3com 3C16475BS User Manual

Baseline Switch 2226 Plus (3C16475BS) User Guide

http://www.3com.com/

Part No. DUA16475B-SAAA01 Published March 2005

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

Copyright © 2005, 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 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

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.

2.101(a) and as such is provided

1995) or FAR 52.227-14 (June

Microsoft, MS-DOS, Windows, and Windows NT are registered trademarks of Microsoft

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

Netscape Navigator is a registered trademark of Netscape Communications.

JavaScript is a trademark of Sun Microsystems.

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.

Corporation.

CONTENTS

ABOUT THIS GUIDE

Conventions 5 Related Documentation 6 Documentation Comments 6

1 INTRODUCING THE BASELINE SWITCH

Overview of the Baseline Switch 2226 Plus 7 Features and Capabilities 7

Autosensing of MDI/MDIX Connections 7 Autonegotiating 10/100 Mbps Ports 7 SFP Ports 8 Traffic Prioritization 8

Physical Features 9

Front Panel 9 Rear Panel 12

Package Contents 12

2 INSTALLING THE SWITCH

Before You Begin 13 Positioning the Switch 13 Aufstellen des Switch 14 Rack-Mounting or Free-Standing 14

Using the Mounting Kit 15 Montagesatz Anweisungen 15 Placing Units On Top of Each Other 16

Supplying Power to the Switch 16

Checking for Correct Operation 17 Connecting a Network Device 17 Using SFP Transceivers 18

Approved SFP Transceivers 18

Inserting an SFP Transceiver 18

Removing an SFP Transceiver 19 Performing Spot Checks 19

3 CONNECTING TO THE WEB INTERFACE

Requirements for Accessing the Web Interface 21 Running the Discovery Application 21 Logging On to the Web Interface 22 Navigating the Web Interface 23

Menu 23

Buttons 24 Accessing the Interface Without Using Discovery 24

DHCP Assigned IP Address 24

Manually Assigned (Static) IP Address 25

4 CONFIGURING THE SWITCH

Configuration Overview 27 Viewing Status Information 27 Changing the Admin Password 28 Modifying the IP Address Settings 29

Automatic IP Configuration 29

Setting the IP Address 30 Configuring Port Settings 31

Viewing Port Settings 31 Default Port Settings 31 Changing a Port’s Settings 32

Configuring VLANs 33

Creating a VLAN 34 Sample VLAN Configurations 35 Removing a VLAN 36

Configuring Link Aggregation 36

Trunk Membership 37 Adding Ports to a Trunk 37

Configuring Trunk Settings 38 Viewing Statistics 38 Monitoring Traffic 39 Setting the Traffic Priority 40

IP Phone Prioritization 40

List of Detected Phones 41 Upgrading the Firmware 41

Downloading Firmware Updates 41

Installing the Firmware on the Switch 42

5 TROUBLESHOOTING

Resetting to Factory Defaults 43 Forgotten Password 44 Forgotten Static IP Address 44 Solving LED Issues 44 Solving Corrupted Firmware 45 If the Problem Persists 45

Access Software Downloads 47 Telephone Technical Support and Repair 48 Contact Us 48

B SAFETY INFORMATION

Important Safety Information 51 Consignes Importantes de Sécurité 52 Wichtige Sicherheitshinweise Informationen 53 Información de Seguridad Importante 54 Importanti Informazioni di Sicurezza 56

C TECHNICAL INFORMATION

Related Standards 59

Environmental 59 Physical 59 Electrical 59

GLOSSARY

INDEX

REGULATORY NOTICES

A OBTAINING SUPPORT FOR YOUR PRODUCT

ABOUT THIS GUIDE

This guide is intended for use by network administrators who are 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 das einstellen von Netzwerkkompo nenten verantwortlich sind; sie setzt Erfahrung bei.

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) on the 3Com World Wide Web site:

http://www.3com.com

Conventions

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

throughout this guide.

Ta bl e 1 Notice Icons

Icon Notice Type Description

Information note

Caution Information that alerts you to potential loss of

Warning Information that alerts you to potential

Ta bl e 2 Text Conventions

Convention Description

Screen displays

The words “enter”

“type”

and

Words in italics Italics are used to:

Information that describes important features or instructions

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

personal injury

This typeface represents information as it appears on the screen.

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.”

■ 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.

6 ABOUT THIS GUIDE

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)

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.

Example:

■ 3Com Baseline Switch 2226 Plus User Guide

■ Part number: DUA16475B-SAAA01

■ Page 25

INTRODUCING THE BASELINE SWITCH

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

Baseline Switch 2226 Plus.

Overview of the Baseline Switch 2226 Plus

The 3Com Baseline Switch 2226 Plus is a versatile, easy-to-use configurable Switch. It is ideal for users who want the high-speed performance of 10/100 switching with the added functionality of Gigabit links, but do not need sophisticated management capabilities.

The Switch is shipped ready for use. No configuration is necessary, unless you want to configure advanced features such as VLAN support, link aggregation, and traffic prioritization.

Features and Capabilities

The Switch has 24 shielded RJ-45, 10/100 Mbps autonegotiating ports and two dual purpose 10/100/1000BASE-T ports that operate in conjunction with two Small Form Factor Pluggable (SFP) trans ceiver slots on the front panel for easy, flexible connection to fiber-based Gigabit media.

While there are four physical Gigabit ports, only a maximum of two can be operational at any given time.

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 1000BASE-T ports also support automatic 10/100/1000 Mbps speed detection.

10/100 Mbps connections on these 1000BASE-T

ports can operate in either half-duplex or full-duplex mode. 1000 Mbps connections, on the other hand, only operate in full duplex mode.

8 CHAPTER 1: INTRODUCING THE BASELINE SWITCH

SFP Ports

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 a 1000 Mbps core network. When an SFP port is in operation, the corresponding 10/100/1000BASE-T port is disabled.

Traffic Prioritization

The Switch supports two types of traffic prioritization:

■ Prioritization of IP phone traffic

■ Priority Queuing

Prioritization of IP Phone Traffic

The Switch can recognize when an NBX phone is connected to any of the ports 1 to 24. The Switch will automatically detect the NBX phone when the phone starts up, and will ensure that traffic to and from the phone is given the highest priority.

To ensure that the NBX phone is recognized by the Switch during its initialization, do not connect any data source through the phone until the phone has finished its startup sequence.

Once the phone is available for use, any data source (for example, a computer) can then be connected to the phone’s pass-through port. This only applies if you use a single wall jack for your network connec tion and use the pass-through LAN port on the NBX phone.

Traffic Priority Queuing

The Switch also offers priority queuing. It examines each packet that it receives to determine if it is prior

ity-encoded. If a packet is priority-encoded, the Switch reads the priority level and determines whether the packet should be directed through the normal or high priority channel. This feature is useful, for example, during periods of excessive network load, when one type of traffic may require priority over another. The Switch is configured to comply with 802.1p, VLAN tagged frames.

Traffic prioritization ensures that high priority data is forwarded through the Switch without being delayed by lower priority data. It differentiates traffic into classes and prioritizes those classes automatically.

Traffic prioritization uses multiple traffic queues that are present in the hardware of the Switch to ensure that high priority traffic is forwarded on a different queue from lower priority traffic, and is given prefer

ence over that traffic. This ensures that time-sensitive traffic gets the highest level of service.

The 802.1D standard specifies eight distinct levels of priority (0 to 7), each of which relates to a particular type of traffic. The priority levels and their traffic types are shown in

Ta bl e 3 Priority Levels for Traffic Types

Priority Level Traffic Type

0 Best effort

1 Background

2 Standard (spare)

Ta bl e 3.

Physical Features 9

3 Excellent effort (business critical)

4 Controlled load (streaming multimedia)

5 Video (interactive media), less than 100

6 Voice (interactive voice), less than 10

7 Network control reserved traffic

The traffic prioritization feature supported by the Switch is compatible with the relevant sections of the IEEE 802.1D standard (incorporating IEEE 802.1p).

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 9 and “Rear

Panel” on page 12.

Figure 1 Front and Rear Panels

milliseconds latency and jitter

4 9 5

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) 24 RJ-45 Ports

WARNING: RJ-45 Ports. These are shielded RJ-45 data sockets. They cannot be used as standard tradi

tional 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 conven

tionnelles standard, ni pour la connection de l’unité à

un réseau téléphonique central privé ou public. Rac corder seulement connecteurs de données RJ-45,

systèmes de réseaux de téléphonie ou téléphones de

3C16475B

réseaux à ces prises.

Il est possible de raccorder des câbles protégés ou non protégés avec des jacks protégés ou non pro

tégés 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 pri

vatem oder öffentlichem Telefonnetzwerk gebraucht

10 CHAPTER 1: INTRODUCING THE BASELINE SWITCH

werden. Nur RJ-45-Datenanscluße, Telefonnetzsysteme or Netztelefone an diese Steckdosen anschließen.

Entweder geschützte oder ungeschützte Buchsen dürfen an diese Datensteckdosen angeschlossen wer den.

ADVERTENCIA: Puertos RJ-45. Son conectores de datos RJ-45 blindados. No pueden utilizarse como tomas de teléfono tradicionales estándar ni para conectar la unidad a una central de conmutación PBX tradicional ni a una red telefónica pública. Conecte sólo conectores de datos RJ-45, sistemas de telefonía de red local o teléfonos de red local a estas tomas. Es posible conectar cables de datos blindados o sin blin dar con clavijas blindadas o sin blindar a estos conectores de datos.

AVVERTENZA: Le porte RJ-45. Sono prese dati RJ-45 schermate. Non è pertanto possibile utilizzarle come normali prese telefoniche né per collegare l'unità a un PBX (Private Branch Exchange, centralino telefonico privato) o a una rete telefonica pubblica. Collegare a queste porte solo prese dati RJ-45, sistemi di telefonia o telefoni di rete. A queste prese dati è possibile colle gare cavi dati schermati o non schermati con connettori schermati o non schermati.

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

Ports 1 to 24 are autonegotiating — their speed and duplex mode (half-duplex or full-duplex) are automat

ically determined by the capabilities of the connected device.

CAUTION: The Switch supports full-duplex autone-

gotiation. If the connected device does not support autonegotiation, the Switch will operate in half-duplex mode (even if the attached device is oper

ating 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 autonegotia

tion (and that you ensure that autonegotiation is enabled, if it is a configurable option). (see

“Trouble-

shooting” on page 43).

(2) Module Active LEDs

The Module Active LEDs show the status of any SFP modules that are installed.

Status Meaning

Green Fiber SFP is inserted in the slot

Off No fiber SFP is inserted in the slot

(3) Link/Activity LEDs

The Link/Activity LEDs show the link status of ports and the speed of connected devices.

Status Meaning

Green The link is operating at 1000 Mbps

Yellow The link is operating at 10 or 100 Mbps

Flashing Green Packets are being received or transmit-

ted on the port at 1000 Mbps

Physical Features 11

Status Meaning

Flashing Yellow Packets are being received or transmit-

Flashing Yellow to Green

Off The link has not been established, either

ted on the port at 10 or 100 Mbps

Port disabled or link loopback error

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

■ Verify that the attached device is

powered on

■ Verify 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 3Com network sup plier for further advice.

(4) 10/100/1000BASE-T/SFP Ports

Ports 25 and 26 are combination Gigabit RJ-45 ports with shared Small Form Factor Pluggable (SFP) trans

ceiver slots. If an SFP transceiver (purchased separately) is installed in a slot and is active, the associated RJ-45 port of the same number is disabled.

The 1000BASE-T RJ-45 ports support automatic MDI/MDI-X operation, so you can use straight-through or crossover cables for all network connections to workstations or servers, or to other switches or hubs.

groups or to create a high-capacity aggregated link backbone connection.

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 corre

sponding 10/100/1000 port is disabled when an SFP transceiver is plugged in.

(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

Off The unit is not receiving power:

■ Verify that the power cord is connected cor-

rectly

■ If the unit still does not operate, contact your

3Com network supplier

Flashing Green

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

■ Power-on self-test is in progress

Switch is in fail-safe mode.

12 CHAPTER 1: INTRODUCING THE BASELINE SWITCH

(6) Duplex LEDs

The second and fourth (bottom) row of Status LEDs, which are colored yellow, show the duplex status of the related ports.

Status Meaning

Off No link, link is not yet negotiated, or the port is

Yel lo w The port is operating in full-duplex mode

operating in half-duplex mode

(7) 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 under

side of the unit. Place the unit on top of the lower unit, ensuring that the pads locate with the recesses of the lower unit.

tion, refer to “Resetting to Factory Defaults” on

page 43.

Package Contents

The 3Com Baseline Switch 2226 Plus package includes the following items:

■ One 3Com Baseline Switch 2226 Plus unit

■ One power cord

■ Four standard height, self-adhesive rubber pads

■ One mounting kit

■ One CD-ROM, which contains this User Guide and

the 3Com Discovery application

■ One warranty flyer

Before installing and using the Switch, verify that your Switch package has all these items. If any of the above items are damaged or missing, contact your 3Com network supplier immediately.

Rear Panel

(8) Power Supply

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

(9) Recovery Button

Use the Recovery button on the rear panel to reset the Switch to its factory defaults. For more informa

INSTALLING THE SWITCH

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

■ Positioning the Switch

■ Rack-Mounting or Free-Standing

■ Supplying Power to the Switch

■ Connecting a Network Device

■ Performing Spot Checks

Before You Begin

WARNING: Safety Information. Before installing or removing any components from the Switch or carry ing out any maintenance procedures, read the safety information provided in

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 B (

WARNHINWEIS: Sicherheitsinformationen. Bevor Sie Komponenten aus dem Switch entfernen oder dem Switch hinzufuegen oder Instandhaltungsarbe

Appendix B of this guide.

Appendix B) de ce guide.

iten verrichten, lesen Sie die Sicherheitsanweisungen, die in Anhang B ( aufgefuehrt sind.

ADVERTENCIA: Información de Seguridad. Antes de instalar o extraer cualquier componente del prod uct o de realizar tareas de mantenimiento, debe leer la información de seguridad facilitada en el Apéndice B (

Appendix B) de esta guía del usuario.

AVVERTENZA: Informazioni di Sicurezza. Prima di installare o rimuovere qualsiasi componente dal prod uct o di eseguire qualsiasi procedura di manutenzione, leggere le informazioni di sicurezza riportate nell'Appendice B ( per l'utente.

Appendix B) in diesem Handbuch

Appendix B) della presente guida

Positioning the Switch

The Switch is suitable for use in an office environment where it can be free-standing or mounted in a stan dard 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:

14 CHAPTER 2: INSTALLING THE SWITCH

■ 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 net work.

■ Water or moisture cannot enter the case of the

unit.

■ Airflow around the unit and through the vents in

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

■ The air is as free of dust as possible.

■ Temperature operating limits are not likely to be

exceeded. It is recommended that the unit be 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 dis charge can cause reliability problems in your equipment.

■ Die Kabel nicht in der nahe von elektrischen

Storquellen befinden. Das schliest Aufzugss

chachte, Mikrowellen und Klimaanlagen ein. Elektromagnetische Felder konnen die Signale in den Kupferleitungen storen, und Fehler verursachen,

was die Verlangsamung Ihres Netzwerkes zur Folge haben kann.

■ Weder Wasser noch Feuchtigkeit in das Gehause

eindringen kann.

■ Die Luftzirkulation um den Switch und durch die

Offnungen des Gehauses nicht behindert wird. 3Com empfiehlt das Sie 25mm (1 Inch) Zwischen

raum sicherstellen.

■ Die Luft so frei wie moglich von Staub ist.

■ Es unwahrscheinlich ist das die Betriebstemperatur

uberschritten wird. 3Com empfiehlt das Sie den Switch in einer sauberen, klimatisierten Umgebung installieren.

Rack-Mounting or Free-Standing

The unit can be mounted in a 19-inch equipment rack

using the supplied mounting kit, (see

“Using the Mounting Kit” on page 15), or it can be free-stand-

ing. Do not place objects on top of the unit or stack.

Aufstellen des Switch

Bei der Entscheidung wo Sie den Switch positionieren, stellen Sie sicher das:

■ Der Switch zuganglich ist und die Kabel leicht

angeschlossen werden konnen.

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.

Rack-Mounting or Free-Standing 15

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, take note of the guidelines given in

“Positioning the Switch” on

page 13.

The Switch is 1U (1.75 in.) high and will fit in a standard 19-inch rack.

CAUTION: Before continuing, disconnect all cables from the unit. Remove the self-adhesive pads from the underside of 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 2 Inserting the Screws

4 Repeat the two previous steps for the other side of

the unit.

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

suitable screws (not provided). Ensure that the venti lation holes are not obstructed.

6 Reconnect the network 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

“Aufstellen des Switch”.

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

16 CHAPTER 2: INSTALLING THE SWITCH

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 Plazieren 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) Baugrup-

penträger 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 four 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 cor ner. 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 out ages. 3Com recommends that you install power conditioning, especially in areas prone to black outs, 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 light ning and power surges.

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

CAUTION: The Switch has no ON/OFF switch; the only method of connecting or disconnecting main power is by connecting or disconnecting the power cord.

To power on the Switch:

1 Plug the power cord into the power socket on the

rear panel of the Switch. Refer to

“(8) Power Supply”

on page 12 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

Power LED” on page 11 for more information.

“(5)

Connecting a Network Device 17

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.

Ta bl e 4 summarizes the possible colors for the Power

LED after POST.

Ta bl e 4

Color State

Green The unit is powered on and ready for use

Yel lo w Power-on self-test or loopback test failed.

Off The unit is not receiving power:

Possible Power LED Colors After POST

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

■ Verify that the power cord is connected

correctly, and then try powering on the Switch again

■ If the Switch still does not operate, con-

tact your 3Com network supplier

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 assis-

tance.

Connecting a Network Device

To connect a network device to the Switch, use Category 5 unshielded or shielded (screened) 100 Ohm TP cables (or Category 3 cables for 10 Mbps connec tions).

For optimal connections, ensure that the cable length for each connection is not longer than 100 m (328 ft).

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 success fully completed.

■ Reset the Switch. See “Resetting to Factory

Defaults” on page 43.

18 CHAPTER 2: INSTALLING THE SWITCH

Figure 3 Connecting Devices to the Switch

Endstations on switched 100 Mbps connections

Endstations on switched 10 or 100 Mbps connection

1000 Mbps copper or fiber connection to backbone or server/workstation

Server on switched 1000 Mbps connection

1000 Mbps link

10 or 100 Mbps link

Baseline 10/100 switch

Baseline Switch 2226 Plus

To connect a device to the Switch:

1 Connect one end of the cable to an RJ-45 port on the

Switch.

2 Connect the other end to the appropriate RJ-45 port

on the connecting device.

For 1000BASE-T operation, 3Com recommends using Category 5e or 6 cables.

Using SFP Transceivers

The following sections describe how to insert and remove an SFP transceiver from an SFP slot.

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 Corporation World Wide 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 be one of the following:

■ 1000BASE-SX SFP transceiver – Use this transceiver

to connect the Switch directly to a multimedia 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 con ditioned launch cable.

If the SFP transceiver is faulty, it will not operate within the Switch. See

page 43.

“Troubleshooting” on

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

To insert an SFP transceiver:

1 Hold the transceiver so that the fiber connector is

toward you and the product label is visible, as shown

Performing Spot Checks 19

in Figure 4. Ensure the wire release lever is closed (in the upright position).

Figure 4 Inserting the SFP Transceiver

Product label

Wire release

lever

Suitable slot

n host Switcho

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 then re-insert it.

3 Remove the plastic protective cover, if fitted.

4 Connect the fiber cable.

5 The transceiver connects to the network using a

duplex LC connector. Attach a male duplex LC con nector 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 it 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 bl e 5.

20 CHAPTER 2: INSTALLING THE SWITCH

Ta bl e 5 Items to Check

Item Verify That

Cabling All external cabling connections are secure

Cooling fan Where possible, check that the cooling fan

and that no cables are pulled taut

is operating by listening to the unit. The fan is fitted on the right side of the unit (when viewed from the front).

If you experience any problems operating the Switch, refer to

“Troubleshooting” starting on page 43.

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 appli cation. 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

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.

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 the CD-ROM, and then double-click

The Welcome screen of Discovery appears.

\Discovery folder on

discovery.exe.

22 CHAPTER 3: CONNECTING TO THE WEB INTERFACE

Figure 5 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 6 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 Web interface loads in your Web browser.

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 inter face.

Navigating the Web Interface 23

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

Figure 7 Logon Screen

To log on to the Web interface:

1 In Username, type admin.

2 Leave the Password field blank.

3 Click OK.

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

Menu Item Description

VLANs Allows you to create VLAN groups,

Link Aggregation Allows you to set up and maintain

Statistics Displays the number of packets

Traffic Monitoring Allows you to perform port traffic

Traffic Prioritization Allows you to configure traffic prioriti-

Upgrade Allows you to upgrade the firmware

Support Displays 3Com contact information

Log Out Allows you to securely log off the

add port members, and specify how VLAN tagging is used

trunk membership for port groups

received and transmitted from each individual port

monitoring on the Switch. To monitor a port, you will also need a network analyzer.

zation for IP phones that are connected to the Switch

on the Switch. Before you can per form an upgrade, you first need to download firmware updates from the 3Com Web site.

and describes how to use the online help system

Web interface

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 dis played. The help pages provide information on the tasks that you can perform on each screen.

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 interface. If you know the Switch’s IP address, you can access the Web interface without using Dis covery.

This section describes how to access the interface directly, without using Discovery.

If you do not configure the Switch’s IP address settings, it will perform auto IP configuration to assign an IP address to itself. For more information, refer to

“Automatic IP Configuration” on page 29.

To determine the IP address that the Switch will assign to itself during auto IP configuration, check the sticker on the base of the Switch. This sticker contains the MAC address and default IP address of the Switch.

DHCP Assigned IP Address

If you set the IP address mode to DHCP, check the DHCP server for the IP address that is assigned to the Switch, and then use that IP address to access the Web interface.

For example, if the DHCP server assigned the IP address 192.168.0.123 to the Switch, start your Web browser, and then type

http://192.168.0.123.

Manually Assigned (Static) IP Address

If you assigned a static IP address to the Switch, you need to use that IP address to access the Web inter face the next time you want to configure the Switch.

For example, if you assigned the Switch the IP address

192.168.0.123, start your Web browser, and then type

http://192.168.0.123.

Accessing the Interface Without Using Discovery 25

26 CHAPTER 3: CONNECTING TO THE WEB INTERFACE

CONFIGURING THE SWITCH

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

■ Changing the Admin Password

■ Modifying the IP Address Settings

■ Configuring Port Settings

■ Configuring VLANs

■ Configuring Link Aggregation

■ Monitoring Traffic

■ Setting the Traffic Priority

■ Upgrading the Firmware

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 config ure the Switch.

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

■ Set the administration password to the Web inter-

face

■ Assign an IP address to the Switch

■ Upgrade the firmware

Viewing Status Information

The Status 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.

Figure 9 Status Screen

Ta bl e 7 lists the information that you can view on the

Status screen.

■ Configure the Switch’s advanced features

28 CHAPTER 4: CONFIGURING THE SWITCH

Ta bl e 7 Items on the Status Screen

Item Description

Firmware Version Displays the version of the firmware that

is currently installed on the Switch

DHCP Client Shows Enable if the Switch obtained its

IP address from a DHCP server on the network. Otherwise, this field shows Disable.

IP Address Displays the IP address that is assigned

to the Switch, whether it was obtained from a DHCP server or you manually set it

Subnet Mask Displays the subnet mask that is

assigned to the Switch

Gateway Displays the gateway address (if any)

that is assigned to the Switch

MAC Address Displays the MAC or physical address of

the Switch

ARL Ageing Displays the number of seconds before

the Switch removes dynamically learned addresses from its MAC address table. This is set to 300 seconds and is not con figurable.

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

The default admin account settings are:

■ User name – admin

■ Password – blank (no password)

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 pass

word to prevent unauthorized access to your network.

Figure 10 Change Administration Password Screen

To set the admin password:

Changing the Admin Password

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

1 On the menu, click Password. The Change Adminis-

tration Password screen appears.

2 In Old Password, type your current password.

By default, the Switch does not have any password. If this is your first time to access this screen or if you

Modifying the IP Address Settings 29

have not previously set a password, leave this field blank.

3 In New Password, type the password that you want to

set.

4 In Confirm Password, retype the password you typed

in step 3 to confirm.

The password is case-sensitive.

5 Click Apply.

If you want to modify the admin password later on, follow the same procedure.

If you forget the administration password after you set it, refer to

“Forgotten Password” on page 44 for

information on how to regain access to the Web interface.

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 manually assigning a static IP address.

Automatic IP Configuration

When you power on the Switch for the first time, it automatically uses the default IP address

169.254.x.y, where x and y are the last two bytes of

its MAC address.

To determine the exact IP address that the Switch assigns to itself during auto IP configuration, check the sticker on the base of the Switch. This sticker con tains the MAC address and default IP address of the Switch.

To detect its IP information using the automatic configuration process, the Switch goes through the following sequence of steps:

1 The Switch tries to configure itself with the default IP

address

169.254.x.y, where x and y are converted

from the last two bytes of its MAC address.

For example, if the MAC address were 08004E000102, the IP address would be

169.254.1.2. This address is

used if the Switch is operating in a standalone mode, or no other switches on the network have this IP address.

The Switch also assigns the subnet mask 255.255.0.0 (default class B mask) to itself.

By default, the Switch performs automatic IP configuration and assigns an IP address to itself. This is necessary for the Discovery application to be able to connect to the Web interface.

2 If this default IP address is already in use on the net-

work, then the Switch detects this, and increments the last byte of the MAC address by one to generate its IP address.

The IP address would therefore become 169.254.1.3.

3 The Switch repeats step 2 until an unused IP address

is found.

30 CHAPTER 4: CONFIGURING THE SWITCH

3Com recommends using automatic IP configuration only for the initial setup. Once you gain access to the console, you should assign an IP address to the Switch (either by using DHCP or assigning a static IP address) to ensure successful communication between the Switch and other network devices.

Setting the IP Address

To set the IP address for the Switch:

1 Click IP Settings on the menu. The IP Settings screen

appears.

Figure 11 IP Settings Screen

2 Configure the Switch’s IP settings. Available options

are listed in

Ta bl e 8.

Ta bl e 8 IP Setting Options

Option Description

IP Address Mode Specify how the Switch will get its IP

IP Address Specify an IP address that you want to

Subnet Mask Specify a subnet mask address that you

Default Gateway Specify the IP address of the gateway

MAC Address Read-only field that displays the Switch’s

address. Available options include:

■ DHCP – Select this option if you have

a DHCP server on the network and you want the Switch to automatically obtain an IP address from it

■ Static – Select this option if you want

to manually assign an IP address to the Switch

assign to the Switch. This option is only available if IP Address Mode is set to Static.

The IP address that is assigned to the Switch also becomes the IP address for VLAN 1.

want to assign to the Switch. This option is only available if IP Address Mode is set to Static.

The default subnet mask is

255.255.0.0.

router between this Switch and man agement stations on other network segments. This option is only available if IP Address Mode is set to Static.

MAC or physical address

3 After you configure the Switch’s IP address settings,

click Apply to save your changes.

Configuring Port Settings 31

Configuring Port Settings

Using the Web interface, you can configure the speed/duplex and flow control settings of each port. You can also shut down or disable ports from the Web interface.

Viewing Port Settings

To view the current port settings, click Port Configuration on the menu. The Port Configuration screen

appears (see ports and a summary of their current settings.

Figure 12 Port Configuration Screen

Ta bl e 9 describes the information that appears on the

Port Configuration screen.

Figure 12), displaying the status of all

Ta bl e 9 Port Configuration Summary Screen

Item Description

Port The physical number of the port that corre-

Link Status Indicates whether the port is currently

Speed/Duplex If the link is up, indicates the speed and

Flow Control If the link is up, indicates whether flow

Default Port Settings

If you do not configure the Switch’s port settings, the ports will use the following default settings:

■ All ports are enabled

■ Autonegotiation is enabled

■ Flow control is enabled

■ All ports are set to priority zero

sponds to the numbering of the ports on the front of the unit. Note that ports 25 and 26 are dual function ports. When the Small Form Factor Pluggable (SFP) trans ceiver ports are not in use, the number refers to the RJ-45 port. When an SFP module is inserted, the port number refers to this port, even if a fiber cable is not inserted.

To configure the settings of a particular port, click the port number.

The items AL1 to AL4 refer to trunk groups. Use these to configure the settings of a trunk’s member ports. See

ing Trunk Settings” on page 38.

active (up) or not (down)

duplex settings of the port

control is enabled on the port

“Configur-

32 CHAPTER 4: CONFIGURING THE SWITCH

Changing a Port’s Settings

If a port is a member of an aggregated link (or trunk), you will not be able to configure its individual port settings. All member ports of an aggregated link will have the same settings, and you can configure these by clicking the AL link on the Port Configuration screen. See

“Configuring Trunk Settings” on

page 38.

To change the settings of a port:

1 Under the Port column of the Port Configuration

screen, click the port number that you want to con figure. The Port Settings screen appears, as shown in

Figure 13.

Figure 13 Port Settings Screen

Ta bl e 10 Port Setting Options

Option Description

Status ■ Enable – Activates the port

■ Disable – Shuts down or disables the

port

By default, admin setting is set to enable.

Auto Negotiate Autonegotiation, which is enabled by

default, sets the optimum combination of speed and duplex that can be supported by both ends of the link. Available options for autonegotiation include:

■ Enable – Enables autonegotiation for the

port. If autonegotiation is enabled, options for Speed Duplex are unavail able.

■ Disable – Disables autonegotiation for

the port. If autonegotiation is disabled, you need to set the speed and duplex mode in Speed Duplex.

2 Configure the port settings. Available options are

listed in

Ta bl e 10.

Configuring VLANs 33

Option Description

Speed Duplex Sets the preferred speed and duplex mode

Flow Control When enabled, controls packet flow so

3 Click Apply to save your settings.

for the port. This option is only available when autonegotiation for the port is dis abled. Available speed and duplex modes include:

■ 10Mbps Half

■ 10Mbps Full

■ 100Mbps Half

■ 100Mbps Full

■ 1000Mbps Full (for ports 25 and 26

only) – See

Mbps Connections” on page 33.

that a sending device does not transmit more packets than a receiving device can process.

If flow control is disabled, packets may be dropped under certain periods of high traf fic loads.

By default, flow control is enabled.

“Speed/Duplex for 1000

To configure another port, click Port Configuration on the menu again, and then click the port number that you want to configure.

Speed/Duplex for 1000 Mbps Connections

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

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

ting, 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 1000Mbps full-duplex. Inserting an SFP transceiver into a gigabit port disables the corresponding RJ-45 port, even if no fiber cable is inserted.

Configuring VLANs

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 64 VLANs, add specific ports to a chosen VLAN (so that the port can only communi

cate with other ports on the VLAN), or configure a port make it a member of all VLANs.

34 CHAPTER 4: CONFIGURING THE SWITCH

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

Creating a VLAN

Use the VLANs page 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 14 VLANs Screen

Ports belonging to a VLAN must be set to either U (uplink) or D (desktop). Desktop VLAN ports can only be members of one VLAN at any time. Setting a port as an uplink (tagged) VLAN port forwards all VLAN traffic from the other ports on the Switch to this port. Use the uplink port function to connect the Switch to the backbone of the network. Traffic from all the VLANs on the switch is automatically forwarded to the uplink port or ports.

By default, all ports belong to VLAN 1.

CAUTION: At least one port must always be a 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.

To create a VLAN:

1 On the menu, click VLANs. The VLANs screen

appears.

2 In VLAN ID, click Create New VLAN.

3 In VLAN ID (1-4904), type an unused ID number for

the VLAN that you are creating. VLAN IDs range from 1 to 4904.

Figure 15 Create VLANs Screen

4 Define the VLAN membership by setting the state of

each port. To change states, click the icon under the port number repeatedly to cycle through the different states. Available states include:

■ N – Not a member

■ U – Uplink egress packets

■ D – Desktop egress packets

5 Click Apply to create the VLAN.

Configuring VLANs 35

For examples on setting up VLANs, refer to “Sample

VLAN Configurations”.

Sample VLAN Configurations

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

Setting Up Two VLANs on the Same Switch

Figure 16 illustrates how you can set up a simple

VLAN on the Switch using desktop connections.

Figure 16 Desktop VLAN Configuration

Endstations in VLAN 1

Baseline Switch 2250Baseline Switch 2226 Plus

Endstations in VLAN 2

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

“Creating a VLAN” for instructions. VLAN1 is the

default VLAN and already exists.

2 Set ports 7, 8, and 16 to D (desktop egress packet).

3 Click Apply.

Ports 7, 8, and 16 now belong to VLAN2, and will not be able communicate with any other ports, unless you add another port 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 uplink connections. This enables ports that are members of the same VLAN (but are on different switches) to communicate, pro vided that a port on each Switch is set to uplink, and that these ports are connected.

Server in VLAN 1

Server in VLAN 2

If you want to add ports 7, 8, and 16 to VLAN2 (as shown in

Figure 16), so that the ports on the default

36 CHAPTER 4: CONFIGURING THE SWITCH

(

Figure 17 Uplink VLAN Configuration

Endstation in VLAN 1 (Desktop)

Endstation in VLAN 2 (Desktop)

Endstation in VLAN 1

Switch 1 Port 16 in VLANs 1 and 2 (Uplink)

Switch 2 Port 8 in VLANs 1 and 2 (Uplink)

Deskto

Server in VLAN 1 (Desktop)

Server in VLAN 2 (Desktop)

To set up the configuration shown in Figure 17, do the following:

1 Create VLAN2 on both Switch 1 and Switch 2, and

assign the same name to it. 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 D (desktop egress packet). Set one port (for example, port 16) to U (uplink egress packet).

Click Apply.

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

VLAN2 to D (desktop egress packet). Set one port (for example, port 8) to U (uplink egress packet).

Click Apply.

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

port 16) to the uplink port on Switch 2 (in this exam ple, 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.

Removing a VLAN

To remove an existing VLAN:

1 In the VLAN ID list, select the VLAN ID that you want

to delete.

2 Click Remove.

The VLANs page refreshes, and the VLAN ID that you deleted disappears from the VLAN ID list.

Configuring Link Aggregation

Link aggregation, also called “port trunking”, refers to bonding multiple ports into a single group to effec tively 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).

Configuring Link Aggregation 37

The Switch does not support the Link Aggregation Control Protocol (LACP), which is specified in IEEE

802.3ad.

Trunk Membership

The Switch has four pre-defined trunks, each of which can support up to eight ports. possible membership groups for each trunk.

Ta bl e 11 Port Groups and Members

Port Group Ports

AL1 Ports 1-4, 13-16

AL2 Ports 5-8, 17-20

AL3 Ports 9-12, 21-24

AL4 Ports 25 and 26 (RJ-45 ports only)

These four port groups correspond to the four separate physical connector blocks on the front panel of the Switch. You cannot trunk ports that belong to dif ferent port groups.

A trunk can consist of either 10/100 ports or 10/100/1000 ports (fixed ports 25 and 26). It is not possible to have a trunk containing a mixture of 10/100 and 10/100/1000 ports. Adding port 25 or 26 to a trunk containing 10/100 ports will result in an error.

A trunk created using ports 25 and 26 can only use the fixed RJ45 10/100/1000 ports. SFP ports cannot be aggregated.

Ta bl e 11 lists the

“Configuring Trunk Settings” on

page 38.

Adding Ports to a Trunk

To add ports to a trunk:

1 On the menu, click Link Aggregation. The Link Aggre-

gation screen appears.

Figure 18 Link Aggregation Screen

2 Add ports to a trunk by selecting the option buttons

for the ports. For example, if you want to add ports 1 to 4 to Trunk 1, click the option buttons under ports 01 to 04 that are on the same row as Trunk 1.

Each trunk must not have more than eight member ports.

3 Click Apply.

38 CHAPTER 4: CONFIGURING THE SWITCH

CAUTION: If you try to add a port to a trunk and the speed setting of the port to be added does not match that of the trunk, an error message appears and port will not be added to the trunk.

Configuring Trunk Settings

Ports that are members of the same trunk will have the same speed/duplex, autonegotiation, and flow control settings. You cannot configure these settings for individual member ports.

To configure the settings of a trunk’s member ports:

1 On the menu, click Port Configuration. The Port Con-

figuration screen appears.

2 Under the Port column, click the port group that you

want to configure. The Port Settings screen appears.

Figure 19 Port Settings Screen

Viewing Statistics

The Statistics screen shows a summary of traffic statistics for all ports, as shown in Figure 20.

Figure 20 Statistics Screen

Figures that appear onscreen indicate the number of packets transmitted (Tx) and received (Rx).

3 Configure the status, autonegotiation, speed/duplex,

and flow control settings of the trunk as you would configure an individual port (see available options in

Ta bl e 10). Note however that these settings will be

applied to all members of the trunk.

4 Click Apply to save your changes.

■ To reset all packet counts to zero, click Clear

Counters.

■ To view detailed statistics for each port, click the

port number. The statistics page for the port appears, as shown in

Figure 21.

Monitoring Traffic 39

Figure 21 Port Statistics Screen

Figures on the Statistics screen for individual ports are not updated in real time. To view the latest statistics for the port, click Refresh.

Monitoring Traffic

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 in the stack.

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

toring, the Switch takes all the traffic going in and out of the monitor port and copies it to the analysis port.

CAUTION: The analysis port (Mirror From) should have a higher bandwidth than the monitor port (Mir

ror From). Otherwise, the Switch may not be able to copy all traffic effectively during periods of high traf

fic.

To set up traffic monitoring for a port:

1 Attach a network analyzer to a port.

2 Access the Web interface, and then click Traffic Mon-

itoring on the menu.

3 On the Port Mirroring screen, select the Enable check

box.

Figure 22 Traffic Monitoring Screen

4 In Mirror From, click the port number that you want

to monitor.

Only one port can be selected from the Mirror Form row, which means that you can only monitor one port at any given time.

5 In Mirror To, click the port number to which the port

analyzer is connected. Traffic to and from the port selected in Mirror From will be forwarded to this port.

40 CHAPTER 4: CONFIGURING THE SWITCH

6 Click Apply.

For information on how to interpret the output on the port analyzer, refer to its accompanying docu mentation.

Setting the Traffic Priority

You can configure traffic prioritization for devices and view a list of detected IP phones on the Traffic Prioriti zation screen. To access this screen, click Traffic Prior- itization on the menu.

Figure 23 Traffic Prioritization Screen

IP Phone Prioritization

Use the IP Phone Prioritization section to enable or

disable traffic prioritization for NBX or other IP phones.

Ta bl e 12 lists the available options for this

section.

CAUTION: To ensure that the Switch recognizes the NBX or other IP phone during phone initialization, do not connect any data source to the phone until the

phone has finished booting up.

Once the phone is available for use, any data source (for example, a computer) can then be connected to the phone's pass-through port. This only applies if you use a single wall jack for your network connec

tion and use the pass-through LAN port on the IP phone.

The Traffic Prioritization screen has two sections:

■ IP Phone Prioritization

■ List of Detected Phones

Upgrading the Firmware 41

Ta bl e 12 IP Phone Prioritization Options

Option Description

Enable NBX Phone Prioritization

Enable Phone MAC Address-based Prioriti zation

Disable Phone Prioritization

If you change any of these settings, click Apply in the IP Phone Prioritization section to save your changes.

List of Detected Phones

This section displays the MAC addresses of IP phones that are detected and given priority by the Switch. To display a phone that is connected to a port, select the port from the drop-down list.

Select to automatically detect and prioritize traffic from all NBX phones that are connected to the Switch.

By default, this option is selected.

If you are not using NBX phones

and you know the Organizational Unique Identifier (OUI) for the phones, select this option, and then type the OUI in the fields provided.

If this option is selected and the OUI specified, the Switch will auto matically detect these phones and prioritize traffic to and from them.

An OUI (sometimes called ‘vendor ID’) is the first 24 bits of a MAC address for a network-connected device (in this case, a phone), which indicate the specific vendor for that device.

Select to disable traffic prioritization for IP phones on the Switch

Upgrading the Firmware

3Com may release upgrade files for the firmware that is installed on the Switch. These firmware upgrades normally contain feature enhancements and fixes for known issues in previous releases.

To upgrade the firmware, there are two tasks that you need to perform:

1 Download the firmware upgrade file from the 3Com

Web site

2 Install the new firmware on the Switch

Downloading Firmware Updates

You can periodically check the 3Com Web site (

www.3Com.com) for firmware updates to the Switch.

To check for and download available firmware updates:

1 On the computer that you normally use to access the

Switch’s Web interface, start the Web browser, and then enter

www.3com.com in the Address or Location

bar.

2 Click Support & Downloads, and then click Down-

loads & Drivers. The Search for Downloads page

appears.

3 In Enter a Product Number, enter 3C16475BS, and

then click Quick Search. 3C16475BS is the product number for 3Com Baseline Switch 2226 Plus.

The Download Search Results page displays any available download for the Switch.

42 CHAPTER 4: CONFIGURING THE SWITCH

4 If a firmware update is available, download the

update files to the admin computer (computer that you use to access the Web interface).

Installing the Firmware on the Switch

After you finish downloading the upgrade files to the admin computer, you are ready to perform the firm ware upgrade.

To install the firmware:

1 On the admin computer, start your Web browser, and

then log on to the Switch’s Web interface.

2 On the menu, click Upgrade. The Upgrade screen

appears.

3 Click Yes to confirm that you want to upgrade the

firmware.

CAUTION: DO NOT interrupt the firmware upgrade process once it has started.

The Switch prepares for the upgrade process.

4 Click Continue.

5 Click Browse. A Choose File dialog box appears.

8 Click Continue. The Status screen appears.

To verify that the upgrade was successfully completed, check if the Firmware Version number on the Status. It should show the version of the firmware that you have just installed.

6 Select the upgrade file that you downloaded from the

3Com Web site, and then click Open.

7 On the Firmware Upgrade screen, click Upgrade.

The Switch copies the upgrade file on to itself, and then restarts. A progress bar on the Firmware Upgrade screen shows the progress of the upgrade.

When the upgrade process is complete, the message

Firmware Upgrade Success appears.

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 its factory defaults.

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

To reset the Switch to its factory defaults:

1 Using the tip of a pen (or a similar object), press the

Recovery button on the rear panel of the Switch. See

Figure 1 for illustration.

2 Power off the Switch, and then power it back on,

while keeping the Recovery button pressed.

4 Reset the Switch either by:

■ Accessing the Web interface using Discovery, and

then pressing the RESET button on the Fail-Safe Mode screen (see screen appears (instead of the logon screen) after you perform steps 1 to 3 of this procedure.

■ Powering off the Switch, and then powering it

back on.

The Switch will perform automatic IP configuration after you reset it. See on page 29 for more information.

Figure 24 Fail-Safe Mode Screen

Figure 24). The Fail-Safe Mode

“Automatic IP Configuration”

3 Release the Recovery button.

44 CHAPTER 5: TROUBLESHOOTING

Forgotten Password

If you forget the password to the Web interface after you set it, you will need to reset the Switch to regain access. See

“Resetting to Factory Defaults” on page 43 for instructions. After resetting the Switch,

you can log on to the Web interface again using the default admin account settings:

■ User name – admin

■ Password – blank (no password)

Forgotten Static IP Address

If you forget the static IP address that you assigned to the Switch and you need to access the Web interface, use the Discovery application to automatically detect the IP address and connect to the interface.

For information on using the Discovery application, refer to

“Running the Discovery Application” on

page 21.

Solving LED Issues

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

Chapter 1:

■ (2) Module Active LEDs

■ (3) Link/Activity LEDs

■ (5) Power LED

■ (6) Duplex LEDs

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

workstation'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 18 for

details.

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

rectly configured.

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

Solving Corrupted Firmware 45

The Switch supports full-duplex autonegotiation. If the connected device does not support autonegotia tion, ensure that it is configured for half-duplex operation only. If the connected device has autonegotiation disabled or overridden, and is config ured 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.

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

Solving Corrupted Firmware

If the firmware becomes corrupted, you must either:

■ Upgrade the firmware for the Switch

When the firmware is corrupted, the Switch automat-

ically goes into Fail-Safe mode.

To upgrade a corrupted firmware:

1 Download the latest firmware from the 3Com Web

site to the computer that you are using to access the Web interface.

2 Access the Web interface. The Fail-Safe Mode screen

appears, as shown in

3 Click Browse, and then follow the onscreen instruc-

Figure 24.

tions to upgrade the Switch to the required version of firmware.

To reset the Switch to its factory defaults, follow the instructions in

“Resetting to Factory Defaults” on

page 43.

CAUTION: Before recovering the Switch, save the Switch’s current configuration. Recovering the Switch will cause the current configuration to be lost.

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 return ing the unit:

■ Product number and serial number (printed on a

label supplied with the unit).

■ A brief description of the issue

■ Reset the Switch to factory defaults

46 CHAPTER 5: TROUBLESHOOTING

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 war ranty 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 Express ianSM can include 24x7 telephone technical support, software upgrades, onsite assistance or advance hardware replacement. Experienced engineers 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

and Guard-

projects. More information on 3Com maintenance and Professional Services is available at http://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 site at

http://www.3com.com/

3Com Knowledgebase helps you troubleshoot 3Com products. This query-based interactive tool is located at contains thousands of technical solutions written by 3Com support engineers.

http://knowledgebase.3com.com and

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

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

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

48 APPENDIX A: OBTAINING SUPPORT FOR YOUR PRODUCT

found at http://eSupport.3com.com/, or under the Product Support heading at

http://www.3com.com/

Software Upgrades are the software releases that follow the software version included with your origi nal product. In order to access upgrades and related documentation you must first purchase a service con tract 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

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

http://eSupport.3com.com/

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 pack

age, 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 pass

word.

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 tele phone number, URL or e-mail address from the list below.

Telephone numbers are correct at the time of publica-

tion. Find a current directory of support telephone numbers posted on the 3Com web site at

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

■ A list of system hardware and software, including

revision level

■ Diagnostic error messages

■ Details about recent configuration changes, if

applicable

Country Telephone Number

Asia, Pacific Rim Telephone Technical Support and Repair

Australia Hong Kong India

Indonesia Japan

Malaysia New Zealand Pakistan Philippines

P.R. of China Singapore S. Korea Ta iw a n Thailand

You can also obtain support in this region using the following e-mail: apr_technical_support@3com.com

Or request a repair authorization number (RMA) by fax using this number: +65 543 6348

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

From anywhere in these regions, call:

From the following countries, you may use the numbers shown:

1 800 678 515 800 933 486 +61 2 9424 5179 or 000800 6501111 001 803 61 009 00531 616 439 or 03 3507 5984 1800 801 777 0800 446 398 +61 2 9937 5083 1235 61 266 2602 or 1800 1 888 9469 800 810 3033 800 6161 463 080 333 3308 00801 611 261 001 800 611 2000

+44 (0)1442 435529

Country Telephone 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 the following URL: http://emea.3com.com/support/email.html

Country Telephone Number

01 7956 7124 070 700 770 7010 7289 01080 2783 0825 809 622 01805 404 747 06800 12813 1407 3387 1800 945 3794 199 161346 342 0808128 0900 777 7737 815 33 047 00800 441 1357 707 200 123 0800 995 014 9 021 60455 07711 14453 08488 50112 0870 909 3266

Latin America Telephone Technical Support and Repair

From the Caribbean, Central and South America, call:

50 APPENDIX A: OBTAINING SUPPORT FOR YOUR PRODUCT

Country Telephone Number

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

SAFETY INFORMATION

Important Safety Information

Please read the following safety information carefully before installing the 3Com Baseline Switch 2226 Plus.

WARNING: Installation and removal of the unit must be carried out by qualified personnel only.

WARNING: If installing the Switch unit in a stack with other units, the Switch unit must be installed below the narrower units and above the deeper units.

WARNING: The unit must be earthed (grounded) to ensure compliance with safety standards.

WARNING: The appliance coupler (the connector to the unit and not the wall plug) must have a configu ration for mating with an EN60320/IEC320 appliance inlet.

WARNING: The socket outlet must be near to the unit and easily accessible. You can only remove power from the unit by disconnecting the power cord from the outlet.

WARNING: This unit operates under SELV (Safety Extra Low Voltage) conditions according to IEC 60. The conditions are only maintained if the equipment to which it is connected also operates under SELV conditions.

WARNING: France and Peru only

This unit cannot be powered from IT† supplies. If your supplies are of IT type, this unit must be powered by 230 V (2P+T) via an isolation transformer ratio 1:1, with the secondary connection point labelled Neutral, connected directly to earth (ground).

†

Impédance à la terre

WARNING: Power cord set

This must be approved for the country where it will be used.

U.S.A. and Canada ■ The cord set must be UL-approved

Denmark The supply plug must comply with Sec-

Switzerland The supply plug must comply with

and CSA certified.

■ The minimum specifications for the

flexible cord are: No. 18 AWG Type SV or SJ 3-conductor

■ The cord set must have a rated cur-

rent capacity of at least 10 A.

■ The attachment plug must be an

earth-grounding type with a NEMA 5-15P (15 A, 125 V) or NEMA 6-15P (15 A, 250 V) configuration.

tion 107-2-D1, Standard DK2-1a or DK2-5a.

SEV/ASE 1011.

52 APPENDIX B: SAFETY INFORMATION

UK ■ The supply plug must comply with

Europe ■ The supply plug must comply with

WARNING: Fiber optic ports – optical safety

BS1363 (3-pin 13-amp) and be fitted with a 5 A fuse which complies with BS1362.

■ The mains cord must be <HAR> or

<BASEC> marked and be of type HO3VVF3GO.75 (minimum).

CEE7/7 (“SCHUKO”)

■ The mains cord must be <HAR> or

<BASEC> marked and be of type HO3VVF3GO.75 (minimum).

Never look at the transmit laser while it is powered on. Never look directly at the fiber ports and fiber cable ends when they are powered on.

WARNING: Use of controls or adjustments of performance or procedures other than those specified herein may result in hazardous laser emissions.

AVERTISSEMENT: Si vous entassez l’unité Switch avec les unités SuperStack 3 Hub, l’unité 2900 doit être installée en dessous des unités Hub plus étroites.

AVERTISSEMENT: Vous devez raccorder ce groupe à une sortie mise à la terre (mise à la masse) afin de respecter les normes internationales de sécurité.

AVERTISSEMENT: Le coupleur d’appareil (le connecteur du groupe et non pas la prise murale) doit respecter une configuration qui permet un branche

ment sur une entrée d’appareil EN60320/IEC 320.

AVERTISSEMENT: La prise secteur doit se trouver à proximité de l’appareil et son accès doit être facile. Vous ne pouvez mettre l’appareil hors circuit qu’en débranchant son cordon électrique au niveau de cette prise.

AVERTISSEMENT: L’appareil fonctionne à une tension extrêmement basse de sécurité qui est conforme à la norme IEC60950. Ces conditions ne sont main

tenues que si l’équipement auquel il est raccordé fonctionne dans les mêmes conditions.

AVERTISSEMENT: France et Pérou uniquement

Consignes Importantes de Sécurité

Veuillez lire à fond l'information de la sécurité suivante avant d'installer le Baseline Switch 2226 Plus.

AVERTISSEMENT: L’installation et la dépose de ce groupe doivent être confiés à un personnel qualifié.

Ce groupe ne peut pas être alimenté par un dispositif à impédance à la terre. Si vos alimentations sont du type impédance à la terre, ce groupe doit être ali

menté par une tension de 230 V (2 P+T) par le biais d’un transformateur d’isolement à rapport 1:1, avec un point secondaire de connexion portant l’appella

tion Neutre et avec raccordement direct à la terre (masse).

Wichtige Sicherheitshinweise Informationen 53

AVERTISSEMENT: Cordon électrique

Il doit être agréé dans le pays d’utilisation.

Etats-Unis et Canada:

Danemark: La prise mâle d’alimentation doit respecter la

Suisse: La prise mâle d’alimentation doit respecter la

Europe ■ La prise secteur doit être conforme aux

■ Le cordon doit avoir reçu l’homologation

des UL et un certificat de la CSA.

■ Le cordon souple doit respecter, à titre

minimum, les spécifications suivantes: calibre 18 AWG type SV ou SJ à 3 conducteurs

■ Le cordon doit être en mesure d’acheminer

un courant nominal d’au moins 10 A.

■ La prise femelle de branchement doit être

du type à mise à la terre (mise à la masse) et respecter la configuration NEMA 5-15P (15 A, 125 V) ou NEMA 6-15P (15 A, 250 V).

section 107-2 D1 de la norme DK2 1a ou DK2 5a.

norme SEV/ASE 1011.

normes CEE 7/7 (“SCHUKO”)

■ LE cordon secteur doit porter la mention

<HAR> ou <BASEC> et doit être de type HO3VVF3GO.75 (minimum).

optiques et les embouts de câbles à fibres optiques tant qu'ils sont sous tension.

AVERTISSEMENT: L'utilisation de contrôles, de réglages de performances ou de procédures autres que ceux qui sont spécifiés au sein du présent docu ment risquent d'entraîner l'exposition à des rayonnements laser dangereux.

Wichtige Sicherheitshinweise Informationen

Bitte unbedingt vor dem Einbauen des Baseline Switch 2226 Plus die folgenden Sicherheitsanweisun gen durchlesen.

WARNUNG: Die Installation und der Ausbau des Geräts darf nur durch Fachpersonal erfolgen.

WARNUNG: Wenn der Baseline Switch 2226 Plus mit anderen 3Com Hubs oder Switche gestapelt werden soll, müssen gr Hubs eingebaut werden.

WARNUNG: Das Gerät muß an eine geerdete Steckdose angeschlossen werden, welche die internationalen Sicherheitsnormen erfüllt.

össere Geräte unter den schmaleren

AVERTISSEMENT: Ports pour fibres optiques – sécurité sur le plan optique

Ne regardez jamais le laser tant qu'il est sous tension. Ne regardez jamais directement le port à fibres

WARNUNG: Der Gerätestecker (der Anschluß an das Gerät, nicht der Wandsteckdosenstecker) muß einen gemäß EN 60320/IEC 320 konfigurierten Geräteein

gang haben.

WARNUNG: Die Netzsteckdose muß in der Nähe des Geräts und leicht zugänglich sein. Die Stromversor

gung des Geräts kann nur durch Herausziehen des

54 APPENDIX B: SAFETY INFORMATION

Gerätenetzkabels aus der Netzsteckdose unterbrochen werden.

WARNUNG: Der Betrieb dieses Geräts erfolgt unter den SELV-Bedingungen (Sicherheitskleinstspannung) gemäß IEC 60950. Diese Bedingungen sind nur gege ben, wenn auch die an das Gerät angeschlossenen Geräte unter SELV-Bedingungen betrieben werden.

WARNUNG: Stromkabel

Dies muss von dem Land, in dem es benutzt wird geprüft werden.

Schweiz ■ Dieser Stromstecker muß die SEV/ASE

Europe ■ Das Netzkabel muß vom Typ

1011Bestimmungen einhalten.

HO3VVF3GO.75 (Mindestan forderung) sein und die Aufschrift <HAR> oder <BASEC> tragen.

■ Der Netzstecker muß die Norm CEE

7/7 erfüllen (”SCHUKO”).

WARNUNG: Die Installation und der Ausbau des Geräts darf nur durch Fachpersonal erfolgen.

anderer als der hierin genannten Weise kann zu gefährlichen Laseremissionen führen.

Información de Seguridad Importante

ADVERTENCIA: La instalación y retirada de la unidad

sólo debe llevarla a cabo personal cualificado.

ADVERTENCIA: La unidad debe estar conectada a tierra para garantizar el cumplimiento de las normas de seguridad.

ADVERTENCIA: El acoplador del equipo (el conector para la unidad y no la toma de la pared) debe tener una configuración que se adapte a una entrada del equipo EN60320/IEC320.

ADVERTENCIA: El enchufe debe estar cerca de la unidad y ser de fácil acceso. La única forma de cortar la alimentación de la unidad consiste en desconectar el cable eléctrico de la toma de corriente.

ADVERTENCIA: Esta unidad funciona en condiciones SELV (voltaje extrabajo de seguridad) de conformidad con la norma IEC 60950. Las condiciones sólo se man tienen si el equipo al que esté conectada la unidad también funciona en condiciones SELV.

Niemals ein Übertragungslaser betrachten, während dieses eingeschaltet ist. Niemals direkt auf die Faser

ansnchlüsse und auf die Faserkabelenden schauen, während diese eingeschaltet sind.

WARNUNG: Die Verwendung von Steuerelementen oder die Anpassung von Leistungen und Verfahren in

ADVERTENCIA: Sólo para Francia y Perú

Esta unidad no puede recibir corriente de fuentes IT†. Si las fuentes de suministro de corriente son de tipo IT, esta unidad debe recibir 230 V (2P+T) a través de un transformador aislador con relación 1:1, con el punto de conexión secundario etiquetado como neutro conectado directamente a tierra.

Información de Seguridad Importante 55

†Impédance à la terre.

ADVERTENCIA: Conjunto de cables eléctricos

Debe estar homologado para el país donde se utilice.

EE.UU. y Canadá

Sólo para el Reino Unido

Sólo para Europa

■ El conjunto de cables debe estar

homologado por UL y tener la certificación CSA.

■ La especificación mínima del cable

flexible es:

■ Nº 18 AWG

■ Tipo SV o SJ

■ Tres conductores

■ El conjunto de cables debe tener una

capacidad de corriente nominal de al menos 10

■ El enchufe de conexión debe ser de

tipo de toma de tierra con una configuración NEMA 5-15P (15 125

V) o NEMA 6-15P (15 A, 250 V).

■ La toma de alimentación debe

cumplir la norma BS1363 (3 patillas, 13

A) e instalarse con un fusible de

A que cumpla BS1362.

■ El cable de alimentación de red debe

tener la marca <HAR> o <BASEC> y ser de tipo H03VVF3GO.75 (mínimo).

■ La toma de alimentación debe

cumplir la norma CEE 7/7 ("SCHUKO").

■ El cable de alimentación de red debe

tener la marca <HAR> o <BASEC> y ser de tipo H03VVF3GO.75 (mínimo).

Dinamarca ■ La toma de alimentación debe

cumplir la sección 107-2-D1 de la norma DK2-1a o DK2-5a.

Suiza ■ La toma de alimentación debe

cumplir la norma SEV/ASE 1011.

ADVERTENCIA: Puertos de fibra óptica: seguridad óptica

DISPOSITIVO LÁSER

DE CLASE 1

No mire nunca al láser de transmisión mientras esté encendido. No mire nunca directamente al puerto de transmisión de fibra óptica ni a los extremos del cable de fibra óptica mientras estén conectados.

ADVERTENCIA: El uso de controles, ajustes de rendimiento o procedimientos distintos a los especificados en este documento puede producir emisiones de láser peligrosas.

56 APPENDIX B: SAFETY INFORMATION

Importanti Informazioni di Sicurezza

AVVERTENZA: Le operazioni di installazione e rimozione dell'unità devono essere eseguite esclusiva mente da personale qualificato.

AVVERTENZA: Per rispettare gli standard di sicurezza, è necessario che l'unità disponga di messa a terra.

AVVERTENZA: L'accoppiatore (il connettore all'unità e non la spina a muro) deve avere una configurazione abbinabile a una presa EN60320/IEC320.

AVVERTENZA: La presa deve trovarsi vicino all'unità ed essere facilmente accessibile. L'unico modo per rimuovere l'alimentazione dall'unità consiste nello scollegare il cavo di alimentazione dalla presa.

AVVERTENZA: Questa unità funziona alle condizioni SELV (Safety Extra Low Voltage) previste dalla norma IEC 60950. Tali condizioni sono mantenute solo se anche l'apparecchiatura a cui è collegata opera nelle stesse condizioni.

AVVERTENZA: Solo per Francia e Perù.

Questa unità non può ricevere alimentazione di tipo IT†. Se l'alimentazione è di tipo IT, l'unità deve essere alimentata a 230 V (2P+T) tramite un trasformatore di isolamento con rapporto 1:1, con il punto di collega mento secondario contrassegnato come Neutro, collegato direttamente a terra.

†Impédance à la terre.

AVVERTENZA: Set dei cavi di alimentazione

Deve essere approvato per il paese in cui viene utilizzato

Stati Uniti e Canada

Solo Regno Unito

Solo Europa ■ La spina di alimentazione deve essere

Danimarca ■ La spina di alimentazione deve essere

Svizzera ■ La spina di alimentazione deve essere

■ Il cavo deve avere l'approvazione UL

e la certificazione CSA

■ "La specifica minima per il cavo

flessibile è: N. 18 AWG Tipo SV o SJ 3 conduttori

■ Il set di cavi deve avere una capacità

nominale di almeno 10 A.

■ La spina di collegamento deve essere

dotata di messa a terra, con configurazione NEMA 5-15P (15 A, 125 V) o NEMA 6-15P (15 A, 250 V).

■ La spina di alimentazione deve essere

conforme BS1363 (3 pin 13 amp) e dotata di un fusibile da 5 A conforme BS1362.

■ Il cavo dell'alimentazione di rete deve

essere contrassegnato dai marchi <HAR> o <BASEC> ed essere di tipo H03VVF3GO.75 (minimo).

conforme CEE 7/7 (tipo "SCHUKO").

■ Il cavo dell'alimentazione di rete deve

essere contrassegnato dai marchi <HAR> o <BASEC> ed essere di tipo H03VVF3GO.75 (minimo).

conforme alla sezione 107-2-D1, standard DK2-1a o DK2

conforme SEV/ASE 1011

AVVERTENZA: Le porte RJ-45 sono prese dati RJ-45 schermate. Non è pertanto possibile utilizzarle come normali prese telefoniche né per collegare l'unità a un PBX (Private Branch Exchange, centralino telefonico privato) o a una rete telefonica pubblica. Collegare a queste porte solo prese dati RJ-45, sistemi di telefonia o telefoni di rete. A queste prese dati è possibile colle gare cavi dati schermati o non schermati con connettori schermati o non schermati.

AVVERTENZA: porte a fibre ottiche - protezione degli occhi

PRODOTTO LASER

CLASSE 1

Non guardare mai il LED di trasmissione attraverso uno strumento ottico di ingrandimento quando è acceso. Non guardare mai direttamente la porta TX a fibre ottiche e le estremità del cavo a fibre ottiche quando sono accese.

Importanti Informazioni di Sicurezza 57

AVVERTENZA: L'esecuzione di procedure o regolazioni non previste dalle istruzioni fornite in questa guida può provocare emissioni laser nocive.

58 APPENDIX B: SAFETY INFORMATION

TECHNICAL INFORMATION

Related Standards

The 3Com Baseline Switch 2226 Plus has been designed to the following standards:

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

MAC Address 4096

Safety UL 60950-1 & CAS 60950-1

EMC Emissions EN 55022 Class A, FCC Part 15

Immunity EN 55024

Environmental

Operating Temperature 0–50 °C (32–113 °F)

Humidity 10–95% (non-condensing)

Standard EN 60068 (IEC 68)—various parts

IEEE 802.3u (Fast Ethernet), IEEE

802.3ab and IEEE 802.3z (Gigabit Ethernet), IEEE 802.3x (Flow Con trol), IEEE 802.1D 1998 (Bridging)

(CSA/CUS), IEC 60950-1(CE), EN 60950-1 (T

Subpart A, VCCI

ÜV/GS)

B Class A, ICES-003 Class Class A

Physical

Width 440 mm (17.3 in.)

Length 173 mm (6.8 in.)

Height 43.6 mm (1.75 in.) or 1U

Weight 1.7 kg (3.8 lb)

Mounting Free-standing, or 19 in.

rack-mounted using the supplied mounting kit

Electrical

Power Inlet IEC 320

AC Line Frequency 50/60 Hz

Input Voltage 100–240 VAC

Current Rating 1 ampere (maximum)

Maximum Power Consumption

Maximum Power Dissipation

196 watts

668.95 BTU/hr

60 APPENDIX C: TECHNICAL INFORMATION

GLOSSARY

10BASE-T

The IEEE specification for 10 Mbps Ethernet over Category 3, 4 or 5 twisted pair cable.

100BASE-TX

The IEEE specification for 100 Mbps Fast Ethernet over Category 5 twisted-pair cable.

1000BASE-LX

IEEE 802.3z specification for Gigabit Ethernet over 9/125 micron core single-mode fiber cable.

1000BASE-SX

IEEE 802.3z specification for Gigabit Ethernet over two strands of 50/125 or 62.5/125 micron core multi mode fiber cable.

1000BASE-T

IEEE 802.3ab specification for Gigabit Ethernet over 100-ohm Category 5, 5e or 6 twisted-pair cable (using all four wire pairs).

autonegotiation

Autonegotiation is where two devices sharing a link, automatically configure to use the best common speed. The order of preference (best first) is: 1000BASE-T full-duplex, 100BASE-TX full-duplex, 100BASE-TX half-duplex, 10BASE-T full-duplex, and 10BASE-T half-duplex. Autonegotiation is defined in

the IEEE 802.3 standard for Ethernet and is an opera tion that takes place in a few milliseconds. Autonegotiation must be enabled for the 1000BASE-T ports to operate at 1000 Mbps, full-duplex.

bandwidth

The information capacity (measured in bits per second) that a channel can transmit. The bandwidth of Ethernet is 10 Mbps, the bandwidth of Fast Ethernet is 100 Mbps and Gigabit Ethernet is 1000 Mbps.

category 3 cable

One of five grades of Twisted Pair (TP) cabling defined by the EIA/TIA-568 standard. Category 3 is voice

category 5 cable

grade cable and can only be used in Ethernet net works (10BASE-T) to transmit data at speeds of up to 10 Mbps.

One of five grades of Twisted Pair (TP) cabling defined by the EIA/TIA-568 standard. Category 5 can be used in Ethernet (10BASE-T) and Fast Ethernet networks (100BASE-TX) and can transmit data at speeds of up to 100 Mbps. Category 5 cabling is better to use for network cabling than Category 3, because it supports both Ethernet (10 Mbps) and Fast Ethernet (100 Mbps) speeds.

62 GLOSSARY

category 5e cables

One of five grades of Twisted Pair (TP) cabling defined by the EIA/TIA-568 standard. Category 5e can be used in Ethernet (10BASE-T), Fast Ethernet (100BASE-TX) and Gigabit Ethernet (1000BASE-T) networks, and can transmit data at speeds of up to 1000 Mbps.

category 6 cable

One of five grades of Twisted Pair (TP) cabling defined by the EIA/TIA-568-B standard. Category 6 can be used in Ethernet (10BASE-T), Fast Ethernet (100BASE-TX) and Gigabit Ethernet (1000BASE-T) networks, and can transmit data at speeds of up to 1000 Mbps.

client

The term used to describe the desktop PC that is connected to your network.

DHCP

Dynamic Host Configuration Protocol. This protocol automatically assigns an IP address for every com puter on your network. Windows 95, Windows 98 and Windows NT 4.0 contain software that assigns IP addresses to workstations on a network. These assignments are made by the DHCP server software that runs on Windows NT Server.

Ethernet

A LAN specification developed jointly by Xerox, Intel and Digital Equipment Corporation. Ethernet net works use CSMA/CD to transmit packets at a rate of 10 Mbps and 100 Mbps over a variety of cables.

Ethernet address

See MAC address.

Fast Ethernet

An Ethernet system that is designed to operate at 100 Mbps.

Gigabit Ethernet

An Ethernet system that is designed to operate at 1000 Mbps.

full-duplex

A system that allows packets to be transmitted and received at the same time and, in effect, doubles the potential throughput of a link.

half-duplex

A system that allows packets to be transmitted and received, but not at the same time. Half-duplex is not supported for 1000 Mbps. Contrast with full-duplex.

IEEE

Institute of Electrical and Electronics Engineers. This

American organization was founded in 1963 and sets standards for computers and communications.

IEEE 802.1D

Specifies a general method for the operation of MAC bridges, including the Spanning Tree Protocol.

IEEE 802.1Q

VLAN Tagging - Defines Ethernet frame tags that

carry VLAN information. It allows switches to assign endstations to different virtual LANs, and defines a

GLOSSARY 63

standard way for VLANs to communicate across switched networks.

IEEE 802.1p

An IEEE standard for providing quality of service (QoS) in Ethernet networks. The standard uses packet tags that define up to eight traffic classes and allows switches to transmit packets based on the tagged pri ority value.

IEEE 802.3ad

A standard that defines link aggregation. 802.3ad is now incorporated into the relevant sections of the IEEE Std. 802.3-2002.

IETF

Internet Engineering Task Force. An organization responsible for providing engineering solutions for TCP/IP networks. In the network management area, this group is responsible for the development of the SNMP protocol.

Internet Protocol. IP is a layer 3 network protocol that is the standard for sending data through a network. IP is part of the TCP/IP set of protocols that describe the routing of packets to addressed devices. An IP address consists of 32 bits divided into two or three fields: a network number and a host number or a net work number, a subnet number, and a host number.

IP Address

Internet Protocol Address. A unique identifier for a device attached to a network using TCP/IP. The

address is written as four octets separated with peri

ods (full-stops), and is made up of a network section, an optional subnet section and a host section.

LAN

Local Area Network. A network of end stations (such as PCs, printers, servers) and network devices (hubs

and switches) that cover a relatively small geographic area (usually not larger than a floor or building). LANs are characterized by high transmission speeds over short distances (up to 1000 meters).

Layer 2

Data Link layer in the ISO 7-Layer Data Communications Protocol. This is related directly to the hardware interface for the network devices and passes on traf

fic based on MAC addresses.

link aggregation

See Trunking.

MAC

Media Access Control. A protocol specified by the IEEE for determining which devices have access to a network at any one time.

MAC address

Media Access Control Address. Also called the hard-

ware, physical, or Ethernet address. A layer 2 address associated with a particular network device. Most devices that connect to a LAN have a MAC address assigned to them as they are used to identify other devices in a network. MAC addresses are 6 bytes long.

64 GLOSSARY

network

ping

protocol

RJ-45

server

SFP

A network is a collection of computers and other computer equipment that are connected for the pur pose of exchanging information or sharing resources. Networks vary in size, some are within a single room, others span continents.

Packet Internet Groper. An internet utility used to determine whether a particular IP address is online. It is used to test and debug a network by sending out a packet and waiting for a response.

A set of rules for communication between devices on a network. The rules dictate format, timing, sequenc ing and error control.

A standard connector used to connect Ethernet networks. The “RJ” stands for “registered jack.”

A computer in a network that is shared by multiple end stations. Servers provide end stations with access to shared network services such as computer files and printer queues.

Small Form Factor Pluggable (SFP) Connectors are based on an open standard that enables hot swap

ping of various types of fiber optic and copper-based transceivers into the host equipment.

subnet address

An extension of the IP addressing scheme that allows

a site to use a single IP network address for multiple physical networks.

subnet mask

A subnet mask, which may be a part of the TCP/IP information provided by your ISP, is a set of four numbers configured like an IP address. It is used to create IP address numbers used only within a particu

lar network (as opposed to valid IP address numbers recognized by the Internet, which must assigned by InterNIC).

subnet

A network that is a component of a larger network.

switch

A device that interconnects several LANs to form a single logical LAN that comprises of several LAN seg

ments. Switches are similar to bridges, in that they connect LANs of a different type; however they con

nect more LANs than a bridge and are generally more sophisticated.

TCP/IP

Transmission Control Protocol/Internet Protocol. This is the name for two of the most well-known protocols developed for the interconnection of networks. Origi

nally a UNIX standard, TCP/IP is now supported on almost all platforms, and is the protocol of the Inter

net.

TCP relates to the content of the data travelling through a network — ensuring that the information sent arrives in one piece when it reaches its destina tion. IP relates to the address of the end station to which data is being sent, as well as the address of the destination network.

traffic monitoring

Enables the monitoring of port traffic by attaching a network analyzer to one switch port, in order to mon itor the traffic of other ports on the Switch.

trunking

A method that specifies how to combine several lower-speed physical links to create a single high-speed logical link.

VLAN

Virtual LAN. 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 barri ers, and allows users to share information and resources as though located on the same LAN.

GLOSSARY 65

66 GLOSSARY

INDEX

Numbers

1000BASE-LX 61 1000BASE-SX 61 1000BASE-T 61 100BASE-TX 61 10BASE-T 61

auto IP configuration 29

default IP address 29

default mask 29 autonegotiation 7, 32 autosensing 7

bandwidth 61

client 62 configuration

overview 27 connecting

network device 17

SFP transceivers 18 conventions

notice icons, About This Guide 5

text, About This Guide 5

DHCP 62 Discovery 21 dynamic host control protocol See DHCP

Ethernet 62

fail-safe mode 43, 45 Fast Ethernet 62 flow control 33 forgotten IP address 44 forgotten password 44 free-standing 14 front panel

Duplex LEDs 12 Link/Activity LEDs 10 Module Active LEDs 10 Power LED 11 RJ-45 ports 9 self-adhesive pads 12 SFP ports 11

full-duplex 62

Gigabit Ethernet 62

half-duplex 62

IEEE 62 IETF 63 installing 13 IP address

auto configuration 29

modifying 29 setting 30

IP defined 63

LAN defined 63 LED issues 44 LEDs

Duplex 12 Link/Activity 10 Module Active 10

Power 11 link aggregation 36 local area network 63

MAC address 63 media access control 63 monitoring traffic 39 mounting kit

contents 13

using 15

network analyzer 39 network cables

category 3 61

category 5 61

category 5e 62

category 6 62 network defined 64

68 INDEX

package contents 12 panels

front 9 rear 12

password

changing 28 default (blank) 28

setting 28 physical features 9 port settings

configuring 31

default settings 31

flow control 33

modifying individual ports 32

speed/duplex 33

viewing 31 ports

RJ-45 9

SFP 8, 11 positioning 13 POST 17 powering on 16 power-on self-test See POST prioritization

IP phones 40 protocol defined 64

rack-mounting 14 rear panel

power supply 12

Recovery button 12 resetting to factory defaults 43 RJ-45

defined 64

ports 9

safety information

German 54

server defined 64 SFP ports 8, 11 SFP transceivers 18

approved (supported) 18 inserting 18

removing 19 speed/duplex 33 spot checks 19 subnet mask 64 switch defined 64

TCP/IP 63

defined 64 traffic 65

monitoring 39

setting the priority 40 traffic prioritization 8, 40

IP phones 8

priority queuing 8 traffic priority levels 8 troubleshooting 43

corrupted firmware 45

forgotten IP address 44

forgotten password 44

LED-related issues 44

POST failed 17 trunking See link aggregation

user name

default 28

viewing

detected IP phones 41

individual port statistics 38

port settings 31

statistics 38

status information 27 VLANs 33

creating 34, 36 desktop 34 maximum supported 33 not a member 34 removing 36 sample configurations 35 uplink 34

Web interface

accessing directly 24 accessing using Discovery 21 buttons 24 connecting 21 logging on 22 menu 23 navigating 23 requirements for accessing 21

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 when the equipment is operated in a commercial environment. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the 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.

CE STATEMENT (EUROPE)

This product complies with the European Low Voltage Directive 73/23/EEC and EMC Directive 89/336/EEC as amended by European Directive 93/68/EEC/.

VCCI STATEMENT

CSA STATEMENT

This Class A digital apparatus meets all requirements of the Canadian Interference-Causing Equipment Regulations.

Cet appareil numérique de la classe A respecte toutes les exigences du Règlement sur le matériel brouilleur du Canada.

3com 3C16475BS User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

ABOUT THIS GUIDE

Conventions

Related Documentation

Documentation Comments

INTRODUCING THE BASELINE SWITCH

Overview of the Baseline Switch 2226 Plus

Features and Capabilities

Autosensing of MDI/MDIX Connections

Autonegotiating 10/100 Mbps Ports

SFP Ports

Traffic Prioritization

Prioritization of IP Phone Traffic

Traffic Priority Queuing

Physical Features

Front Panel

(1) 24 RJ-45 Ports

(2) Module Active LEDs

(3) Link/Activity LEDs

(4) 10/100/1000BASE-T/SFP Ports

(5) Power LED

(6) Duplex LEDs

(7) Self-Adhesive Pads

Package Contents

Rear Panel

(8) Power Supply

(9) Recovery Button

INSTALLING THE SWITCH

Before You Begin

Positioning the Switch

Rack-Mounting or Free-Standing

Aufstellen des Switch

Using the Mounting Kit

Montagesatz Anweisungen

Placing Units On Top of Each Other

Supplying Power to the Switch

Checking for Correct Operation

Connecting a Network Device

Using SFP Transceivers

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

Accessing the Interface Without Using Discovery

DHCP Assigned IP Address

Manually Assigned (Static) IP Address

CONFIGURING THE SWITCH

Configuration Overview

Viewing Status Information

Changing the Admin Password

Modifying the IP Address Settings

Automatic IP Configuration

Setting the IP Address

Configuring Port Settings

Viewing Port Settings

Default Port Settings

Changing a Port’s Settings

Speed/Duplex for 1000 Mbps Connections

Configuring VLANs

Creating a VLAN

Sample VLAN Configurations

Setting Up Two VLANs on the Same Switch

Setting Up VLAN Across Two Switches

Removing a VLAN

Configuring Link Aggregation

Trunk Membership

Adding Ports to a Trunk

Configuring Trunk Settings

Viewing Statistics

Monitoring Traffic