3COM 2250-SFP, 2226-SFP, 2426-PWR User Manual

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Baseline Switch 2226-SFP Plus Baseline Switch 2426-PWR Plus Baseline Switch 2250-SFP Plus

Installation and User Guide

Installations- und Bedienungsanleitung

3CBLSF26 3CBLSF26PWR 3CBLSF50

Part No. 10016622 Published May 2008

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3Com Corporation ■ 350 Campus Drive ■ Marlborough ■ MA 01752-3064

Copyright © 2008, 3Com Corporation. All rights reserved. No part of this documentation may be reproduced in any form or by any means or used to make any derivative work (such as translation, transformation, or adaptation) without written permission from 3Com Corporation.

3Com Corporation reserves the right to revise this documentation and to make changes in content from time to time without obligation on the part of 3Com Corporation to provide notification of such revision or change.

3Com Corporation provides this documentation without warranty, term, or condition of any kind, either implied or expressed, including, but not limited to, the implied warranties, terms or conditions of merchantability, satisfactory quality, and fitness for a particular purpose. 3Com may make improvements or changes in the product(s) and/or the program(s) described in this documentation at any time.

If there is any software on removable media described in this documentation, it is furnished under a license agreement included with the product as a separate document, in the hard copy documentation, or on the removable media in a directory file named LICENSE.TXT or !LICENSE.TXT. If you are unable to locate a copy, please contact 3Com and a copy will be provided to you.

UNITED STATES GOVERNMENT LEGEND

If you are a United States government agency, then this documentation and the software described herein are provided to you subject to the following:

All technical data and computer software are commercial in nature and developed solely at private expense. Software is delivered as “Commercial Computer Software” as defined in DFARS 252.227-7014 (June 1995) or as a “commercial item” as defined in FAR 2.101(a) and as such is provided with only such rights as are provided in 3Com’s standard commercial license for the Software. Technical data is provided with limited rights only as provided in DFAR

252.227-7015 (Nov 1995) or FAR 52.227-14 (June 1987), whichever is applicable. You agree not to remove or deface any portion of any legend provided on any licensed program or documentation contained in, or delivered to you in conjunction with, this User Guide.

Unless otherwise indicated, 3Com registered trademarks are registered in the United States and may or may not be registered in other countries.

3Com and the 3Com logo are registered trademarks of 3Com Corporation.

Intel and Pentium are registered trademarks of Intel Corporation. Microsoft, MS-DOS, Windows, and Windows NT are registered trademarks of Microsoft Corporation. Novell and NetWare are registered trademarks of Novell, Inc. UNIX is a registered trademark in the United States and other countries, licensed exclusively through X/Open Company, Ltd.

IEEE and 802 are registered trademarks of the Institute of Electrical and Electronics Engineers, Inc.

All other company and product names may be trademarks of the respective companies with which they are associated.

ENVIRONMENTAL STATEMENT

It is the policy of 3Com Corporation to be environmentally friendly in all operations. To uphold our policy, we are committed to:

■ Establishing environmental performance standards that comply with national

legislation and regulations.

■ Conserving energy, materials and natural resources in all operations.

■ Reducing the waste generated by all operations. Ensuring that all waste

conforms to recognized environmental standards. Maximizing the recyclable and reusable content of all products.

■ Ensuring that all products can be recycled, reused and disposed of safely.

■ Ensuring that all products are labelled according to recognized

environmental standards.

■ Improving our environmental record on a continual basis.

End of Life Statement

3Com processes allow for the recovery, reclamation and safe disposal of all end-of-life electronic components.

Regulated Materials Statement

3Com products do not contain any hazardous or ozone-depleting material.

Environmental Statement about the Documentation

The documentation for this product is printed on paper that comes from sustainable, managed forests; it is fully biodegradable and recyclable, and is completely chlorine-free. The varnish is environmentally friendly, and the inks are vegetable-based with a low heavy-metal content.

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CONTENTS

ABOUT THIS GUIDE

Conventions 7 Documentation Comments 8 Product Registration 8

1 INTRODUCING THE BASELINE SWITCH

Overview of the Baseline Switch 9 Features and Capabilities 9

Autosensing of MDI/MDIX Connections 9 Autonegotiating 10/100 Mbps Ports 9 Power-over-Ethernet Capability 10 Gigabit Combo Ports (RJ-45/SFP) 10

Physical Features 10

Front Panel 11 Rear Panel 15

Package Contents 16

2 INSTALLING THE SWITCH

Important Safety Information 17 Positioning the Switch 18 Rack-Mounting or Free-Standing 19

Using the Mounting Kit 19 Montagesatz Anweisungen 20 Placing Units On Top of Each Other 20

Supplying Power to the Switch 20

Checking for Correct Operation 21

Using SFP Tranceivers 22

Approved SFP Transceivers 22 Inserting an SFP Transceiver 22 Removing an SFP Transceiver 23

Performing Spot Checks 23

3 CONNECTING TO THE WEB INTERFACE

Requirements for Accessing the Web Interface 25 Using the Console Command Line Interface (CLI) 25 Logging On to the Web Interface 27 Navigating the Web Interface 28

Menu 28 Buttons 31 Port Status 31

Accessing the Switch using the 3Com Switch Detect

Application 31 Running the 3Com Switch Detect Application 32

4 CONFIGURING THE SWITCH FROM THE WEB INTERFACE

Configuration Overview 35 Device Summary Information 35 Administration Settings 37

Modifying the IP Address Settings 37

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Automatic IP Configuration 37 IP Setup 38 Backup Configuration 38 Restore Configuration 39 Firmware Upgrade 39 Reset 40 System Access 40 System Name 43 System Time 43 SNMP 43

Configuring VLANs 44

VLAN 45 Forwarding Tagged/Untagged Frames 49 Sample VLAN Configurations 49 Spanning Tree 51 IGMP Snooping & Query 54 Broadcast Storm 55 QoS VoIP Traffic Settings 56 PoE (3CBLSF26-PWR only) 59

Configuring Port Settings 60

Administration 60 Link Aggregation 63 Statistics 66

Security 66

RADIUS Client 66

802.1X Settings 67

Monitoring 69

Address Table 69 Port Mirroring 70 Cable Diagnostics 72

5 TROUBLESHOOTING

Resetting to Factory Defaults 75 Forgotten Static IP Address 76 Solving LED Issues 76 If the Problem Persists 77

A OBTAINING SUPPORT FOR YOUR PRODUCT

Register Your Product 79 Purchase Value-Added Services 79 Troubleshoot Online 79 Access Software Downloads 79 Telephone Technical Support and Repair 80 Contact Us 80

B TECHNICAL INFORMATION

3CBLSF26 Related Standards 83

Environmental 83 Physical 83 Electrical 83

3CBLSF26PWR Related Standards 84

Environmental 84 Physical 84 Electrical 84

3CBLSF50 Related Standards 85

Environmental 85 Physical 85 Electrical 85

C PIN-OUTS

Console Cable 87 Null Modem Cable 88

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PC-AT Serial Cable 88 Modem Cable 88 Ethernet Port RJ-45 Pin Assignments 89

D 3COM CLI REFERENCE GUIDE

Getting Started with the Command Line Interface 91

Console Port 91 Logging on to the CLI 91 Automatic Logout 92 Concurrent CLI Sessions 92

CLI Commands 92

?93 Ping 94 Summary 94 ipSetup 95 Upgrade 96 Initialize 97 Reboot 97 Logout 98 Password 98

REGULATORY NOTICES

GLOSSARY

INDEX

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ABOUT THIS GUIDE

This guide describes how to install your 3Com Switch and perform initial management configurations. It covers the following switches:

Baseline Switch 2226-SFP Plus (3CBLSF26) Baseline Switch 2426-PWR Plus (3CBLSF26PWR) Baseline Switch 2250-SFP Plus (3CBLSF50)

Unless noted otherwise, the features, specifications and procedures described hereafter are shared by all the switch models covered in this guide. Device drawings, screen captures and command line interface examples are based on the 3CBLSF26PWR model. Where features vary significantly between the switches, examples are provided for each.

This guide is intended for use by those responsible for installing and setting up network equipment; consequently, it assumes a basic working knowledge of LANs (Local Area Networks).

Diese Anleitung ist für die Benutzung durch Netzwerkadministratoren vorgesehen, die für die Installation und Einstellung von Netzwerkkomponenten verantwortlich sind; Erfahrung bei der Arbeit mit LANs (Local Area Networks) ist vorausgesetzt.

If release notes are shipped with your product and the information there differs from the information in this guide, follow the instructions in the release notes.

Most user guides and release notes are available in Adobe Acrobat Reader Portable Document Format (PDF) or HTML on the 3Com World Wide Web site:

www.3Com.com

Conventions

Ta bl e 1 and Ta bl e 2 list conventions that are used

throughout this guide.

Ta b l e 1 Notice Icons

Icon Notice Type Description

Information note Information that describes

Caution Information that alerts you to

Warning Information that alerts you to

important features or instructions

potential loss of data or potential damage to an application, system, or device

potential personal injury

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8 ABOUT THIS GUIDE

Tabl e 2 Text Conventions

Convention Description

The words “enter” and “type”

Keyboard key names If you must press two or more keys

Words in italics Italics are used to:

When you see the word “enter” in this guide, you must type something, and then press Return or Enter. Do not press Return or Enter when an instruction simply says “type.”

simultaneously, the key names are linked with a plus sign (+). Example:

Press Ctrl+Alt+Del

■ Emphasize a point.

■ Denote a new term at the place where it

is defined in the text.

■ Identify menu names, menu commands,

and software button names. Examples: From the Help menu, select Contents. Click OK.

Documentation Comments

Your suggestions are very important to us. They will help make our documentation more useful to you. Please e-mail comments about this document to 3Com at:

pddtechpubs_comments@3Com.com

Please include the following information when contacting us:

■ Document title

■ Document part number (on the title page)

■ Page number (if appropriate)

Example:

■ Baseline Switch 2426-PWR Plus User Guide

■ Part number: 10016622

■ Page 25

Please note that we can only respond to comments and questions about 3Com product documentation at this e-mail address. Questions related to technical support or sales should be directed in the first instance to your network supplier.

Product Registration

You can now register your Baseline Switch on the 3Com Web site to receive up-to-date information on your product:

http://esupport.3Com.com

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This chapter provides an overview of the features and capabilities of the 3Com Baseline Switch 2226-SFP Plus, 3Com Baseline Switch 2426-PWR Plus, and 3Com Baseline Switch 2250-SFP Plus. It also identifies the contents of the Switch package and helps you get to know the physical features of the device.

INTRODUCING THE BASELINE SWITCH

Overview of the Baseline Switch

The 3Com® Baseline Switch 2226-SFP Plus is a versatile, easy-to-use configurable switch.

The 3Com versatile, easy-to-use configurable Power-over-Ethernet (PoE) Switch.

The 3Com easy-to-use configurable switch.

Each Switch is ideal for users who want the high-speed performance of 10/100 switching with the added functionality of Gigabit copper and fiber links, but do not need sophisticated management capabilities. The Switch is shipped ready for use. No configuration is necessary.

Baseline Switch 2426-PWR Plus is a

Baseline Switch 2250-SFP Plus is a versatile,

Features and Capabilities

The Switch has 24 or 48 shielded RJ-45, 10/100 Mbps auto-negotiating ports and 2 Gigabit combo ports (comprised of a RJ-45 port and a Small Form Factor Pluggable (SFP) transceiver slot) on the front panel for easy, flexible connection to fiber-based Gigabit media. A console port is also provided on the front panel to enable out-of-band configuration.

Autosensing of MDI/MDIX Connections

All ports on the Switch can autosense both medium dependent interface (MDI) and medium dependent interface crossover (MDIX) connections. This allows you to connect network devices to each port using either a normal straight-through TP (twisted pair) cable or a ‘crossover’ TP cable.

Any port can therefore be used to connect to another switch port, server, or workstation without additional configuration.

Autonegotiating 10/100 Mbps Ports

Each 10/100 Mbps port automatically determines the speed and duplex mode of the connected equipment and provides a suitable switched connection. The

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10 INTRODUCING THE BASELINE SWITCH

10/100 Mbps ports can operate in either half-duplex or full-duplex mode.

Power-over-Ethernet Capability

The Switch 2426-PWR Plus (3CBLSF26PWR) provides 24 front panel RJ-45 ports that support the IEEE 802.3af Power-over-Ethernet (PoE) standard. Any 802.3af compliant device attached to a port can directly draw power from the Switch over the Ethernet cable without requiring its own separate power source. This capability gives network administrators centralized power control for devices such as IP phones and wireless access points, which translates into greater network availability.

The Switch also supports a pre-standard implementation of 802.3at, delivering up to 29.6 W per port (measured at the PD, assuming 100 m Cat 5E cable connected between the PD and the Switch 2426-PWR), subject to the maximum power budget available.

Gigabit Combo Ports (RJ-45/SFP)

The 2 Gigabit combo ports support fiber Gigabit Ethernet short-wave (SX) and long-wave (LX) SFP transceivers in any combination. This offers the flexibility of using SFP transceivers to provide connectivity between the Switch and a 1000 Mbps core network.

Physical Features

Figures 1, 2, and 3 show the front and rear panels of the Switch. The numbers in these diagrams refer to numbered sections in “Front Panel” on page 11 and

“Rear Panel”

Figure 1 3CBLSF26 Front and Rear Panels

Figure 2 3CBLSF26PWR Front and Rear Panels

on page 15.

When an SFP port is in operation, the corresponding 1000BASE-T port is disabled. The 1000 Mbps connections can only operate in full duplex mode.

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Physical Features 11

Figure 3 3CBLSF50 Front and Rear Panels

Front Panel

The front panel of the Switch contains a series of indicator lights (LEDs) that help describe the state of various networking and connection operations.

(1) RJ-45 10/100 Ports

WARNING: RJ-45 Ports. These are shielded RJ-45 data sockets. They cannot be used as standard traditional telephone sockets, or to connect the unit to a traditional PBX or public telephone network. Only connect RJ-45 data connectors, network telephony systems, or network telephones to these sockets. Either shielded or unshielded data cables with shielded or unshielded jacks can be connected to these data sockets.

AVERTISSEMENT: Points d’accès RJ-45. Ceux-ci sont protégés par des prises de données. Ils ne peuvent pas être utilisés comme prises de téléphone conventionnelles standard, ni pour la connection de l’unité à un réseau

téléphonique central privé ou public. Raccorder seulement connecteurs de données RJ-45, systèmes de réseaux de téléphonie ou téléphones de réseaux à ces prises. Il est possible de raccorder des câbles protégés ou non protégés avec des jacks protégés ou non protégés à ces prises de données.

WARNHINWEIS: RJ-45-Porte. Diese Porte sind geschützte Datensteckdosen. Sie dürfen weder wie normale traditionelle Telefonsteckdosen noch für die Verbindung der Einheit mit einem traditionellem privatem oder öffentlichem Telefonnetzwerk gebraucht werden. Nur RJ-45-Datenanscluße, Telefonnetzsysteme or Netztelefone an diese Steckdosen anschließen. Entweder geschützte oder ungeschützte Buchsen dürfen an diese Datensteckdosen angeschlossen werden.

The Switch has 24 or 48 10/100 Mbps auto-negotiating ports. Each port supports automatic MDI/MDI-X detection and can be connected to either a 10BASE-T, or 100BASE-TX device.

For each port, the speed and duplex mode (half duplex or full duplex for 10BASE-T and 100BASE-TX) are automatically determined by the capabilities of the connected device.

The 3CBLSF26PWR Switch also supports IEEE

802.3af-2003 standard (802.3af) and pre-standard P802.3at DTE Power via MDI Enhancements (PoE+). Each port can detect connected 802.3af/at-compliant

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12 INTRODUCING THE BASELINE SWITCH

network devices, such as IP phones or wireless access points, and automatically supply the required DC power, up to a maximum of 29.6 W measured at the PD, assuming 100 m Cat 5E cable connected between the PD and the Switch 2426-PWR, subject to power being available from the overall power budget.

(2) Gigabit Combo Ports (RJ-45/SFP)

The Gigabit combo ports (RJ-45/Small Form Factor Pluggable (SFP) ports) are numbered 25 and 26 on 3CBLSF26 and 3CBLSF26PWR, 49 and 50 on 3CBLSF50. If the link connection on the SFP port is active, the associated RJ-45 port of the same number is disabled.

The two SFP ports support fiber Gigabit Ethernet short-wave (SX – 3CSFP91) and long-wave (LX – 3CSFP92) SFP transceivers in any combination. This offers you the flexibility of using SFP transceivers to provide connectivity between the Switch and remote 1000 Mbps workgroups or to create a high-capacity aggregated link backbone connection. The default active port is the SFP port. The selection of active ports can be configured via the Web interface.

The SFP port supports full duplex mode only.

SFP ports are numbered 25 and 26 on 3CBLSF26 and 3CBLSF26PWR, 49 and 50 on 3CBLSF50. When an SFP

port is active it has priority over the 10/100/1000 port of the same number. The corresponding 10/100/1000 port is disabled when an SFP link connection is active.

(3) Console Port

The console port allows out-of-band access to the Switch’s built-in Command Line Interface (CLI) that you can use to reset the Switch to factory defaults, change the IP address that is assigned to the Switch, set the admin password, reboot the Switch, or upgrade the Switch firmware via TFTP.

To connect to the Console Port, you need the following:

■ The console cable provided in the Switch package,

connected to the console port of the Switch, and to an available serial (com) port on your computer

■ A terminal emulation application capable of VT100

emulation, installed on your computer

■ Configure the com port connection parameters in

your terminal emulator as follows:

■ Com port: Choose based on the computer serial

port to which the console cable is attached (often COM1)

■ Speed (baud): 38400

■ Data bits: 8

■ Stop bits: 1

■ Parity: None

■ Flow Control: None

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Physical Features 13

(4) 10/100BASE-TX Link/Activity Status LEDs

The top row (3CBLSF50) and the first (top) and third rows (3CBLSF26/3CBLSF26PWR) of LEDs, which are colored yellow or green, show the link, activity and speed status of the related ports:

Tabl e 1 10/100BASE-TX Link/Activity Status LEDs

Status Meaning

Green The link is operating at 100 Mbps.

Yellow The link is operating at 10 Mbps.

Flashing Green

Flashing Yellow

Off The link has not been established, nothing is

Packets are being received or transmitted on the port at 100 Mbps.

Packets are being received or transmitted on the port at 10 Mbps.

connected to the port, or there is a problem:

■ Check that the attached device is powered

on.

■ Check that the cable is the correct type, is

not faulty, and is inserted correctly.

If these checks do not identify the cause of the problem, it may be that the unit or the device connected to the port is faulty. Contact your supplier for further advice.

(5) 10/100BASE-TX Duplex Status LEDs (3CBLSF26 and 3CBLSF26PWR Only)

The second and fourth row of LEDs, which are colored yellow, show the duplex status of the related ports:

Tabl e 2 10/100BASE-TX Duplex Status LEDs

Status Meaning

Yellow The link is operating in full duplex mode.

Off The link is operating in half duplex mode.

■ The duplex status of the ports on 3CBLSF50

(and 3CBLSF26/3CBLSF26PWR) can also be monitored from the user interface.

(6) Gigabit Combo Port and Duplex Status LEDs

Each Gigabit combo port has two status LEDs which indicate functions dependant upon whether a connection has been made to the fixed 1000BASE-T port, or if an SFP Module has been inserted.

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1000BASE-T Mode

Tabl e 3 1000BASE-T Link/Activity Status LEDs

Link/Activity Meaning

Green The link is operating at 1000 Mbps.

Yel lo w The link is operating at 10 or 100 Mbps.

Flashing Green Packets are being received or

Flashing Yellow Packets are being received or

transmitted on the port at 1000 Mbps.

transmitted on the port at 10 or 100 Mbps.

Off The link has not been established,

nothing is connected to the port, or there is a problem:

■ Check that the attached device is

powered on.

■ Check that the cable is the correct

type, is not faulty, and is inserted correctly.

If these checks do not identify the cause of the problem, it may be that the unit or the device connected to the port is faulty. Contact your supplier for further advice.

Tabl e 4 1000BASE-T SFP/Duplex Status LEDs

SFP/Duplex Meaning

Yel lo w The link is operating at full duplex.

Off The link is operating at half duplex, or

no link is established.

1000BASE-T only operates in full-duplex mode. 10/100BASE-TX can operate in half- or full-duplex mode.

SFP Mode

Tabl e 5 SFP Link/Activity Status LEDs

Link/Activity Meaning

Green The link is operating at 1000 Mbps.

Flashing Green Packets are being received or

Off The link has not been established; Either

transmitted on the port at 1000 Mbps.

nothing is connected to the port, or there is a problem:

■ Check that the attached device is

powered on.

■ Check that the SFP module is inserted

correctly.

■ Check that the fiber cable is the

correct type, is not faulty, and is inserted correctly.

■ Ensure that the transmit (TX) and

receive (RX) fiber cables are not swapped. TX on the remote device must be connected to RX on the local device; likewise, RX on the remote device must be connected to TX on the local device.

If these checks do not identify the cause of the problem, it may be that the unit or the device connected to the port is faulty. Contact your supplier for further advice.

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Physical Features 15

Tabl e 6 SFP Mode SFP/Duplex Status LEDs

SFP/Duplex Meaning

Green The SFP module is inserted, regardless of

Off The SFP module is not inserted.

the link status.

The SFP module will only disable the 1000BASE-T interface once there is a valid link on the module.

(7) Power LED

The Power LED shows the power status of the Switch.

Tabl e 7 Power Status LED

Status Meaning

Green The unit is powered on and ready for use.

Yellow Internal power, POST, or loopback test has

Flashing The Switch is undergoing the power up

Off The unit is not receiving power.

failed. Switch is in fail-safe mode.

sequence, or a software upgrade is underway.

■ Check that the power cord is connected

correctly.

■ If the unit still does not operate, contact your

supplier.

Do not apply the pads if you intend to rack mount the unit.

If the unit is to be part of a free-standing stack, apply the pads to each marked corner area on the underside of the unit. Place the unit on top of the lower unit, ensuring that the pads locate within the recesses of the lower unit.

Rear Panel

The rear panel of the Switch contains the power supply socket.

(9) Power Socket

The Switch automatically adjusts to the supply voltage. Only use the power cord that is supplied with the unit.

(8) Self-adhesive Pads

The unit is supplied with four self-adhesive rubber pads.

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Package Contents

Before installing and using the Switch, verify that your Switch package is complete. The Switch comes with:

■ One power cord

■ One console cable

■ Four standard height, self-adhesive rubber pads

■ One mounting kit (part number 123193-104)

■ Installation CD

■ This User Guide

■ Warranty flyer

The Switch is powered from the AC supply.

If any of the above items are damaged or missing, contact your 3Com network supplier immediately.

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INSTALLING THE SWITCH

This chapter contains information that you need to install and set up the Switch. It covers the following topics:

■ Important Safety Information

■ Positioning the Switch

■ Rack-Mounting or Free-Standing

■ Supplying Power to the Switch

■ Using SFP Tranceivers

■ Performing Spot Checks

Important Safety Information

Please refer to the safety information found in the 3Com Switch Family Safety and Regulatory Information manual included with this product. You can find the 3Com Switch Family Safety and Regulatory Information manual on the product CD-ROM that was included with your switch. You can also download the safety manual from the 3Com Web site: www.3Com.com

Informações Importantes de Segurança

Por favor, antes de manusear o produto, leia cuidadosamente as instruções de segurança encontradas no Manual 3Com Switch Family Safety and Regulatory

Information (Translation for this would be: Informações de Segurança e Regulatórias da Famila de Switches 3Com) incluido no produto. Este manual pode ser encontrado no CD-ROM incluido com o seu switch ou no site da 3Com: www.3Com.com

Viktig säkerhets information

Vänligen hänför till säkerhets informationen som är inkluderad med denna produkt i 3Com Switch Family Safety and Regulatory Information manualen. Du kan hitta denna manual på den CD-ROM som följde med din switch. Du kan även ladda ner denna från 3Com hemsidan: www.3Com.com

Importantes informations de securité

Veuillez consulter les informations de securité qui se trouvent dans le manuel suivant 3Com Switch Family Safety and Regulatory Information celui-ci est inclu avec le produit. Vous pouvez trouver ce manuel sur le CD-ROM qui a été livré avec votre switch. Vous pouvez aussi le télécharger sur le site Web de 3Com à:

www.3Com.com

Wichtige Sicherheits Informationen

Bitte wenden Sie sich an die Sicherheitsinformationen in der 3Com Switch Family Safety and Regulatory Information Anleitung die mit diesem Produkt

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18 INSTALLING THE SWITCH

vorhanden ist. Sie können diese Sicherheitsanleitung auf der CD-ROM finden die im Lieferumfang Ihres Netzwerkschalters enthalten ist. Sie können die Anleitungsdatei auch von der 3Com Webseite:

www.3Com.com herunterladen.

Importante Avviso di Sicurezza

Vi preghiamo di leggere attentamente e seguire le istruzioni indicate nel manuale di sicurezza "3Com Switch Family Safety and Regulatory Information", che troverete incluso a questo prodotto. Puó trovare il suddetto manuale nel CD-ROM allegato al Vostro Switch. Potete anche scaricarlo dal nostro sito:

www.3Com.com

Information importante de seguridad

Le rogamos lea y siga atentamente las instrucciones indicadas en el manual de seguridad del 3Com Switch Family Safety and Regulatory Information, incluido en este producto. Puede encontrar el manual en el CD-ROM adjunto a su switch.Alternativamente lo puede bajar de la web de 3Com: www.3Com.com

Istotne informacje dot. bezpieczeństwa

Informacje dotyczące bezpieczeństwa są umieszczone w Instrukcji obsługi 3Com Switch Family, która jest do łączona do tego produktu. Wraz z prze łącznikiem znajduje sie instrukcja na płycie CD-ROM. Istnieje także możliwość pobrania instrukcji bezpośrednio ze strony internetowej www.3Com.com

Positioning the Switch

The Switch is suitable for use in an office environment where it can be free-standing or mounted in a standard 19-inch equipment rack.

Alternatively, the Switch can be rack-mounted in a wiring closet or equipment room. A mounting kit, containing two mounting brackets and four screws, is supplied with the Switch.

When deciding where to position the Switch, ensure that:

■ It is accessible and cables can be connected easily.

■ Cabling is away from sources of electrical noise.

These include lift shafts, microwave ovens, and air conditioning units. Electromagnetic fields can interfere with the signals on copper cabling and introduce errors, therefore slowing down your network.

■ Water or moisture cannot enter the case of the unit.

■ Air flow around the unit and through the vents on

the side of the case is not restricted (3Com recommends that you provide a minimum of 25 mm (1 in.) clearance).

■ The air is as free from dust as possible.

■ Temperature operating limits are not likely to be

exceeded. It is recommended that the unit is installed in a clean, air conditioned environment.

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Rack-Mounting or Free-Standing 19

It is always good practice to wear an anti-static wrist strap when installing network equipment, connected to a ground point. If one is not available, try to keep in contact with a grounded rack and avoid touching the unit's ports and connectors, if possible. Static discharge can cause reliability problems in your equipment.

Rack-Mounting or Free-Standing

The unit can be mounted in a 19-inch equipment rack using the mounting kit, or it can be free standing. Do not place objects on top of the unit or stack.

CAUTION: If installing the Switch in a free-standing stack of different size Baseline or Superstack 3 units, the smaller units must be installed above the larger ones. Do not have a free-standing stack of more than six units.

Using the Mounting Kit

The Switch is supplied with two mounting brackets and four screws. These are used for rack mounting the unit. When mounting the unit, you should take note of the guidelines given in “Positioning the Switch”

The Switch is 1U (1.7 inches) high and will fit in a standard 19-inch rack.

CAUTION: Disconnect all cables from the unit before continuing. Remove the self-adhesive pads from the underside of the unit, if already fitted.

To rack-mount the Switch:

1 Place the unit the right way up on a hard, flat surface

with the front facing towards you.

2 Locate a mounting bracket over the mounting holes on

one side of the unit.

3 Insert the two screws supplied in the mounting kit and

fully tighten with a suitable screwdriver.

Figure 4 Rack Mounting the Unit

on page 18.

4 Repeat steps 2 and 3 for the other side of the unit.

5 Insert the unit into the 19-inch rack and secure with

suitable screws (not provided).

6 Reconnect the cables.

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20 INSTALLING THE SWITCH

Montagesatz Anweisungen

Der Switch wird mit zwei Halterungen und vier Schrauben geliefert. Diese werden für den Einbau in einem Baugruppenträger benutzt. Bei der Montage der Baugruppe beachten Sie die Anweisungen aus

“Positioning the Switch” auf page 18.

Der Switch ist eine Baueinheit hoch und passt in einen Standard 19'' (Zoll) Baugruppenträger.

ACHTUNG: Entfernen Sie alle Kabel, bevor Sie fortsetzen. Entfernen Sie die selbstklebenden Polster (Füße) von der Unterseite der Baugruppe, falls diese bereits angebracht sind.

1 Platzieren Sie die Baugruppe aufrecht auf einer harten,

ebenen Fläche mit der Vorderseite Ihnen entgegen.

2 Ordnen Sie eine der Halterungen über den Löchern an

der Seite der Baugruppe an.

3 Stecken Sie zwei der mitgelieferten Schrauben in die

Löcher und drehen Sie diese mit einem geeigneten Schraubendreher fest.

4 Wiederholen Sie die letzten zwei Schritte auf der

anderen Seite der Baugruppe.

5 Führen Sie die Baugruppe in den 19" (Zoll)

Baugruppenträger ein und sichern Sie die Baugruppe mit geeigneten Schrauben. (Nicht im Lieferumfang enthalten).

6 Schließen Sie alle Kabel wieder an.

Placing Units On Top of Each Other

If the Switch units are free-standing, up to six units can be placed one on top of the other. If you are mixing a variety of Baseline and SuperStack units, the smaller units must be positioned at the top.

If you are placing Switch units one on top of the other, you must use the self-adhesive rubber pads supplied. Apply the pads to the underside of each Switch, sticking one in the marked area at each corner.

Place the Switch units on top of each other, ensuring that the pads of the upper unit line up with the recesses of the lower unit.

Supplying Power to the Switch

Power problems can be the cause of serious failures and downtime in your network. Ensure that the power input to your system is clean and free from sags and surges to avoid unforeseen network outages. 3Com recommends that you install power conditioning, especially in areas prone to blackout, power dips and electrical storms.

The unit is intended to be grounded. Ensure it is connected to earth ground during normal use. Installing proper grounding helps to avoid damage from lightning and power surges.

Before powering on the Switch, verify that the network cables and the power cable are securely connected.

Page 21

Supplying Power to the Switch 21

CAUTION: The Switch has no ON/OFF switch. The only way to power on and power off the Switch is by connecting and disconnecting the power cord. This is called “power cycling”.

To power on the Switch:

1 Plug the power cord into the power socket on the rear

panel of the Switch. Refer to “(9) Power Socket”

for more information.

page 15

2 Plug the other end of the power cord into a power

outlet.

When the Switch is powered on, the Power LED lights up. If the Power LED does not light up, refer to “(7)

Power LED” on page 15 for more information.

Checking for Correct Operation

After you power on the Switch, it automatically performs a power-on self-test (POST). During POST, the Power LED on the front panel of the Switch flashes green.

When POST is complete, the Power LED turns green. If the Power LED turns yellow after POST, it means that POST failed and the Switch has entered fail-safe mode.

The following summarizes the possible colors for the Power LED after POST.

Tabl e 8 Power LED POST Indications

Status Meaning

Green The unit is powered on and ready to use.

Yellow Power-on self-test or loopback test failed. The

Off The unit is not receiving power:

Switch is in fail-safe mode. This can happen if a port or ports fail when the Switch was powered on.

■ Verify that the power cord is connected cor-

rectly, and then try powering on the Switch again

■ If the Switch still does not operate, contact

your 3Com network supplier

If POST fails, try the following:

■ Power off the Switch, and then power it on again.

Check the Power LED and see if POST was successfully completed.

■ Reset the Switch. See “Resetting to Factory Defaults”

on page 75.

CAUTION: Resetting the Switch to its factory defaults erases all your settings. You will need to reconfigure the Switch after you reset it.

If these do not resolve the issue:

■ Check the 3Com Knowledgebase for a solution. To

visit the 3Com Knowledgebase Web site, start your Web browser, and then enter

http://knowledgebase.3Com.com.

■ Contact your 3Com network supplier for assistance.

Page 22

22 INSTALLING THE SWITCH

Using SFP Tranceivers

The following sections describe how to insert an SFP transceiver into an SFP slot.

SFP transceivers are hot-insertable and hot-swappable. You can remove them from and insert them into any SFP port without having to power down the Switch.

Approved SFP Transceivers

The following list of approved SFP transceivers is correct at the time of publication:

■ 3CSFP91 SFP (SX)

■ 3CSFP92 SFP (LX)

To access the latest list of approved SFP transceivers for the Switch on the 3Com Web site, enter this URL into your Internet browser:

http://www.3Com.com

3Com recommends using 3Com SFPs in the Switch. If you insert an SFP transceiver that is not supported, the Switch will not recognize it.

■ 1000BASE-SX SFP transceiver

Use this transceiver to connect the Switch directly to a multimode fiber-optic cable.

■ 1000BASE-LX SFP transceiver

Use this transceiver to connect the Switch directly to a single mode fiber-optic cable or to multimode fiber using a conditioned launch cable.

If the SFP transceiver is faulty, it will not operate within the Switch. See “Troubleshooting” on page 75

To activate the SFP port:

1 Hold the transceiver so that the fiber connector is

toward you and the product label is visible, as shown in

Figure 5. Ensure the wire release lever is closed (in the

upright position).

Inserting an SFP Transceiver

To be recognized as valid, the SFP transceiver must have the following characteristics:

■ 1000BASE-SX or 1000BASE-LX media type:

Page 23

Performing Spot Checks 23

Figure 5 Inserting an SFP Transceiver

2 Gently slide the transceiver into the SFP slot until it

clicks into place.

CAUTION: SFP transceivers are keyed and can be properly inserted only one way. If the transceiver does not click when you insert it, remove it, turn it over, and reinsert it.

3 Remove the plastic protective cover, if fitted.

4 Connect the fiber cable.

5 Attach a male duplex LC connector on the network

cable into the duplex LC connector on the transceiver.

6 Connect the other end of the cable to a device fitted

with an appropriate Gigabit Ethernet connection.

7 Check the Module Active LEDs on the front of the

Switch to ensure that the SFP transceiver is operating correctly.

Removing an SFP Transceiver

Removing an SFP transceiver does not require powering off the Switch.

To remove an SFP transceiver:

1 Disconnect the cable from the transceiver.

2 Move the wire release lever downwards until it is

pointing toward you.

3 Pull the wire release lever toward you to release the

catch mechanism.

The SFP transceiver should slide out easily.

Performing Spot Checks

At frequent intervals, you should visually check the Switch. Regular checks can give you an early warning of a possible failure; any problems can then be attended to when there will be least effect on users.

3Com recommends periodically checking the items listed in Ta b l e 9 .

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24 INSTALLING THE SWITCH

Tabl e 9 Items to Check

Cabling Check that all external cabling connec-

Cooling fan (3CBLSF26PWR only)

tions are secure and that no cables are pulled taut.

Where possible, check that the cooling fan is operating by listening to the unit. The fan is fitted near to the front right hand side of the unit (when viewed from the front).

If you experience any problems operating the Switch, refer to “Troubleshooting”

on page 75.

Page 25

CONNECTING TO THE WEB INTERFACE

The Switch has a built-in Web interface that you can use to set the admin password, change the IP address that is assigned to the Switch, and configure its advanced settings.

If you only want the Switch to function as a basic layer 2 switch, you do not need to access the Web interface and configure the Switch.

This chapter provides information on how to gain access to the Web interface using the Discovery application. It also introduces the menu items and buttons that are available on the Web interface.

The following topics are covered:

■ Requirements for Accessing the Web Interface

■ Using the Console Command Line Interface (CLI)

■ Logging On to the Web Interface

■ Navigating the Web Interface

■ Accessing the Switch using the 3Com Switch Detect

Application

The Switch support the following browsers:

■ Microsoft Internet Explorer (V6.0 and subsequent

releases)

■ Mozilla Firefox (V2.0 and subsequent releases)

■ Netscape (V7.0 and subsequent releases)

Requirements for Accessing the Web Interface

To connect to the Web interface, you need one or more of the following:

■ The console cable that was supplied with your

Switch.

■ The 3Com Switch Detect application, that is

included on the CD-ROM that was supplied with your Switch.

■ A computer that is connected to the Switch and that

has a Web browser.

Using the Console Command Line Interface (CLI)

In order to connect to the Web interface of the Switch, it is necessary to know its IP address. The IP addressing mode of the Switch is covered in Section 4 (Administration/IP Setup on page 37

). In summary, the

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26 CHAPTER 3: CONNECTING TO THE WEB INTERFACE

switch will try to obtain an IP address from a DHCP server (assuming the Switch is connected into a network where one is available). If there is no DHCP server available, or you are configuring the Switch in a stand-alone mode, the Switch will allocate itself an “Auto IP” address of 169.254.xx.yy. These last two numbers are taken from the last two numbers of the MAC address. This default IP address can be seen on the label attached to the top cover of your Switch.

In order to see the IP address that has been allocated to the Switch by a DHCP server, or to manually assign one, it is necessary to use the console interface. The CLI Command Reference Guide is covered in Appendix D

Connect the supplied console cable to the console socket, located on the front panel of the Switch. This should be connected to a COM port on your PC (or MAC). Configure a suitable terminal emulator application for 38,400 baud, 8 data bits, no parity and 1 stop bit. Flow control should be disabled.

When the Switch has completed its power up sequence and is ready to operate, pressing the carridge return on your keyboard will result in a prompt on the console interface. Enter the username admin with no password. You will now be presented with a short menu of commands.

Enter summary to display the basic settings for the Switch. Included in this information is:

■ The IP address,

■ Subnet mask and

■ Default gateway

The Switch will take up to two minutes to try to obtain an IP address. During this time the above addresses will be displayed as 0.0.0.0. Only after this period if the Switch has not been able to obtain an IP address, will you see information similar to that shown in Figure 6

Figure 6 CLI Summary with Default IP Address

If the Switch has obtained a DHCP lease, the IP address will be shown. Make a note of it for use when you are ready to use your Web browser to connect to the Switch.

If the 169.254.xx.yy address is not suitable, you can change to a manually assigned IP address by entering ipsetup manual and then entering the required values after the prompts. Enter 1 in the VLAN ID. Enter

Page 27

Logging On to the Web Interface 27

summary to display the new IP settings. Figure 7 shows

what you should expect to see.

Note that when a manual IP address has been assigned it will not revert back to the DHCP mode on subsequent re-boots.

You will now know either the DHCP or manual IP address and you can now move on to using the Web interface.

Figure 7 CLI Summary with Assigned IP Address

Logging On to the Web Interface

Using the IP address you have obtained in the previous section, enter this into the URL field of your preferred Web browser. There is no need to add http:// before the

IP address. After the Web interface loads in your Web browser, the first page that appears is the logon screen. On this screen, you need to enter the administration user name and password to gain access to the Web interface.

The browser’s address bar also displays the IP address that the Switch is currently using.

Figure 8 Logon Dialog Box

To log on to the Web interface:

1 In User name, type admin.

2 Leave the Password field blank.

3 Click OK.

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28 CHAPTER 3: CONNECTING TO THE WEB INTERFACE

Navigating the Web Interface

The Web interface has been designed to enable you to easily perform advanced configuration tasks and view information about the Switch.

Buttons

Depending on the screen that is currently displayed, the following buttons may appear:

■ Apply – Click to save and apply any changes that

you have made

■ Cancel – Click to discard any unsaved changes

Port Status

There is an image of the Switch’s front panel in the Device View page, which indicates ports that are currently in use.

To configure a port, click the port on the image for the following configuration options:

■ View detailed port information

■ Configure the port settings

■ View port statistics

Accessing the Switch using the 3Com Switch Detect Application

The 3Com Switch Detect application works by automatically locating your Switch, establishing what IP address it is using and then launching your default web browser to connect directly to it.

The application will only locate your Switch if it is on the same subnet as the PC on which the application is running. It will not be able to locate your Switch if there is a router between your PC and the Switch. The application is only designed to run on Windows operating systems.

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32 CHAPTER 3: CONNECTING TO THE WEB INTERFACE

Running the 3Com Switch Detect Application

The 3Com Baseline Switch CD-ROM contains, in addition to the documentation, the 3Com Switch Detect Application.

To use 3Com Switch Detect to connect to the Web interface of your Switch, do the following:

1 On the computer that is connected to your Switch

(either directly or on a network that is on the same subnet), insert the CD-ROM into its CD drive.

If you have autorun enabled, you will be presented with a menu showing the contents of the CD-ROM. Select the 3Com Detect Application link to install the utility. Follow the onscreen instructions.

If the auto-run program does not start, you should browse to your CD-ROM drive, go to the /switch detect directory and double click on setup.exe. Follow the prompts that will take you through the installation process.

Once installed, the 3Com Switch Detect Application can be accessed from the Windows Start/Programs list.

When the 3Com Detect application starts, you will be see the Welcome Screen (Figure 12

Figure 12 The 3Com Switch Detect Welcome Screen

2 If the computer has multiple network adapters, select

the adapter that connects the computer to the network or Switch, click "Next."

3 You will then be offered the choice of searching the

same subnet that your PC is on for a connected switch (default), or specifying an IP range. Note that specifying a large range may take some time for the search to complete.

Page 33

Accessing the Switch using the 3Com Switch Detect Application 33

Figure 13 The 3Com Switch Detect Search Screen

4 Once your Switch or Switches have been located, you

will be presented with a list (Figure 14

). Select the switch to which you want to connect and click on "Open." Your default Web browser will open and connect to the home page of the Switch.

Figure 14 The 3Com Switch Detect Discovered Devices

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34 CHAPTER 3: CONNECTING TO THE WEB INTERFACE

Page 35

CONFIGURING THE SWITCH FROM THE WEB INTERFACE

This chapter provides information on how to configure the Switch’s advanced features. Topics include:

■ Device Summary Information

■ Administration Settings

■ Configuring VLANs

■ Configuring Port Settings

■ Security

■ Monitoring

Configuration Overview

The Switch is shipped ready for use. If you only want the Switch to function as a basic Layer 2 switch, you do not need to access the Web interface and configure the Switch.

You only need to access the Web interface if you want to:

■ Set the administration password to the Web

interface

■ Assign an IP address to the Switch

■ Configure the Switch’s advanced features

■ Upgrade the firmware

Device Summary Information

The Device Summary screen, which automatically loads after you log on to the Web interface, provides a snapshot of the Switch’s basic settings and versions of current components.

Click Device Summary on the menu. A screen appears with three tabs that include:

■ Device View

■ Polling Interval

■ Color Key

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36 CHAPTER 4: CONFIGURING THE SWITCH FROM THE WEB INTERFACE

Device View

Contains fields that display the system, switch, and management information to identify the Switch. The fields include Product Description, System Location, System Contact, Serial Number, Product 3C Number, MAC Address, Software Version, Unit Uptime, Bootroom Version, and Hardware Version.

Figure 15 Device View

If you request for technical assistance from 3Com Support, you may be asked to print out the information on this screen.

Polling Interval

Enter the interval in seconds you would like the Switch to refresh. (Range: 10 to 180 seconds; 0 to disable polling).

Figure 16 Polling Interval

To set the polling interval:

1 Click the Device Summary menu, then click Polling

Interval tab.

2 Enter a number between 10 to 180 seconds for the

polling interval. Enter a 0 to disable polling.

Page 37

Administration Settings 37

Color Key

Description of the color coding.

Figure 17 Color Key

Administration Settings

The Administration menu includes eight administration items:

■ IP Setup

■ Backup & Restore

■ Firmware Upgrade

■ Reset

■ System Access

■ System Name

■ System Time

■ SNMP

Modifying the IP Address Settings

To enable devices on the network to communicate with the Switch, you need to assign an IP address to it — either by DHCP or by assigning a static IP address.

To enable devices on the network to communicate with the Switch, the Switch will either obtain an IP address from a DHCP server (default operation), or if this is not successful, will allocate itself an IP address. You can use the console interface or the 3Com Switch Detect application (with certain limitations) to see what IP address the Switch will use.

Automatic IP Configuration

When you power on the Switch for the first time, it will, for a period of approximately 2 minutes, automatically request an IP address from a DHCP server. This is referred to as auto mode. If at the end of this period there has been no response from the DHCP server (if one is present in the network), it will allocate itself an Auto IP address.

The Switch will use the default IP address 169.254.x.y, where x and y are the last two bytes of its MAC address.

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38 CHAPTER 4: CONFIGURING THE SWITCH FROM THE WEB INTERFACE

IP Setup

To determine the exact IP address that the Switch assigns to itself during auto IP configuration, refer to the label on the top cover of the Switch. This label contains the MAC address and default IP address of the Switch.

For example, if the MAC address is 08004E000102, the IP address would be 169.254.1.2. The Switch also assigns the subnet mask 255.255.0.0 (default class B mask) to itself.

3Com recommends assigning an IP address to the Switch (either by using DHCP or a static IP address) to ensure successful communication between the Switch and other network devices.

Use these settings to change the IP addressing mode and the IP address of the Switch.

Be default, the IP address configuration method will be DHCP. In this mode the Switch will obtain an IP address from a DHCP server. The IP address, subnet mask and default gateway details that have been allocated to the Switch can be seen, but they cannot be altered (greyed out).

To assign a manual IP address, select the manual button and enter your specific details then click on Apply.

If you change the IP address of the Switch it will be necessary to use this new address in the web browser in order to access the Switch at it's new IP address.

Figure 18 IP Setup Screen

Backup Configuration

To save the Switch configuration settings:

1 Click Administration, then Backup & Restore on the

menu. The Backup Configuration screen appears.

Figure 19 Backup Configuration

2 Click OK. You will be prompted to provide a location

where the configuration file will be saved.

Page 39

Administration Settings 39

Restore Configuration

To reload configuration settings that you previously saved to a file:

1 Click Administration, Backup & Restore, then the

Restore Configuration tab. The Restore Configuration

screen appears.

Figure 20 Restore Configuration

2 Click Browse to locate the backup file on your computer

to restore the configuration settings.

3 Click OK to copy the configuration back to the Switch.

For security purposes, restoring the configuration does not change the password.

Firmware Upgrade

The Upgrade facility allows you to install on the Switch any new releases of system firmware that 3Com may make available.

Newer versions of firmware can be downloaded via HTTP and copied to the Switch; the Switch will restart and apply the newer system firmware version.

Figure 21 Upgrade Screen

1 Click Administration, then Firmware Upgrade on the

menu. The Firmware Upgrade screen appears.

2 Once you have downloaded the firmware, use the

Browse button to locate the file on your computer, and then click OK.

You may need to change the file type in the dialog box displayed by your Web browser to *.* to be able to see the file.

The file will be copied to the Switch, and once this has completed, the Switch will restart. Although the upgrade process has been designed to preserve your configuration settings, 3Com recommends that you make a backup of the configuration beforehand, in case the upgrade process fails for any reason (for example, the connection between the computer and the Switch is lost while the new firmware is being copied to the Switch).

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40 CHAPTER 4: CONFIGURING THE SWITCH FROM THE WEB INTERFACE

Reset

A progress screen displays while the upgrade is taking place.

The upgrade procedure can take a few minutes, and is complete when the progress bar has finished running and the Power LED has stopped flashing and is permanently green.

CAUTION: Do not interrupt power to the Switch during the upgrade procedure. If you do, the firmware may be corrupted and the Switch may not start up properly afterwards.

To reset the Switch to factory default settings, click Administration, then Reset on the menu.

Reboot

Clicking on Reboot will reset the Switch (the equivalent of power cycling it). No configuration settings will be lost.

Initialize, keep IP setting

Clicking on Initialize, keep IP setting will return the Switch to the factory default configuration (i.e. any configuration parameters you may have set up will be deleted). However, the IP address of the switch will not be altered, meaning you will not have to go through the process of establishing what IP address the Switch has taken. The Switch shall be reset.

Initialize, discard IP setting

Clicking on Initialize, discard IP setting will return the Switch to the factory default configuration, including the IP address mode which shall be returned to DHCP enabled. The Switch shall be reset.

Selecting any of the 3 options above will result in the Switch resetting. During this period any users connected to the Switch will lose connectivity to the rest of the network.

System Access

Click Administration, then System Access on the menu. A screen appears with four system access tabs:

■ Summary

■ Setup

■ Modify

■ Remove

To prevent unauthorized users from accessing the Web interface and modifying the Switch’s settings, the interface is password-protected.

The default admin account settings are:

■ User name – admin

■ Password – blank (no password)

Page 41

Administration Settings 41

To ensure that unauthorized users do not access the Web interface, 3Com recommends that you set an admin password when you first configure the Switch.

Even if you do not intend to actively manage the Switch, 3Com recommends that you change the password to prevent unauthorized access to your network.

The password can be up to 8 characters long and is case-sensitive.

If you forget the administration password after you set it, refer to “Resetting to Factory Defaults” for information on how to regain access to the Web interface.

on page 75

User Summary

Displays the list of user names and their access level.

Figure 22 User Summary Screen

Create User

This page allows you to create a user and define the access level and password for that user.

Figure 23 Create User Screen

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42 CHAPTER 4: CONFIGURING THE SWITCH FROM THE WEB INTERFACE

Modify User

This page allows you to modify a user’s access level and password.

Figure 24 Modify User Screen

Remove User

To remove a user from the Switch, click on the user name, then click Remove.

Figure 25 Remove User Screen

Page 43

Administration Settings 43

System Name

Use these user definable fields to help identify your switch.

Figure 26 System Name Screen

System Time

Click Administration, then System Time on the menu. This screen allows you to set the system time. You can set the Year, Month, Day, Hours, Minutes, and Seconds.

Figure 27 System Time Screen

SNMP

Simple Network Management Protocol (SNMP) is a communication protocol designed specifically for managing devices on a network. Equipment commonly managed with SNMP includes switches, routers and host computers. SNMP is typically used to configure these devices for proper operation in a network environment, as well as to monitor them to evaluate performance or detect potential problems.

Click Administration, then SNMP on the menu. A screen appears with three tabs:

■ Setup

■ SNMP Add

■ SNMP Remove

Setup

Enable or disable the SNMP Agent Status.

Figure 28 SNMP Setup Screen

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44 CHAPTER 4: CONFIGURING THE SWITCH FROM THE WEB INTERFACE

SNMP Add

This page allows you to create community strings for management access.

Figure 29 SNMP Add Screen

SNMP Remove

This page allows you to remove community strings.

Figure 30 SNMP Remove Screen

Configuring VLANs

A virtual LAN (VLAN) is a collection of network nodes that share the same collision domain, regardless of their physical location or connection point in the network. A VLAN serves as a logical workgroup with no physical barriers, and allows users to share information and resources as though located on the same LAN.

Page 45

Configuring VLANs 45

You can use the Switch to create VLANs to organize any group of ports into separate broadcast domains. VLANs confine broadcast traffic to the originating group and help eliminate broadcast storms in large networks. This also provides for a more secure and cleaner network environment.

You can create up to 256 VLANs, add specific ports to a chosen VLAN (so that the port can only communicate with other ports on the VLAN), or configure a port make it a member of multiple or even all VLANs.

Communication between different VLANs can only take place if they are all connected to a router or layer 3 switch.

The Device menu includes five (or six for 3CBLS26PWR only) items:

■ VLAN

■ Spanning Tree

■ IGMP Snooping and Query

■ Broadcast Storm

■ QoS

■ PoE

VLAN

Click Device, then VLAN on the menu. A screen appears with seven tabs that include:

■ Setup

■ Modify VLAN

■ Modify Port

■ Rename

■ Remove

■ Port Detail

■ VLAN Detail

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46 CHAPTER 4: CONFIGURING THE SWITCH FROM THE WEB INTERFACE

Setup

Use the Setup screen to create VLANs on the Switch. To propagate information about VLAN groups used on this Switch to external devices, you must specify a VLAN ID for each VLAN.

Figure 31 Setup Screen

Available options on the Setup screen include:

■ VLAN ID – ID of configured VLAN (1-4094, no

leading zeroes)

For examples on setting up VLANs, refer to “Sample

VLAN Configurations”.

CAUTION: At least one port must always be an untagged member of VLAN 1 (the management VLAN). If you choose to connect all ports to VLANs other than VLAN 1, you will no longer be able to access the Web

interface. If this happens, you will need to reset the Switch to factory settings.

By default, all ports belong to VLAN 1 as untagged members. However, they can belong to multiple VLANs as tagged members. Also, newly created VLANs will initially have no ports associated with them.

Modify VLAN

Use the Modify VLAN screen to change the VLAN to which a port belongs, and configure the port to communicate with all other VLANs, or a selected VLAN.

Figure 32 Modify VLAN Screen

Page 47

Configuring VLANs 47

1 Enter a set of VLANs or select all VLANs to configure,

then click Select.

2 From the drop down menu, select a VLAN to modify.

3 Select a membership use. Available options for each

port include (only one option can be associated with a single port):

■ Ta gg ed

■ Untagged

■ Not a Member

4 Select ports to associate with the membership, then

click Apply.

Modify Port

Use the Modify Port screen to modify the VLAN membership of a port.

Figure 33 Modify Port Screen

1 Select a membership use. Available options for each

port include (only one option can be associated with a single port):

■ Not a member

■ Ta gg ed

■ Untagged

2 Select a port to associate with the membership.

3 Enter a VLAN to apply these changes to, then click

Apply.

Rename

Use the Rename screen to change the name of a VLAN.

Figure 34 Rename Screen

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48 CHAPTER 4: CONFIGURING THE SWITCH FROM THE WEB INTERFACE

1 Enter a set of VLANs or select all VLANs to add to the

rename list, then click Select.

2 From the list of selected VLANs, choose a VLAN to

rename. Enter a new VLAN name and click Apply.

Remove

Use the Remove screen to remove a VLAN.

Figure 35 Remove Screen

1 Enter a set of VLANs or select all VLANs to add to the

remove list, then click Select.

2 From the list of selected VLANs choose a VLAN to

remove, or click the Select All button to select all the VLANs. Click Remove to remove the VLAN.

Port Detail

Choose a port to display the tagged and untagged VLAN memberships it is associated with.

Figure 36 Port Detail Screen

To delete a VLAN, all port members must first be removed from the VLAN.

Page 49

Configuring VLANs 49

VLAN Detail

Use this screen to display detailed VLAN information.

1 Enter a set of VLANs or select all VLANs to add to the

details list, then click Select.

2 From the drop down menu, choose a VLAN to display

the associated tagged and untagged member ports.

Figure 37 VLAN Detail Screen

Forwarding Tagged/Untagged Frames

Each port on the Switch is capable of passing tagged or untagged frames.

■ When a port receives a tagged frame with a VLAN

ID and the port is a member (untagged or tagged) of that VLAN, the frame is accepted. Otherwise the if the port is not a member of that VLAN, the frame is discarded.

■ When a port receives an untagged frame and the

port is an untagged member of a VLAN, the frame is accepted and assigned to that VLAN ID. Otherwise if the port is not an untagged member of any VLAN, the frame is discarded.

The Switch will only forward a frame to ports that are members (tagged or untagged) of the VLAN to which the frame is assigned. If the port is an untagged member, the egress frame will be stripped of the VLAN tag and forwarded as untagged. However, if the port is a tagged member, the egress frame is forwarded as tagged.

Sample VLAN Configurations

To illustrate how you can segment network devices that are connected to the Switch, the following sample configurations are provided.

The following describes how the Switch will handle tagged and untagged frames.

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50 CHAPTER 4: CONFIGURING THE SWITCH FROM THE WEB INTERFACE

Setting Up Two VLANs on the Same Switch

Figure 38 illustrates how you can set up a simple VLAN

on the Switch using desktop connections.

Figure 38 Desktop VLAN Configuration

Endstations in VLAN 1

Server in VLAN 1

If you want to add ports 1, 3, and 26 to VLAN2 (as shown in Figure 38

), so that the ports on the default VLAN1 and the ports on VLAN2 cannot communicate with each other, do the following:

1 Create a new VLAN and set the VLAN ID to 2. Refer to

“Setup”

for instructions. VLAN1 is the default VLAN

and already exists.

2 Set ports 1, 3, and 26 to associate with the Untagged

membership in VLAN2.

Endstations in VLAN 2

Baseline Switch

Server in VLAN 2

3 Click Apply.

Ports 1, 3, and 26 now belong to VLAN2, and will not communicate with any other ports, unless you add other ports to the VLAN or change the port configuration.

Setting Up VLAN Across Two Switches

This example explains how you can set up a VLAN across two Switches using Ta gg ed ports. This enables ports that are members of the same VLAN (but are on different switches) to communicate, provided that a port on each Switch is set to Tagg ed , and that these ports are connected.

Page 51

Configuring VLANs 51

Figure 39 Tagged VLAN Configuration

To set up the configuration shown in Figure 39, do the following:

1 Create VLAN2 on both Switch 1 and Switch 2. You

need not create VLAN1 since it exists by default.

2 On Switch 1, set the ports that you want to be part of

VLAN2 to Untagged. Set one port (for example, port

16) to Tagg ed.

Click Apply.

3 On Switch 2, set the ports that you want to be part of

VLAN2 to Untagged. Set one port (for example, port 8) to Ta gg ed.

Click Apply.

4 Connect the Tagged port on Switch 1 (in this example,

port 16) to the Tagged port on Switch 2 (in this example, port 8).

Those ports on Switch 1 that are members of VLAN2 can now communicate with those ports on Switch 2 that are members of VLAN2.

Spanning Tree

Spanning tree is a bridge-based system for providing fault tolerance on networks and can be used to detect and disable network loops. The spanning tree ensures that the optimal path is maintained between spanning tree-compliant networked devices by:

■ Disabling redundant paths when the main paths are

operational.

■ Enabling redundant paths if the main paths fail.

Spanning tree uses a distributed algorithm to select a bridging device that serves as the root of the spanning

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52 CHAPTER 4: CONFIGURING THE SWITCH FROM THE WEB INTERFACE

tree network. The bridging device, known as the Root Bridge, generates bridge protocol data units (BPDUs) on all ports at a regular interval, known as the Hello Time. All other spanning tree-compliant devices on the network have a designated Root Port. This is the Port nearest the Root Bridge and it is used for receiving the BPDUs initiated by the Root Bridge. If a bridge does not get a Hello BPDU after a predetermined interval, the bridge assumes that the link to the Root Bridge is down. This bridge will then initiate negotiations with other bridges to reconfigure the network to reestablish a valid network topology.

After all the bridges on the network have determined the configuration of their ports, each bridge only forwards traffic between the Root Port and the ports that are the Designated Bridge Ports for each network segment. All other ports are blocked, which means that they are prevented from forwarding traffic.

Three tabs are available on the Spanning Tree page:

■ Summary

■ Setup

■ Port Setup

Summary

Use the Summary tab to display Status, Edged Port, Link Type, Path Cost, State, or Port Priority for all the ports.

Figure 40 Spanning Tree Summary Screen

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Configuring VLANs 53

Setup

To use spanning tree, use the Setup tab and choose Enabled from the State drop down menu, fill in the setup parameters, and click Apply.

Figure 41 Spanning Tree Setup Screen

Port Setup

This administrative tool supports the configuration of the Switch to forward, or block and discard 802.1D spanning tree BPDU packets.

Spanning tree is a bridge-based system for providing fault tolerance on networks and can be used to detect and disable network loops. The spanning tree ensures

that the optimal path is maintained between spanning tree-compliant networked devices by:

■ Disabling redundant paths when the main paths are

operational.

■ Enabling redundant paths if the main paths fail.

Spanning tree uses a distributed algorithm to select a bridging device that serves as the root of the spanning tree network. The bridging device, known as the Root Bridge, generates BPDUs (Bridge Protocol Data Units) on all ports at a regular interval, known as the Hello Time. All other spanning tree-compliant devices on the network have a designated Root Port. This is the Port nearest the Root Bridge and it is used for receiving the BPDUs initiated by the Root Bridge. If a bridge does not get a Hello BPDU after a predetermined interval, the bridge assumes that the link to the Root Bridge is down. This bridge will then initiate negotiations with other bridges to reconfigure the network to re-establish a valid network topology.

Use the Port Setup tab to configure the spanning tree settings for each port. The following options are available:

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54 CHAPTER 4: CONFIGURING THE SWITCH FROM THE WEB INTERFACE

■ Status – Enables and disables spanning tree for the

port.

■ Edged Port – Enables and disables edged port for

the port.

■ Link Type – Choose between Point-to-Point, Shared,

or Auto for the link type.

■ Path Cost – The path cost is used to determine the

best path between devices. The path cost method is used to determine the range of values that can be assigned to each interface.

■ Port Priority – 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.

If you modify any of these settings, click Apply to save your changes.

Figure 42 Spanning Tree Port Setup Screen

IGMP Snooping & Query

This switch uses IGMP (Internet Group Management Protocol) to query for any attached hosts that want to receive a specific multicast service. It identifies the ports containing hosts requesting to join the service and sends data out to those ports only. It then propagates the service request up to any neighboring multicast switch/router to ensure that it will continue to receive the multicast service. This procedure is called multicast filtering.

The purpose of IP multicast filtering is to optimize a switched network’s performance, so multicast packets will only be forwarded to those ports containing multicast group hosts or multicast routers/switches, instead of flooding traffic to all ports in the subnet (VLAN).

Choose Enabled or Disabled from the IGMP Snooping Mode drop down menu.

Figure 43 IGMP Snooping & Query Setup Screen

Page 55

Configuring VLANs 55

Broadcast Storm

A broadcast storm occurs when an incorrect packet is sent out on a network, causing most hosts to respond all at once and typically with wrong answers that start the process over again. Broadcast storms use substantial network bandwidth and may cause network time-outs.

Two tabs are available on the Broadcast Storm page:

■ Summary

■ Modify

Summary

Use the Summary tab to display the broadcast mode and rate for all the ports.

Figure 44 Broadcast Storm Summary Screen

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56 CHAPTER 4: CONFIGURING THE SWITCH FROM THE WEB INTERFACE

Modify

Use the Modify tab to set the Switch’s broadcast storm control and threshold limits.

The settings include:

■ Status – Enables and disables broadcast storm

control.

■ Packet Rate Threshold – Sets the broadcast storm

threshold (64 to 1000000 kilobits per second).

Figure 45 Broadcast Storm Modify Screen

QoS VoIP Traffic Settings

Using the Web interface, you can configure the Voice over Internet Protocol (VoIP) settings.

The QoS VoIP Traffic Setting menu includes six tabs:

■ Summary

■ Setup

■ Port Setup

■ Port Detail

■ OUI Summary

■ OUI Modify

Summary

Use the Summary tab to display the Voice VLAN settings for all the ports.

Figure 46 QoS VoIP Summary Screen

Page 57

Setup

Use the Setup tab to configure the global settings for the Voice VLAN. The following options are available:

■ Voice VLAN Status – Enable or disable Voice VLAN

for the switch.

■ Voice VLAN ID – Input the Voice VLAN ID for the

switch.

■ Voice VLAN Aging Time – Input the aging time.

You must first create a VLAN from the VLAN Setup page before you can assign and configure a Voice VLAN.

Figure 47 QoS VoIP Setup Screen

Port Setup

Use the Port Setup tab to configure the port or trunk setting for Voice VLAN. The following options are available:

■ Voice VLAN Port Mode– Select between None,

Manual, or Auto.

Configuring VLANs 57

■ Voice VLAN Port Security – Enable or disable the

security.

To configure the Voice VLAN settings for ports:

1 Select Voice VLAN Mode, and Security settings.

2 Select the ports you would like to apply these settings

to.

3 Click Apply.

Figure 48 QoS Port Setup Screen

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58 CHAPTER 4: CONFIGURING THE SWITCH FROM THE WEB INTERFACE

Port Detail

Use the Port Detail tab to display the Voice VLAN information for selected ports.

Figure 49 QoS Port Detail Screen

OUI Summary

Use the OUI Summary tab to display the list of Organizational Unique Identifier for a company and their description.

Figure 50 QoS OUI Summary Screen

OUI Add

Use the OUI Modify tab to add to the list of Organizational Unique Identifier. The following options are available:

■ Telephony OUI – Input a new company identifier to

add to the list.

■ Description – Input a description for the new

company identifier.

To add to the OUI list:

1 Enter a Telephony OUI and description.

2 Click Add.

To remove an OUI from the list:

1 Select a Telephony OUI from the list.

2 Click Remove.

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Configuring VLANs 59

Figure 51 QoS OUI Modify Screen

PoE (3CBLSF26-PWR only)

Click Device, then PoE on the menu. A screen appears with two tabs that include:

■ Summary

■ Setup

Summary

Use the Summary tab to display the device and port PoE settings.

Figure 52 PoE Summary Screen

Setup

Use the Setup tab to configure the device and port PoE settings. The settings include:

■ PoE State – Enables and disables PoE for the switch.

■ Auto – Allows the switch to manage the PoE budget

for selected ports.

■ Guarantee – Manually input the maximum power

you would like a connected device to receive. Note that this does not mean that the port has priority over other ports. (Range: 3 - 29.6 Watts)

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60 CHAPTER 4: CONFIGURING THE SWITCH FROM THE WEB INTERFACE

Note that the Switch operates a port based PoE priority scheme. Lower numbered ports have priority over higher numbered ones. If you need to ensure that critical devices get power where you are likely to exceed the total power budget available, you should connect these to low port numbers and ensure these ports have their Guarantee power set.

Figure 53 PoE Setup Screen

Configuring Port Settings

Using the Web interface, you can configure the speed/duplex, flow control, and link aggregation settings of each port. You can also view the current connection status of each port or shut down or disable ports.

The Port menu includes three items:

■ Administration

■ Link Aggregation

■ Statistics

Administration

Three tabs are available on the Port Administration page:

■ Summary

■ Detail

■ Setup

Summary

Use the Summary tab to display Port State, Flow Control, Speed, Default VLAN ID, and Duplex for all the ports.

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Configuring Port Settings 61

Figure 54 Port Administration Summary Screen

Detail

Use the Detail tab to display detailed port setting information for a port.

Figure 55 Port Administration Detail Screen

Setup

Use the Setup tab to configure the port settings. The following options are available:

■ Port State – Enables and disables the port.

■ Flow Control – Enables and disables flow control on

the port. When flow control is enabled for the port, the Switch regulates the packet flow so that a sending device does not transmit more packets than a receiving device can process. If flow control is

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62 CHAPTER 4: CONFIGURING THE SWITCH FROM THE WEB INTERFACE

disabled, packets may be dropped under certain periods of high traffic.

Flow control is disabled by default.

■ Speed – Sets the speed mode of the port. Available

options include auto, 10, 100, and 1000. For 1000 Mbps connections, see “Speed/Duplex for 1000

Mbps Connections” below.

Auto (or autonegotiation) sets the optimum combination of speed and duplex that can be supported by both ends of the link.

■ Duplex – Sets the duplex mode of the port. Available

options include Auto, Half, and Full.

CAUTION: It is advised not to enable Flow Control on ports that will be connected to telephony and other time sensitive traffic as it may hamper the QoS performance.

If you modify any of these settings, click Apply to save your changes.

Figure 56 Port Administration Setup Screen

Speed/Duplex for 1000 Mbps Connections

You cannot preset the speed to 1000 Mbps. To run a port at 1000 Mbps, you must enable autonegotiation for the port. When autonegotiation is enabled, the Switch will automatically connect at 1000 Mbps, providing the connected device also supports this speed.

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Configuring Port Settings 63

1000 Mbps connections are always full-duplex. Half-duplex connections are only available for 10 Mbps and 100 Mbps settings.

CAUTION: Before manually setting a port to full-duplex, verify that the device connected to the port is also manually set to the same speed and duplex setting. If connecting link partners are left to autonegotiate for a link manually set on this switch to full-duplex, they will always negotiate to half-duplex, resulting in a duplex mismatch. This can result in a significant reduction in network performance. If you are unsure of how to configure the speed/duplex setting, simply enable autonegotiation for the port.

You cannot modify the speed/duplex settings of ports that are members of a trunk or aggregated link.

Supported SFP transceivers only operate at 1000 Mbps full-duplex. Inserting an SFP transceiver into a Gigabit port only disables the corresponding RJ-45 port when there is link on the SFP transceiver.

Disabling a port that is delivering power will not disable the power being delivered to a connected device.

Link Aggregation

Link aggregation, also called “trunking”, refers to bonding multiple ports into a single group to effectively combine the bandwidth into a single connection or a “trunk”. If you are connecting the Switch to another

switch or to an Internet backbone, you can aggregate links on the Switch to increase throughput and prevent packet loopback between switches.

For link aggregation to work, the trunks must be configured on both ends (switches).

Four tabs are available on the Port Link Aggregation page:

■ Summary

■ Create

■ Modify

■ Remove

Guidelines for Creating Trunks

■ Any port on the Switch can be used for creating a

trunk.

■ The Switch supports a maximum of four trunks.

■ Each trunk may contain up to eight members.

■ A port may only be a member of one trunk at any

one time.

■ All ports in a trunk must be configured in an

identical manner, including communication mode (that is, speed, duplex mode and flow control).

■ Both 10/100 and Gigabit ports cannot be combined

as members in a single trunk.

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64 CHAPTER 4: CONFIGURING THE SWITCH FROM THE WEB INTERFACE

Summary

Use the Summary tab to display a list of configured link aggregation Group IDs and the associated member Ports.

Figure 57 Link Aggregation Summary Screen

Create

Use the Create tab to add ports to a group membership.

Figure 58 Link Aggregation Create Screen

To create a new link aggregation group:

1 Enter a link aggregation group ID in the text box.

2 Select the ports to add to the goup.

3 Click Apply.

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Configuring Port Settings 65

Modify

Use the Modify tab to reassign member ports of a link aggregation group.

Figure 59 Link Aggregation Modify Screen

To modify a link aggregation group:

1 Select the aggregation group to modify, then click

Select.

2 Select the ports to add to, and/or remove from, the

goup.

3 Click Apply.

Remove

Use the Remove tab to delete a link aggregation group.

Figure 60 Link Aggregation Remove Screen

To remove a link aggregation group:

1 From the link aggregation group list, select the

aggregated group to remove.

2 Click Remove.

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66 CHAPTER 4: CONFIGURING THE SWITCH FROM THE WEB INTERFACE

Statistics

The Switch allows you to display detailed statistics of one, several, or all ports.

Figure 61 Port Statistics Screen

To display statistics for a port:

1 Access the Web interface. Click Port, then Statistics on

the menu. The Port Statistics Screen appears.

2 Select one port, multiple ports, or choose Select All,

and enter a refresh interval.

3 Click Apply.

Click Select None to remove all ports statistics.

Click Clear All Counters to set all port statistic counters back to zero.

Security

Using the Web interface, you can configure the RADIUS Client and 802.1X settings.

The Security menu includes two items:

■ RADIUS Client

■ 802.1X Settings

RADIUS Client

Remote Authentication Dial-in User Service (RADIUS) is a logon authentication protocol that uses software running on a central server to control access to RADIUS-aware devices on the network. An authentication server contains a database of multiple user name/password pairs with associated privilege levels for each user or group that require management access to a switch.

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Security 67

Configure

The following parameters are available:

■ Max Retries – Sets the number of retries of sending

authentication requests.

■ Timeout – Sets the interval between sending

authentication requests.

■ IP Address – The IP address of the RADIUS server.

■ UDP port – The RADIUS server UDP port used for

authentication messages.

■ Key – Sets the RADIUS encryption key.

A primary RADIUS server IP address must be specified for the Switch to implement IEEE 802.1X security. A secondary RADIUS server may also be specified as a backup should the primary server fail or become inaccessible.

After you have filled in the parameters, click Apply to save your changes.

Figure 62 RADIUS Client Configure Screen

802.1X Settings

The IEEE 802.1X standard defines a port-based access control procedure that prevents unauthorized access to a network by requiring users to first submit credentials for authentication.

The 802.1X settings menu includes two tabs:

■ Summary

■ Setup

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68 CHAPTER 4: CONFIGURING THE SWITCH FROM THE WEB INTERFACE

Summary

Use the Summary tab to display the 802.1X authentication settings for all the ports.

Figure 63 802.1X Summary Screen

Setup

Use the Setup tab to configure the 802.1X authenticaion settings. The following fields are available:

■ System Authentication – Sets the global setting for

802.1X. (Default: Disabled)

■ Operation Mode – Allows single or multiple hosts

(clients) to connect to an 802.1X-authorized port. (Options: Single-Host, Multi-Host; Default: Single-Host)

■ Single-Host: Only one host may authenticate and

pass traffic on a port.

■ Multi-Host: If at least one host authenticates on

the port, the port is "unlocked" and other, non authenticated hosts can send and receive data.

■ Mode – Sets the authentication mode to one of the

following options:

■ Auto – Requires a dot1x-aware client to be

authorized by the authentication server. Clients that are not dot1x-aware will be denied access.

■ Force-Authorized – Forces the port to grant

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

■ Force-Unauthorized – Forces the port to deny

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

■ Maximum Request – Sets the maximum number of

times the switch port will retransmit an EAP request packet to the client before it times out the authentication session. (Range: 1-10; Default 2)

■ Mode Reauthentication – Sets the client to be

re-authenticated after the interval specified by the Re-authentication Period. Re-authentication can be

Page 69

Monitoring 69

used to detect if a new device is plugged into a switch port. (Default: Disabled)

■ Max Count – The maximum number of hosts that

can connect to a port when the Multi-Host operation mode is selected. (Range: 1-1024; Default: 5)

■ Reauthentication Period – Sets the time period after

which a connected client must be re-authenticated. (Range: 1-65535 seconds; Default: 3600 seconds)

■ Quiet Period – Sets the time that a switch port waits

after the Max Request Count has been exceeded before attempting to acquire a new client. (Range: 1-65535 seconds; Default: 60 seconds)

■ Transmit Period – Sets the time period during an

authentication session that the switch waits before re-transmitting an EAP packet. (Range: 1-65535; Default: 30 seconds)

After you have filled in the parameters, click Apply to save your changes.

Figure 64 802.1X Setup Screen

Monitoring

Using the Web interface, you can display address table information, set up port mirroring, and perform cable diagnostics.

The Monitoring menu includes three items:

■ Address Table

■ Port Mirroring

■ Cable Diagnostics

Address Table

The Switch’s address table contains the MAC addresses learned by monitoring the source address for traffic

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70 CHAPTER 4: CONFIGURING THE SWITCH FROM THE WEB INTERFACE

entering the Switch. You can display the address table to find specific MAC addresses, or view MAC addresses associated with a specific port or VLAN.

The Address Table menu includes two tabs:

■ Summary

■ Port Summary

Summary

Use the Summary tab to display the address table information for all ports.

Clicking on any entry in the address table will copy the entire contents of the address table into the clipboard for use with other applications.

Figure 65 Address Table Summary Screen

Port Summary

Use the Port Summary tab to display the address table information for selected ports.

Figure 66 Address Table Port Summary Screen

Port Mirroring

The Switch allows you to monitor traffic going in and out of a particular port. For traffic monitoring to work, you need to attach a network analyzer to one port and use it to monitor the traffic of other ports on the Switch.

To set up traffic monitoring, you need to set a monitor port (the port that is connected to the analyzer), and a mirror port (the port that is to be monitored). Once the pair is defined, and you enable traffic monitoring, the

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Monitoring 71

Switch takes all the traffic going in or out of the mirror port and copies it to the monitor port.

CAUTION: The monitor port should have a higher bandwidth than the mirror port. Otherwise, the Switch may not be able to copy all traffic effectively during periods of high traffic.

Two tabs are available on the Port Mirroring page:

■ Setup

■ Remove

Setup

Use the Setup tab to create a port mirror session.

Figure 67 Port Mirroring Setup Screen

To set up port mirroring:

1 Connect a network analyzer to a port.

2 Access the Web interface. Click Monitoring, then Port

Mirroring on the menu. The Port Mirroring Setup Screen appears.

3 Click Monitor as the port type, then select the port

number to which you connected the network analyzer. Traffic to or from the selected mirrored port will be forwarded to this port.

4 Click Mirror as the port type, then select the port

number that you want to monitor. Traffic to or from this port will be forwarded to the monitor port.

5 Select Mirror In to monitor a port’s incoming traffic, or

Mirror Out to monitor a port’s outgoing traffic.

6 Click Apply.

Remove

Use the Remove tab to delete a port mirroring session.

Figure 68 Port Mirroring Remove Screen

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72 CHAPTER 4: CONFIGURING THE SWITCH FROM THE WEB INTERFACE

To remove a port mirror session:

1 From the port mirror session list, select the session to

remove.

2 Click Remove.

Cable Diagnostics

The Switch provides a cable diagnostic utility, which helps you detect and resolve issues with the attached cables.

The Cable Diagnostics menu includes two tabs:

■ Summary

■ Diagnostics

Summary

Use the Summary tab to display information on Test Result, Cable Fault Distance, or Last Update for every port on the switch.

Figure 69 Cable Diagnostic Summary Screen

Page 73

Diagnostics

Use the Diagnostics tab to display individual port information on Test Result, Cable Fault Distance (in meters), and Last Update.

Figure 70 Cable Diagnostic Screen

In the example: "0,0", the first digit refers to the length of the transmit pairs. The second digit the length of the receive pairs.

Monitoring 73

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74 CHAPTER 4: CONFIGURING THE SWITCH FROM THE WEB INTERFACE

Page 75

TROUBLESHOOTING

This chapter lists some issues that you may encounter while installing, using, and managing the Switch, with suggested courses of corrective action to take.

If you encounter an issue that is not listed here and you cannot solve it, check the 3Com Knowledgebase at

http://knowledgebase.3com.com before

contacting your local technical support representative.

For more information on how to obtain support for your Switch, refer to Appendix A

Resetting to Factory Defaults

If the Switch does not operate normally or if the firmware becomes corrupted, you can reset the Switch to factory defaults.

Connect to the console interface, as detailed elsewhere in this user guide.

During the power up sequence after the Power On Self Test has completed, the following message will be displayed:

Press Ctrl+C within 5 seconds to get into

FailSafe mode

Do as instructed and wait for the remainder of the switch initialization to complete.

You will then be presented with 4 options:

■ Initialize

■ Password

■ Reboot

■ Upgrade

Selecting Initialize will delete all the stored configuration information, including IP address modes and passwords.

Selecting Password will delete all stored passwords. The default user name will now be admin with no password.

Selecting Reboot will restart the Switch without making any changes

Selecting Upgrade will initiate a firmware download via TFTP. Follow the instructions provided with your TFTP server to upgrade the firmware using this interface.

CAUTION: Resetting the Switch to factory defaults erases all your settings. You will need to reconfigure the Switch after you reset it.

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76 CHAPTER 5: TROUBLESHOOTING

The Switch will perform automatic IP configuration after you reset it. See “

page 37

for more information.

Automatic IP Configuration” on

Forgotten Static IP Address

If you have forgotten the static IP address that you have assigned to the Switch and you need to access the Web interface, you can use the console interface. Use the summary command once you logged in to display the IP settings of the switch. Alternately, use the 3Com Detect application (page 31

) to locate the Switch on your net-

work

Solving LED Issues

This section lists some issues that are related to the LEDs on the front panel of the Switch. For information on basic LED checks, refer to the following topics in

Chapter 1

■ (2) Gigabit Combo Ports (RJ-45/SFP)

■ (4) 10/100BASE-TX Link/Activity Status LEDs

■ (7) Power LED

A link is connected, but the Link/Activity LED for the port is off.

There is a problem with this connection. Verify that:

■ The device being connected to is powered on and

operating correctly.

■ The cable is connected at both ends.

■ The cable is not damaged.

■ If the connection is to a workstation, that the work-

station's network interface is installed and configured correctly.

■ The correct category of cable is being used for the

required link speed. Category 3 cables can be used for 10BASE-T operation only. Category 5 cable is required for 100BASE-TX or 1000BASE-T. 3Com recommends Category 5e or 6 cables for 1000BASE-T operation.

A fiber cable is connected, but the Module Active LED is off.

Verify that:

■ The fiber cable is in good condition.

■ The SFP module is correctly inserted.

■ A 3Com SFP module is being used. Refer to

Approved SFP Transceivers” on page 22 for details.

“

■ The equipment at the far end is installed and cor-

rectly configured.

Page 77

If the Problem Persists 77

The Link/Activity LED is on, but network performance is poor

The Switch supports full-duplex autonegotiation. If the connected device does not support autonegotiation, ensure that it is configured for half-duplex operation only. If the connected device has autonegotiation disabled or overridden, and is configured as full-duplex, the Switch will configure the link as half-duplex, causing a mismatch that will reduce network performance when data is transmitting and receiving simultaneously on the same link.

Ensure that the connected device has either:

■ Autonegotiation enabled, or

■ The ports are configured for half-duplex operation

All ports appear to show continual activity.

There may be broadcast storms on the network. Remove port connections one at a time, waiting a few seconds between each port. If the LEDs go off after removing a port connection, the device that was connected to that port is introducing an excessive amount of broadcast frames to the network. Some pieces of network equipment operate by sending out broadcast frames regularly.

If the Problem Persists

If the problem persists and the unit still does not operate successfully, contact your 3Com network supplier with the following information before returning the unit:

■ Product number and serial number (printed on a

label supplied with the unit).

■ A brief description of the issue

Refer to the documentation that accompanies the device for information on disabling the broadcast operation.

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78 CHAPTER 5: TROUBLESHOOTING

Page 79

OBTAINING SUPPORT FOR YOUR PRODUCT

Register Your Product

Warranty and other service benefits start from the date of purchase, so it is important to register your product quickly to ensure you get full use of the warranty and other service benefits available to you.

Warranty and other service benefits are enabled through product registration. Register your product at http://eSupport.3com.com/. 3Com eSupport services are based on accounts that you create or have authorization to access. First time users must apply for a user name and password that provides access to a number of eSupport features including Product Registration, Repair Services, and Service Request. If you have trouble registering your product, please contact 3Com Global Services for assistance.

Purchase Value-Added Services

To enhance response times or extend warranty benefits, contact 3Com or your authorized 3Com reseller. Value-added services like 3Com ExpressSM and Guardian support, software upgrades, onsite assistance or advance hardware replacement. Experienced engineers

can include 24x7 telephone technical

are available to manage your installation with minimal disruption to your network. Expert assessment and implementation services are offered to fill resource gaps and ensure the success of your networking projects. More information on 3Com maintenance and Professional Services is available at www.3com.com.

Contact your authorized 3Com reseller or 3Com for a complete list of the value-added services available in your area.

Troubleshoot Online

You will find support tools posted on the 3Com Web

www.3com.com/

site at

3Com Knowledgebase helps you troubleshoot 3Com products. This query-based interactive tool is located at

http://knowledgebase.3com.com and

contains thousands of technical solutions written by 3Com support engineers.

Access Software Downloads

Software Updates are the bug fix/maintenance

releases for the version of software initially purchased with the product. In order to access these Software

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80 APPENDIX A: OBTAINING SUPPORT FOR YOUR PRODUCT

Updates you must first register your product on the 3Com Web site at

http://eSupport.3com.com/.

First time users will need to apply for a user name and password. A link to software downloads can be found

http://eSupport.3com.com/, or under the

at Product Support heading at

www.3com.com/

Software Upgrades are the feature releases that follow the software version included with your original product. In order to access upgrades and related documentation you must first purchase a service contract from 3Com or your reseller.

Telephone Technical Support and Repair

To obtain telephone support as part of your warranty and other service benefits, you must first register your product at http://eSupport.3com.com/

When you contact 3Com for assistance, please have the following information ready:

■ Product model name, part number, and serial

number

■ Proof of purchase, if you have not pre-registered

your product

■ A list of system hardware and software, including

revision level

■ Diagnostic error messages

■ Details about recent configuration changes, if

applicable

To send a product directly to 3Com for repair, you must first obtain a return authorization number (RMA). Products sent to 3Com, without authorization numbers clearly marked on the outside of the package, will be returned to the sender unopened, at the sender’s expense. If your product is registered and under warranty, you can obtain an RMA number online at

http://eSupport.3com.com/. First time users

will need to apply for a user name and password.

Contact Us

3Com offers telephone, e-mail and Internet access to technical support and repair services. To access these services for your region, use the appropriate telephone number, URL or e-mail address from the list below.

Telephone numbers are correct at the time of publication. Find a current directory of support telephone numbers posted on the 3Com Web site at

http://csoweb4.3com.com/contactus/

Page 81

Country Telephone Number

Asia, Pacific Rim Telephone Technical Support and Repair

Australia Hong Kong India Indonesia Japan Malaysia New Zealand Philippines

PR of China Singapore South. Korea Ta iw an Thailand

Pakistan Call the U.S. direct by dialing 00 800 01001, then dialing 800 763 6780

Sri Lanka Call the U.S. direct by dialing 02 430 430, then dialing 800 763 6780

Vietnam Call the U.S. direct by dialing 1 201 0288, then dialing 800 763 6780

You can also obtain non-urgent support in this region at this email address apr_technical_support@3com.com Or request a return material authorization number (RMA) by FAX using this number:

email at this email address:

Europe, Middle East, and Africa Telephone Technical Support and Repair

From anywhere in these regions not listed below, call:

1800 075 316 2907 0456 000 800 440 1193 001 803 852 9825 03 3507 5984 1800 812 612 0800 450 454 1800 144 10220 or 029003078 800 810 0504 800 448 1433 080 698 0880 00801 444 318 001 800 441 2152

+61 2 9937 5048, or send an

ap_rma_request@3com.com

+44 1442 435529

Country Telephone Number

From the following countries, call the appropriate number

Austria Belgium Denmark Finland France Germany Hungary Ireland Israel Italy Luxembourg Netherlands Norway Poland Portugal South Africa Spain Sweden Switzerland U.K.

You can also obtain support in this region using this URL:

http://emea.3com.com/support/email.html

You can also obtain non-urgent support in this region at these email addresses:

Technical support and general requests:

customer_support@3com.com

0800 297 468 0800 71429 800 17309 0800 113153 0800 917959 0800 182 1502 06800 12813 1 800 553 117 180 945 3794 800 879489 800 23625 0800 0227788 800 11376 00800 4411 357 800 831416 0800 995 014 900 938 919 020 795 482 0800 553 072 0800 096 3266

Return material authorization: warranty_repair@3com.com Contract requests: emea_contract@3com.com

Page 82

82 APPENDIX A: OBTAINING SUPPORT FOR YOUR PRODUCT

Country Telephone Number

Latin America Telephone Technical Support and Repair

From the Caribbean, Central and South America, call:

Antigua Argentina Aruba Bahamas Barbados Belize Bermuda Bonaire Brazil Cayman Chile Colombia Costa Rica Curacao Ecuador Dominican Republic Guatemala Haiti Honduras Jamaica Martinique Mexico Nicaragua Panama Paraguay Peru Puerto Rico Salvador Trinidad and Tobago Uruguay Venezuela Virgin Islands

1 800 988 2112 0 810 444 3COM 1 800 998 2112 1 800 998 2112 1 800 998 2112 52 5 201 0010 1 800 998 2112 1 800 998 2112 0800 13 3COM 1 800 998 2112 AT&T +800 998 2112 AT&T +800 998 2112 AT&T +800 998 2112 1 800 998 2112 AT&T +800 998 2112 AT&T +800 998 2112 AT&T +800 998 2112 57 1 657 0888 AT&T +800 998 2112 1 800 998 2112 571 657 0888 01 800 849CARE AT&T +800 998 2112 AT&T +800 998 2112 54 11 4894 1888 AT&T +800 998 2112 1 800 998 2112 AT&T +800 998 2112 1 800 998 2112 AT&T +800 998 2112 AT&T +800 998 2112 57 1 657 0888

Country Telephone Number

You can also obtain support in this region using the following:

Spanish speakers, enter the URL:

http://lat.3com.com/lat/support/form.html

Portuguese speakers, enter the URL:

http://lat.3com.com/br/support/form.html

English speakers in Latin America should send e-mail to:

lat_support_anc@3com.com

US and Canada Telephone Technical Support and Repair

1 800 876 3266

Page 83

TECHNICAL INFORMATION

3CBLSF26 Related Standards

The Baseline Switch 2226-SFP Plus has been designed to the following standards:

Functional

MAC Address Safety

EMC Emissions

Immunity

Environmental

Operating Temperature

Storage Temperature

Humidity Standard

IEEE 802.3 (Ethernet), IEEE 802.3u (Fast Ethernet), IEEE 802.3ab and IEEE 802.3z (Gigabit Ethernet), IEEE 802.3x (Flow Control), IEEE 802.1D 1993 (Bridging), IEEE

802.1Q 1998 (Virtual LAN)

8192

UL 60950-1, EN 60950-1, CSA 22.2 #60950-1, IEC 60950-1

EN61000-3-2 & EN61000-3-3, EN 55022 Class A, FCC Part 15 Subpart B Class A, ICES-003 Class A, VCCI Class A, CISPR 22 Class A

EN 55024

0-40 °C (32–104 °F)

-40-70 °C (-40-158 °F)

0-95% (non-condensing)

EN 60068 (IEC 68)—various parts

Physical

Width Depth Height Weight Mounting

Electrical

Power Inlet AC Line Frequency Input Voltage Current Rating Maximum Power

Consumption Maximum Power

Dissipation

44 cm (17.3 in)

17.3 cm (6.8 in)

4.4 cm (1.7 in) or 1U

1.66 kg (3.66 lbs)

Free standing, or 19 inch rack mounted using the mounting kit supplied

IEC 320

50/60 Hz

100–240 VAC (auto range)

1 Amp (maximum)

30 W

102 BTU/hr

Page 84

84 APPENDIX B: TECHNICAL INFORMATION

3CBLSF26PWR Related Standards

The Baseline Switch 2426-PWR Plus has been designed to the following standards:

Functional

MAC Address Safety

EMC Emissions

Immunity

Environmental

Operating Temperature

Storage Temperature

Humidity Standard

IEEE 802.3 (Ethernet), IEEE 802.3u (Fast Ethernet), IEEE 802.3ab and IEEE 802.3z (Gigabit Ethernet), IEEE 802.3x (Flow Control), IEEE 802.1D 1993 (Bridging), IEEE

802.3af (Power over Ethernet), IEEE

802.3at (Power over Ethernet Plus)

8192

UL 60950-1, EN 60950-1, CSA 22.2 #60950-1, IEC 60950-1

EN 61000-3-2 & EN 61000-3-3, EN 55022 Class A, FCC Part 15 Subpart B Class A, ICES-003 Class A, VCCI Class A, CISPR 22 Class A

EN 55024

0-40 °C (32–104 °F)

-40-70 °C (-40-158 °F)

0-95% (non-condensing)

EN 60068 (IEC 68)—various parts

Physical

Width Depth Height Weight Mounting

Electrical

Power Inlet AC Line Frequency Input Voltage Current Rating Maximum Power

Consumption Maximum Power

Dissipation Maximum

Pover-over-Ethernet Budget

44 cm (17.3 in)

23.8 cm (9.4 in)

4.4 cm (1.7 in) or 1U

3.2 kg (7.05 lbs)

Free standing, or 19 inch rack mounted using the mounting kit supplied

IEC 320

50/60 Hz

100–240 VAC (auto range)

3.5 Amp (maximum)

240 W

182 BTU/hr

190 W

Page 85

3CBLSF50 Related Standards 85

3CBLSF50 Related Standards

The Baseline Switch 2250-SFP Plus has been designed to the following standards:

Functional

MAC Address Safety

EMC Emissions

Immunity

Environmental

Operating Temperature

Storage Temperature

Humidity Standard

ISO 8802-3, IEEE 802.3 (Ethernet), IEEE

802.3u (Fast Ethernet), IEEE 802.3ab and IEEE 802.3z (Gigabit Ethernet), IEEE 802.3x (Flow Control), IEEE 802.1D (Bridging)

8192

UL 60950-1, EN 60950-1, CSA 22.2, #60950-1, IEC 60950-1

EN61000-3-2 & EN 61000-3-3, EN 55022, Class A, FCC Part 15, Subpart B Class A, ICES-003 Class A, VCCI Class A, CISPR 22 Class A

EN 55024

0–40 °C (32–104 °F)

-40-70 °C (-40-158 °F)

0–95% (non-condensing)

EN 60068 (IEC 68)—various parts

Physical

Width Depth Height Weight Mounting

Electrical

Power Inlet AC Line Frequency Input Voltage Current Rating Maximum Power

Consumption Maximum Power

Dissipation

440 mm (17.3 in)

215 mm (8.5 in)

41 mm (1.6 in) or 1U

1.9 kgs (4.19 lbs)

Free standing, or 19 inch rack mounted using the mounting kit supplied

IEC 320

50/60 Hz

100–240 VAC (auto range)

1 Amp (maximum)

30 W

184.3 BTU/hr

Page 86

86 APPENDIX B: TECHNICAL INFORMATION

Page 87

PIN-OUTS

Console Cable

A Console cable is an 8-conductor RJ45-to-DB9 cable. One end of the cable has an RJ-45 plug for connecting to the switch’s Console port, and the other end has a DB-9 socket connector for connecting to the serial port on the terminal, as shown in Figure 71.

Figure 71 Console Cable

Direction A

Pos 9

Pos 1

Main label

Direction B

Tabl e 1 Console Cable Pinouts

RJ-45 Signal Direction DB9

(modem)

1 RTS — 7 8

2 DTR — 4 6

3 TXD — 3 2

4 CD — 1 5

5 GND — 5 5

6 RXD — 2 3

7 DSR — 6 4

8 RTS — 8 7

DB9 (console)

Page 88

88 APPENDIX C: PIN-OUTS

Null Modem Cable

RJ-45 to RS-232 25-pin

Cable connector: RJ-45 female

Screen

Shell 3

TxD

RxD

Ground

RTS

CTS

DSR

DCD

DTR

PC-AT Serial Cable

RJ-45 to 9-pin

Cable connector: RJ-45 female

Screen

Shell

DTR

TxD

RxD

CTS

8 5

Ground

DSR

RTS

DCD

PC/Terminal Cable connector: 25-pin male/female

1 3 2 7 4 20

6 8

PC-AT Serial Port Cable connector: 9-pin female

Shell 1 2 3 4 5

7 8

Screen

RxD TxD Ground RTS DTR

CTS

DSR DCD

Screen

DCD RxD TxD DTR Ground

DSR

RTS CTS

only requiredif screen

always required

required forhandshake

only requiredif screen

Required for handshake

Always required

required forhandshake

always required

required forhandshake

Modem Cable

RJ-45 to RS-232 25-pin

Cable connector: RJ-45 female

Screen

TxD RxD RTS CTS DSR

Ground

DCD DTR

Shell 3 2 7 8 6

1 4

RS-232 Modem Port Cable connector: 25-pin male

Screen

1 2

TxD

RxD

RTS

CTS DSR

Ground

7 8

DCD DTR

Page 89

Ethernet Port RJ-45 Pin Assignments 89

Ethernet Port RJ-45 Pin Assignments

Tabl e 2 RJ-45 MDI Pin Assignments

Pin Number 10/100 1000

Ports configured as MDI

1 Transm i t Data + Bidirectional Data A+

2 Transm i t Data - Bidirectional Data A-

3 Receive Data + Bidirectional Data B+

4 Not assigned Bidirectional Data C+

5 Not assigned Bidirectional Data C-

6 Receive Data – Bidirectional Data B-

7 Not assigned Bidirectional Data D+

8 Not assigned Bidirectional Data D-

Tabl e 3 RJ-45 MDIX Pin Assignments

Pin Number 10/100 1000

Ports configured as MDIX

1 Receive Data + Bidirectional Data B+

2 Receive Data - Bidirectional Data B-

3 Transmit Data + Bidirectional Data A+

4 Not assigned Bidirectional Data D+

5 Not assigned Bidirectional Data D-

6 Transmit Data - Bidirectional Data A-

7 Not assigned Bidirectional Data C+

8 Not assigned Bidirectional Data C-

Page 90

90 APPENDIX C: PIN-OUTS

Page 91

3COM CLI REFERENCE GUIDE

This section describes using the Command Line Interface (CLI) to manage the device. The device is managed through the CLI from a direct connection to the device console port.

Getting Started with the Command Line Interface

Using the CLI, network managers enter configuration commands and parameters to configure the device. Using the CLI is very similar to entering commands on a UNIX system.

Console Port

To start using the CLI via a console port:

1 Connect the RJ-45 cable to the Console port of the

switch to the serial port of the terminal or computer running the terminal emulation application.

2 Set the baud rate to 38400.

3 Set the data format to 8 data bits, 1 stop bit, and no

parity.

4 Set Flow Control to none.

5 Under Properties, select VT100 for Emulation mode.

6 Select Terminal keys for Function, Arrow, and Ctrl

keys. Ensure that the setting is for Terminal keys (not Windows keys).

Logging on to the CLI

The Login process requires a User Name and Password. The default user name for first time configuration is admin. No password is required. User names and passwords are case sensitive.

To logon to the CLI Interface:

1 Press Enter without typing in a username. The Login

prompt displays:

2 Enter your User Name at the Login prompt.

3 Press Enter. The Password prompt displays:

Password:

The Login information is verified, and displays the following CLI menu:

Select menu option#

Page 92

92 APPENDIX D: 3COM CLI REFERENCE GUIDE

If the password is invalid, the following message appears and Login process restarts.

Incorrect Password

Automatic Logout

The user session is automatically terminated after 30 minutes in which no device configuration activity has occurred. The following message is displayed:

Session closed by automatic logout.

Concurrent CLI Sessions

The command line interface supports one CLI session.

CLI Commands

This Command section contains the following commands:

■ ?

■ Ping

■ Summary

■ ipSetup

■ Upgrade

■ Initialize

■ Reboot

■ Logout

■ Password

Page 93

CLI Commands 93

The ? command displays a list of CLI commands on the device.

Syntax

Default Configuration

This command has no default configuration.

User Guidelines

There are no user guidelines for this command.

Example

The following displays the list presented for the ? command:

Select menu option#?

This command line console allows you to configure and manage your system by making selections from the displayed menu.

You can enter successive menu choices on the same line instead of pressing the [Return] key after each selection. For example, if you are at the top level menu and wish to display the system configuration, enter "system summary".

To specify a menu choice you need only type a unique abbreviation.

For example, "system summary" can be abbreviated "sy s".

To return to a previous menu, type "q".

To return to the top level menu or abort an action, press the [Esc] key.

-- Enter <CR> to continue --:

Menu options: --------3Com Baseline Switch 2426-PWR Plus-----------------------

? - Displays Help information

initialize - Reset the device to factory default, except IP.

ipSetup - Configures IP address.

logout - Logout from this session.

ping - Ping a remote station.

password - Change password.

reboot - Power cycles the device.

summary - Summarises IP setup and software versions.

upgrade - Software upgrade over TFTP.

Type ? for help.

-----------------3Com Baseli (1)--------------

Select menu option:

Page 94

94 APPENDIX D: 3COM CLI REFERENCE GUIDE

Ping

The Ping command sends ICMP echo request packets to another node on the network.

Syntax

ping [IP address | URL| hostname]

Parameters

■ IP Address — IP address to ping.

■ URL — URL address to ping.

■ hostname — hostname to ping. (Range: 1 - 158

characters)

Default Configuration

This command has no default configuration.

User Guidelines

There are no user guidelines for this command.

Example

The following displays the result of a Ping command:

Select menu option: ping 192.168.1.9

Starting ping, resolution of displayed time is 10 milli-seconds.

Response from 192.168.1.9: TTL=128. time=20ms

Select menu option:

Summary

The Summary command displays the current IP configuration and software versions running on the device. It is intended for devices that support separate runtime and bootcode Images.

Syntax

Summary

Default Configuration

This command has no default configuration.

User Guidelines

There are no user guidelines for this command.

Example

The following displays current IP configuration and software versions running on the device:

Select menu option: summary

IP Method: manual

IP address: 192.168.1.1

Subnet mask: 255.255.255.0

Default gateway: 192.168.1.254

Runtime version: 0.00.00.11

Bootcode version: 12.26.13.43

Select menu option:

Page 95

CLI Commands 95

ipSetup

The ipSetup command allows the user to define an IP address on the device either manually or via a DHCP server.

Syntax

ipSetup

Default Configuration

No default IP address is defined for interfaces.

User Guidelines

When the IP address is configured manually by the user, the address must be in the range 0.0.0.0 through

223.255.255.255.

IP Addresses configured beyond the range of 224.0.0.0 are defined as multicast, experimental or broadcast addresses.

If a default gateway is configured manually, the IP-address and mask are required to be the same as the gateway-address and mask.

Example

The following example displays an IP address configured manually:

Select menu option: ipSetup

Enter configuration method (auto,manual)[auto]:

manual

Enter IP Address [0.0.0.0 ]:

192.168.1.1

Enter Subnet Mask [255.255.0.0 ]:

255.255.255.0

Enter Default Gateway [192.168.1.254 ]:

Select management VLAN ID (1)[1]:

This operation may take up to 30 seconds.

Select menu option:

The following example displays an IP address obtained via a DHCP server:

Select menu option: ipSetup

Enter configuration method (auto,manual)[manual]:

auto

Select management VLAN ID (1)[1]:

This operation may take up to 30 seconds.

Select menu option:

Page 96

96 APPENDIX D: 3COM CLI REFERENCE GUIDE

Upgrade

The Upgrade command starts a system download and thereby allowing a system upgrade.

Syntax

upgrade

Default Configuration

This command has no default configuration.

User Guidelines

The Upgrade command prompts the user for required information. The TFTP server IP address and the software image file name on the server must be specified.

During the upgrade process, a series of dots appear representing the upgrade process in the CLI interface. When the upgrade process is completed, the command prompt reappears.

The Dual Software Image feature is supported, therefore the next boot after the Upgrade command will always use the newly downloaded image.

Example

The following example upgrades the system software on the Switch using a TFTP server:

Select menu option: upgrade

TFTP Server Address [192.168.1.254]: 192.168.1.9

File Name [runtime2.bix]: bfs00_00_00_11.bin

Software Upgrade has

begun...........................................

................................................

...........................

Upgrade Successful.

Select menu option:

Page 97

CLI Commands 97

Initialize

The Initialize command resets the device configuration to factory defaults, retaining the current IP configuration.

Syntax

Initialize

Default Configuration

This command has no default configuration.

User Guidelines

The system prompts for confirmation of the request. If no response is entered within 15 seconds, timeout occurs and the command is not executed.

Example

The following example resets the Switch to factory defaults:

Select menu option: initialize

WARNING: This command initializes the system to factory defaults (excluding Management IP configuration) and causes a reset.

Do you wish to continue (yes,no)[no]: yes

Saving configuration.....Saved config to all

units.

Reboot

The Reboot command simulates a power cycle of the device.

Syntax

reboot

Default Configuration

This command has no default configuration.

User Guidelines

There are no user guidelines for this command.

Example

Select menu option: reboot

Are you sure you want to reset the system (yes,no)[no]: yes

Saving configuration......Saved config to all

units.

System rebooting..........

Page 98

98 APPENDIX D: 3COM CLI REFERENCE GUIDE

Logout

The Logout command terminates the CLI session.

Syntax

logout

Default Configuration

This command has no default configuration.

User Guidelines

There are no user guidelines for this command.

Example

Select menu option: logout

Password

The Password command changes the user’s password.

Syntax

password

Default Configuration

This command has no default configuration.

User Guidelines

The user needs to login to the session in order to change the password.

Example

Select menu option: password

Old password:

Enter new password:

Retype password:

The command line interface password has been successfully changed.

Select menu option:

Page 99

REGULATORY NOTICES

FCC Statement

This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a commerical environment. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference to radio communications, in which case the user will be required to correct the interference at their own expense.

Information to the User

If this equipment does cause interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

■ Reorient the receiving antenna.

■ Relocate the equipment with respect to the receiver.

■ Move the equipment away from the receiver.

■ Plug the equipment into a different outlet so that equipment and receiver are

on different branch circuits.

If necessary the user should consult the dealer or an experienced radio/television technician for additional suggestions. The user may find the following booklet prepared by the Federal Communications Commission helpful:

How to Identify and Resolve Radio-TV Interference Problems

This booklet is available from the U.S. Government Printing Office, Washington, DC 20402, Stock No. 004-000-00345-4. In order to meet FCC emissions limits, this equipment must be used only with cables which comply with IEEE 802.3.

ICES Statement

This Class A digital apparatus complies with Canadian ICES-003. Cet appareil numérique de la Classe A est conforme à la norme NMB-003 du Canada.

CE Statements (Europe)

EU Representative: 3Com Europe Limited Peoplebuilding 2, Peoplebuilding Estate Maylands Avenue Hemel Hempstead, Hertfordshire HP2 4NW United Kingdom

This product complies with the European Low Voltage Directive 73/23/EEC and EMC Directive 89/336/EEC as amended by European EMC Directive 2004/108/EC.

Warning: This is a class A product. In a domestic environment this product may cause radio interference in which case the user may be required to take adequate measures.

A copy of the signed Declaration of Conformity can be downloaded from the Product Support web page for the Baseline Switch 2226-SFP Plus, 2426-PWR Plus and 2250-SFP Plus at http://www.3Com.com.

Also available at http://support.3com.com/doc/3CBLSF_EU_DOC.pdf

VCCI Statement

Pre-Standard IEEE 802.3at and Cable Temperatures

3Com recommends that you do not operate your cables above 50°C (122°F) if you are using the higher power mode capability of the 3CBLSF26PWR. This switch can deliver up to 29.6 W per port (measured at the PD, assuming 100 m Cat 5E cable connected between the PD and the Switch 2426-PWR, subject to power being available), and in certain cable installations this may result in increased cable temperatures. If you are in anyway unsure of how your cable installation is laid out, you should contact an approved cable installation company for advice prior to using the higher power modes.

This guidance is only applicable to pre-standard 802.3at operation. When operating in

802.3af (15.4 W) mode it is not necessary to run at lower than rated cable temperatures.

Page 100

100

3COM 2250-SFP, 2226-SFP, 2426-PWR User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

ABOUT THIS GUIDE

Conventions

Documentation Comments

Product Registration

INTRODUCING THE BASELINE SWITCH

Overview of the Baseline Switch

Features and Capabilities

Autosensing of MDI/MDIX Connections

Autonegotiating 10/100 Mbps Ports

Power-over-Ethernet Capability

Gigabit Combo Ports (RJ-45/SFP)

Physical Features

Front Panel

Rear Panel

Package Contents

INSTALLING THE SWITCH

Important Safety Information

Positioning the Switch

Rack-Mounting or Free-Standing

Using the Mounting Kit

Montagesatz Anweisungen

Placing Units On Top of Each Other

Supplying Power to the Switch

Checking for Correct Operation

Using SFP Tranceivers

Approved SFP Transceivers

Inserting an SFP Transceiver

Removing an SFP Transceiver

Performing Spot Checks

CONNECTING TO THE WEB INTERFACE

Requirements for Accessing the Web Interface

Using the Console Command Line Interface (CLI)

Logging On to the Web Interface

Navigating the Web Interface

Menu

Buttons

Port Status

Accessing the Switch using the 3Com Switch Detect Application

Running the 3Com Switch Detect Application

CONFIGURING THE SWITCH FROM THE WEB INTERFACE

Configuration Overview

Device Summary Information

Administration Settings

Modifying the IP Address Settings

Automatic IP Configuration

IP Setup

Backup Configuration

Restore Configuration

Firmware Upgrade

Reset

System Access

System Name

System Time

SNMP

Configuring VLANs

VLAN

Forwarding Tagged/Untagged Frames

Sample VLAN Configurations

Spanning Tree

IGMP Snooping & Query

Broadcast Storm

QoS VoIP Traffic Settings

PoE (3CBLSF26-PWR only)

Configuring Port Settings

Administration

Link Aggregation

Statistics

Security

RADIUS Client

802.1X Settings

Monitoring

Address Table

Port Mirroring

Cable Diagnostics

TROUBLESHOOTING

Resetting to Factory Defaults