Allied Telesis AT-S29 User Manual

User’s Guide
Management Software
AT-S29
FOR USE WITH THE AT-8324SX FAST ETHERNET SWITCH PRODUCT
VERSION 1.12
PN 613-50115-00 Rev A
Copyright  2000 Allied Telesyn International, Corp. 960 Stewart Drive Suite B, Sunnyvale, CA 94086 USA
All rights reserved. No part of this publication may be reproduced without prior written permission from Allied Telesyn International, Corp.
Com is a registered trademark of Allied Telesyn International, Corp.
Centre
Internet Explorer is a trademark of Microsoft Corporation. Netscape Navigator is a registered trademark of Netscape Communications Corporation. All other product names, company names, logos or other designations mentioned herein are trademarks or registered trademarks of their respective owners.
Allied Telesyn International, Corp. reserves the right to make changes in specifications and other information contained in this document without prior written notice. The information provided herein is subject to change without notice. In no event shall Allied Telesyn International, Corp. be liable for any incidental, special, indirect, or consequential damages whatsoever, including but not limited to lost profits, arising out of or related to this manual or the information contained herein, even if Allied Telesyn International, Corp. has been advised of, known, or should have known, the possibility of such damages.
Table of Contents
Preface
Supported Platform Purpose of This Guide How This Guide is Organized Where to Find Web-based Guides Document Conventions Contacting Allied Telesyn Technical Support
Returning Products FTP Server For Sales or Corporate Information Tell Us What You Think
...................................................................................................................................................................................................................vii
........................................................................................................................................................................................vii
...................................................................................................................................................................................viii
......................................................................................................................................................................ix
............................................................................................................................................................ x
.................................................................................................................................................................................xi
...................................................................................................................................xii
Online Support Telephone and Fax Support E-mail Support
............................................................................................................................................................................................................xiv
.......................................................................................................................................................................................... xii
............................................................................................................................................................... xii
........................................................................................................................................................................................... xii
........................................................................................................................................................................................xiii
........................................................................................................................................................ xv
.................................................................................................................................................................................xvi
Chapter 1 Switch Management
Configuration Options
....................................................................................................................................................................................17
...................................................................................................................................................................................17
Making Connections for System Configuration
Serial Connection In-Band Connections
..................................................................................................................................................................................... 18
............................................................................................................................................................................. 18
Chapter 2 Using the System Configuration Program
Login Screen Main Menu System Information Menu
Displaying System Information
........................................................................................................................................................................................................21
...........................................................................................................................................................................................................22
...........................................................................................................................................................................25
........................................................................................................................................................ 25
...................................................................................................................................21
Displaying Version and Module Information
Management Setup Menu
Changing the Network Configuration Configuring the Serial Port Assigning SNMP Parameters Console Login Configuration Downloading System Software
..........................................................................................................................................................................28
.......................................................................................................................................... 29
................................................................................................................................................................. 33
............................................................................................................................................................. 34
............................................................................................................................................................ 37
....................................................................................................................................................... 38
..............................................................................................................................18
........................................................................................................................... 26
iii
Table of Contents
Configuring the Switch
Configuring Port Parameters Viewing the Current Port Configuration Using the Spanning Tree Algorithm
................................................................................................................................................................................. 39
............................................................................................................................................................ 41
................................................................................................................................. .. . 4 2
............................................................................................................................................. 43
Viewing the Current Spanning Tree Configuration Using a Mirror Port for Analysis Configuring Port Trunks IGMP Multicast Filtering
...................................................................................................................................................................... 51
...................................................................................................................................................................... 53
Configuring Bridge MIB Extensions Configuring Traffic Classes Configuring Virtual LANs
Monitoring the Switch
.................................................................................................................................................................................. 64
Displaying Port Statistics Displaying RMON Statistics Displaying the Unicast Address Table
....................................................................................................................................................... 50
............................................................................................................................................... 55
................................................................................................................................................................. 56
.................................................................................................................................................................... 58
..................................................................................................................................................................... 65
................................................................................................................................................................ 66
......................................................................................................................................... 68
Displaying the IP Multicast Registration Table
Configuring Static Unicast Addresses Resetting the System Logging Off the System
..................................................................................................................................................................................... 73
................................................................................................................................................................................ 74
.......................................................................................................................................... 71
Chapter 3 Web-based Management
Web-based Configuration and Monitoring Navigating the Web Browser Interface
Home Page
Panel Display
Main Menu System Information Switch Information
Main Board
................................................................................................................................................................................................. 76
............................................................................................................................................................................................. 77
.................................................................................................................................................................................................. 77
........................................................................................................................................................................................ 79
......................................................................................................................................................................................... 80
.................................................................................................................................................................................................. 80
Management Expansion Slot
Expansion Slot IP Configuration SNMP Configuration
........................................................................................................................................................................................... 81
................................................................................................................................................................................................ 82
....................................................................................................................................................................................... 83
SNMP Community
Trap Managers
.......................................................................................................................................................................................... 84
Security Configuration
Change Password Firmware Upgrade Options
Web Upload Management
TFTP Download Management Address Table Configuration STA (Spanning Tree Algorithm)
Spanning Tree Information
Spanning Tree Configuration
STA Port Configuration Configuring Bridge MIB Extensions
Bridge Capability
Bridge Settings Priority
....................................................................................................................................................................................................................97
......................................................................................................................................................................................... 96
Port Priority Configuration
........................................................................................................................................................................ 75
....................................................................................................................................... 75
................................................................................................................................................ 76
............................................................................................................................................................ 80
.................................................................................................................................................................................. 83
.................................................................................................................................................................................. 85
.................................................................................................................................................................................... 85
.......................................................................................................................................................................86
................................................................................................................................................................. 86
......................................................................................................................................................... 87
..................................................................................................................................................................... 88
............................................................................................................................................................... 89
................................................................................................................................................................ 89
........................................................................................................................................................... 92
........................................................................................................................................................................ 94
....................................................................................................................................................... 95
..................................................................................................................................................................................... 95
................................................................................................................................................................. 97
.............................................................................................................. 46
....................................................................................................................... 70
iv
AT-S29 Management Software User’s Guide
Port Traffic Class Information
Configuring Virtual LANs
..............................................................................................................................................................................99
VLAN Basic Information VLAN Current Table VLAN Static List VLAN Static Table
............................................................................................................................................................................. 100
...................................................................................................................................................................................... 101
.................................................................................................................................................................................. 101
VLAN Static Membership by Port VLAN Port Configuration
IGMP Multicast Filtering
Configuring IGMP
.............................................................................................................................................................................105
................................................................................................................................................................................. 105
IP Multicast Registration Table
Port Menus
Port Information Port Configuration
........................................................................................................................................................................................................107
.................................................................................................................................................................................... 107
................................................................................................................................................................................ 108
Expansion Port Information
Expansion Port Configuration Using a Port Mirror for Analysis Port Trunk Configuration Port Statistics
...................................................................................................................................................................................................114
Etherlike Statistics
RMON Statistics
..........................................................................................................................................................................112
................................................................................................................................................................................. 114
...................................................................................................................................................................................... 115
............................................................................................................................................................ 98
........................................................................................................................................................................ 99
................................................................................................................................................. 103
.................................................................................................................................................................. 104
...................................................................................................................................................... 106
............................................................................................................................................................ 109
........................................................................................................................................................ 110
............................................................................................................................................................. 111
Chapter 4 Advanced Topics
Spanning Tree Algorithm
Using STA and Trunk Ports Virtual LANs
Assigning Ports to VLANs
.........................................................................................................................................................................................119
..........................................................................................................................................................................119
.............................................................................................................................................................. 120
......................................................................................................................................................................................................121
................................................................................................................................................................. 122
Forwarding Tagged/ Untagged Frames
Forwarding Traffic with Unknown VLAN Tags
Automatic VLAN Registration Port Trunks
........................................................................................................................................................................................................124
Class-of-Service (CoS) Support
........................................................................................................................................................ 123
...............................................................................................................................................................125
IGMP Snooping and IP Multicast Filtering SNMP Management Software Remote Monitoring
......................................................................................................................................................................................128
................................................................................................................................................................127
................................................................................................................................... 123
...................................................................................................................... 123
....................................................................................................................................... 126
Appendix A Troubleshooting
Console Connection In-Band Connection Upgrading Firmware via the Serial Port
..........................................................................................................................................................................................129
....................................................................................................................................................................................129
.....................................................................................................................................................................................129
............................................................................................................................................ 130
Appendix B Pin Assignments
DB9 Serial Port Pin Description
DB-9 Port Pin Assignments
..........................................................................................................................................................................................133
.............................................................................................................................................................. 133
.............................................................................................................................................................. 134
Connection from Switch’s Serial Port to 9-Pin COM Port on PC
Connection from Switch’s Serial Port to 25-Pin DCE Port
Connection from Switch’s Serial Port to 25-Pin DTE Port on PC
.................................................................................. 134
............................................................................................... 135
................................................................................. 135
v

Preface

Supported Platform

This guide contains instructions on how to use the AT-S29 software to manage and configure your AT-8324SX Fast Ethernet Switch.
Version 1.12 of the AT-S29 software is supported on the following Fast Ethernet switch:
AT-8324SX Fast Ethernet Switch
This version supports the following optional modules for the switch:
AT-BMGMT Management Module
AT-BSTACK1 Stacking Module
AT-B15/SX 1000Base-X Gigabit Expansion Module
AT-B15/LX 1000Base-X Gigabit Expansion Module
AT-B17 100Base-FX Expansion Module
vii
Preface

Purpose of This Guide

This guide is intended for network administrators who are responsible for managing the switches. Network administrators should be familiar with Ethernet switches, Ethernet and Fast Ethernet technology, bridging, and the Spanning Tree Protocol (STP).
viii

How This Guide is Organized

This guide contains the following chapters and appendices:
AT-S29 Management Software User’s Guide
Chapter 1,
Switch Management
, explains switch configuration options
and required switch connections.
Chapter 2,
Using the System Configuration Program
, describes how to configure the switch and its ports using the Telnet program or by connecting a terminal to the console port on the management module.
Chapter 3,
Web-Based Management
, explains how to configure the
switch and its ports using a Web browser.
Chapter 4,
Advanced Topics
, describes networking concepts such as
spanning tree algorithm and virtual LANs, SNMP, and RMON.
Appendix A,
Troubleshooting
, describes known problems and
recommended solutions.
Appendix B,
Pin Assignments
, briefly describes different wiring
assignments.
ix
Preface

Where to Find Web-based Guides

The Allied Telesyn web site at www.alliedtelesyn.com offers you an easy way to access the most recent documentation and technical information for all of our products. All web-based documentation for this product and other Allied Telesyn products can be downloaded from the web site in pdf format.
There are several manuals that you will need in order to manage your Ethernet switch. Some guides are shipped with their respective products, while other manuals, such as this one, are only available from the Allied Telesyn web site.
The following manual contains the complete hardware installation instructions for the switch. You can obtain this manual from the Allied Telesyn web site.
AT-8324SX Fast Ethernet Switch Installation Guide
,
PN 613-50118-00
The following manual is shipped with the switch and contains an abbreviated version of the installation instructions:
AT-8324SX Fast Ethernet Switch Quick Install Guide
,
PN 613-50120-00
x

Document Conventions

This guide uses several conventions that you should become familiar with first before you begin to install the product.
Note
Notes provide additional information.
Warning
Warnings inform you that performing or omitting a specific action may result in bodily injury.
Caution
Cautions inform you that performing or omitting a specific action may result in equipment damage or loss of data.
AT-S29 Management Software User’s Guide
xi
Preface

Contacting Allied Telesyn Technical Support

There are several ways that you can contact Allied Telesyn technical support: online, telephone, fax and e-mail.

Online Support

Telephone and
Fax Support
You can request technical support online by filling out the Technical Support Form at www.alliedtelesyn.com/forms/support.htm.
Americas
United States, Canada, Mexico, Central America, South America Tel: 1 (800) 428-4835, option 4 Fax: 1 (503) 639-3176
Asia
Singapore, Taiwan, Thailand, Malaysia, Indonesia, Korea, Philippines, China, India, Hong Kong Tel: (+65) 381-5612 Fax: (+65) 383-3830
Australia
Tel: 1 (800) 000-880 Fax: (+61) 2-9438-4966
France
France, Belgium, Luxembourg, The Netherlands, Middle East, Africa Tel: (+33) 0-1-60-92-15-25 Fax: (+33) 0-1-69-28-37-49
Germany
Germany, Switzerland, Austria, Eastern Europe Tel: (+49) 0130/83-56-66 Fax: (+49) 30-435-900-115
Italy
Italy, Spain, Portugal, Greece, Turkey, Israe Tel: (+39) 02-416047 Fax: (+39) 02-419282
Japan
Tel: (+81) 3-3443-5640 Fax: (+81) 3-3443-2443
United Kingdom
United Kingdom, Denmark, Norway, Sweden, Finland Tel: (+0044) 1235-442500 Fax: (+44) 1-235-442680
l

E-mail Support

xii
United States and Canada
TS1@alliedtelesyn.com
Latin America, Mexico, Puerto Rico, Caribbean, and Virgin Islands
latin_america@alliedtelesyn.com
United Kingdom, Sweden, Norway, Denmark, and Finland
support_europe@alliedtelesyn.com

Returning Products

AT-S29 Management Software User’s Guide
Products for return or repair must first be assigned a Return Materials Authorization (RMA) number. A product sent to Allied Telesyn without a RMA number will be returned to the sender at the sender’s expense.
To obtain an RMA number, contact Allied Telesyn’s Technical Support at one of the following locations:
North America
2205 Ringwood Ave San Jose, CA 95131 Tel: 1-800-428-4835, option 4 Fax: 1-503-639-3716
Latin America, the Caribbean, Virgin Islands
Tel: international code + 425-481-3852 Fax: international code + 425-483-9458
European Customer Support Centre
10/11 Bridgemead Close Westmead Industrial Estate Swindon, Wiltshire SN5 7YT England Tel: +44-1793-501401 Fax: +44-1793-431099
Mexico and Puerto Rico
Tel: 1-800-424-5012, ext 3852 or
1-800-424-4284, ext 385 Mexico only: 95-800-424-5012, ext 3852 Fax: international code + 425-489-9191
2
xiii
Preface

FTP Server

If you need a driver for an Allied Telesyn device and you know the name of the driver, you can download the software by connecting directly to our FTP server at ftp://gateway.centre.com.
At login, enter ‘anonymous’. Enter your e-mail address for the password as requested by the server at login.
xiv

For Sales or Corporate Information

AT-S29 Management Software User’s Guide
Allied Telesyn International, Corp.
19800 North Creek Parkway, Suite 200 Bothell, WA 98011 Tel: 1 (425) 487-8880 Fax: 1 (425) 489-9191
Allied Telesyn International, Corp.
960 Stewart Drive, Suite B Sunnyvale, CA 94086 Tel: 1 (800) 424-4284 (USA and Canada Fax: 1 (408) 736-0100
)
xv
Preface

Tell Us What You Think

If you have any comments or suggestions on how we might improve this or other Allied Telesyn documents, please fill out the Send Us Feedback Form at www.alliedtelesyn.com/forms/feedback.htm.
xvi
Chapter 1

Switch Management

Configuration Options

For advanced management capability, the AT-8324SX switch’s AT-BMGMT Management Module provides a menu-driven system configuration program. This program can be accessed by a direct or modem connection to the serial port on the management module (out­of-band), or by a Telnet connection over the network (in-band).
The management module is based on SNMP (Simple Network Management Protocol). This SNMP agent permits a switch stack to be managed from any PC in the network using in-band management software.
The management module also includes an embedded HTTP Web agent. This Web agent can be accessed using a standard Web browser from any computer attached to the network.
The system configuration program and the SNMP agent support management functions such as:
Enable/disable any port
Set the communication mode for any port
Configure SNMP parameters
Select VLANs or multicast filtering
Display system information or statistics
Configure the switch to join a Spanning Tree Domain
Download system firmware
Restart the system
17
Switch Management

Making Connections for System Configuration

The switch includes a menu-driven configuration program. The ASCII interface to this program can be accessed by making a direct connection to the serial port on the Network Management Module, or by a Telnet connection to the switch over the network.
This section describes how to access the menu-driven configuration program via:
Serial connection: A terminal or workstation connected to the serial port on the Network Management Module.
Telnet connection: A workstation connected to a remote switch via a Telnet connection.
It also describes how to access the embedded Web agent over the network using any standard browser, or with the provided network management software or other third-party management software.
Serial Connection
In-Band
Connections
Attach a VT100 compatible terminal or a PC running a terminal emulation program to the serial port on the Network Management Module. Use the null-modem cable provided with this package, or use a null modem connection that complies with the wiring assignments shown in Appendix B, Pin Assignments of this guide.
When attaching to a PC, set terminal emulation type to VT100, specify the port used by your PC (i.e., COM 1~4), and then set communications to 8 data bits, 1 stop bit, no parity, and 9600 bps (for initial configuration). Also be sure to set flow control to "none." (Refer to
Configuring the Serial Port
on page 33 for a complete description of
configuration options.)
Prior to accessing the Network Management Module via a network connection, you must first configure it with a valid IP address, subnet mask, and default gateway using an out-of-band connection or the BootP protocol.
Telnet Connection
After configuring the switch’s IP parameters, you can access the on­board configuration program from anywhere within the attached network using Telnet.
18
Note
Use the Network Configuration menu to specify the maximum number of simultaneous Telnet sessions that are supported by the system.
In-Band Network Connection
The on-board configuration program can be accessed using Telnet from any computer attached to the network. The switch and stack can also be managed by any computer using a Web browser (Internet Explorer 4.0 or above, or Netscape Navigator 4.0 or above), or from a network computer using network management software.
Note
The on-board program only provides access to basic configuration functions. To access the full range of SNMP management functions, you must use SNMP-based network management software.
19

Chapter 2

AT-8324SX version 1.12
V1.12 05-10-2000 (c) Copyright by Allied Telesyn
User Name : Password :

Using the System Configuration Program

Login Screen

Once a direct connection to the serial port or a Telnet connection is established, the login screen for the on-board configuration program appears. If this is your first time to log into the configuration program, then the default user names are "admin" and "guest," with no password. The administrator has Read/Write access to all configuration parameters and statistics, while the guest has Read Only access to the management program.
You should define a new administrator password, record it and put it in a safe place. Select Console Login Configuration from the Management Setup Menu and enter a a new password for the administrator. Note that passwords can consist of up to 11 alphanumeric characters and are not case sensitive.
Based on the default configuration, a user is allowed three attempts to enter the correct password; on the third failed attempt the current connection is terminated.
Note
21
Using the System Configuration Program

Main Menu

With the system configuration program you can define system parameters, manage and control the switch, the connected stack and all its ports, or monitor network conditions. The figure below of the Main Menu and the following table briefly describe the selections available from this program.
Note
Options for the currently selected item are displayed in the highlighted area at the bottom of the interface screen.
Main Menu =========
System Information Menu ... Management Setup Menu ...
Device Control Menu ...
Network Monitor Menu ...
Restart System Menu ...
Exit
Use <TAB> or arrow keys to move. <Enter> to select.
22
AT-S29 Management Software User’s Guide
Menu Description
System Information Menu:
System Information Provides basic system description, including contact information.
Switch Information Shows hardware/firmware version numbers, power status, and
expansion modules used in the stack.
Management Setup Menu:
Network Configuration Includes IP setup, Ping facility, HTTP (Web Agent) setup, Telnet
enable, and MAC address.
Serial Port Configuration Sets communication parameters for the serial port, including
management mode, baud rate, console time-out, and screen data refresh interval.
SNMP Configuration Activates traps; and configures communities and trap managers.
Console Login Configuration
Sets the user names and passwords for system access, as well as the invalid password threshold and lockout time.
TFTP Download Downloads new version of firmware to update your system (in-
band).
Device Control Menu:
Port Configuration Enables any port, enables/disables flow control, and sets
communication mode to auto-negotiation, full duplex or half duplex.
Port Information Displays operational status, including link state, flow control
method, and duplex mode.
Spanning Tree Configuration
Enables Spanning Tree Algorithm; also sets parameters for hello time, maximum message age, switch priority, and forward delay; as well as port priority and path cost.
Spanning Tree
Displays full listing of parameters for Spanning Tree Algorithm.
Information
Mirror Port Configuration Specifies the source and target ports for mirroring.
Port Trunking
Specifies ports to group into aggregate trunks.
Configuration
IGMP Configuration Configures IGMP multicast filtering.
Extended Bridge configuration
Displays/configures extended bridge capabilities provided by this switch, including support for traffic classes, GMRP multicast filtering, and VLAN extensions.
802.1P Configuration Configures default port priorities and queue assignments.
23
Using the System Configuration Program
Menu Description
802.1Q VLAN Base Information
802.1Q VLAN Current
Displays basic VLAN information, such as VLAN version number and maximum VLANs supported.
Displays VLAN groups and port members.
Table Information
802.1Q VLAN Static Table Configuration
Configures VLAN groups via static assignments, including setting port members, or restricting ports from being dynamically added to a port by the GVRP protocol.
802.1Q VLAN Port Configuration
Displays/configures port-specific VLAN settings, including PVID, ingress filtering, and GVRP.
Port GARP Configuration1Configures settings used in multicast filtering.
Port GMRP Configuration1Configures GMRP multicast filtering.
Network Monitor Menu:
Port Statistics Displays statistics on network traffic passing through the selected
port.
RMON Statistics Displays detailed statistical information for the selected port such
as packet type and frame size counters.
Unicast Address Table Provides full address listing, as well as search and clear functions.
Multicast Address Registration Table
1
IP Multicast Registration Table
Static Unicast Address Table Configuration
Static Multicast Address Table Configuration
1
Restart System
Exit
1. Not implemented in this firmware release.
-
Displays all the multicast groups active on this switch, including multicast IP addresses and corresponding VLAN IDs.
Used to manually configure host MAC address in the unicast table.
-
Restarts system with options to use POST, or to retain factory defaults, IP settings, or user authentication settings.
Exits the configuration program.
24

System Information Menu

System Information Menu =======================
System Information ...
Switch Information ...
<OK>
Use <TAB> or arrow keys to move. <Enter> to select.
System Information ==================
System Description : AT-8324SX version 1.12
System Object ID : 1.3.6.1.4.1.207.1.4.42 System Up Time : 48067 (0 day, 1 hr, 2min, 34 sec) System Name : Engineering Unit #001 System Contact : MIS Dept. System Location : Lab #3
<APPLY> <OK> <CANCEL>
Use <TAB> or arrow keys to move. <Enter> to select.
Use the System Information Menu to display a basic description of the switch, including contact information, and hardware/ firmware versions.
AT-S29 Management Software User’s Guide
Displaying
System
Information
Use the System Information screen to display descriptive information about the switch or for quick system identification, as shown in the following figure and table.
25
Using the System Configuration Program
Parameter Description
System Description System hardware description.
System Object ID MIB II object identifier for switch’s network
management subsystem (ATI: 207.1.4.42)
System Up Time Length of time the current management agent
has been running. (Note that the first value is 1/100 seconds.)
System Name
System Contact
System Location
1
1
Name assigned to the switch system.
Contact person for the system.
1
Specifies the area or location where the system resides.
1. Maximum string length is 99, but the screen only displays 45 characters. You can use the arrow keys to browse the whole string.
Displaying
Version and
Module
Information
Use the Switch Information screen to display hardware/firmware version numbers for the main board and agent modules, as well as the power status and modules plugged into the system.
Screen Information: Unit 1
=================
Main Board
Hardware Version Firmware Version
Serial Number : 00-30-84-9A-3B-80
Port Number Internal Power Status Redundant Power Status Expansion Slot 1 : 1000Base-SX Expansion Slot 2 : Stacking
Agent Module
Hardware Version POST ROM Version : 1.10 Firmware Version : 1.12 SNMP Agent : Master
<APPLY> <OK> <CANCEL>
Use <TAB> or arrow keys to move. <Enter> to select.
V3.0
:
1.11
:
25
:
Active
:
Inactive
:
: V2.
0 (801 CPU)
26
AT-S29 Management Software User’s Guide
Menu Description
Main Board:
Hardware Version Hardware version of the main board.
Firmware Version System firmware version in ROM.
Serial Number MAC address associated with the main
board.
Port Number Number of ports in this unit.
Internal Power Status Power status for the switch.
Redundant Power Status Redundant power status for the switch.
Expansion Slot 1 Shows module type if inserted (100Base-
FX, 1000Base-SX, or 1000Base-LX).
Expansion Slot 2 Shows module type if inserted (100Base-
FX, 1000Base-SX, 1000Base-LX, or Stack).
Menu Description
Agent Module:
Hardware Version Hardware version of the agent module.
POST ROM Version Power-On Self-Test version number.
Firmware Version Firmware version of the agent module.
SNMP Agent Shows if this module is Master or
Backup.
27
Using the System Configuration Program

Management Setup Menu

After initially logging onto the system, adjust the communication parameters for your console to ensure a reliable connection (Console Configuration menu). Specify the IP addresses for the agent module (Network Configuration / IP Configuration), and then set the Administrator and User passwords (Console Login Configuration). Remember to record them in a safe place. Also set the community string which controls access to the on-board SNMP agent via in-band management software (SNMP Configuration). The items provided by the Management Setup Menu are described in the following sections.
Management Setup
=================
Network Configuration ...
Serial Port Configuration ...
SNMP Configuration ...
Console Login Configuration ... TFTP Download ...
<OK>
Use <TAB> or arrow keys to move. <Enter> to select.
28
AT-S29 Management Software User’s Guide
Network Configuration
=================
IP Configuration ... IP Connectivity Test (Ping) ...
HTTP Configuration ...
MAX Number of Allowed Telnet Sessions (1 -4) : 2
MAC Address : 00-30-84-9A-3B-80
<APPLY> <OK> <CANCEL>
Use <TAB> or arrow keys to move. <Enter> to select.
Changing the
Network
Configuration
Use the Network Configuration menu to set the bootup option, configure the switch’s Internet Protocol (IP) parameters, enable the on­board Web Agent, or enable Telnet access. The screen shown below is described in the following table.
Parameter Description
IP Configuration Screen used to set the bootup option, or
configure the switch’s IP parameters.
IP Connectivity Test (Ping) Screen used to test IP connectivity to a
specified device.
HTTP Configuration Screen used to enable Web Agent.
MAX Number of Allowed Telnet Sessions
The maximum number of Telnet sessions allowed to simultaneously access the agent module.
MAC Address Physical address of the agent module.
29
Using the System Configuration Program
IP Configuration
Use the IP Configuration screen to set the bootup option, or configure the switch’s IP parameters. The screen shown below is described in the following table.
Network Configuration IP Configuration
=================
Interface Type : Ethernet
IP Address : 149.35.19.10
Subnet Mask : 255.255.255.0
Gateway IP : 149.35.1.1 IP State : USER-CONFIG
<APPLY> <OK> <CANCEL>
Use <TAB> or arrow keys to move, other keys to make
changes.
<Space> to toggle.
Parameter Default Description
Ethernet Interface
IP Address 10.1.0.1 IP address of the stack you are managing when accessing the
agent module over the network. The agent module supports SNMP over UDP/IP transport protocol. In this environment, all systems on the Internet, such as network interconnection devices and any PC accessing the agent module are assigned an IP address. Valid IP addresses consist of four numbers, of 0 to 255, and separated by periods. Anything outside of this format will not be accepted by the configuration program.
Subnet Mask 255.255.0.0 Subnet mask of the agent you have selected. This mask
identifies the host address bits used for routing to specific subnets.
30
Parameter Default Description
Network Configuration IP Connectivity Test (Ping)
=================
IP Address : 149.35.211.109
Test Times : 1000 Interval : 1
Success : 1000 Failure : 0
[Start]
<OK>
Use <TAB> or arrow keys to move. <Enter> to select.
AT-S29 Management Software User’s Guide
Default
0.0.0.0 Gateway used to pass trap messages from the switch’s agent
Gateway
IP State USER-
CONFIG
to the management station. Note that the gateway must be defined if the management station is located in a different IP segment.
Specifies whether IP functionality is enabled via manual configuration, or set by Boot Protocol (BootP). Options include: USER-CONFIG - IP functionality is enabled based on the default or user specified IP Configuration. (This is the default setting.) BootP Get IP - IP is enabled but will not function until a BootP reply has been received. BootP requests will be periodically broadcast by the switch in an effort to learn its IP address. (BootP values include the IP address, default gateway, subnet mask, TFTP boot file name, and TFTP server IP.)
IP Connectivity Test (Ping)
Use the IP Connectivity Test to see if another site on the Internet can be reached. The screen shown below is described in the following table.
Parameter Description
IP Address IP address of the site you want to ping
Test Times The number of ICMP echo requests to send to the specified site
(1~1000)
Interval The interval (in seconds) between pinging the specified site (1~ 10
seconds)
Success/Failure The number of times the specified site has responded or not to pinging
31
Using the System Configuration Program
HTTP Configuration
Use the HTTP Configuration screen to enable/disable the on-board Web Agent, and to specify the TCP port that will provide HTTP service. The screen shown below is described in the following table.
Network Configuration: HTTP Configuration
=================
HTTP Server : ENABLED
HTTP Port Number : 80
<APPLY> <OK> <CANCEL>
Use <TAB> or arrow keys to move. <Enter> to select.
Parameter Description
HTTP Server Enables/disables access to the on-board Web
Agent.
HTTP Port Number Specifies the TCP port that will provide HTTP
service. (Range is 0~65535. Default is Port 80. Telnet Port 23 is prohibited.)
32
AT-S29 Management Software User’s Guide
Serial Port Configuration
========================
Management Mode : CONSOLE MODE
Baud rate : 9600
Data bits : 8 Stop bits : 1 Parity : NONE Time-Out (in minutes) : 10 Auto Refresh (in seconds) : 5
<APPLY> <OK> <CANCEL>
Use <TAB> or arrow keys to move. <Space> to select.
Configuring the
Serial Port
You can access the on-board configuration program by attaching a VT100 compatible device to the switch’s serial port. (For more information on connecting to this port, refer to the section on Making the Connections Required for System Configuration on page 9.) The communication parameters for this port are accessed from the Serial Port Configuration screen seen below and described in the following table.
Parameter Default Description
Management Mode
Console Mode Indicates that the console port settings are for direct console
connection.
Baud Rate 9600 bps The rate at which data is sent between devices. (Options:
2400, 4800, 9600, 19200 bps, and Auto detection).
Databits 8 bits Sets the databits of the RS-232 port. (Options: 7, 8)
Stopbits 1 bit Sets the stop bits of the RS-232 port. (Options: 1, 2)
Parity none Sets the parity of the RS-232 port. (Options: none/odd/even)
Time-Out 10 minutes If no input is received from the attached device after this
interval (in minutes), the current session is automatically closed. (Range: 0 - 60 minutes; where 0 indicates disabled.)
Auto Refresh 5 sec. Sets the interval before a console session will auto refresh
the console information, including Spanning Tree Information, Port Configuration, Port Statistics, and RMON Statistics. (Range: 5 - 255 seconds; where 0 indicates disabled.)
33
Using the System Configuration Program
Assigning SNMP
Parameters
Use the SNMP Configuration screen to display and modify parameters for the Simple Network Management Protocol (SNMP). The switch includes an on-board SNMP agent which monitors the status of its hardware, as well as the traffic passing through its ports. A computer attached to the network, called a Network Management Station (NMS), can be used to access this information. Access rights to the on-board agent are controlled by community strings. To communicate with the switch, the NMS must first submit a valid community string for authentication. The options for configuring community strings and related trap functions are described in the following figures and table:
SNMP Configuration
=================
Send Authentication Fail Traps : ENABLED
SNMP Communities ...
IP Trap Managers ...
<APPLY> <OK> <CANCEL>
Use <TAB> or arrow keys to move. <Space> to scroll
options. <Enter> to select.
Name Description
Send Authentication Fail Traps
Issue a trap message to specified IP trap managers whenever authentication of an SNMP request fails. (The default is enabled.)
SNMP Communities Assigns SNMP access based on specified
community strings.
IP Trap Managers Specifies management stations that will
receive authentication failure messages or other trap messages from the switch.
34
AT-S29 Management Software User’s Guide
SNMP Configuration: SNMP Communities
=================
Community Name Access Status
1. public READ ONLY ENABLED
2. private READ/WRITE ENABLED
3. netman READ/WRITE ENABLED
4.
5.
<APPLY> <OK> <CANCEL>
Use <TAB> or arrow keys to move, other keys to make
changes.
<Space> to scroll options.
Configuring Community Names
The following figure and table describe how to configure the community strings authorized for trap management access. Up to 5 community names may be entered.
Parameter Description
Community Name A community entry authorized for trap
Access Management access is restricted to Read
Status Sets administrative status of entry to
management access. Default string: public (read/write Maximum string length: 19 characters
Only or Read/Write.
enabled or disabled.
35
Using the System Configuration Program
Configuring IP Trap Managers
The following figure and table describe how to specify management stations that will receive authentication failure messages or other trap messages from the switch. Up to 5 trap managers may be entered.
SNMP Configuration: IP Trap Managers =====================
IP Address Community Name Status
1. 149.35.19.20 public DISABLED
2.
3.
4.
5.
<APPLY> <OK> <CANCEL>
Use <TAB> or arrow keys to move. <Enter> to select.
<Space> to scroll options.
Parameter Description
IP Address IP address of the trap manager.
Community Name A community specified for trap
management access.
Status Sets administrative status of entry to
enabled or disabled.
36
AT-S29 Management Software User’s Guide
Console Login Configuration
=================
Password Threshold : 3
Lock-out Time (in minutes) : 0
User Type User Name Password
-------------------------------------------
1. ADMIN : admin
2. GUEST guest
3.
4.
5.
<APPLY> <OK> <CANCEL>
Use <TAB> or arrow keys to move. other keys to make
changes.
Console Login
Configuration
Use the Management Setup: Console Login Configuration to restrict management access based on specified user names and passwords, or to set the invalid password threshold and timeout. There are two user types, Administrator and Guest. Only the Administrator has write access for parameters governing the SNMP agent. You should therefore assign a user name and password to the Administrator as soon as possible, and store it in a safe place. (If for some reason your password is lost, or you cannot gain access to the System Configuration Program, contact your Allied Telesyn distributor for assistance.) The parameters shown on this screen are indicated in the following figure and table.
Parameter Default Description
Password 3 Sets the password intrusion threshold which limits the number of
failed logon attempts. (Range: 0~65500)
Lock-out Time 0 The time (in seconds) the management console will be disabled,
due to an excessive number of failed logon attempts. (Range:
Admin
Guest
1. Passwords can consist of up to 11 alphanumeric characters and are not case sensitive.
1
1
name: admin password : null
name: guest password : null
0~65535)
Administrator has access privilege of Read/Write for all screens.
Guest has access privilege of Read Only for all screens.
37
Using the System Configuration Program
Downloading
System Software
Using TFTP Protocol to Download Over the Network
Use the TFTP Download menu to load software updates into the switch. The download file should be an AT-8324SX compressed binary file from Allied Telesyn; otherwise the agent will not accept it. The success of the download operation depends on the accessibility of the TFTP server and the quality of the network connection. After downloading the new software, the agent will automatically restart itself. Parameters shown on this screen are indicated in the following figure and table.
TFTP Download =============
Download Server IP :
Agent Software Upgrade : ENABLED
Download Filename : AT-S29-V1.12 Download Mode : PERMANENT
(Process TFTP Download)
Download status : Complete
<APPLY> <OK> <CANCEL>
Use <TAB> or arrow keys to move. Other keys to make
changes.
<Space> to scroll options.<Enter> to select.
Parameter Description
Download Server IPIP address of a TFTP server.
Agent Software Upgrade
Download
The binary file to download to the agent module.
Filename
Download Mode Downloads to permanent flash ROM.
Process TFTP Download
Issues request to TFTP server to download the specified file.
Note
You can also download firmware using the Web agent or via a direct console connection.
38
AT-S29 Management Software User’s Guide

Configuring the Switch

The Device Control menu is used to set the communication parameters for individual ports and to fine-tune the performance of your switch. Configuration menus are also provided for advanced functions, such as Virtual LANs, port trunking, and port mirroring. Each of the setup screens provided by the configuration menus is described in the following sections.
Device Control Menu ===================
Port Configuration ... Extended Bridge Configuration ... Port Information ... 802.1P Configuration ... Spanning Tree Configuration ... 802.1P VLAN Base Information Spanning Tree Information ... 802.1P Current Table Information Mirror Port Configuration ... 802.1P VLAN Static Table Configuration ... Port Trunking Configuration ... 802.1P VLAN Port Configuration ... IGMP Configuration ... Port GARP Configuration ...
Port GMRP Configuration ...
<OK>
Use <TAB> or arrow keys to move. <Enter> to select.
Parameter Description
Port Configuration Enables any port, enables/disables flow control, and sets
communication mode to auto-negotiation, full- or half-duplex.
Port Information Displays operational status, including link state, flow control method,
and duplex mode.
Spanning Tree Configuration
Enables Spanning Tree Algorithm; also sets parameters for hello time, maximum message age, switch priority, and forward delay; as well as port priority and path cost.
Spanning Tree
Displays a full listing of parameters for Spanning Tree Algorithm.
Information
Mirror Port
Sets the source and target ports mirroring.
Configuration
Port Trunking
Specifies ports to group into aggregate trunks.
Configuration
IGMP Configuration Configures IGMP multicast filtering.
Extended Bridge Configuration
Displays/configures extended bridge capabilities provided by this switch, including support
39
Using the System Configuration Program
Parameter Description
802.1P Configuration Configures default port priorities and queue assignments.
802.1Q VLAN Base Information
802.1Q VLAN Current
Displays basic VLAN information, such as VLAN version number and maximum VLANs supported.
Displays VLAN groups and port members.
Table Information
802.1Q VLAN Static Table Configuration
Configures VLAN groups via static assignments, including settings port members, or restricting ports from being dynamically added to a port by the GVRP protocol.
802.1Q VLAN Port Configuration
Port GARP Configuration
1
Port GMRP Configuration
1. Not implemented in this firmware release.
1
Displays/configures port-specific VLAN settings, including PVID, ingress filtering, and GVRP.
Configures generic attribute settings used in the spanning tree protocol, VLAN registration, multicast filtering.
Configures GMRP multicast filtering.
40
AT-S29 Management Software User’s Guide
Port Configuration: Unit 1 Port 1-12 =====================
Port Type Admin Flow Speed and
Control Duplex
-----------------------------------------------------
1 10/100TX ENABLED ENABLED 10-HALF 2 10/100TX ENABLED DISABLED 100-FULL 3 10/100TX ENABLED ENABLED AUTO 4 10/100TX ENABLED DISABLED AUTO 5 10/100TX ENABLED ENABLED 10-FULL 6 10/100TX ENABLED DISABLED 100-HALF 7 10/100TX ENABLED DISABLED AUTO 8 10/100TX ENABLED ENABLED AUTO 9 10/100TX ENABLED ENABLED AUTO 10 10/100TX ENABLED ENABLED AUTO 11 10/100TX ENABLED ENABLED AUTO 12 10/100TX ENABLED ENABLED AUTO
<APPLY> <OK> <CANCEL> <PREV Unit> <NEXT UNIT> <PREV
PAGE> <NEXT PAGE>
Use <TAB> or arrows keys to move. <Enter> to select.
<Space> to scroll options.
Configuring Port
Parameters
Use the Port Configuration menus to configure any port or module on the switch.
Parameter Default Description
Type Shows port type as:
10/100TX: 10Base-T/100Base-TX 100FX : 100Base-FX 1000SX : 1000Base-SX 1000LX : 1000Base-LX
Admin Enabled Allows you to disable a port due to abnormal behavior (e.g.,
Flow Control Disabled Used to enable or disable flow control. Flow control can eliminate
Speed and Duplex
Auto Used to set the current port speed, duplex mode, and auto-
excessive collisions), and then re-enable it after the problem has been resolved. You may also disable a port for security reasons.
frame loss by "blocking" traffic from end stations or segments connected directly to the switch when its buffers fill. Back pressure is used for half duplex and IEEE 802.3x for full duplex. Note that flow control should not be used if a port is connected to a hub.
negotiation.
Auto-negotiation is not available for 100Base-FX ports.
Note
41
Using the System Configuration Program
Viewing the
Current Port
Configuration
The Port Information screen displays the port type, status, link state, and flow control in use, as well as the communication speed and duplex mode. To change any of the port settings, use the configuration menu. The parameters shown in the following figure and table are for the RJ-45 ports.
Port Information: Unit 1 Port 1-12 ==================
Port Type Operational Link FlowControl Speed and
InUse DuplexInUse
------------------------------------------------------
1. 10/100TX YES DOWN --------- ---------
2. 10/100TX YES DOWN --------- ---------
3. 10/100TX YES UP 802.3x 100-FULL
4. 10/100TX YES DOWN --------- ---------
5. 10/100TX YES DOWN --------- ---------
6. 10/100TX YES UP NONE 100-HALF
7. 10/100TX YES DOWN --------- 100-HALF
8. 10/100TX YES UP 802.3x 100-FULL
9. 10/100TX YES UP 802.3x 100-FULL
10.10/100TX YES UP 802.3x 100-FULL
11.10/100TX YES UP 802.3x 100-FULL
12.10/100TX YES UP 802.3x 100-FULL
<OK> <PREV Unit> <NEXT UNIT> <PREV PAGE> <NEXT PAGE> Use <TAB> or arrows keys to move. <Enter> to select.
<Space> to toggle.
Parameter Description
Type Shows port type as:
10/100TX: 10Base-T / 100Base-TX 100FX: 100Base-FX 1000SX: 1000Base-SX 1000LX: 1000Base-LX
Operational Shows if the port is functioning or not.
Link Indicates if the port has a valid connection to an external device.
FlowControl InUse Shows the flow control type in use. Flow control can eliminate
frame loss by "blocking" traffic from end stations connected directly to the switch. Back pressure is used for half duplex and IEEE
802.3x for full duplex. Note that flow control should not be used if a port is connected to a hub.
Speed and Duplex InUse Displays the current port speed, duplex mode, and if auto-
negotiation is used. Note that auto-negotiation is available only for RJ-45 and Gigabit ports (not 100Base-FX ports.)
42
AT-S29 Management Software User’s Guide
Spanning Tree Configuration: Selection Menu ==============================
STA Bridge Configuration ... STA Port Configuration ...
<APPLY> <OK> <CANCEL>
Use <TAB> or arrows keys to move. <Enter> to select.
Spanning Tree Configuration: Bridge STA Configuration
=============================
Spanning Tree Protocol : ENABLED
Priority : 32768 Hello Time (in seconds) : 2
Max Age (in seconds) : 20
Forward Delay (in seconds): 15
<APPLY> <OK> <CANCEL>
Use <TAB> or arrow keys to move, <Space> to scroll
options, other keys to make changes.
Using the
Spanning Tree
Algorithm
The Spanning Tree Algorithm can be used to detect and disable network loops, and to provide backup links between switches, bridges or routers. This allows the switch to interact with other bridging devices (that is, STA compliant switch, bridge or router) in your network to ensure that only one route exists between any two stations on the network. For a more detailed description of how to use this algorithm, refer to Chapter
4.
Configuring Bridge STA
The following figure and table describe Bridge STA configuration.
43
Using the System Configuration Program
Parameter Default Description
Spanning Tree
Enabled Enable this parameter to participate in an STA compliant network.
Protocol
Priority 32,768 Device priority is used in selecting the root device, root port, and
designated port. The device with the highest priority becomes the STA root device. However, if all devices have the same priority, the device with the lowest MAC address will then become the root device. Enter a value from 0 - 65535. Remember that the lower the numeric value, the higher the priority.
Hello Time 2 Time interval (in seconds) at which the root device transmits a
configuration message. Minimum value: 1 Maximum value: lower of 10 or [(Max. Message Age / 2) -1]
Max (Message) Age
20 The maximum time (in seconds) a device can wait without
receiving a configuration message before attempting to reconfigure. All device ports (except for designated ports) should receive configuration messages at regular intervals. Any port that ages out STA information (provided in the last configuration message) becomes the designated port for the attached LAN. If it is a root port, a new root port is selected from among the device ports attached to the network. The minimum value is the higher of 6 or [2 x (Hello Time + 1)]. The maximum value is the lower of 40 or [2 x (Forward Delay - 1)].
Forward Delay 15 The maximum time (in seconds) the root device will wait before
changing states (i.e., listening to learning to forwarding). This delay is required because every device must receive information about topology changes before it starts to forward frames. In addition, each port needs time to listen for conflicting information that would make it return to a blocking state; otherwise, temporary data loops might result. The maximum value is 30. The minimum value is the higher of 4 or [(Max. Message Age / 2) + 1].
44
AT-S29 Management Software User’s Guide
Spanning Tree Port Configuration: Unit 1 Port 1-12 ==================================
Port Type Priority Cost
---------------------------------------­1 10/100TX 128 5
2 10/100TX 128 19 3 10/100TX 128 19 4 10/100TX 128 19 5 10/100TX 128 19 6 10/100TX 128 19 7 10/100TX 128 19 8 10/100TX 128 19 9 10/100TX 128 19
10 10/100TX 128 19 11 10/100TX 128 19 12 10/100TX 128 19
<APPLY><OK><CANCEL><PREV UNIT><NEXT UNIT><PREV PAGE><NEXT PAGE>
Use <TAB> or arrows keys to move, other keys to make changes
Configuring STA for Ports or Modules
The following figure and table describe STA configuration for ports or modules. (Note that the Spanning Tree Configuration screen for the expansion slots also indicates module type.)
Parameter Default Description
Type Shows port type as 10/100TX, 100FX, 1000SX or 1000LX.
Priority 128 Defines the priority for the use of a port in the STA algorithm. If the
path cost for all ports on a switch are the same, the port with the highest priority (i.e., lowest value) will be configured as an active link in the spanning tree. Where more than one port is assigned the highest priority, the port with lowest numeric identifier will be enabled. The range is 0 - 255.
(Path) Cost 100/19/4 This parameter is used by the STA algorithm to determine the best
path between devices. Therefore, lower values should be assigned to ports attached to faster media, and higher values assigned to ports with slower media. The default and recommended range is: Standard Ethernet: 100 (50~600) Fast Ethernet: 19 (10~60) Gigabit Ethernet: 4 (3~10) The full range is 0 - 65535. Note: Path cost takes precedence over port priority.
45
Using the System Configuration Program
Viewing the
Current Spanning
Tree
Configuration
The Spanning Tree Information screen displays a summary of the STA information for the overall bridge or for a specific port or module. To make any changes to the parameters for the Spanning Tree, use the Spanning Tree Configuration menu.
Spanning Tree Information: Selection Menu ============================
STA Bridge Information ...
STA Port Information ...
<OK>
Use <TAB> or arrow keys to move. <Enter> to select.
Displaying the Current Bridge STA
The parameters shown in the following figure and table describe the current Bridge STA Information.
Spanning Tree Information: Bridge STA Information ============================
Priority : 65535 Hello Time (in seconds) : 2 Max Age (in seconds) : 20 Forward Delay (in seconds) : 5 Hold Time (in seconds) : 1 Designated Root : 128.0000E8123456 Root Cost : 5 Root Port : 1 Reconfig Counts : 3 Topology Up Time : 0 day, 1 hr, 2min, 34 sec
<OK>
Use <TAB> or arrow keys to move. <Enter> to select.
46
AT-S29 Management Software User’s Guide
Parameter Description
Priority Device priority is used in selecting the root
device, root port, and designated port. The device with the highest priority becomes the STA root device. However, if all devices have the same priority, the device with the lowest MAC address will then become the root device.
Hello Time The time interval (in seconds) at which the root
device transmits a configuration message.
Max Age The maximum time (in seconds) a device can wait
without receiving a configuration message before attempting to reconfigure.
Forward Delay The maximum time (in seconds) the root device
will wait before changing states (i.e., listening to learning to forwarding).
Hold Time The minimum interval between the transmission
of consecutive Configuration BPDUs.
Designated Root The priority and MAC address of the device in the
spanning tree that this switch has accepted as the root device.
Root Cost The path cost from the root port on this switch to
the root device.
Root Port The number of the port on this switch that is
closest to the root. This switch communicates with the root device through this port. If there is no root port, then this switch has been accepted as the root device of the spanning tree network.
Reconfig Counts The number of times the spanning tree has been
reconfigured.
Topology Up Time The time since the spanning tree was last
reconfigured.
47
Using the System Configuration Program
Displaying the Current STA for Ports or Modules
The parameters shown in the following figure and table are for port or module STA Information (Port 1-12, Port 13-24, Expansion Slot 1 or Expansion Slot 2).
Port Type Status Designated Designated Designated
------------------------------------------------------------
1. 10/100TX FORWARDING 0 128.0000f4123456 128.3
2. 10/100TX FORWARDING 19 32768.0000f4123457128.1
3. 10/100TX FORWARDING 19 32768.0000f4123458128.1
4. 10/100TX FORWARDING 19 32768.0000f4123459128.5
5. 10/100TX FORWARDING 19 32768.0000f412345a128.6
6. 10/100TX LISTENING 19 32768.0000f412345b128.3
7. 10/100TX LEARNING 19 32768.0000f4123456128.3
8. 10/100TX FORWARDING 19 32768.0000f4123457128.3
9. 10/100TX FORWARDING 19 32768.0000f4123458128.4
10.10/100TX FORWARDING 19 32768.0000f4123459128.5
11.10/100TX FORWARDING 19 32768.0000f4123459128.5
12.10/100TX FORWARDING 19 32768.0000f4123459128.5
Spanning Tree Information: Unit 1 Port 1-12 ============================
Cost Bridge Port
<OK> <PREV Unit> <NEXT UNIT> <PREV PAGE> <NEXT PAGE> Use <TAB> or arrows keys to move. <Enter> to select.
48
AT-S29 Management Software User’s Guide
Parameter Description
Type Shows port type as:
10/100TX: 10Base-T / 100Base-TX 100FX: 100Base-FX 1000SX: 1000Base-SX 1000LX: 1000Base-LX
Status Displays the current state of this port within the
spanning tree:
Disabled:
Port has been disabled by the user or has
failed diagnostics
Blocked:
Port receives STA configuration messages,
but does not forward packets.
Listening
: Port will leave blocking state due to topology change, starts transmitting configuration messages, but does not yet forward packets.
Learning
: Has transmitted configuration messages for an interval set by the Forward Delay parameter without receiving contradictory information. Port address table is cleared, and the port begins learning addresses.
Forwarding
: The port forwards packets, and continues learning addresses. The rules defining port status are: A port on a network segment with no other STA compliant bridging device is always forwarding. If two ports of a switch are connected to the same segment and there is no other STA device attached to this segment, the port with the smaller ID forwards packets and the other is blocked. All ports are blocked when the switch is booted, then some of them change state to listening, to learning, and then to forwarding.
Designated Cost
Designated Bridge (ID)
Designated Port (ID)
The cost for a packet to travel from this port to the root in the current spanning tree configuration. The slower the media, the higher the cost.
The priority and MAC address of the device through which this port must communicate to reach the root of the spanning tree.
The priority and port on the designated bridging device through which this switch must communicate with the root of the spanning tree.
49
Using the System Configuration Program
Using a Mirror
Port for Analysis
You can mirror traffic from any source port to a target port for real-time analysis. You cana then attach a logic analyzer or RMON probe to the target port and study the traffic crossing the source port in a completely unobtrusive manner. When mirroring port traffic, not that the target port must be included in the same VLAN as the source port.
You can use the Mirror Port Configuration screen to designate a single port pair for mirroring as shown below:
Mirror Port Configuration =========================
Mirror Source Port : Unit 1
: Port 1
Mirror Target Port : Unit 1
: Port 2
Status : DISABLED
<APPLY> <OK> <CANCEL>
Use <TAB> or arrow keys to move. <Enter> to select.
Parameter Description
Mirror Source
The port whose traffic will be monitored.
Port
Mirror Target Port
The port that will “duplicate” or “mirror” all the traffic happening on the monitored port.
Status Enables or disables the mirror function.
50
AT-S29 Management Software User’s Guide
Configuring Port
Trunks
Port trunks can be used to increase the bandwidth of a network connection or to ensure fault recovery. You can configure up to four trunk connections (combining 2 to 4 ports into a fat pipe) between any two AT-8324SX switches. However, before making any physical connections between devices, us the Trunk Configuration menu to specify the trunk on the devices at both ends. When using a port trunk, note that:
The ports used in a trunk must all be of the same media type (RJ­45, 100 Mbps fiber, 1000 Mbps fiber). The ports that can be assigned to the same trunk have certain other restrictions as described later in this section.
Ports can only be assigned to one trunk.
The ports at both ends of a connection must be configured /as trunk ports.
The ports at both ends of a trunk must be configured in an identical manner, including speed, duplex mode, and VLAN assignments.
The communication mode must be configured identically at both ends of the trunk.
None of the ports in a trunk can be configured as a mirror source port or a mirror target port.
All the ports in a trunk have to be treated as a whole when moved from/to added, or deleted from a VLAN.
The Spanning Tree Algorithm will treat all the ports in a trunk as a whole.
Enable the trunk prior to connecting any cable between the switches to avoid creating a loop.
Disconnect all trunk port cables or disable the trunk ports before removing a port trunk to avoid creating a loop.
51
Using the System Configuration Program
You can use the Port Trunking Configuration screen to set up port trunks as shown below:
Trunk ID Status Member List
------- ------ ----------------------------------------
-- ----- Unit : - Unit : - Unit : - Unit : -
-- ----- Port : - Port : - Port : - Port : -
-- ----- Unit : - Unit : - Unit : - Unit : -
-- ----- Port : - Port : - Port : - Port : -
-- ----- Unit : - Unit : - Unit : - Unit : -
-- ----- Port : - Port : - Port : - Port : -
Trunk ID : 1 Trunk ID : 1 Member Unit : 1
Port Trunking Configuration ===========================
1 2 3 4
Member Port : 1
[Show] [More] [Add] [Delete] [Enable] [Disable]
<OK>
Use <TAB> or arrow keys to move, other keys to make changes.
Parameter Description
Trunk ID Configure up to four trunks per switch.
Unit Specifies a switch unit in the stack (1 to 4).
Port Select from 2 to 4 ports per trunk.
[Show] Displays trunk settings, where the first trunk listed is specified by “Trunk
ID.”
[More] Scrolls through the list of configured trunks.
[Enable] [Disable] Enables/disables the selected trunk.
[Add] [Delete] Adds/deletes the port specified by Trunk ID / Member Unit / Member Port.
52
AT-S29 Management Software User’s Guide
The RJ-45 ports used for each trunk must all be on the same internal switch chip. The port groups permitted include:
Group 1: 1, 2, 3, 4 and 13, 14, 15, 16
Group 2: 5, 6, 7, 8 and 17, 18, 19, 20
Group 3: 9, 10, 11, 12 and 21, 22, 23, 24
The 100Base-FX fiber optic ports used for one side of a trunk must all be on the same module. However, the 1000Base-SX and 1000Base-LX ports used for one side of a trunk may be on any switch in the stack, or both on the same switch if used as a standalone switch.
For example, when using Gigabit ports to form a trunk within a stack, the Gigabit ports will all be at Port 25. In this case, you could specify a trunk group consisting of:
(Unit1-Port25, Unit2-Port25, Unit3-Port25, Unit4-Port25)
or two trunks consisting of:
IGMP Multicast
Filtering
(Unit1-Port25, Unit2-Port25) and (Unit3-Port25, Unit4-Port25)
Multicasting is used to support real-time applications such as video conferencing or streaming audio. A multicast server does not have to establish a separate connection with each client. It merely broadcasts its services to the network, and any hosts which want to receive the multicast register with their local multicast switch/router. Although this approach reduces the network overhead required by a multicast server, the broadcast traffic must be carefully pruned at every multicast server/router it passed through to ensure that traffic is only passed on the hosts which subscribe to this service.
This switch uses IGMP (Internet Group Management Protocol) to query for any attached hosts who want to receive a specific multicast service. The switch looks up the IP Multicast Group used for this service and adds any port which received a similar request to that group. It then propagates the service request on to any neighboring multicast switch/router to ensure that it will continue to receive the multicast service.
53
Using the System Configuration Program
Configuring IGMP
This protocol allows a host to inform its local switch/router that it wants to receive transmissions addressed to a specific multicast group. You can use the IGMP Configuration screen to configure multicast filtering shown below:
IGMP Configuration ==================
IGMP Status : ENABLED
Act as IGMP Querier : DISABLED
IGMP Query Count : 5
IGMP Report Delay (Minutes) : 5
<APPLY> <OK> <CANCEL>
Use <TAB> or arrow keys to move. <Space> to scroll
option.
Other keys to make changes.
Parameter Description
IGMP Status If enabled, the switch will monitor network traffic to determine
which hosts want to receive multicast traffic.
ACT as IGMP Querier If enabled, the switch can serve as the “querier,” which is
responsible for asking hosts if they want to receive multicast traffic. (Not available for the current firmware release.)
IGMP Query Count The maximum number of queries issued for which there has been
no response before the switch takes action to solicit reports.
IGMP Report Delay The time (in minutes) between receiving an IGMP Report for an IP
multicast address on a port before the switch sends an IGMP Query out that port and removes the entry from its list.
54
Note
The default values are indicated in the sample screen.
AT-S29 Management Software User’s Guide
Configuring
Bridge MIB
Extensions
The Bridge MIB includes extensions for managed devices that support Traffic Classes, Multicast Filtering and Virtual LANs. To configure these extensions, use the Extended Bridge Configuration screen as shown below:
Extended Bridge Configuration
============================
Bridge Capability : (Read Only)
Extended Multicast Filtering Services: NO Traffic Classes : YES Static Entry Individual Port : YES VLAN Learning : IVL Configurable PVID Tagging : YES Local VLAN Capable : NO
Bridge Settings :
Traffic Class : FALSE GMRP : DISABLED GVRP : DISABLED
<APPLY> <OK> <CANCEL>
Use <TAB> or arrow keys to move. <Space> to scroll
option.
Parameter Description
Bridge Capability
Extended Multicast Filtering Services
Enables filtering of individual multicast addresses based on GMRP (GARP Multicast Registration Protocol). Note that this function is not available for the current firmware release.
Traffic Classes Provides mapping of user priorities to multiple traffic classes. (Refer to
802.1p Configuration.)
Static Entry Individual Port
Enables static filtering for unicast and multicast addresses. (Refer to the Network Monitor Menu / Static Unicast Address Table Configuration and Static Multicast Address Table Configuration.)
VLAN Learning This switch uses Independent VLAN Learning (IVL), whereby each port
maintains its own VLAN filtering database.
Configurable PVID Tagging
Allows you to override the default PVID setting (Port VLAN ID used in frame tags) and its egress status (VLAN-Tagged or Untagged) on each port. (Refer to 802.1Q VLAN Port Configuration.
Local VLAN Capable This switch does not support multiple local bridges (that is, multiple
Spanning Trees).
55
Using the System Configuration Program
Parameter Description
Bridge Settings
Traffic Class
GMRP
1
GVRP
1. Not available in this firmware release.
1
1
Configuring
Traffic Classes
Multiple traffic classes are supported by this switch as indicated under Bridge Capabilities. However, you can disable this function by setting this parameter to False. Note that this function is not available for the current firmware release.
GARP Multicast Registration Protocol (GMRP) allows network devices to register endstations with multicast groups. Note that this function is not available for the current firmware release.
The Internet Group Management Protocol (IGMP) is currently used by this switch to provide automatic multicast filtering.
GARP VLAN Registration Protocol (GVRP) defines a way for switches to exchange VLAN information in order to register necessary VLAN members on ports across the network. This function should be enabled to permit VLAN groups that extend beyond the local switch.
IEEE 802.1p defines up to eight separate traffic classes. This switch supports Quality of Service (QoS) by using two priority queues, with weighted fair queuing for each port. You can use the 802.1P Configuration menu to configure the default priority for each port, or to display the mapping for the traffic classes as described in the following sections:
802.1P Configuration : Selection Menu ====================================
802.1P Port Priority Configuration ...
802.1P Port Traffic Class Information ...
<OK>
Use <TAB> or arrow keys to move. <Enter> to select.
56
AT-S29 Management Software User’s Guide
Port Priority Configuration
The default priority for all ingress ports is zero. Therefore, any inbound frames that do not have priority tags will be placed in the low priority outlet queue. Default priority is only used to determine the output queue for the current port; no priority tag is actually added to the frame. You can use the 802.1P Port Priority Configuration menu to adjust default priority for any port as shown below:
802.1P Port Priority Configuration : Unit 1 Port 1 - 12 =======================================
Port Default Ingress Number of Egress
User Priority Traffic Class
-----------------------------------------------------
10 2 20 2 30 2 40 2 50 2 60 2 70 2 80 2 90 2 10 0 2 11 0 2 12 0 2
<APPLY> <OK> <CANCEL> <PREV Unit> <NEXT UNIT> <PREV
PAGE> <NEXT PAGE>
Use <TAB> or arrows keys to move, other keys to make
changes.
Parameter Description
Port Numeric identifier for switch port.
Default Ingress User Priority
Default priority can be set to any value from 0-7, where 0-3 specifies the low priority queue and 4­7 specifies the high priority queue.
Number of Egress Traffic Classes
Indicates that this switch supports two priority output queues.
57
Using the System Configuration Program
802.1p Port Traffic Class Information
This switch provides two priority levels with weighted fair queuing for port egress. This means that any frames with a default or user priority from 0-3 are sent to the low priority queue “0” while those from 4-7 are sent to the high priority queue “1” as shown in the following screen:
802.1P Port Priority Configuration : Unit 1 Port 1 - 12 =======================================
Port User Priority
01234567
-------------------------------------------
10 0001111 10 0001111 10 0001111 10 0001111 10 0001111 10 0001111 10 0001111 10 0001111 10 0001111
Configuring
Virtual LANs
<OK> <PREV UNIT> <NEXT UNIT> <PREV PAGE> <NEXT PAGE> Use <TAB> or arrows keys to move, other keys to make
changes.
Parameter Description
Port Numeric identifier for switch port.
User Priority Shows that user priorities 0-3 specify the low
priority queue and 4-7 specify the high priority queue.
Use the VLAN Configuration menu to assign any port on the switch to any of up to 16 LAN groups. In conventional networks with routers, broadcast traffic is split up into separate domains. Switches do not inherently support broadcast domains. This can lead to broadcast storms in large networks that handle a lot of IPX traffic. By using IEEE
802.1Q compliant VLANs and GARP VLAN Registration Protocol, you can organize any group of network nodes into separate broadcast domains, confining broadcast traffic to the originating group. This also provides a more secure and much cleaner network environment.
58
For a more detailed description of how to use VLANs, see Chapter 4. The VLAN configuration screens are described in the following sections.
AT-S29 Management Software User’s Guide
802.1Q VLAN Base Information
The 802.1Q VLAN Base Information screen displays basic information on the VLAN type support by this switch.
802.1Q VLAN Base Information
=============================
VLAN Version Number : 1
MAX VLAN ID : 2048
MAX Supported VLANs : 16
Current Number of 802.1Q VLANs Configured : 1
APPLY> <OK> <CANCEL> <PREV Unit> <NEXT UNIT> <PREV PAGE>
<NEXT PAGE>
Use <TAB> or arrows keys to move, other keys to make
changes.
Parameter Description
VLAN Version Number
The VLAN version used by this switch as specified in the IEEE 802.1Q standard.
MAX VLAN ID Maximum VLAN ID recognized by this switch.
MAX Supported VLANs
Current Number of VLANs Configured
Maximum number of VLANs that can be configured on this switch.
The number of VLANs currently configured on this switch.
802.1Q VLAN Current Table Information
This screen shows the current port members of each VLAN and whether or not the port supports VLAN tagging. Ports assigned to a large VLAN group that crosses several switches should use VLAN tagging. However, if you just want to create a small port-based VLAN for one or two switches, you can assign ports to the same untagged VLAN. The current configuration is shown in the following screen.
59
Using the System Configuration Program
Unit Current Egress Ports Current Untagged Ports
1. 111111111111 111111111111 1---111111111111 111111111111 1---
2. ------------ ------------ ---------------- ------------ ----
3. ------------ ------------ ---------------- ------------ ----
4. ------------ ------------ ---------------- ------------ ----
802.1Q VLAN Current Table Information
======================================
Deleted VLAN Entry Counts : 0
VID Creation time Status
-------------------------------------------------------
1 0 (0 day 0 hr 0 sec) Dynamic GVRP
Sorted by VID : 1
[Show] [More]
Use <TAB> or arrows keys to move. <Enter> to select.
Port 1 Port 13
<OK>
Port 25
Parameter Description
Deleted VLAN Entry Counts
The number of times a VLAN entry has been deleted from this table.
VID The ID for the VLAN currently displayed.
Creation Time The value of sysUpTime (System Up Time) when this VLAN was
created.
Status Shows how this VLAN was added to the switch:
Dynamic GVRP: Automatically learned via GVRP. Permanent: Added as a static entry.
Unit Stack unit.
Current Egress Ports Shows the ports which have been added to the displayed VLAN
group, where "1" indicates that a port is a member and "O" that it is not.
Current Untagged Ports If a port has been added to the displayed VLAN (see Current Egress
Ports), its entry in this field will be "1" if the port is untagged or "O" if tagged.
[Show] Displays the members for the VLAN indicated by the “Sorted by
VID" field.
[More] Displays any subsequent VLANs if configured.
60
AT-S29 Management Software User’s Guide
802.1Q VLAN Static Table Information
Use this screen to create a new VLAN or modify the settings for an existing VLAN. You can add/delete port members for a VLAN from any unit in the stack, or prevent a port from being automatically added to a VLAN via the GVRP protocol. (Also, note that all ports can only belong to one untagged VLAN. This is set to VLAN 1 by default, but can be changed via the 802. 1 Q VLAN Port Configuration screen.)
802.1Q VLAN Static Table Information
======================================
VID VLAN Name Status
--------------------------------------
Unit Egress Ports Forbidden Egress Ports
1. 111111111111 111111111111 1---000000000000 000000000000 0---
2. ------------ ------------ ---------------- ------------ ----
3. ------------ ------------ ---------------- ------------ ----
4. ------------ ------------ ---------------- ------------ ----
VID : 0 [Show] [More] [New]
<APPLY> <OK> <CANCEL>
Use <TAB> or arrows keys to move, other keys to make changes.
<Enter> to select.
Parameter Description
VID The ID for the VLAN currently displayed.
Range: 1-2048
VLAN Name A user-specified symbolic name for this VLAN.
String length: Up to 8 alphanumeric characters.
Status Sets the current editing status for this VLAN as:
Not in Service, Destroy, or Active.
Unit Stack unit.
Egress Ports Set the entry for any port in this field to "1" to add it to the displayed VLAN,
or "O” to remove it from the VLAN.
Forbidden Egress
Prevents a port from being automatically added to this VLAN via GVRP.
Ports
[Show] Displays settings for the specified VLAN.
[More] Displays consecutively numbered VLANS.
[New] Sets up the screen for configuring a new VLAN.
61
Using the System Configuration Program
Using the System Configuration Program
For example, the following screen displays settings for VLAN 2, which includes tagged ports 1-6, and forbidden port 12. (Note that the dashed lines show that there are no switch units in this system other than Unit
1.)
Unit Egress Ports Forbidden Egress Ports
1. 111111000000 000000000000 0---000000000001 000000000000 0---
2. ------------ ------------ ---------------- ------------ ----
3. ------------ ------------ ---------------- ------------ ----
4. ------------ ------------ ---------------- ------------ ----
802.1Q VLAN Static Table Information
======================================
VID VLAN Name Row Status
-------------------------------------­2 RD Active
VID : 2 [Show] [More] [New]
<APPLY> <OK> <CANCEL>
Use <TAB> or arrows keys to move, other keys to make changes.
<Enter> to select.
62
AT-S29 Management Software User’s Guide
802.1Q VLAN Port Configuration
Use this screen to configure port-specific settings for IEEE 802.lQ VLAN features.
802.lQ VLAN Port Configuration : Unit 1 Port 1 - 12 =================================================
Port PVID Acceptable Ingress GVRP GVRP Failed GVRP Last
Frame Type Filtering Status Registrations PDU Origin
--------------------------------------------------------------------
1 1 All FALSE DISABLED 000-00-00-00-00-00 2 1 All FALSE DISABLED 000-00-00-00-00-00 3 1 All FALSE DISABLED 000-00-00-00-00-00 4 1 All FALSE DISABLED 000-00-00-00-00-00 5 1 All FALSE DISABLED 000-00-00-00-00-00 6 1 All FALSE DISABLED 000-00-00-00-00-00 7 1 All FALSE DISABLED 000-00-00-00-00-00 8 1 All FALSE DISABLED 000-00-00-00-00-00 9 1 All FALSE DISABLED 000-00-00-00-00-00 101 All FALSE DISABLED 000-00-00-00-00-00 111 All FALSE DISABLED 000-00-00-00-00-00 121 All FALSE DTSABLED 000-00-00-00-00-00
<APPLY> <OK> <CANCEL> <PREV UNIT> <NEXT UNIT> <PREV PAGE> <NEXT PAGE>
Use <TAB> or arrow keys to move, <Space> to scroll options
Parameter Description
PVID The VLAN ID assigned to untagged frames received on this port. Use the
PVID to assign ports to the same untagged VLAN.
Acceptable Frame Type1
2
This switch accepts “All" frame types, including VLAN tagged or VLAN untagged frames. Note that all VLAN untagged frames received on this port are assigned to the PVID for this port.
1
Ingress Filtering
If set to "True," incoming frames for VLANs which do not include this port in their member set will be discarded at the inbound port.
GVRP Status Enables or disables GVRP for this port. When disabled, any GVRP packets
received on this port will be discarded and no GVRP registrations will be propagated from other ports. Note that GVRP must be enabled for the switch before this setting can take effect. (See Device Control Menu / Extended Bridge Configuration.)
GVRP Failed
The total number of failed GVRP registrations, for any reason, on this port.
Registrations
GVRP Last PDU
The Source MAC Address of the last GVRP message received on this port.
Origin
1. This control does not affect VLAN independent BPDU frames, such as GVRP or STP. However, it does affect VLAN dependent BPDU frames, such as GMRP.
2. Not implemented in this firmware release.
63
Using the System Configuration Program

Monitoring the Switch

The Network Monitor Menu provides access to port statistics, RMON statistics, IP multicast addresses, and the static (unicast) address table. Each of the screens provided by these menus is described in the following sections.
Port Statistics ... RMON Statistics ... Unicast Address Table ... Multicast Address Registration Table ... IP Multicast Registration Table ... Static Unicast Address Table Configuration ... Static Multicast Address Table Configuration ...
Use <TAB> or arrows keys to move. <Enter> to select.
Network Monitor Menu ====================
<OK>
Parameter Description
Port Statistics Displays statistics on network traffic passing through
the selected port.
RMON Statistics Displays detailed statistical information for the selected
port such as packet type and frame size counters.
Unicast Address Table
Multicast Address Registration Table
IP Multicast Registration Table
Static Unicast Address Table
Provides full listing of all unicast addresses stored in the switch, as well as sort, search and clear functions.
Displays the ports that belong to each GMRP Muticast
1
group.
Displays the ports that belong to each IP Muticast group.
Allows you to display or configure static unicast addresses.
Configuration
Static Multicast Address Table Configuration
1. Not implemented in this firmware release.
1
Allows you to display or configure static GMRP multicast addresses.
64
AT-S29 Management Software User’s Guide
Displaying Port
Statistics
EtherLike Counter:
Alignment Errors :0 Late Collisions :0 FCS Errors :0 Excessive Collisions :0 Single Collision Frames :0 Internal MAC Transmit Errors :O Multiple Collision Frames:O Carrier Sense Errors :0 SQE Test Errors :0 Frames Too Long :0 Deferred Transmissions :0 Internal MAC Receive Errors :0
Use the Port Statistics menu to display key statistics for each port. Overall statistics on the traffic passing through each port are displayed. This information can be used to identify potential problems with the switch (such as a faulty port or unusually heavy loading).
Select the required stack unit, and port or module. The statistics displayed are indicated in the following figure and table.
Port Statistics : Unit 1 Port I
=============================
[Refresh Counters] [Reset Counters]
<OK> <PREV UNIT> <NEXT UNIT> <PREV PORT> <NEXT PORT>
Use <TAB> or arrow keys to move. <Enter> to select.
Parameter Description
Alignment Errors For 10 Mbps ports, this counter records alignment errors (mis-
synchronized data packets). For 100Base-TX ports, this counter records the sum of alignment errors and code errors (frames received with rxerror signal).
FCS Errors The number of frames received that are an integral number of octets
in length but do not pass the FCS check.
1
Single Collision Frames
The number of successfully transmitted frames for which transmission is inhibited by exactly one collision.
Multiple Collision Frames
SQE Test Errors
1
1
A count of successfully transmitted frames for which transmission is inhibited by more that one collision.
A count of times that the SQE TEST ERROR message is generated by the PLS sublayer.
Deferred Transmissions1A count of frames for which the first transmission attempt on a
particular interface is delayed because the medium was busy.
65
Using the System Configuration Program
Parameter Description
Late Collisions The number of times that a collision is detected later than 512 bit-
times into the transmission of a packet.
Excessive Collisions
1
The number of frames for which transmission failed due to excessive collisions.
Internal Mac Transmit
1
Errors
Carder Sense Errors
1
The number of frames for which transmission failed due to an internal MAC sublayer transmit error.
The number of times that the carrier sense condition was lost or never asserted when attempting to transmit a frame.
Frames Too Long The number of frames received that exceed the maximum permitted
frame size.
Internal Mac Receive
1
Errors
1. The reported values will always be zero because these statistics are not supported by the internal chip set.
Displaying
RMON Statistics
The number of frames for which reception failed due to an internal MAC sublayer receive error.
Use the RMON Statistics screen to display key statistics for each port or media module from RMON group 1. (RMON groups 2, 3 and 9 can only be accessed using SNMP management software.) The following screen displays overall statistics on traffic passing through each port. RMON statistics provides access to a broad range of statistics, including a total count of different frame types passing through each port. Values displayed have been accumulated since the last system reboot.
RMON Statistics: Unit I Port 1
================
66
Drop Events :0 Jabbers :0 Received Bytes :199299 Collisions :0 Received Frames :15746 64 Byte Frames :37837 Broadcast Frames :3249 65-127 Byte Frames :674356 Multicast Fr=es :0 128-255 Byte Frames :45430 CRC/Alignment Errors:0 256-511 Byte Frames :20447 Undersize Frames :0 512-1023 Byte Frames :3740 Oversize Frames :0 1024_1518 Byte Frames :35696 Fragments :0
(Refresh Statistics] [Reset Counters]
<OK> <PREV UNIT> <NFXT UNIT> <PREV PORT> <NEXT PORT>
Use <TAB> or arrow keys to move. <Enter> to select.
AT-S29 Management Software User’s Guide
Parameter Description
Drop Events The total number of events in which packets were dropped by the probe
due to lack of resources.
Received Bytes Total number of bytes of data received on the network. This statistic can be
used as a reasonable indication of Ethernet utilization.
Received Frames The total number of frames (bad, broadcast and multicast) received.
Broadcast Frames The total number of good frames received that were directed to the
broadcast address. Note that this does not include multicast packets.
Multicast Frames The total number of good frames received that were directed to this
multicast address.
CRC/Alignment Errors
For 1OMbs ports, the counter records CRC/alignment errors (FCS or alignment errors). For 10OMbs ports, the counter records the sum of CRC/ alignment errors and code errors (frame received with rxerror signal).
Undersize Frames The total number of frames received that were less than 64 octets long
(excluding framing bits, but including FCS octets) and were otherwise well formed.
Oversize Frames The total number of frames received that were longer than 1518 octets
(excluding framing bits, but including FCS octets) and were otherwise well formed.
Fragments The total number of frames received that were less than 64 octets in length
(excluding framing bits, but including FCS octets) and had either an FCS or alignment error.
Jabbers The total number of frames received that were longer than 1518 octets
(excluding framing bits, but including FCS octets), and had either an FCS or alignment error.
Collisions The best estimate of the total number of collisions on this Ethernet
segment.
64 Byte Frames The total number of frames (including bad packets) received and
transmitted that were 64 octets in length (excluding framing bits but including FCS octets),
65-127 Byte Frames
128-255 Byte Frames
1024-1518 Byte Frames
The total number of frames (including bad packets) received and transmitted that were between 65 and 127 octets in length inclusive (excluding framing bits but including FCS octets).
The total number of packets (including bad packets) received and transmitted that were between 128 and 255 octets in length inclusive (excluding framing bits but including FCS octets).
The total number of packets (including bad packets) received and transmitted that were between 1024 and 1518 octets in length inclusive (excluding framing bits but including FCS octets).
67
Using the System Configuration Program
Displaying the
Unicast Address
Table
The Address Table contains the MAC addresses and VLAN identifier associated with each port (that is, the source port associated with the address and VLAN), sorted by MAC address or VLAN ID. You can search for a specific address, clear the entire address table, or information associated with a specific address, or set the aging time for deleting inactive entries. The information displayed in the Address Table is indicated in the following figure and table.
Unicast Address Table
===================
Aging Time : 300 Dynamic Counts : 0 Static Counts : 0
MAC VID Unit Port Status MAC VID Unit PortStatus
----------------------------------------------------------------------------
00-00-00-F7-18-78 1 1 1 D 00-00-E8-F7-18-78 1 1 1 D 00-00-65-02-85-73 1 1 1 D 00-00-E8-02-85-73 1 1 1 D 00-00-C0-01-2B-5C 1 1 1 D 00-00-E8-02-85-73 1 1 1 D 00-00-E2-01-40-C3 1 1 1 D 00-00-E8-02-85-73 1 1 1 D 00-00-E2-22-0F-FE 1 1 1 D 00-00-E8-02-85-73 1 1 1 D 00-00-E8-22-10-11 1 1 1 D 00-00-E8-02-85-73 1 1 1 D 00-00-E8-22-38-98 1 1 1 D 00-00-E8-02-85-73 1 1 1 D 00-00-E8-10-69-CD 1 1 1 D 00-00-E8-02-85-73 1 1 1 D
Sorted by : MAC + VID Cleared by : MAC + VID VLAN ID : 1 VLAN ID : 1 MAC : 00-00-00-00-00-00 MAC : 00-00-00-00-00-00 [Show] [More] [Clear] [Clear All]
<APPLY> <OK> <CANCEL>
Use <TAB> or arrow keys to move, other keys to make changes.
<Space> to scroll options. <Enter> to select.
Parameter Description
Address Table Time-out period in seconds for aging out.
Aging Time Dynamically learned forwarding information. Range: 10 - 412 seconds
Default: 300 secs.
Dynamic Counts Number of dynamically learned addresses.
Static Counts Number of statically configured addresses.
MAC The MAC address of a node.
VID The VLAN(s) associated with this address or port.
Unit Switch unit in the stack (1~4).
Port The port whose address table includes this MAC address.
68
AT-S29 Management Software User’s Guide
Parameter Description
Status Indicates address status as:
D
: dynamically learned, or
P
: fixed permanent.y by SNMP network management software.
[Show] Displays the address table based on specified VLAN ID, and sorted by
primary key MAC or VID.
[Clear] Clears the specified MAC address.
[Clear All] Clears all MAC addresses from the table.
69
Using the System Configuration Program
Displaying the IP
Multicast
Registration
Use the IP Multicast Registration Table to display all the multicast groups active on this switch, including multicast IP addresses and the corresponding VLAN ID.
Table
IP Multicast Registration Table
==============================
VID Multicast IP Unit Dynamic Port Lists (Learned by IGMP Only)
----------------------------------------------------------------------------
1 225.1.1.l 1. 000000001100 110000000000 0---
2. 000000001100 110000000000 0---
3. 000000001100 110000000000 0---
4. 000000001100 110000000000 0---
5 225.1.1.2 1. 000000001100 110000000000 0---
2. 000000001100 110000000000 0---
3. 000000001100 110000000000 0---
4. 000000001100 110000000000 0---
Sorted by : VID + Multicast IP VID : 1 Multicast IP : [Show] [More]
<OK>
Use <TAB> or arrow keys to move, other keys to make changes.
<Enter> to select.
Parameter Description
VID VLAN ID assigned to this multicast group.
Multicast IP IP address for specific multicast services.
Unit Stack unit.
Dynamic Port Lists The switch ports dynamically registered for the
indicated multicast service via IGMP.
[Show] Displays the address table sorted on VID and then
Multicast IP.
[More] Scrolls through the entries in the address table.
70
AT-S29 Management Software User’s Guide
Configuring
Static Unicast
Addresses
VID MAC Address Unit Port Status
--------------------------------------------------------------­1 00-30-84-18-43-12 1 1 Permanent
Sorted by : VID + MAC VID : 1 MAC : 00-00-00-00-00-00
VID : 1 Unit : 1 Port : 1 MAC : 00-00-00-00-00-00 Status : Permanent
[Show) [More] [Set]
Use <TAB> or arrow keys to move, other keys to make changes.
Use the Static Unicast Address Table Configuration screen to manually configure host MAC addresses in the unicast table. You can use this screen to associate a MAC address with a specific VLAN ID and switch port as shown below.
Static Unicast Address Table Configuration
===========================================
<OK>
<Space> to scroll options.
Parameter Description
VID The VLAN group this port is assigned to.
MAC Address The MAC address of a host device attached to this
switch.
Unit The switch unit the host device is attached to.
Port The port the host device is attached to.
Status The status for an entry can be set to:
Permanent
: This entry is currently in use and will
remain so after the next reset of the switch.
DeleteOnReset
: This entry is currently in use and
will remain so until the next reset.
Invalid DeleteOnTimeOut
: Removes the corresponding entry.
: This entry is currently in use
and will remain so until it is aged out.
Other
: This entry is currently in use but the conditions under which it will remain so differ from the preceding values.
71
Using the System Configuration Program
Parameter Description
[Show] Displays the static address table sorted on VID as the
primary key and MAC address as secondary key.
[More] Scrolls through entries in the static address table.
[Set] Adds the specified entry to the static address table,
such as shown in the following example:
VID : 1 MAC : 00-30-84-18-34-22 Unit : 1 Port : 1 Status : Permanent
72

Resetting the System

System Restart Menu
====================
Restart Option :
POST : YES Reload Factory Defaults : YES Keep IP Setting : YES Keep User Authentication : YES
[Restart]
<APPLY> <OK> <CANCEL>
Use <TAB> or arrow keys to move. <Enter> to select.
Use the Restart command under the Main Menu to reset the management agent. The reset screen includes an option to return all configuration parameters to their factory defaults.
AT-S29 Management Software User’s Guide
Parameter Description
POST Runs the Power-On Self-Test
Reload Factory Defaults
Keep IP Setting Retains the settings defined in the IP
Keep User Authentication
Reloads the factory defaults
Configuration menu.
Retains the user names and passwords defined in the Console Login Configuration menu.
73
Using the System Configuration Program

Logging Off the System

Use the Exit command under the Main Menu to exit the configuration program and terminate communications with the switch for the current session.
74

Chapter 3

Web-based Management

Web-based Configuration and Monitoring

The Network Management Module provides an embedded HTTP Web agent in addition to the menu-driven system configuration program. This agent can be accessed by any computer on the network using a standard Web browser (Internet Explorer 4.0 or above, or Netscape Navigator 4.0 or above).
Note
If you experience a screen refresh problem with Internet Explorer 5.0, you can use the Back and Forward buttons in the Tool bar to manually refresh the window, or you can use IE 4.0 or Navigator 4.0.
Using the Web browser management interface you can configure a switch stack, view statistics, and monitor network activity. The Web interface also provides access to a range of SNMP management functions with its MIB and RMON browser utilities.
Prior to accessing the Network Management Module from a Web browser, be sure you have first performed the following tasks:
1. Configure the switch with a valid IP address, subnet mask, and default gateway using an out-of-band serial connection or BootP protocol.
2. Set user names and passwords using an out-of-band serial connection. Access to the Web Agent is controlled by the same Administrator user names and passwords as the on-board configuration program.
Note
If the PC is directly connected to the AT-8324SX switch, you must turn off the network proxy in the Web browser. For instructions on how to turn off the network proxy, refer to your Web browser documentation.
75
Web-based Management

Navigating the Web Browser Interface

To access the Web-browser interface you must first enter a user name and password. The default user names are "admin" and "guest," with no password. The administrator has Read/Write access to all configuration parameters and statistics, and the guest has Read Only access to the management program.
Home Page
When your Web browser connects with the Network Management Module’s Web agent, the home page is displayed. The home page displays the Main Menu on the left-hand side of the screen and the System Information on the right-hand side. The Main Menu links are used to navigate to other menus and display configuration parameters and statistical data.
76
If this is your first time to log into the configuration program, you should define a new administrator password, record it and put it in a safe place. From the Main Menu, select Security Configuration and enter a new password for the administrator. Note that passwords can consist of up to 14 alphanumeric characters and are not case sensitive.
Note
Based on the default configuration, a user is allowed three attempts to enter the correct password; on the third failed attempt the current connection is terminated.
AT-S29 Management Software User’s Guide
Configurable parameters have a dialog box or drop-down list. Once a configuration change has been made on a page, be sure to click on the “Apply” button at the bottom of the page to confirm the new setting. Alternatively, you can click on “Revert” to clear any changes prior to pressing “Apply.”
Panel Display
Main Menu
The Web Agent displays an image of the switch’s ports and expansion modules, showing port activity, speed, or duplex mode, depending on the specified mode. Note that clicking on the image of a port or module will display statistics for the selected item.
Using the on-board Web agent, you can define system parameters, manage and control the switch, the connected stack and all its ports, or monitor network conditions. The following table briefly describes the selections available from this program.
Menu Description
System Provides basic system description, including contact
information.
Switch Shows hardware/firmware version numbers, power
status, and expansion modules in use.
IP Includes boot state, IP address, and Telnet session
count.
SNMP Configures communities and trap managers; and
activates traps.
Security Sets passwords for system access.
Upgrade Downloads new version of firmware to update your
system.
Address Table Provides full listing of unicast addresses, sorted by
address or VLAN.
STA Enables Spanning Tree Algorithm; also sets
parameters for switch priority, hello time, maximum message age, and forward delay; as well as port priority and path cost.
77
Web-based Management
Menu Description
Bridge Extension
Displays/configures extended bridge capabilities provided by this switch, including support for traffic classes, GMRP multicast filtering, and VLAN extensions.
Priority Configures default port priorities and queue
assignments.
VLAN Configures VLAN group members, automatic
registration with GVRP, and other port-specific VLAN settings.
IGMP Configures IGMP multicast filtering.
Port Enables any port, sets communication mode to auto-
negotiation, full duplex or half duplex, and enables/ disables flow control.
Mirror Sets the source and target ports for mirroring.
Trunk Specifies ports to group into aggregate trunks.
Statistics Displays statistics on network traffic passing through
the selected port.
78

System Information

System Name
CentreCOM AT-8324SX
IP Address
Object ID Location
Contact System Up Time
1.0.1.0.1
1.3.6.1.4.207.1.4.42
Leslie extension 613
Development
41 d 2 h 11 min 48 s
Use the System Information screen to display descriptive information about the switch, or for quick system identification as shown in the following figure and table.
AT-S29 Management Software User’s Guide
Menu Description
System Name
IP Address
1
2
Name assigned to the switch system
IP address of the agent you are managing. The agent module supports SNMP over UDP/IP transport protocol. In this environment, all systems on the Internet, such as network interconnection devices and any PC accessing the agent module are assigned an IP address. Valid IP addresses consist of four numbers, of 0 to 255, and separated by periods. Anything outside of this format will not be accepted by the configuration program.
Object ID MIB II object identifier for switch’s network
management subsystem (AT-8324SX:
1.3.6.1.4.207.1.4.42).
Location
1
Specifies the area or location where the system resides.
Contact
1
Contact person for the system.
System Uptime Length of time the current management agent
has been running. (Note that the first value is 1/100 seconds.)
1. Maximum string length is 45 characters.
2. The default value is 0.0.0.0.
79
Web-based Management

Switch Information

Main Board
Use the Switch Information screen to display hardware/firmware version numbers for the main board and agent modules, as well as the power status and modules plugged into the system.
Serial Number Number of Ports
Hardware Version Firmware Version
Internal Power Status Redundant Power Status
00-30-84-9A-3B-80
24
V3.0
V1.11
Active
Inactive
Parameter Description
Serial Number Serial number of the main board.
Number of Ports Number of ports in this unit.
Hardware Version Hardware version of the main board.
Firmware version System ROM version.
Internal Power Status Power status for the switch.
Redundant Power Status Redundant power status for the switch.
Management
Expansion Slot
80
Hardware Version: POST ROM Version:
Firmware Version:
Role Master
V2.0
V1.10
V1.12
Parameter Description
Hardware Version Hardware version of the Agent Module
POST ROM Version Version number of the Agent Module’s
Power-on Self-test.
Firmware Version Agent Module’s firmware version
Role Shows if this module is Master or Slave.
Expansion Slot
Expansion Slot 1:
1-Port 1000Base-SX-SC
Expansion Slot 2:
4GB Stack Module
AT-S29 Management Software User’s Guide
Parameter Description
Expansion Slot 1 Shows module type if inserted (100Base-FX,
1000Base-SX, or 1000Base-LX).
Expansion Slot 2 Shows module type if inserted (100Base-FX,
1000Base-SX, 1000Base-LX or Stack).
81
Web-based Management

IP Configuration

Use the IP Configuration screen to set the bootup option, configure the IP addresses for the agent module, or set the number or concurrent Telnet sessions allowed. The screen shown below is described in the following table.
IP State: IP Address:
Subnet Mask: Gateway IP Address:
MAC Address: Number of Telnet sessions (1-4):
User-Configured
10.1.0.1
255.255.255.0
10.1.0.254
00-30-84-E8-93-AE
4
Parameter Default Description
IP State USER-CONFIG Specifies whether IP functionality is enabled via manual
configuration, or set by Boot Protocol (BootP). Options include:
USER-CONFIG - IP functionality is enabled based on the default or user specified IP Configuration. (This is the default setting.).
BootP Get IP - IP is enabled but will not function until a BootP reply has been received. BootP requests will be periodically broadcast by the switch in an effort to learn its IP address. (BootP values include the IP address, default gateway, subnet mask, TFTP boot file name, and TFTP server IP.)
IP Address 10.1.0.1 IP address of the agent you are managing. The Agent Module
supports SNMP over UDP/IP transport protocol. In this environment, all systems on the Internet, such as network interconnection devices and any PC accessing the Agent Module are assigned an IP address. Valid IP addresses consist of four numbers, of 0 to 255, and separated by periods. Anything outside of this format will not be accepted by the configuration program.
Subnet Mask
255.255.255.0 Subnet mask of the agent you have selected. This mask identifies the host address bits used for routing to specific subnets.
Gateway IP Address
0.0.0.0 Gateway used to pass trap messages from the switch’s agent to the management station. Note that the gateway must be defined if the management station is located in a different IP segment.
82
Parameter Default Description
Community String: Access Mode:
Read-Only
SNMP Community Capability: 5
Current:
New:
public RO private RW
<<Add
Remove
netman RW
AT-S29 Management Software User’s Guide
MAC
- Physical address of the Agent Module
Address
Number of
4 Sets the number of concurrent Telnet sessions allowed to Telnet Sessions

SNMP Configuration

Use the SNMP Configuration screen to display and modify parameters for the Simple Network Management Protocol (SNMP). The switch includes an on-board SNMP agent which monitors the status of its hardware, as well as the traffic passing through its ports. A computer attached to the network, called a Network Management Station (NMS), can be used to access this information. Access rights to the on-board agent are controlled by community strings. To communicate with the switch, the NMS must first submit a valid community string for authentication. The options for configuring community strings and related trap functions are described in the sections.
SNMP
Community
The following figure and table describe how to configure the community strings authorized for trap management access. Up to 5 community names may be entered.
access the Agent Module.
Parameter Description
Community String A community entry authorized for trap
management access. (The maximum string length is 19 characters).
Access Mode Management access is restricted to Read Only or
Read/Write.
Add/Remove Add/remove strings from the active list
83
Web-based Management
The default community strings are listed here.
Purpose Community String Privileges
General access public Read Only
Trap Managers
Network
private Read/Write
administrators
Network
netman Read/Write
management
The following figure and table describe how to specify management stations that will receive authentication failure messages or other trap messages from the switch. Up to 5 trap managers may be entered.
Current:
(none)
Enable Authentication Trap Generation:
<<Add
Remove
New:
Trap Manager IP address: Trap Manager Community String:
Parameter Description
Trap Manager IP Address IP address of the trap manager.
Trap Manager A community specified in the SNMP
Communities table.
Add/Remove Add/remove strings from the active list.
Enable Authentication Traps
Issue a trap message to specified IP trap managers whenever authentication of an SNMP request fails. (The default is enabled.)
84

Security Configuration

Use the Security Configuration screen to restrict management access based on specified user names and passwords. The Administrator has write access for parameters governing the SNMP agent. You should therefore assign a user name and password to the Administrator as soon as possible, and store it in a safe place. (If for some reason your password is lost, or you can not gain access to the system’s configuration program, contact Allied Telesyn for assistance.) The parameters shown on this screen are indicated in the following figure and table.
Change Password
Old Password New Password Confirm Password
This password is for the system Administrator access, with access privilege of Read/Write for all screens. Passwords can consist of up to 11 alphanumeric characters and are not case sensitive. (Default name: admin; default password: null)
AT-S29 Management Software User’s Guide
85
Web-based Management

Firmware Upgrade Options

You can upgrade system firmware via a Web browser, a TFTP server, or a direct connection to the console port.
Web Upload
Management
Use the Web Upload Management menu to load software updates into the switch. The upload file should be an AT-8324SX compressed binary file from Allied Telesyn; otherwise the agent will not accept it. The success of the upload operation depends on the quality of the network connection. After downloading the new software, the agent will automatically restart itself. Parameters shown on this screen are indicated in the following figure and table.
Upload Mode
File Name
Start Web Upload
Permanent
Browse
Parameter Description
Upload Mode Uploads to permanent flash ROM.
File Name The AT-8324SX compressed binary file to upload.
Use the browse button to locate the file on your local network.
86
Start Web Upload Uploads the specified file.
AT-S29 Management Software User’s Guide
Server IP Address
0.0.0.0
Download Mode
File Name
Permanent
Start TFTP Upload
TFTP Download
Management
Use the TFTP Download Management menu to load software updates into the switch. The download file should be an AT-8324SX compressed binary file from Allied Telesyn; otherwise the agent will not accept it. The success of the download operation depends on the accessibility of the TFTP server and the quality of the network connection. After downloading the new software, the agent will automatically restart itself. Parameters shown on this screen are indicated in the following figure and table.
Parameter Description
Server IP Address IP address of a TFTP server.
Download Mode The system downloads to permanent flash
ROM.
File Name The AT-8324SX compressed binary file to
download.
Start TFTP Download
Issues a request to TFTP server to download the specified file.
87
Web-based Management

Address Table Configuration

The Address Table contains the unicast MAC addresses and VLAN identifier associated with each port (that is, the source port associated with the address and VLAN). You can also clear the entire address table, or information associated with a specific port, address, or VLAN identifier; or set the aging time for deleting inactive entries. The information displayed in the Address Table is indicated in the following figure and table.
Aging Time (10-415):
Dynamic Address Counts:
Static Address Counts:
Address Table Sort Key:
000024-B32883, VLAN 1, Unit 1, Port 7, Dynamic
0000E2-12F9F8, VLAN 1, Unit 1, Port 7, Dynamic
0000E2-16C582, VLAN 1, Unit 1, Port 7, Dynamic
0000E2-20C3D5, VLAN 1, Unit 1, Port 7, Dynamic
0000E2-2174D0, VLAN 1, Unit 1, Port 7, Dyna mic 0000E2-000678, VLAN 1, Unit 1, Port 7, Dynamic
0000E8-008907, VLAN 1, Unit 1, Port 7, Dynamic
0000E8-B235D5, VLAN 1, Unit 1, Port 7, Dynamic
0000E8-1012D5, VLAN 1, Unit 1, Port 7, Dyna mic
0000E8-B21002, VLAN 1, Unit 1, Port 7, Dynamic
0000E8-24C346, VLAN 1, Unit 1, Port 7, Dynamic
Address
300
115
0
seconds
<<Add
Remove
Clear Table
MAC Address
VLAN
(1-2048)
Unit Port
1 1
Parameter Description
Aging Time Time-out period in seconds for aging out dynamically learned
forwarding information. The range is 10 - 415 seconds; and the default is 300 seconds.
Dynamic Address Count The number of dynamically learned addresses.
Static Address Count The number of statistically configured addresses
Address Table Sort Key The system displays the MAC address of each node, the switch unit
and the port whose address table includes this MAC address, the associated VLAN(s), and the address status (i.e., dynamic or static)
Address Table All entries, sorted by address or VLAN ID.
New Static Address Use these fields to add or remove a static entry to the address
table. Indicate the address, stack unit, port and VLAN group when adding a new entry.
Add/Remove Adds/removes selected address.
Clear Table Removes all addresses from the address table.
88

STA (Spanning Tree Algorithm)

The Spanning Tree Algorithm can be used to detect and disable network loops, and to provide backup links between switches, bridges or routers. This allows the switch to interact with other bridging devices (that is, STA compliant switch, bridge or router) in your network to ensure that only one route exists between any two stations on the network. For a more detailed description of how to use this algorithm, refer to Chapter
4.
AT-S29 Management Software User’s Guide
Spanning Tree
Information
The Spanning Tree Information screen displays a summary of the STA information for the overall bridge or for a specific port or module. To make any changes to the parameters for the Spanning Tree, use the Spanning Tree Configuration menu. Also note that this screen cannot be accessed unless you have already enabled the Spanning Tree Algorithm via the Spanning Tree Configuration menu.
Spanning Tree
The parameters shown in the following figure and table describe the current bridge STA Information.
Spanning Tree State Bridge ID
Max Age Hello Time 2 Seconds Configuration Changes 22 Forward Delay
Enabled
32768.003084119A3B 20 Seconds
Designated Root Root Port 7
Root Path Cost
Last Topology Change15 Seconds 1 d 2 h 3 min 4 s
0.003084FFFF33
19
Parameter Description
Spanning Tree State
Shows if switch is enabled to participate in an STA compliant network.
Bridge ID A unique identifier for this bridge, consisting of
bridge priority plus MAC address (where the address is normally taken from Port 1).
Max Age The maximum time (in seconds) a device can
wait without receiving a configuration message before attempting to reconfigure.
Hello Time The time interval (in seconds) at which the root
device transmits a configuration message.
89
Web-based Management
Parameter Description
Forward Delay The maximum time (in seconds) the root device
will wait before changing states (i.e., listening to learning to forwarding).
Root The priority and MAC address of the device in
the spanning tree that this switch has accepted as the root device.
Root Port The number of the port on this switch that is
closest to the root. This switch communicates with the root device through this port. If there is no root port, then this switch has been accepted as the root device of the spanning tree network.
Root Path Cost The path cost from the root port on this switch
to the root device.
Configuration Changes
Last Topology Change
The number of times the spanning tree has been reconfigured.
The time since the spanning tree was last reconfigured.
STA Port Configuration
The parameters shown in the following figure and table are for port or module STA Information (Port 1-12, Port 13-24, Expansion Slot 1 or Expansion Slot 2).
Port Status
Port Designated Cost Designated Bridge
1
Disabled
2
Disabled Disabled
3
Disabled
4
Disabled
5
Forward Transitions
0 0
0 0 0
32768.0030849A3B80
19 19
32768.0030849A3B80
19
32768.0030849A3B80
19
32768.0030849A3B80
32768.0030849A3B80
19
Designated Po rt
128.1
128.2
128.3
128.4
128.5
90
Parameter Description
Port Status Displays the current state of this port within the
spanning tree:
Disabled:
Port has been disabled by the user or has failed
diagnostics.
Blocked:
Port receives STA configuration messages, but does not
forward packets.
Listening:
Port will leave blocking state due to topology change, starts transmitting configuration messages, but does not yet forward packets.
Learning:
Has transmitted configuration messages for an interval set by the Forward Delay parameter without receiving contradictory information. Port address table is cleared, and the port begins learning addresses.
Forwarding: The port forwards packets, and continues learning addresses. The rules defining port status are:
A port on a network segment with no other STA compliant bridging device is always forwarding.
If two ports of a switch are connected to the same segment and there is no other STA device attached to this segment, the port with the smaller ID forwards packets and the other is blocked.
All ports are blocked when the switch is booted, then some of them change state to listening, to learning, and then to forwarding.
AT-S29 Management Software User’s Guide
Forward
The number of times the port has changed status to forwarding state.
Transitions
Designated Cost The cost for a packet to travel from this port to the root in the current
spanning tree configuration. The slower the media, the higher the cost.
Designated Bridge The priority and MAC address of the device through which this port must
communicate to reach the root of the spanning tree.
Designated Port The port on the designated bridging device through which this switch
must communicate with the root of the spanning tree.
91
Web-based Management
Spanning Tree
Configuration
The following figures and tables describe Bridge STA configuration.
Switch
Usage: Priority:
Disabled
32768
Parameter Default Description
Usage Enabled Enable this parameter to participate in an STA
compliant network.
Priority 32,768 Device priority is used in selecting the root
device, root port, and designated port. The device with the highest priority becomes the STA root device. However, if all devices have the same priority, the device with the lowest MAC address will then become the root device. Enter a value from 0 - 65535. Remember that the lower the numeric value, the higher the priority.
When the Switch Becomes Root
Hello Time: Maximum Age:
Forward Delay:
2 20
15
seconds
seconds seconds
92
AT-S29 Management Software User’s Guide
Parameter Default Description
Hello Time 2 The time interval (in seconds) at which the
root device transmits a configuration message. The minimum value is 1. The maximum value is the lower of 10 or [(Max. Message Age / 2) -1].
Max (Message) Age
Forward Delay
20 The maximum time (in seconds) a device
can wait without receiving a configuration message before attempting to reconfigure. All device ports (except for designated ports) should receive configuration messages at regular intervals. Any port that ages out STA information (provided in the last configuration message) becomes the designated port for the attached LAN. If it is a root port, a new root port is selected from among the device ports attached to the network. The minimum value is the higher of 6 or [2 x (Hello Time + 1)]. The maximum value is the lower of 40 or [2 x (Forward Delay - 1)].
15 The maximum time (in seconds) the root
device will wait before changing states (i.e., listening to learning to forwarding). This delay is required because every device must receive information about topology changes before it starts to forward frames. In addition, each port needs time to listen for conflicting information that would make it return to a blocking state; otherwise, temporary data loops might result. The maximum value is 30. The minimum value is the higher of 4 or [(Max. Message Age / 2) + 1].
93
Web-based Management
STA Port
Configuration
The following figure and table describe STA configuration for ports or modules. (Note that the Spanning Tree Configuration screen for the expansion slots also indicates module type.)
Priority
Port
1 2
3 4 5
128 128
128 128 128
Path Cost
19 19 19
19 19
Parameter Default Description
Priority 128 Defines the priority for the use of a port in
the STA algorithm. If the path cost for all ports on a switch are the same, the port with the highest priority (i.e., lowest value) will be configured as an active link in the spanning tree. Where more than one port is assigned the highest priority, the port with lowest numeric identifier will be enabled. The range is 0 - 255.
(Path) Cost 100/19/4 This parameter is used by the STA
algorithm to determine the best path between devices. Therefore, lower values should be assigned to ports attached to faster media, and higher values assigned to ports with slower media. The default and recommended range is:
Standard Ethernet: 100 (50~600)
Fast Ethernet: 19 (10~60)
Gigabit Ethernet: 4 (3~10)
The full range is 0 - 65535. Note: Path cost takes precedence over port priority.
94

Configuring Bridge MIB Extensions

Extended Multicast Filtering Service
Static Entry Individ u al Port
Traffic Classes
VLAN Learning Configurable PVID Ta g ging
Local VLAN Capable
No
No
Yes
Yes
Yes
IVL
The Bridge MIB includes extensions for managed devices that support Traffic Classes, Multicast Filtering and Virtual LANs. To configure these extensions, use the Extended Bridge Configuration screen as shown below.
Bridge Capability
Parameter Description
AT-S29 Management Software User’s Guide
Extended Multicast Filtering Services
Enables filtering of individual multicast addresses based on GMRP (GARP Multicast Registration Protocol). Note that this function is not available for the current firmware release.
Traffic Classes Provides mapping of user priorities to multiple
traffic classes. (Refer to the Priority menu.)
Static Entry Individual Port
Enables static filtering for unicast and multicast addresses. (Refer to the Address Table.)
VLAN Learning This switch uses Independent VLAN Learning
(IVL), whereby each port maintains its own VLAN filtering database.
Configurable PVID Tagging
Allows you to override the default PVID setting (Port VLAN ID used in frame tags) and its egress status (VLAN-Tagged or Untagged) on each port. (Refer to VLAN/VLAN Port Configuration.).
Local VLAN Capable
This switch does not support multiple local bridges (that is, multiple Spanning Trees).
95
Web-based Management
Bridge Settings
Traffic Classes
GMRP GVRP
Enable Enable Enable
Parameter Description
Traffic Class
1
Multiple traffic classes are supported by this switch as indicated under Bridge Capabilities. However, you can disable this function by setting this parameter to False.
GMRP
1
GARP Multicast Registration Protocol (GMRP) allows network devices to register endstations with multicast groups.
The Internet Group Management Protocol (IGMP) is currently used by this switch to provide automatic multicast filtering.
1
GVRP
GARP VLAN Registration Protocol (GVRP) defines a way for switches to exchange VLAN information in order to register necessary VLAN members on ports across the network.
1. Not implemented in this firmware release.
96

Priority

Port
Default Ingress User
Number of Egress
Priority Traffic Classes
1
2
3
4
5
0
0
0
0 0
2
2
2
2
2
AT-S29 Management Software User’s Guide
IEEE 802.1p defines up to eight separate traffic classes. This switch supports Quality of Service (QoS) by using two priority queues, with weighted fair queuing for each port. You can use the Priority menu to configure the default priority for each port, or to display the mapping for the traffic classes as described in the following sections.
Port Priority
Configuration
The default priority for all ingress ports is zero. Therefore, any inbound frames that do not have priority tags will be placed in the low priority output queue. Default priority is only used to determine the output queue for the current port; no priority tag is actually added to the frame. You can use the Port Priority Configuration screen to adjust the default priority for any port as shown below:
Parameter Description
Port Numeric identifier for switch port.
Default Ingress User Priority
Default priority can be set to any value from 0-7, where 0-3 specifies the low priority queue and 4­7 specifies the high priority queue.
Number of Egress Traffic Classes
Indicates that this switch supports two priority output queues.
97
Web-based Management
Port Traffic Class
Information
This switch provides two priority levels with weighted fair queuing for port egress. This means that any frames with a default or user priority from 0-3 are sent to the low priority queue “0” while those from 4-7 are sent to the high priority queue “1” as shown in the following screen:
Port Priority 0 Priority 1 Priority 2 Priority 3 Priority 4 Priority 5 Priority 6 Priority 7 Class Range
0
1
0
2
0
3
0
4
0
5
0 0
0 0
0
0 0
0 0
0
01 1 11 01 1 11
01 1 11 01 1 11
01 1 11
0-1 0-1
0-1 0-1
0-1
Parameter Description
Port Numeric identifier for switch port.
User Priority Shows that user priorities 0-3 specify the low
priority queue and 4-7 specify the high priority queue.
98

Configuring Virtual LANs

VLAN Version Number
Maximum Number of Support VLANs
Maximum VLAN ID
Current Number of 802.1Q VLANs Configure d
1
16
2048
1
Use the VLAN Configuration menu to assign any port on the switch to any of up to 16 LAN groups. In conventional networks with routers, broadcast traffic is split up into separate domains. Switches do not inherently support broadcast domains. This can lead to broadcast storms in large networks that handle a lot of IPX traffic. By using IEEE
802.1Q compliant VLANs and GARP VLAN Registration Protocol, you can organize any group of network nodes into separate broadcast domains, confining broadcast traffic to the originating group. This also provides a more secure and much cleaner network environment.
For a more detailed description of how to use VLANs, see Chapter 4. The VLAN configuration screens are described in the following sections.
AT-S29 Management Software User’s Guide
VLAN Basic
Information
The VLAN Basic Information screen displays basic information on the VLAN type support by this switch.
Parameter Description
VLAN Version Number
The VLAN version used by this switch as specified in the IEEE 802.1Q standard.
MAX VLAN ID Maximum VLAN ID recognized by this switch.
MAX Supported VLANs
Current Number of VLANs Configured
Maximum number of VLANs that can be configured on this switch.
The number of VLANs currently configured on this switch.
99
Web-based Management
VLAN Current
Table
This screen shows the current port members of each VLAN and whether or not the port supports VLAN tagging. Ports assigned to a large VLAN group that crosses several switches should use VLAN tagging. However, if you just want to create a small port-based VLAN for one or two switches, you can assign ports to the same untagged VLAN. The current configuration is shown in the following screen.
VLAN Entry Delete Count: 0
VLAN ID: 1
Up Time at Creation
Status
0 d 0 h 0 min 0 s
Dynamic GVRP
Parameter Description
VLAN Entry Delete Count
The number of times a VLAN entry has been deleted from this table.
VLAN ID The ID for the VLAN currently displayed.
Up Time at Creation
The value of sysUpTime (System Up Time) when this VLAN was created.
Status Shows how this VLAN was added to the switch:
Dynamic GVRP: Automatically learned via GVRP. Permanent: Added as a static entry.
Egress Ports
Unit 1, Port 1 Unit 1, Port 2 Unit 1, Port 3 Unit 1, Port 4 Unit 1, Port 5 Unit 1, Port 6 Unit 1, Port 7 Unit 1, Port 8
Untagged Ports
Unit 1, Port 1 Unit 1, Port 2 Unit 1, Port 3 Unit 1, Port 4 Unit 1, Port 5 Unit 1, Port 6 Unit 1, Port 7 Unit 1, Port 8
Parameter Description
100
Egress Ports Shows the ports which have been added to the
displayed VLAN group.
Untagged Ports Shows the untagged VLAN port members.
Loading...