3COM 2226 PLUS User Manual

Baseline Switch

2226 Plus

User Guide

Installationsanleitung

3C16475CS

www.3com.com

Part No. 10015240 Rev. AA

Published August 2006

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

Copyright © 2006, 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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3Com, 3Com Express, 3Com Guardian and the 3Com logo are registered trademarks of 3Com Corporation.

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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.

CONTENTS

ABOUT THIS GUIDE

Conventions 7

Documentation Comments 8

Product Registration 8

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

1	INTRODUCING THE BASELINE SWITCH	3
	Overview of the Baseline Switch 9		CONNECTING TO THE WEB INTERFACE
	Features and Capabilities 9		Requirements for Accessing the Web Interface 23

	Autosensing of MDI/MDIX Connections 9					Running the Discovery Application				23
	Autonegotiating 10/100 Mbps Ports			9		Logging On to the Web Interface				25
	Gigabit Combo Ports (RJ-45/SFP) 9					Navigating the Web Interface			26
	Physical Features	10				Menu	26
	Front Panel	10				Buttons	29
	Rear Panel	13				Port Status 29
	Package Contents 14					Accessing the Interface Without Using Discovery 30
						DHCP Assigned IP Address			30
2	INSTALLING THE SWITCH					Manually Assigned (Static) IP Address 30
	Before You Begin	15			4
						CONFIGURING THE SWITCH
	Positioning the Switch 15
	Rack-Mounting or Free-Standing		16			Configuration Overview		31
	Using the Mounting Kit 16					Device Summary Information			31
	Montagesatz Anweisungen		17			Administration Settings		33
	Placing Units On Top of Each Other			17		Modifying the IP Address Settings 33
	Supplying Power to the Switch		18			Automatic IP Configuration			33

IP Setup	34
Backup Configuration					35
Restore Configuration					35
Firmware Upgrade				36
Initialize	37
Reboot	37
System Access			38
System Time		40
SNMP	40
Configuring VLANs			42
VLAN	43
Forwarding Tagged/Untagged Frames 47
Sample VLAN Configurations 47
Spanning Tree			49
IGMP Snooping			51
IGMP Query		51
Broadcast Storm			51
Configuring Port Settings					53
Administration			53
Speed/Duplex for 1000 Mbps Connections 55
Link Aggregation				56
Spanning Tree per Port					58
Port Mirroring			61
Statistics	62
QoS VoIP Traffic Settings					62
Security 65
RADIUS Client			65
802.1X Settings			67
Monitoring	70
Address Table			70
Cable Diagnostics				70

5	TROUBLESHOOTING
	Resetting to Factory Defaults				73
	Forgotten Password		74
	Forgotten Static IP Address				74
	Solving LED Issues		74
	If the Problem Persists			76
A
	OBTAINING SUPPORT FOR YOUR PRODUCT
	Register Your Product			77
	Purchase Value-Added Services 77
	Troubleshoot Online		77
	Access Software Downloads				77
	Telephone Technical Support and Repair 78
	Contact Us	78
B
	TECHNICAL INFORMATION
	Related Standards		81
	Environmental		81
	Physical	81
	Electrical	81
C
	SAFETY INFORMATION
	Important Safety Information				83

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.

Table 1 Notice Icons

Icon	Notice Type	Description
	Information note	Information that describes
		important features or instructions
	Caution	Information that alerts you to
		potential loss of data or potential
		damage to an application, system,
		or device
	Warning	Information that alerts you to
		potential personal injury

8	ABOUT THIS GUIDE
	Table 2 Text Conventions
Convention		Description
The words “enter”		When you see the word “enter” in this
and “type”		guide, you must type something, and then
		press Return or Enter. Do not press Return
		or Enter when an instruction simply says
		“type.”
Keyboard key names		If you must press two or more keys
		simultaneously, the key names are linked
		with a plus sign (+). Example:
			Press Ctrl+Alt+Del
Words in italics		Italics are used to:
		■	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:

[e-mail]

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

1	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

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

Physical Features

11

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	Packets are being received or transmitted on the
Green	port at 1000 Mbps.
Flashing	Packets are being received or transmitted on the
Yellow	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.
Yellow	The link is operating at 10 Mbps.
Flashing	Packets are being received or transmitted on the
Green	port at 100 Mbps.
Flashing	Packets are being received or transmitted on the
Yellow	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.

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
	failed. Switch is in fail-safe mode.
Off	The unit is not receiving power.

■Check that the power cord is connected correctly.

■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.

Physical Features

13

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 73 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.

2	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.

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” 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.

To rack-mount the Switch:

1Place the unit the right way up on a hard, flat surface with the front facing towards you.

2Locate a mounting bracket over the mounting holes on one side of the unit.

3Insert the two screws supplied in the mounting kit and fully tighten with a suitable screwdriver.

Figure 2 Rack Mounting the Unit

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

5Insert the unit into the 19-inch rack and secure with suitable screws (not provided).

6Reconnect 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.

Rack-Mounting or Free-Standing

17

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.

1Plazieren Sie die Baugruppe aufrecht auf einer harten, ebenen Fläche mit der Vorderseite zu Ihnen.

2Ordnen Sie eine der Halterungen über den Löchern an der Seite der Baugruppe an.

3Stecken Sie zwei der mitgelieferten Schrauben in die Löcher und drehen Sie diese mit einem geeigneten Schraubendreher fest.

4Widerholen Sie letzten beiden Schritte auf der anderen Seite der Baugruppe.

5Führen Sie die Baugruppe in den 19" (Zoll) Baugruppenträger ein und sichern sie die Baugruppe mit geeigneten Schrauben. (Nicht im Lieferumfang enthalten).

6Schließen 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:

1Plug 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.

2Plug 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.

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 73.

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.

Using SFP Tranceivers

19

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.

20INSTALLING 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 73.

To activate the SFP port:

1Hold 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

2Gently 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.

3Remove the plastic protective cover, if fitted.

4Connect the fiber cable.

5Attach a male duplex LC connector on the network cable into the duplex LC connector on the transceiver.

6Connect the other end of the cable to a device fitted with an appropriate Gigabit Ethernet connection.

7Check 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:

1Disconnect the cable from the transceiver.

2Move the wire release lever downwards until it is pointing toward you.

3Pull the wire release lever toward you to release the catch mechanism.

The SFP transceiver should slide out easily.

Performing Spot Checks

21

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.

Table 1 Items to Check

Cabling	Check that all external cabling connections
	are secure and that no cables are pulled
	taut.
Cooling fan	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 73.

22	INSTALLING THE SWITCH

3	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.

24	CHAPTER 3: CONNECTING TO THE WEB INTERFACE

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.

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

1On 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 \Discovery folder on the CD-ROM, and then double-click

discovery.exe.

The Welcome screen of Discovery appears.

Figure 4 Welcome Screen of Discovery

2If 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

3On the Discovered Devices screen, click

Baseline Switch 2226 Plus, and then click Next.

The Completing the 3Com Discovery Application screen appears.

4Click 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 logon screen also displays the IP address that the Switch is currently using.

Figure 6 Logon Dialog Box

To log on to the Web interface:

1In User name, type admin.

2Leave the Password field blank.

3Click OK.

26	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.

Menu

The menu is located on the left side of the Web interface. When you click an item on the menu, the related screen appears in the main part of the interface. Some menu items will give you sub-menu tabs to choose from.

Figure 7 Switch Screen Layout

Sub-Menu Tabs

	Menu			System		Information

Table 1 lists the available items on the menu.

Table 1 Available Menu Items

Menu Item	Description
Device Summary	Contains tabs that allow you to:
	■	Provide a summary of the Switch’s
		basic settings and versions of current
		components.
	■	Set the polling interval in seconds.
	■	Display the description for each
		color coded port.
Save Configuration	Saves the Switch’s configuration.
Administration	Manages the device.
IP Setup	Allows you to setup, modify, or view
	the IP configuration parameters.
Backup	Allows you to backup the Switch’s
Configuration	configuration.
Restore	Allows you to restore a saved
Configuration	configuration.
Firmware Upgrade	Allows you to upgrade the current
	firmware via HTTP.
Initialize	Allows you to reset the Switch to
	factory default settings.
Reboot	Allows you to perform system reboot.

Navigating the Web Interface

27

Menu Item	Description
System Access	Contains tabs that allow you to:
	■	Display user summary information.
	■	Create a new user.
	■	Modify existing users.
	■	Remove existing users.
System Time	Allows you to set the system time.
SNMP	Contains tabs that allow you to:
	■	Display SNMP summary.
	■	Add community strings.
	■	Remove community strings.
Device	Configures the device.
VLAN	Contains tabs that allow you to:
	■	Create a VLAN.
	■	Modify a VLAN.
	■	Modify VLAN membership for a
		port.
	■	Rename a VLAN.
	■	Remove a VLAN.
	■	Display VLAN membership for a
		port.
	■	Display VLAN information.
Spanning Tree	Allows you to configure a Spanning
	Tree Protocol.

28 CHAPTER 3: CONNECTING TO THE WEB INTERFACE

Menu Item	Description
IGMP Snooping	Allows you to enable or disable IGMP
	snooping.
IGMP Query	Allows you to enable or disable IGMP
	query mode.
Broadcast Storm	Allows you to enable or disable rate
	limiting.
Port	Configures the ports.
Administration	Contains tabs that allow you to:
	■ Display selected port information for
		the entire Switch.
	■	Display individual port information.
	■	Modify the port settings.
Link Aggregation	Contains tabs that allow you to:
	■	Display link aggregation summary.
	■	Create an aggregation group.
	■	Modify the port memberships.
	■	Remove an aggregation group.

Spanning Tree per Contains tabs that allow you to:

Port	Display selected spanning tree
■
	information for every port.
■ Display individual port spanning tree
	information.
■	Modify the spanning tree settings
	for a port.

Menu Item	Description
Port Mirroring	Monitor traffic going in and out of
	ports.
Statistics	Display statistics for a selected port.
QoS	Configures QoS settings.
VoIP Traffic Setting	Contains tabs that allow you to:
	■	Display Voice VLAN summary.
	■	Configure Voice VLAN global
		settings.
	■	Configure Voice VLAN port settings.
	■	Display port information for Voice
		VLAN and Trunk details.
	■	Display OUI summary.
	■	Add or remove OUI.
Security	Configures security settings.
Radius Client	Contains tabs that allow you to:
	■	Display Radius Client information.
	■ Configure Radius Client settings and
		set authentication parameters.

Menu Item	Description
802.1X Settings	Contains tabs that allow you to:
	■	Display system authentication
		summary.
	■	Display detailed information per
		port.
	■	Configure system authentication
		settings.
Monitoring	Display Switch monitoring information.
Address Table	Displays MAC address table
	information for ports and VLANs.
Cable Diagnostics	Contains tabs that allow you to:
	■	Display selected cable diagnostics
		information for all ports.
	■	Display all cable diagnostics
		information for a single port.
Help	Displays 3Com contact information
	and describes how to use the online
	help system.
Log Out	Allows you to securely log off the Web
	interface.

Navigating the Web Interface

29

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