3Com 2226 PLUS User Manual

www.3com.com

Baseline Switch 2226 Plus

User Guide

Bedienungsanleitung

3C16475CS

Part No. 10015240 Rev. BA Published February 2008

3Com Corporation • 350 Campus Drive • Marlborough • MA USA 01752-3064

Copyright © 2007, 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.

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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.

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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 Gigabit Combo Ports (RJ-45/SFP) 9

Physical Features 10

Front Panel 10 Rear Panel 13

Package Contents 14

2 INSTALLING THE SWITCH

Before You Begin 15 Positioning the Switch 15 Rack-Mounting or Free-Standing 16

Using the Mounting Kit 16 Montagesatz Anweisungen 17 Placing Units On Top of Each Other 17

Supplying Power to the Switch 18

Checking for Correct Operation 18

Using SFP Tranceivers 19

Approved SFP Transceivers 19 Inserting an SFP Transceiver 19 Removing an SFP Transceiver 20

Performing Spot Checks 21

3 CONNECTING TO THE WEB INTERFACE

Requirements for Accessing the Web Interface 23 Running the Discovery Application 23 Logging On to the Web Interface 25 Navigating the Web Interface 25

Menu 25 Buttons 28 Port Status 28

Accessing the Interface Without Using Discovery 28

DHCP Assigned IP Address 29 Manually Assigned (Static) IP Address 29

4 CONFIGURING THE SWITCH

Configuration Overview 31 Device Summary Information 31 Administration Settings 33

Modifying the IP Address Settings 33 Automatic IP Configuration 33

IP Setup 34 Backup Configuration 35 Restore Configuration 35 Firmware Upgrade 35 Initialize 36 Reboot 36 System Access 37 System Time 39 SNMP 39

Configuring VLANs 41

VLAN 42 Forwarding Tagged/Untagged Frames 46 Sample VLAN Configurations 46 Spanning Tree 48 IGMP Snooping 50 IGMP Query 50 Broadcast Storm 51

Configuring Port Settings 51

Administration 51 Speed/Duplex for 1000 Mbps Connections 53 Link Aggregation 54 Spanning Tree per Port 56 Port Mirroring 58

Statistics 60 QoS VoIP Traffic Settings 60 Security 64

RADIUS Client 64

802.1X Settings 66

Monitoring 68

Address Table 68

Cable Diagnostics 68

5 TROUBLESHOOTING

Resetting to Factory Defaults 71 Forgotten Password 71 Forgotten Static IP Address 72 Solving LED Issues 72 If the Problem Persists 73

A OBTAINING SUPPORT FOR YOUR PRODUCT

Register Your Product 75 Purchase Value-Added Services 75 Troubleshoot Online 75 Access Software Downloads 75 Telephone Technical Support and Repair 76 Contact Us 76

B TECHNICAL INFORMATION

Related Standards 79

Environmental 79 Physical 79 Electrical 79

C SAFETY INFORMATION

Important Safety Information 81

GLOSSARY

REGULATORY NOTICES

INDEX

ABOUT THIS GUIDE

This guide describes how to install your 3Com Switch and perform initial management configurations.

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 fur die Benutzung durch Netzwerkadministratoren vorgesehen, die fur die Installation und das einstellen von Netzwerkkomponenten verantwortlich sind; sie setzt Erfahrung bei der Arbeit mit LANs (Local Area Networks) voraus.

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

Table 1 and Table 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

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 2226 Plus User Guide

■ Part number: 10015240

■ 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

INTRODUCING THE BASELINE SWITCH

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

Overview of the Baseline Switch

The 3Com® Baseline Switch 2226 Plus is a versatile, easy-to-use unmanaged switch. It is ideal for users who want the high-speed performance of 10/100 switching with the added functionality of Gigabit fiber links, but do not need sophisticated management capabilities. The Switch is shipped ready for use. No configuration is necessary.

Features and Capabilities

The Switch has 24 shielded RJ-45, 10/100 Mbps auto-negotiating ports and 2 Gigabit combo ports (which 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.

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

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 you the flexibility of using SFP transceivers to provide connectivity between the Switch and a 1000 Mbps core network.

10 INTRODUCING THE BASELINE SWITCH

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.

Physical Features

Figure 1 shows the front and rear panels of the Switch. The numbers in this diagram refer to numbered sections in “Front Panel” on page 10 and “Rear Panel” on page 13.

Figure 1 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 10/100 Mbps auto-negotiating ports. Each port supports automatic MDI/MDI-X detection and

Physical Features 11

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.

CAUTION: The Switch supports full duplex auto-negotiation. If auto-negotiation is disabled for 1000BASE-T, then the Switch uses the forced-mode default of 100 full duplex mode. If the connected device does not support auto-negotiation, the Switch will operate in half duplex mode (even if the attached device is operating in full duplex mode). In such a configuration, you may notice some degradation of network performance. 3Com recommends that you use devices that are capable of auto-negotiation (and that you ensure that auto-negotiation is enabled, if it is a configurable option).

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

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

The two SFP ports support fiber Gigabit Ethernet short-wave (SX) and long-wave (LX) 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 the Switch. 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) Link/Activity Status LEDs

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

10/100/1000BASE-T Ports

Status Meaning

Green The link is operating at 1000 Mbps.

Yellow The link is operating at 10 or 100 Mbps.

Flashing Green

Flashing Yellow

Packets are being received or transmitted on the port at 1000 Mbps.

Packets are being received or transmitted on the port at 10 or 100 Mbps.

12 INTRODUCING THE BASELINE SWITCH

Off The link has not been established, either nothing

is connected to the port, or there is a problem:

■ Check that the attached device is powered

on.

■ Check that the cable or fiber is the correct

type and is not faulty.

■ For fiber connections, ensure that the receive

(RX) and transmit (TX) cable connectors are not swapped.

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.

10/100BASE-TX Ports

Status Meaning

Green The link is operating at 100 Mbps.

Yel lo w The link is operating at 10 Mbps.

Flashing Green

Flashing Yel lo w

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

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

Off The link has not been established, either nothing

is connected to the port, or there is a problem:

■ Check that the attached device is powered

on.

■ Check that the cable or fiber is the correct

type and is not faulty.

■ For fiber connections, ensure that the receive

(RX) and transmit (TX) cable connectors are not swapped.

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.

(4) Duplex Status LEDs

The second and fourth (bottom) row of Status LEDs, which are colored yellow (for duplex) or green (for module active), show the duplex status of the related ports:

10/100/1000BASE-T Ports

Status Meaning

Yellow The port is operating in full duplex mode.

Off The port is operating in half duplex mode.

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

Physical Features 13

Gigabit Combo Ports

Status Meaning

Green SFP is inserted in the slot.

Off No SFP in the slot.

(5) Power LED

The Power LED shows the power status of the Switch.

Status Meaning

Green The unit is powered on and ready for use.

Yellow Internal power, POST, or loopback test has

Off The unit is not receiving power.

failed. Switch is in fail-safe mode.

■ Check that the power cord is connected cor-

rectly.

■ If the unit still does not operate, contact your

supplier.

(6) Self-adhesive Pads

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

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 with the recesses of the lower unit.

Rear Panel

The rear panel of the Switch contains a power supply socket and a recovery button.

(7) Power Supply

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

(8) Recovery Button

The recovery button reinitializes the Switch. This returns the Switch to the factory default settings if, for example, you have forgotten the default IP address, or forgotten your user name or password.

CAUTION: 3Com recommends that you back up your configuration settings before you recover the Switch, otherwise your configuration may be lost. Refer to “Resetting to Factory Defaults” on page 71 for details.

14 INTRODUCING THE BASELINE SWITCH

Package Contents

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

■ One power cord

■ Four standard height, self-adhesive rubber pads

■ One mounting kit

■ 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.

INSTALLING THE SWITCH

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

■ Before You Begin

■ Positioning the Switch

■ Rack-Mounting or Free-Standing

■ Supplying Power to the Switch

■ Using SFP Transceivers

■ Performing Spot Checks

Before You Begin

WARNING: Safety Information. Before installing or removing any components from the Switch or carrying out any maintenance procedures, read the safety information provided in Appendix C of this guide.

AVERTISSEMENT: Consignes de Sécurité. Avant d'installer ou d'enlever tout composant du Switch ou d'entamer une procédure de maintenance, lisez les informations relatives à la sécurité qui se trouvent dans l'Appendice C (Appendix C) de ce guide.

WARNHINWEIS: Sicherheitsinformationen. Bevor Sie Komponenten aus dem Switch entfernen oder dem Switch hinzufuegen oder Instandhaltungsarbeiten verrichten, lesen Sie die Sicherheitsanweisungen, die in Anhang C (Appendix C) in diesem Handbuch aufgefuehrt sind.

ADVERTENCIA: Información de Seguridad. Antes de instalar o extraer cualquier componente del product o de realizar tareas de mantenimiento, debe leer la información de seguridad facilitada en el Apéndice C (Appendix C) de esta guía del usuario.

AVVERTENZA: Informazioni di Sicurezza. Prima di installare o rimuovere qualsiasi componente dal product o di eseguire qualsiasi procedura di manutenzione, leggere le informazioni di sicurezza riportate nell'Appendice C (Appendix C) della presente guida per l'utente.

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.

16 INSTALLING THE SWITCH

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.

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” on page 15.

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 unit, if already fitted.

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.

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.

Rack-Mounting or Free-Standing 17

3 Insert the two screws supplied in the mounting kit and

fully tighten with a suitable screwdriver.

Figure 2 Rack Mounting the Unit

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.

Montagesatz Anweisungen

Der Switch wird mit zwei Halterungen und vier Schrauben geliefert. Diese werde für den Einbau in einen Baugruppenträger benutzt. Bei der Montage der Baugruppe beachten Sie die Anweisungen aus “Positioning the Switch” on page 15.

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

ACHTUNG: Entfernen Sie alle Kabel, bevor Sie fortfahren. 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 zu Ihnen.

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 Widerholen Sie letzten beiden 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.

18 INSTALLING THE SWITCH

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.

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 “(7) Power Supply” on page 13 for more information.

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 “(5) Power LED” on page 13 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.

Status Meaning

Green The unit is powered on and ready to use.

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

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

Using SFP Tranceivers 19

Off The unit is not receiving power:

■ 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 71.

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.

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 on the Switch. If you insert an SFP transceiver that is not supported, the Switch will not recognize it.

Inserting an SFP Transceiver

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

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

■ 1000BASE-SX SFP transceiver

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

20 INSTALLING THE SWITCH

■ 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 71.

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 3. Ensure the wire release lever is closed (in the upright position).

Figure 3 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 Table 1.

Tabl e 1 Items to Check

Performing Spot Checks 21

Cabling Check that all external cabling connections

Cooling fan Where possible, check that the cooling fan

are secure and that no cables are pulled taut.

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 71.

22 INSTALLING THE SWITCH

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 the 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

■ Running the Discovery Application

■ Logging On to the Web Interface

■ Navigating the Web Interface

■ Accessing the Interface Without Using Discovery

Requirements for Accessing the Web Interface

To connect to the Web interface, you need the following:

■ The Discovery application, which is included on

3Com Baseline Switch 2226 Plus CD-ROM that is supplied with your Switch

■ A computer that is connected to the Switch and that

has a Web browser

Running the Discovery Application

The 3Com Baseline Switch 2226 Plus CD-ROM contains, among others, the Discovery application.

The Discovery application can be used for detecting and connecting to the Switch on the network. The application will launch a Web interface that provides the user with options to configure, modify, and upgrade the Switch.

24 CHAPTER 3: CONNECTING TO THE WEB INTERFACE

To use Discovery to connect to the Web interface, do the following:

1 On a computer that is connected to the Switch, insert

the CD-ROM into its CD drive.

Discovery should start automatically. If it does not start automatically, go to the CD-ROM, and then double-click

\Discovery folder on the

discovery.exe.

The Welcome screen of Discovery appears.

Figure 4 Welcome Screen of Discovery

2 If the computer has multiple network adapters, select

the adapter that connects the computer to the Switch, and then click Next.

If the computer has only one adapter, click Next.

Discovery searches the network for 3Com devices. When detection is complete, the Discovered Devices screen displays detected network devices.

Figure 5 Discovered Devices Screen

3 On the Discovered Devices screen, click Baseline Switch

2226 Plus, and then click Next.

The Completing the 3Com Discovery Application screen appears.

4 Click Finish.

The logon dialog box for the Web interface appears.

Logging On to the Web Interface 25

Logging On to the Web Interface

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 6 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.

If your switch administration browser session remains inactive for more than 10 minutes, the Switch will automatically log you out.

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

■ Help – Click to display the context-sensitive help

information for the screen that is currently displayed. The help pages provide information on the tasks that you can perform on each screen.

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 these following configuration options:

■ View detailed port information

■ Configure the port settings

■ View port statistics

Accessing the Interface Without Using Discovery

The Discovery application works by automatically detecting the IP address that is assigned to the Switch, and then using that address to connect to the Web

+ 64 hidden pages

3Com 2226 PLUS 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

Gigabit Combo Ports (RJ-45/SFP)

Physical Features

Front Panel

Rear Panel

Package Contents

INSTALLING THE SWITCH

Before You Begin

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

Running the Discovery Application

Logging On to the Web Interface

Navigating the Web Interface

Menu

Buttons

Port Status

Accessing the Interface Without Using Discovery