. The product may include or be bundled with third party software or

service offerings. This limited warranty shall not apply to such third party software or service offerings. This limited warranty does not guarantee any continued availability of a third party’s service for which this product’s use or operation may require.

TO THE EXTENT NOT PROHIBITED BY LAW, ALL IMPLIED WARRANTIES AND CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY OR FITNESS FOR A PARTICULAR PURPOSE ARE LIMITED TO THE DURATION OF THE WARRANTY PERIOD. ALL OTHER EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, INCLUDING, BUT NOT LIMITED TO, ANY IMPLIED WARRANTY OF NON-INFRINGEMENT, ARE DISCLAIMED. Some jurisdictions do not allow limitations on how long an implied warranty lasts, so the above limitation may not apply to you. This limited warranty gives you specific legal rights, and you may also have other rights which vary by jurisdiction.

TO THE EXTENT NOT PROHIBITED BY LAW, IN NO EVENT WILL LINKSYS BE LIABLE FOR ANY LOST DATA, REVENUE OR PROFIT, OR FOR SPECIAL, INDIRECT, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, REGARDLESS OF THE THEORY OF LIABILITY (INCLUDING NEGLIGENCE), ARISING OUT OF OR RELATED TO THE USE OF OR INABILITY TO USE THE PRODUCT (INCLUDING ANY SOFTWARE), EVEN IF LINKSYS HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. IN NO EVENT WILL LINKSYS’ LIABILITY EXCEED THE AMOUNT PAID BY YOU FOR THE PRODUCT. The foregoing limitations will apply even if any warranty or remedy provided under this limited warranty fails of its essential purpose. Some jurisdictions do not allow the exclusion or limitation of incidental or consequential damages, so the above limitation or exclusion may not apply to you.

Obtaining Warranty Service

If you have a question about your product or experience a problem with it, please go to www.linksys.com/support where you will find a variety of online support tools and information to assist you with your product. If the product proves defective during the Warranty Period, contact the Value Added Reseller (VAR) from whom you purchased the product or Linksys Technical Support for instructions on how to obtain warranty service. The telephone number for Linksys Technical Support in your area can be found in the product User Guide and at www.linksys.com. Have your product serial number and proof of purchase on hand when calling. A DATED PROOF OF ORIGINAL PURCHASE IS REQUIRED TO PROCESS WARRANTY CLAIMS. If you are requested to return your product, you will be given a Return Materials Authorization (RMA) number. You are responsible for properly packaging and shipping your product to Linksys at your cost and risk. You must include the RMA number and a copy of your dated proof of

24/48-Port 10/100 + 4-Port Gigabit Smart Switch with Resilient Clustering Technology and PoE

Appendix E

original purchase when returning your product. Products received without a RMA number and dated proof of original purchase will be rejected. Do not include any other items with the product you are returning to Linksys. Defective product covered by this limited warranty will be repaired or replaced and returned to you without charge. Customers outside of the United States of America and Canada are responsible for all shipping and handling charges, custom duties, VAT and other associated taxes and charges. Repairs or replacements not covered under this limited warranty will be subject to charge at Linksys’ then-current rates.

Technical Support

This limited warranty is neither a service nor a support contract. Information about Linksys’ current technical support offerings and policies (including any fees for support services) can be found at: www.linksys.com/support.

Warranty Information

This limited warranty is governed by the laws of the jurisdiction in which the Product was purchased by you.

Please direct all inquiries to: Linksys, P.O. Box 18558, Irvine, CA 92623.

24/48-Port 10/100 + 4-Port Gigabit Smart Switch with Resilient Clustering Technology and PoE

Appendix F

Regulatory Information

Appendix F: Regulatory Information

FCC Statement

This equipment has been tested and complies with the specifications for a Class A digital device, pursuant to Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. These limits are designed to provide reasonable protection against harmful interference when equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications.

Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense.

Industry Canada Statement

This Class A digital apparatus complies with Canadian ICES-003.

Operation is subject to the following two conditions:

This device may not cause interference and

This device must accept any interference, including

2. interference that may cause undesired operation of the device.

Avis d’ Industrie Canada

Cet appareil numérique de la classe A est conforme à la norme NMB-003 d’ Industrie Canada.

Le fonctionnement est soumis aux conditions suivantes :

Ce périphérique ne doit pas causer d’interférences;

Ce périphérique doit accepter toutes les interférences

2. reçues, y compris celles qui risquent d’entraîner un fonctionnement indésirable.

WARNING: You are cautioned that changes or

modifications not expressly approved by the party responsible for compliance could void your authority to operate the equipment.

Safety Notices

Caution: To reduce the risk of fire, use only No.26 AWG

•

or larger telecommunication line cord.

Do not use this product near water, for example, in a

•

wet basement or near a swimming pool.

Avoid using this product during an electrical storm.

•

There may be a remote risk of electric shock from lightning.

WARNING: This product contains lead, known

to the State of California to cause cancer, and birth defects or other reproductive harm. Wash hands after handling.

24/48-Port 10/100 + 4-Port Gigabit Smart Switch with Resilient Clustering Technology and PoE

Appendix F

Regulatory Information

User Information for Consumer Products Covered by EU Directive 2002/96/EC on Waste Electric and Electronic Equipment (WEEE)

This document contains important information for users with regards to the proper disposal and recycling of Linksys products. Consumers are required to comply with this notice for all electronic products bearing the following symbol:

English - Environmental Information for Customers in the European Union

European Directive 2002/96/EC requires that the equipment bearing this symbol on the product and/or its packaging must not be disposed of with unsorted municipal waste. The symbol indicates that this product should be disposed of separately from regular household waste streams. It is your responsibility to dispose of this and other electric and electronic equipment via designated collection facilities appointed by the government or local authorities. Correct disposal and recycling will help prevent potential negative consequences to the environment and human health. For more detailed information about the disposal of your old equipment, please contact your local authorities, waste disposal service, or the shop where you purchased the product.

Български (Bulgarian) - Информация относно опазването на околната среда за потребители в Европейския съюз

Европейска директива 2002/96/EC изисква уредите, носещи този символ върху изделието и/или опаковката му, да не се изхвърля т с несортирани битови отпадъци. Символът обозначава, че изделието трябва да се изхвърля отделно от сметосъбирането на обикновените битови отпадъци. Ваша е отговорността този и другите електрически и електронни уреди да се изхвърлят в предварително определени от държавните или общински органи специализирани пунктове за събиране. Правилното изхвърляне и рециклиране ще спомогнат да се предотвратят евентуални вредни за околната среда и здравето на населението последствия. За по-подробна информация относно изхвърлянето на вашите стари уреди се обърнете към местните власти, службите за сметосъбиране или магазина, от който сте закупили уреда.

Ceština (Czech) - Informace o ochraně životního prostředí pro zákazníky v zemích Evropské unie

Evropská směrnice 2002/96/ES zakazuje, aby zařízení označené tímto symbolem na produktu anebo na obalu bylo likvidováno s netříděným komunálním odpadem. Tento symbol udává, že daný produkt musí být likvidován odděleně od běžného komunálního odpadu. Odpovídáte za likvidaci tohoto produktu a dalších elektrických a elektronických zařízení prostřednictvím určených sběrných míst stanovených vládou nebo místními úřady. Správná likvidace a recyklace pomáhá předcházet potenciálním negativním dopadům na životní prostředí a lidské zdraví. Podrobnější informace o likvidaci starého vybavení si laskavě vyžádejte od místních úřadů, podniku zabývajícího se likvidací komunálních odpadů nebo obchodu, kde jste produkt zakoupili.

Dansk (Danish) - Miljøinformation for kunder i EU

EU-direktiv 2002/96/EF kræver, at udstyr der bærer dette symbol

på produktet og/eller emballagen ikke må bortskaffes som usorteret kommunalt affald. Symbolet betyder, at dette produkt skal bortskaffes adskilt fra det almindelige husholdningsaffald. Det er dit ansvar at bortskaffe dette og andet elektrisk og elektronisk udstyr via bestemte indsamlingssteder udpeget af staten eller de lokale myndigheder. Korrekt bortskaffelse og genvinding vil hjælpe med til at undgå mulige skader for miljøet og menneskers sundhed. Kontakt venligst de lokale myndigheder, renovationstjenesten eller den butik, hvor du har købt produktet, angående mere detaljeret information om bortskaffelse af dit gamle udstyr.

Deutsch (German) - Umweltinformation für Kunden innerhalb der Europäischen Union

Die Europäische Richtlinie 2002/96/EC verlangt, dass technische Ausrüstung, die direkt am Gerät und/oder an der Verpackung mit diesem Symbol versehen ist , nicht zusammen mit unsortiertem Gemeindeabfall entsorgt werden darf. Das Symbol weist darauf hin, dass das Produkt von regulärem Haushaltmüll getrennt entsorgt werden sollte. Es liegt in Ihrer Verantwortung, dieses Gerät und andere elektrische und elektronische Geräte über die dafür zuständigen und von der Regierung oder örtlichen Behörden dazu bestimmten Sammelstellen zu entsorgen. Ordnungsgemäßes Entsorgen und Recyceln trägt dazu bei, potentielle negative Folgen für Umwelt und die menschliche Gesundheit zu vermeiden. Wenn Sie weitere Informationen zur Entsorgung Ihrer Altgeräte benötigen, wenden Sie sich bitte an die örtlichen Behörden oder städtischen Entsorgungsdienste oder an den Händler, bei dem Sie das Produkt erworben haben.

24/48-Port 10/100 + 4-Port Gigabit Smart Switch with Resilient Clustering Technology and PoE

Appendix F

Regulatory Information

Eesti (Estonian) - Keskkonnaalane informatsioon Euroopa Liidus asuvatele klientidele

Euroopa Liidu direktiivi 2002/96/EÜ nõuete kohaselt on seadmeid, millel on tootel või pakendil käesolev sümbol , keelatud kõrvaldada koos sorteerimata olmejäätmetega. See sümbol näitab, et toode tuleks kõrvaldada eraldi tavalistest olmejäätmevoogudest. Olete kohustatud kõrvaldama käesoleva ja ka muud elektri- ja elektroonikaseadmed riigi või kohalike ametiasutuste poolt ette nähtud kogumispunktide kaudu. Seadmete korrektne kõrvaldamine ja ringlussevõtt aitab vältida võimalikke negatiivseid tagajärgi keskkonnale ning inimeste tervisele. Vanade seadmete kõrvaldamise kohta täpsema informatsiooni saamiseks võtke palun ühendust kohalike ametiasutustega, jäätmekäitlusfirmaga või kauplusega, kust te toote ostsite.

Español (Spanish) - Información medioambiental para clientes de la Unión Europea

La Directiva 2002/96/CE de la UE exige que los equipos que lleven este símbolo en el propio aparato y/o en su embalaje no deben eliminarse junto con otros residuos urbanos no seleccionados. El símbolo indica que el producto en cuestión debe separarse de los residuos domésticos convencionales con vistas a su eliminación. Es responsabilidad suya desechar este y cualesquiera otros aparatos eléctricos y electrónicos a través de los puntos de recogida que ponen a su disposición el gobierno y las autoridades locales. Al desechar y reciclar correctamente estos aparatos estará contribuyendo a evitar posibles consecuencias negativas para el medio ambiente y la salud de las personas. Si desea obtener información más detallada sobre la eliminación segura de su aparato usado, consulte a las autoridades locales, al servicio de recogida y eliminación de residuos de su zona o pregunte en la tienda donde adquirió el producto.

ξλληνικά (Greek) - Στοιχεία περιβαλλοντικής προστασίας για πελάτες εντός της Ευρωπαϊκής Ένωσης

Η Κοινοτική Οδηγία 2002/96/EC απαιτεί ότι ο εξοπλισμός ο οποίος φέρει αυτό το σύμβολο στο προϊόν και/ή στη συσκευασία του δεν πρέπει να απορρίπτεται μαζί με τα μικτά κοινοτικά απορρίμματα. Το σύμβολο υποδεικνύει ότι αυτό το προϊόν θα πρέπει να απορρίπτεται ξεχωριστά από τα συνήθη οικιακά απορρίμματα. Είστε υπεύθυνος για την απόρριψη του παρόντος και άλλου ηλεκτρικού και ηλεκτρονικού εξοπλισμού μέσω των καθορισμένων εγκαταστάσεων συγκέντρωσης απορριμμάτων οι οποίες παρέχονται από το κράτος ή τις αρμόδιες τοπικές αρχές. Η σωστή απόρριψη και ανακύκλωση συμβάλλει στην πρόληψη πιθανών αρνητικών συνεπειών για το περιβάλλον και την υγεία. Για περισσότερες πληροφορίες σχετικά με την απόρριψη του παλιού σας εξοπλισμού, παρακαλώ επικοινωνήστε με τις τοπικές αρχές, τις υπηρεσίες απόρριψης ή το κατάστημα από το οποίο αγοράσατε το προϊόν.

Français (French) - Informations environnementales pour les clients de l’Union européenne

La directive européenne 2002/96/CE exige que l’équipement sur lequel est apposé ce symbole sur le produit et/ou son emballage ne soit pas jeté avec les autres ordures ménagères. Ce symbole indique que le produit doit être éliminé dans un circuit distinct de celui pour les déchets des ménages. Il est de votre responsabilité de jeter ce matériel ainsi que tout autre matériel électrique ou électronique par les moyens de collecte indiqués par le gouvernement et les pouvoirs publics des collectivités territoriales. L’élimination et le recyclage en bonne et due forme ont pour but de lutter contre l’impact néfaste potentiel de ce type de produits sur l’environnement et la santé publique. Pour plus d’informations sur le mode d’élimination de votre ancien équipement, veuillez prendre contact avec les pouvoirs publics locaux, le service de traitement des déchets, ou l’endroit où vous avez acheté le produit.

Italiano (Italian) - Informazioni relative all’ambiente per i clienti residenti nell’Unione Europea

La direttiva europea 2002/96/EC richiede che le apparecchiature contrassegnate con questo simbolo sul prodotto e/o sull’imballaggio non siano smaltite insieme ai rifiuti urbani non differenziati. Il simbolo indica che questo prodotto non deve essere smaltito insieme ai normali rifiuti domestici. È responsabilità del proprietario smaltire sia questi prodotti sia le altre apparecchiature elettriche ed elettroniche mediante le specifiche strutture di raccolta indicate dal governo o dagli enti pubblici locali. Il corretto smaltimento ed il riciclaggio aiuteranno a prevenire conseguenze potenzialmente negative per l’ambiente e per la salute dell’essere umano. Per ricevere informazioni più dettagliate circa lo smaltimento delle vecchie apparecchiature in Vostro possesso, Vi invitiamo a contattare gli enti pubblici di competenza, il servizio di smaltimento rifiuti o il negozio nel quale avete acquistato il prodotto.

Latviešu valoda (Latvian) - Ekoloģiska informācija klientiem Eiropas Savienības jurisdikcijā

Direktīvā 2002/96/EK ir prasība, ka aprīkojumu, kam pievienota zīme uz paša izstrādājuma vai uz tā iesaiņojuma, nedrīkst izmest nešķirotā veidā kopā ar komunālajiem atkritumiem (tiem, ko rada vietēji iedzīvotāji un uzņēmumi). Šī zīme nozīmē to, ka šī ierīce ir jāizmet atkritumos tā, lai tā nenonāktu kopā ar parastiem mājsaimniecības atkritumiem. Jūsu pienākums ir šo un citas elektriskas un elektroniskas ierīces izmest atkritumos, izmantojot īpašus atkritumu savākšanas veidus un līdzekļus, ko nodrošina valsts un pašvaldību iestādes. Ja izmešana atkritumos un pārstrāde tiek veikta pareizi, tad mazinās iespējamais kaitējums dabai un cilvēku veselībai. Sīkākas ziņas par novecojuša aprīkojuma izmešanu atkritumos jūs varat saņemt vietējā pašvaldībā, atkritumu savākšanas dienestā, kā arī veikalā, kur iegādājāties šo izstrādājumu.

24/48-Port 10/100 + 4-Port Gigabit Smart Switch with Resilient Clustering Technology and PoE

Appendix F

Regulatory Information

Lietuvškai (Lithuanian) - Aplinkosaugos informacija, skirta Europos Sąjungos vartotojams

Europos direktyva 2002/96/EC numato, kad įrangos, kuri ir kurios pakuotė yra pažymėta šiuo simboliu (įveskite simbolį), negalima šalinti kartu su nerūšiuotomis komunalinėmis atliekomis. Šis simbolis rodo, kad gaminį reikia šalinti atskirai nuo bendro buitinių atliekų srauto. Jūs privalote užtikrinti, kad ši ir kita elektros ar elektroninė įranga būtų šalinama per tam tikras nacionalinės ar vietinės valdžios nustatytas atliekų rinkimo sistemas. Tinkamai šalinant ir perdirbant atliekas, bus išvengta galimos žalos aplinkai ir žmonių sveikatai. Daugiau informacijos apie jūsų senos įrangos šalinimą gali pateikti vietinės valdžios institucijos, atliekų šalinimo tarnybos arba parduotuvės, kuriose įsigijote tą gaminį.

Malti (Maltese) - Informazzjoni Ambjentali għal Klijenti fl-Unjoni Ewropea

Id-Direttiva Ewropea 2002/96/KE titlob li t-tagħmir li jkun fih issimbolu fuq il-prodott u/jew fuq l-ippakkjar ma jistax jintrema ma’ skart muniċipali li ma ġiex isseparat. Is-simbolu jindika li dan il-prodott għandu jintrema separatament minn ma’ liskart domestiku regolari. Hija responsabbiltà tiegħek li tarmi dan it-tagħmir u kull tagħmir ieħor ta’ l-elettriku u elettroniku permezz ta’ faċilitajiet ta’ ġbir appuntati apposta mill-gvern jew mill-awtoritajiet lokali. Ir-rimi b’mod korrett u r-riċiklaġġ jgħin jipprevjeni konsegwenzi negattivi potenzjali għall-ambjent u għas-saħħa tal-bniedem. Għal aktar informazzjoni dettaljata dwar ir-rimi tat-tagħmir antik tiegħek, jekk jogħġbok ikkuntattja lill-awtoritajiet lokali tiegħek, is-servizzi għar-rimi ta’ l-iskart, jew il-ħanut minn fejn xtrajt il-prodott.

Nederlands (Dutch) - Milieu-informatie voor klanten in de Europese Unie

De Europese Richtlijn 2002/96/EC schrijft voor dat apparatuur die is voorzien van dit symbool op het product of de verpakking, niet mag worden ingezameld met niet-gescheiden huishoudelijk afval. Dit symbool geeft aan dat het product apart moet worden ingezameld. U bent zelf verantwoordelijk voor de vernietiging van deze en andere elektrische en elektronische apparatuur via de daarvoor door de landelijke of plaatselijke overheid aangewezen inzamelingskanalen. De juiste vernietiging en recycling van deze apparatuur voorkomt mogelijke negatieve gevolgen voor het milieu en de gezondheid. Voor meer informatie over het vernietigen van uw oude apparatuur neemt u contact op met de plaatselijke autoriteiten of afvalverwerkingsdienst, of met de winkel waar u het product hebt aangeschaft.

Norsk (Norwegian) - Miljøinformasjon for kunder i EU

EU-direktiv 2002/96/EF krever at utstyr med følgende symbol

avbildet på produktet og/eller pakningen, ikke må kastes sammen med usortert avfall. Symbolet indikerer at dette produktet skal håndteres atskilt fra ordinær avfallsinnsamling for husholdningsavfall. Det er ditt ansvar å kvitte deg med dette produktet og annet elektrisk og elektronisk avfall via egne innsamlingsordninger slik myndighetene eller kommunene bestemmer. Korrekt avfallshåndtering og gjenvinning vil være med på å forhindre mulige negative konsekvenser for miljø og helse. For nærmere informasjon om håndtering av det kasserte utstyret ditt, kan du ta kontakt med kommunen, en innsamlingsstasjon for avfall eller butikken der du kjøpte produktet.

Magyar (Hungarian) - Környezetvédelmi információ az európai uniós vásárlók számára

A 2002/96/EC számú európai uniós irányelv megkívánja, hogy azokat a termékeket, amelyeken, és/vagy amelyek csomagolásán az alábbi címke megjelenik, tilos a többi szelektálatlan lakossági hulladékkal együtt kidobni. A címke azt jelöli, hogy az adott termék kidobásakor a szokványos háztartási hulladékelszállítási rendszerektõl elkülönített eljárást kell alkalmazni. Az Ön felelõssége, hogy ezt, és más elektromos és elektronikus berendezéseit a kormányzati vagy a helyi hatóságok által kijelölt gyűjtõredszereken keresztül számolja fel. A megfelelõ hulladékfeldolgozás segít a környezetre és az emberi egészségre potenciálisan ártalmas negatív hatások megelõzésében. Ha elavult berendezéseinek felszámolásához további részletes információra van szüksége, kérjük, lépjen kapcsolatba a helyi hatóságokkal, a hulladékfeldolgozási szolgálattal, vagy azzal üzlettel, ahol a terméket vásárolta.

Polski (Polish) - Informacja dla klientów w Unii Europejskiej o przepisach dotyczących ochrony środowiska

Dyrektywa Europejska 2002/96/EC wymaga, aby sprzęt oznaczony symbolem znajdującym się na produkcie i/lub jego opakowaniu nie był wyrzucany razem z innymi niesortowanymi odpadami komunalnymi. Symbol ten wskazuje, że produkt nie powinien być usuwany razem ze zwykłymi odpadami z gospodarstw domowych. Na Państwu spoczywa obowiązek wyrzucania tego i innych urządzeń elektrycznych oraz elektronicznych w punktach odbioru wyznaczonych przez władze krajowe lub lokalne. Pozbywanie się sprzętu we właściwy sposób i jego recykling pomogą zapobiec potencjalnie negatywnym konsekwencjom dla środowiska i zdrowia ludzkiego. W celu uzyskania szczegółowych informacji o usuwaniu starego sprzętu, prosimy zwrócić się do lokalnych władz, służb oczyszczania miasta lub sklepu, w którym produkt został nabyty.

24/48-Port 10/100 + 4-Port Gigabit Smart Switch with Resilient Clustering Technology and PoE

Appendix F

Regulatory Information

Português (Portuguese) - Informação ambiental para clientes da União Europeia

A Directiva Europeia 2002/96/CE exige que o equipamento que exibe este símbolo no produto e/ou na sua embalagem não seja eliminado junto com os resíduos municipais não separados. O símbolo indica que este produto deve ser eliminado separadamente dos resíduos domésticos regulares. É da sua responsabilidade eliminar este e qualquer outro equipamento eléctrico e electrónico através das instalações de recolha designadas pelas autoridades governamentais ou locais. A eliminação e reciclagem correctas ajudarão a prevenir as consequências negativas para o ambiente e para a saúde humana. Para obter informações mais detalhadas sobre a forma de eliminar o seu equipamento antigo, contacte as autoridades locais, os serviços de eliminação de resíduos ou o estabelecimento comercial onde adquiriu o produto.

Română (Romanian) - Informaţii de mediu pentru clienţii din Uniunea Europeană

Directiva europeană 2002/96/CE impune ca echipamentele care prezintă acest simbol pe produs şi/sau pe ambalajul acestuia să nu fie casate împreună cu gunoiul menajer municipal. Simbolul indică faptul că acest produs trebuie să fie casat separat de gunoiul menajer obişnuit. Este responsabilitatea dvs. să casaţi acest produs şi alte echipamente electrice şi electronice prin intermediul unităţilor de colectare special desemnate de guvern sau de autorităţile locale. Casarea şi reciclarea corecte vor ajuta la prevenirea potenţialelor consecinţe negative asupra sănătăţii mediului şi a oamenilor. Pentru mai multe informaţii detaliate cu privire la casarea acestui echipament vechi, contactaţi autorităţile locale, serviciul de salubrizare sau magazinul de la care aţi achiziţionat produsul.

Slovenčina (Slovak) - Informácie o ochrane životného prostredia pre zákazníkov v Európskej únii

Podľa európskej smernice 2002/96/ES zariadenie s týmto symbolom na produkte a/alebo jeho balení nesmie byť likvidované spolu s netriedeným komunálnym odpadom. Symbol znamená, že produkt by sa mal likvidovať oddelene od bežného odpadu z domácností. Je vašou povinnosťou likvidovať toto i ostatné elektrické a elektronické zariadenia prostredníctvom špecializovaných zberných zariadení určených vládou alebo miestnymi orgánmi. Správna likvidácia a recyklácia pomôže zabrániť prípadným negatívnym dopadom na životné prostredie a zdravie ľudí. Ak máte záujem o podrobnejšie informácie o likvidácii starého zariadenia, obráťte sa, prosím, na miestne orgány, organizácie zaoberajúce sa likvidáciou odpadov alebo obchod, v ktorom ste si produkt zakúpili.

Slovenčina (Slovene) - Okoljske informacije za stranke v Evropski uniji

Evropska direktiva 2002/96/EC prepoveduje odlaganje opreme, označene s tem simbolom – na izdelku in/ali na embalaži – med običajne, nerazvrščene odpadke. Ta simbol opozarja, da je treba izdelek odvreči ločeno od preostalih gospodinjskih odpadkov. Vaša odgovornost je, da to in preostalo električno in elektronsko opremo odnesete na posebna zbirališča, ki jih določijo državne ustanove ali lokalna uprava. S pravilnim odlaganjem in recikliranjem boste preprečili morebitne škodljive vplive na okolje in zdravje ljudi. Če želite izvedeti več o odlaganju stare opreme, se obrnite na lokalno upravo, odpad ali trgovino, kjer ste izdelek kupili.

Suomi (Finnish) - Ympäristöä koskevia tietoja EUalueen asiakkaille

EU-direktiivi 2002/96/EY edellyttää, että jos laitteistossa on tämä symboli itse tuotteessa ja/tai sen pakkauksessa, laitteistoa ei saa hävittää lajittelemattoman yhdyskuntajätteen mukana. Symboli merkitsee sitä, että tämä tuote on hävitettävä erillään tavallisesta kotitalousjätteestä. Sinun vastuullasi on hävittää tämä elektroniikkatuote ja muut vastaavat elektroniikkatuotteet viemällä tuote tai tuotteet viranomaisten määräämään keräyspisteeseen. Laitteiston oikea hävittäminen estää mahdolliset kielteiset vaikutukset ympäristöön ja ihmisten terveyteen. Lisätietoja vanhan laitteiston oikeasta hävitystavasta saa paikallisilta viranomaisilta, jätteenhävityspalvelusta tai siitä myymälästä, josta ostit tuotteen.

Svenska (Swedish) - Miljöinformation för kunder i Europeiska unionen

Det europeiska direktivet 2002/96/EC kräver att utrustning med denna symbol på produkten och/eller förpackningen inte får kastas med osorterat kommunalt avfall. Symbolen visar att denna produkt bör kastas efter att den avskiljts från vanligt hushållsavfall. Det faller på ditt ansvar att kasta denna och annan elektrisk och elektronisk utrustning på fastställda insamlingsplatser utsedda av regeringen eller lokala myndigheter. Korrekt kassering och återvinning skyddar mot eventuella negativa konsekvenser för miljön och personhälsa. För mer detaljerad information om kassering av din gamla utrustning kontaktar du dina lokala myndigheter, avfallshanteringen eller butiken där du köpte produkten.

WEB: For additional information, please visit

www.linksys.com

24/48-Port 10/100 + 4-Port Gigabit Smart Switch with Resilient Clustering Technology and PoE

Appendix G

Appendix G: Contact Information

Contact Information

Linksys Contact Information

Website http://www.linksys.com

Support Site http://www.linksys.com/support

FTP Site ftp.linksys.com

Advice Line 800-546-5797 (LINKSYS)

Support 800-326-7114

RMA (Return Merchandise Authorization)

NOTE: Details on warranty and RMA issues can

be found in the Warranty section of this Guide.

http://www.linksys.com/warranty

24/48-Port 10/100 + 4-Port Gigabit Smart Switch with Resilient Clustering Technology and PoE

7120410NC-AI

Cisco Systems SLM248G4PS, SLM224G4PS User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Chapter 1: Introduction

Chapter 2: Product Overview

SLM248G4PS

Front Panel

Back Panel

SLM224G4PS

Front Panel

Back Panel

Chapter 3: Installation

Overview

Pre-Installation Considerations

Fast Ethernet Considerations

Full-Duplex Considerations

1000BASE-T Cable Requirements

Positioning the Switch

Placement Options

Desktop Placement

Rack-Mount Placement

Hardware Installation

Uplinking the Switch

Configuring Stack Mode

Reassigning a Slave Unit as the Master Unit

Overview

Using the HyperTerminal Application

Using telnet

How to Use the Console Interface

Switch Main Menu

System Configuration Menu

Login

Port Status Menu

Port Configuration

System Mode

Help

Logout

Chapter 5: Configuration Using the Web-based Utility

Setup

Setup > Summary

Setup > Zoom

Setup > Network Settings

Setup > Time

Setup > Stack Management

Port Management

Port Management > Port Settings

Port Management > Link Aggregation

Port Management > LACP

Port Management > PoE Power Settings

VLAN Management

VLAN Management > Port Setting

VLAN Management > Create VLAN

VLAN Management > Port to VLAN

VLAN Management > VLAN to Port

Statistics

Statistics > RMON Statistics

Statistics > RMON History

Statistics > RMON Alarms

Statistics > RMON Events

Statistics > Port Utilization

Statistics > Interface Statistics

Security

Security > 802.1x Settings

Security > Port Security

Security > Storm Control

Security > RADIUS

QoS > Queue Settings

QoS > CoS Settings

QoS > DSCP Settings

QoS > Basic Mode

QoS > Bandwidth

Spanning Tree

Spanning Tree > STP Status

Spanning Tree > Global STP

Spanning Tree > STP Port Settings

Multicast

Multicast > IGMP Snooping

Multicast > Bridge Multicast

Multicast > Bridge Multicast Forward All