3Com 3C17203, 3C17204, SuperStack 3 Switch 4400 PWR, 3C17205, SuperStack 3 Switch 4400 SE Getting Started Manual

DUA1720-3AAA09.book Page 1 Wednesday, July 6, 2005 4:33 PM

SuperStack® 3

Switch 4400 Family
Getting Started Guide

Switch 4400 (3C17203)
Switch 4400 (3C17204)
Switch 4400 PWR (3C17205)
Switch 4400 SE (3C17206)
Switch 4400 FX (3C17210)

http://www.3com.com/

Part No. DUA1720-3AAA09
Published July 2005

DUA1720-3AAA09.book Page 2 Wednesday, July 6, 2005 4:33 PM

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

Copyright © 2001, 2002, 2003, 2004, 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
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If there is any software on removable media described in this documentation, it is furnished under a license
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please contact 3Com and a copy will be provided to you.

UNITED STATES GOVERNMENT LEGEND

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

All technical data and computer software are commercial in nature and developed solely at private expense.
Software is delivered as “Commercial Computer Software” as defined in DFARS 252.227-7014 (June 1995) or
as a “commercial item” as defined in FAR 2.101(a) and as such is provided with only such rights as are
provided in 3Com’s standard commercial license for the Software. Technical data is provided with limited rights
only as provided in DFAR 252.227-7015 (Nov 1995) or FAR 52.227-14 (June 1987), whichever is applicable.
You agree not to remove or deface any portion of any legend provided on any licensed program or
documentation contained in, or delivered to you in conjunction with, this User Guide.

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

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

Intel and Pentium are registered trademarks of Intel Corporation. Microsoft, MS-DOS, Windows, and Windows
NT are registered trademarks of Microsoft Corporation. Novell and NetWare are registered trademarks of
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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
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the inks are vegetable-based with a low heavy-metal content.

ENCRYPTION

This product contains encryption and may require U.S. and/or local government authorization prior to export
or import to another country.

DUA1720-3AAA09.book Page 3 Wednesday, July 6, 2005 4:33 PM

CONTENTS

ABOUT THIS GUIDE

Before You Start 7

Release Notes 7

About Your CD-ROM 8
Conventions 8
Related Documentation 9

Accessing Online Documentation 10
Documentation Comments 10

1 INTRODUCING THE

S

UPERSTACK 3 SWITCH 4400

About the Switch 4400 14

Summary of Hardware Features 14
Switch 4400 — Front View Detail 15

10BASE-T/ 100BASE-TX Ports 16

100BASE-FX Ports 16

LEDs 17
Switch 4400 — Rear View Detail 19

Power Socket 19

Redundant Power System Socket 19

Console Port 19

Expansion Module Slots 19
Default Settings 20

2 INSTALLING THE SWITCH

Package Contents 24
Choosing a Suitable Site 24
Rack-mounting 25
Placing Units On Top of Each Other 27
Stacking Units 27

How To Stack Units 27

DUA1720-3AAA09.book Page 4 Wednesday, July 6, 2005 4:33 PM

Rules For Stacking Units 28

The Power-up Sequence 30

Powering-up the Switch 4400 30
Checking for Correct Operation of LEDs 30
Connecting a Redundant Power System 30
Using Power over Ethernet 31
Choosing the Correct Cables (Switch 4400, 4400 SE and

4400 PWR) 31
Choosing the Correct Cables (Switch 4400 FX) 32

3 SETTING UP FOR MANAGEMENT

Setting Up Overview 34

IP Configuration 35
Preparing for Management 36

Manually Configuring IP Information 37

Connecting to a Front Panel Port 37
Connecting to the Console Port 40

Viewing Automatically Configured IP Information 44

Using 3Com Network Director 44
Connecting to the Console Port 44

Methods of Managing a Switch 47

Command Line Interface Management 47
Command Line Interface Management using SSH 48
Web Interface Management 48
SNMP Management 48

Setting Up Command Line Interface Management 49

CLI Management via the Console Port 49

CLI Management over the Network 49
Setting Up Command Line Interface Management using SSH 50
Setting Up Web Interface Management 51

Pre-requisites 51

Web Management Over the Network 52
Setting Up SNMP Management 52

Pre-requisites 53

Setting Up SNMP 53
Default Users and Passwords 54

Changing Default Passwords 55

DUA1720-3AAA09.book Page 5 Wednesday, July 6, 2005 4:33 PM

4 PROBLEM SOLVING

Solving Problems Indicated by LEDs 58
Solving Hardware Problems 59
Solving Communication Problems 61
Solving Software Upgrade Problems 63

A SAFETY INFORMATION

Power Cord Set — Japan 66
Important Safety Information 66
L’information de Sécurité Importante 68
Wichtige Sicherheitsinformationen 70
Información de seguridad importante 72
Importanti Informazioni di Sicurezza 75
Ważne informacje o zabezpieczeniach 77

B PIN-OUTS

Null Modem Cable 81
PC-AT Serial Cable 81
Modem Cable 82
RJ-45 Pin Assignments 82

C TECHNICAL SPECIFICATIONS

Switch 4400 (24-port) and Switch 4400 SE 85
Switch 4400 PWR (24-port) 87
Switch 4400 (48-port) 89
Switch 4400 FX 91

D OBTAINING SUPPORT FOR YOUR PRODUCT

Register Your Product 93
Purchase Value-Added Services 93
Troubleshoot Online 94
Access Software Downloads 94
Telephone Technical Support and Repair 94
Contact Us 95

DUA1720-3AAA09.book Page 6 Wednesday, July 6, 2005 4:33 PM

INDEX

REGULATORY NOTICES

DUA1720-3AAA09.book Page 7 Wednesday, July 6, 2005 4:33 PM

ABOUT THIS GUIDE

This guide provides all the information you need to install and use the
following switches in their default state:

■ SuperStack

■ SuperStack

■ SuperStack

■ SuperStack

■ SuperStack

®

3 Switch 4400 (3C17203)

®

3 Switch 4400 (3C17204)

®

3 Switch 4400 PWR (3C17205)

®

3 Switch 4400 SE (3C17206)

®

3 Switch 4400 FX (3C17210)

All procedures described in this guide apply to all models except where
stated.

The 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).

Before You Start This section contains information about the documents and CD-ROM

that accompany your Switch 4400.

Release Notes The Release Notes provide important information about the current

software release, including new features, modifications, and known
problems. You should read the Release Notes before installing the Switch
in your network.

If the information in the Release Notes differ from the information in this
guide, follow the instructions in the Release Notes.

DUA1720-3AAA09.book Page 8 Wednesday, July 6, 2005 4:33 PM

8 ABOUT THIS GUIDE

About Your CD-ROM The CD-ROM contains the following:

■ Online documentation for the Switch 4400 — refer to Related

Documentation on page 9 for details.

■ A number of other useful applications.

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

http://www.3com.com/

Conventions Tab l e 1 and Ta bl e 2 list conventions that are used throughout this guide.

Tab le 1 Notice Icons

Icon Notice Type Description

Information note Information that describes important features or

instructions

Caution Information that alerts you to potential loss of data or

potential damage to an application, system, or device

Warning Information that alerts you to potential personal injury

Tab le 2 Text Conventions

Convention Description

Screen displays This typeface represents information as it appears on the

screen.

Syntax The word “syntax” means that you must evaluate the syntax

provided and then supply the appropriate values for the
placeholders that appear in angle brackets. Example:

To change your password, use the following syntax:

system password <password>

In this example, you must supply a password for <password>.

Commands The word “command” means that you must enter the

command exactly as shown and then press Return or Enter.
Commands appear in bold. Example:

To display port information, enter the following command:

bridge port detail

The words “enter”
and “type”

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.”

DUA1720-3AAA09.book Page 9 Wednesday, July 6, 2005 4:33 PM

Tab le 2 Text Conventions (continued)

Convention Description

Keyboard key names If you must press two or more keys simultaneously, the key

Words in italics Italics are used to:

Related Documentation 9

names are linked with a plus sign (+). Example:

Press Ctrl+Alt+Del

■ Emphasize a point.

■ Denote a new term at the place where it is defined in the

text.

■ Identify menu names, menu commands, and software

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

Related
Documentation

In addition to this guide, each Switch documentation set includes the
following:

■ SuperStack 3 Switch Implementation Guide

This guide contains information on the features supported by your
Switch and how they can be used to optimize your network. It is
supplied in PDF format on the CD-ROM that accompanies the Switch.

■ SuperStack 3 Switch Management Quick Reference Guide

This guide contains:

■ a list of the features supported by the Switch.

■ a summary of the web interface and command line interface

commands for the Switch.

It is supplied in PDF format on the CD-ROM that accompanies the
Switch.

■ SuperStack 3 Switch Management Interface Reference Guide

This guide provides detailed information about the web interface and
command line interface that enable you to manage the Switch. It is
supplied in HTML format on the CD-ROM that accompanies the
Switch.

DUA1720-3AAA09.book Page 10 Wednesday, July 6, 2005 4:33 PM

10 ABOUT THIS GUIDE

■ Release Notes

These notes provide information about the current software release,

including new features, modifications, and known problems. The

Release Notes are supplied in PDF format on the CD-ROM that

accompanies the Switch.

The latest release notes are available in Adobe Acrobat Reader

Portable Document Format (PDF) on the 3Com World Wide Web site:

http://www.3com.com/

There are other publications you may find useful, such as:

■ Documentation accompanying the Advanced Redundant Power

system.

Accessing Online

Documentation

■ Documentation accompanying the Expansion Modules.

To access the documentation on the CD-ROM supplied with your Switch,
do the following:

1 Insert the CD-ROM into your CD-ROM drive. If your PC has auto-run

enabled, a splash screen will be displayed automatically.

2 Select the Documentation section from the contents page.

If the online documentation is to be accessed from a local drive or server,
you will need to access the CD-ROM contents via the root directory and
copy the files from the CD-ROM to a suitable directory.

■ The HTML Reference Guide is stored in the Docs/reference

directory on the CD-ROM. The documentation is accessed using the

contents.htm file.

■ The PDF Implementation Guide is stored in the

Docs/implementation directory of the CD-ROM.

3Com recommends that you copy the Docs/reference directory as a
whole to maintain the structure of the files.

Documentation
Comments

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

[e-mail]

DUA1720-3AAA09.book Page 11 Wednesday, July 6, 2005 4:33 PM

Please include the following information when commenting:

■ Document title

■ Document part number (on the title page)

■ Page number (if appropriate)

Example:

Part Number DUA1720-3AAA09
SuperStack 3 Switch 4400 Family Getting Started Guide

Page 21

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.

Documentation Comments 11

DUA1720-3AAA09.book Page 12 Wednesday, July 6, 2005 4:33 PM

12 ABOUT THIS GUIDE

DUA1720-3AAA09.book Page 13 Wednesday, July 6, 2005 4:33 PM

INTRODUCING THE

1

SUPERSTACK 3 SWITCH 4400

This chapter contains introductory information about the Switch 4400
and how it can be used in your network. It covers summaries of hardware
and software features and also the following topics:

■ About the Switch 4400

■ Switch 4400 — Front View Detail

■ Switch 4400 — Rear View Detail

■ Default Settings

DUA1720-3AAA09.book Page 14 Wednesday, July 6, 2005 4:33 PM

14 CHAPTER 1: INTRODUCING THE SUPERSTACK 3 SWITCH 4400

About the Switch
4400

Summary of

Hardware Features

The Switch 4400 is a stackable 10/100 Mbps Ethernet switch and
provides high-performance workgroups with a backbone to server
connection. The Switch 4400 allows Cascade, Gigabit Ethernet or Fast
Ethernet Fiber connections when expansion modules are installed in the
expansion slots on the rear of the unit. You can also add the Switch 4400

®

to any SuperStack

system as your network grows.

The Switch 4400 PWR (3C17205) supports Power over Ethernet on all
front panel ports. If you plug in a compatible (IEEE 802.3af compliant)
device, it will be automatically detected and power supplied to it. Power
over Ethernet is enabled on each port by default.

The Switch 4400 FX (3C17210) has 24 100BASE-FX MT-RJ ports. These
allow easy connection of 100 Mbps fiber-optic links.

Tab l e 3

summarizes the hardware features that are supported by the

Switch 4400.

Tab le 3 Hardware features

Feature Switch 4400

Addresses ■ Up to 8000 supported

■ Up to 64 permanent entries

Auto-negotiation ■ Supported on all ports

■ Auto MDI/MDI-X (not 3C17210)

Forwarding Modes Store and Forward

Duplex Modes Half and full duplex on all front panel ports

Smart Auto-sensing Supported on all ports

Traffic Prioritization Supported (using the IEEE Std 802.ID, 1998 Edition):

4 queues per port

Power over Ethernet Supported on all front panel ports (3C17205 only).

Ethernet and Fast Ethernet
Ports

RPS Support Connects to SuperStack 3 Advanced Redundant

Mounting 19-inch rack or stand-alone mounting

Stacking All Switch units in the stack can be managed as a

Auto-negotiating 10BASE-T/100BASE-TX ports or
100BASE-FX ports (3C17210)

Power System (ARPS) (3C16071B)

single entity with one IP address

DUA1720-3AAA09.book Page 15 Wednesday, July 6, 2005 4:33 PM

Switch 4400 — Front View Detail 15

Switch 4400 —
Front View Detail

Port LEDs
(Packet and Status)

S

P

1

S

P

13

S

P

3

S

2

P

P

S

15 16

P

P

14

5

S

4

P

S

P

P

S

P

S

P

17

S

Figure 1 Switch 4400 FX — front view

Figure 2 Switch 4400 (24-port) / Switch 4400 SE — front view

Power / Self Test LED

S

6

S

18

8

9

S

PPP

S

P

7

S

P

SSS

20

P

19

21

P

P

S

11 12

PPP

10

SSS

23

P

SSS

22

Status Green =- 100Mbps

S

Packet -

24

Green =

Full Duplex

Yellow =10Mbps

Yellow=

3

1

4

2

7

8

5

6

Unit

P

P

Half Duplex

Module 1

S

S

Module 2

on = enabled, link OK

Power/Self test

flashing = disabled

3C17203 SuperStack 3

Switch 4400

4

3

5

6

7

8

©

10BASE-T / 100BASE-TX

RJ-45 Ports

Unit LEDs

Module LEDs
(Packet and Status)

Figure 3 Switch 4400 PWR — front view

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16 CHAPTER 1: INTRODUCING THE SUPERSTACK 3 SWITCH 4400

Figure 4 Switch 4400 (48-port) — front view

10BASE-T/

100BASE-TX Ports

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

Either shielded or unshielded data cables with shielded or unshielded
jacks can be connected to these data sockets.

The Switch 4400, 4400 SE and 4400 PWR have 24 or 48
auto-negotiating 10BASE-T/100BASE-TX ports configured as Auto MDIX
(cross-over). These ports automatically provide the appropriate
connection. Alternatively, you can manually set these ports to 10BASE-T
half duplex, 10BASE-T full duplex, 100BASE-TX half duplex or
100BASE-TX full duplex. The maximum segment length is 100 m (328 ft)
over Category 5 twisted pair cable.

The 4400 PWR will supply up to 15.4W of power through any of the 24
front panel ports in conformance to the 802.3af specification. The Switch
4400 PWR incorporates a LED Mode Button on the front panel, which
when pressed changes the mode of the front panel port LEDs
functionality between Switch and Power mode.

100BASE-FX Ports The Switch 4400 FX has 24 100BASE-FX MT-RJ ports. These are

100 Mbps fiber-optic ports that can use standard multi-mode fiber-optic
cable of up to 2 kilometers (1.2 miles). They use the standard MT-RJ

DUA1720-3AAA09.book Page 17 Wednesday, July 6, 2005 4:33 PM

connector that allows both the transmit and the receive fibers to be
connected in the same space as an RJ-45 port.

LEDs Ta bl e 4 lists LEDs visible on the front of the Switch, and how to read their

status according to color. For information on using the LEDs for problem
solving, see “Solving Problems Indicated by LEDs”

Tab le 4 LED behavior

LED Color Indicates

Power/Self Test LED

Green The Switch is powered-up and operating normally.

Green flashing The Switch is either downloading software or is initializing

Yellow The Switch has failed its Power On Self Test

Off The Switch is not receiving power or there is a fault with the

Port LEDs

Packet Green Full duplex packets are being transmitted/received on the

Yellow Half duplex packets are being transmitted/received on the

Off No packets are being transmitted/received on the port.

Status Green A high speed (100 Mbps) link is present, and the port is

Green flashing A high speed (100 Mbps) link is present, but the port is

Yellow A low speed (10 Mbps) link is present, and the port is

Yellow flashing A low speed (10 Mbps) link is present, but the port is

Yellow flashing
(fast)

Off No link is present.

Switch 4400 — Front View Detail 17

on page 58.

(which includes running a Power On Self Test).

or

A port has failed and has been automatically disabled. You
can verify this by checking that the Port Status LED is quickly
flashing Yellow. If a port fails the Switch passes its Power On
Self Test and continues to operate normally.

Power Supply Unit.

port.

port.

enabled.

disabled.

enabled (not 4400 FX).

disabled (not 4400 FX).

The port has failed and has been automatically disabled. The
Switch passes its Power On Self Test and continues to
operate normally even if one or more ports are disabled.

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18 CHAPTER 1: INTRODUCING THE SUPERSTACK 3 SWITCH 4400

LED Color Indicates

Port LEDs — Power over Ethernet mode (3C17205 only)

Packet Green Power is being delivered to the port.

Green flashing Exceeded port power limit (overCurrent MIB state) or unable

Yellow Power over Ethernet error, no power supplied on port.

Off No power is being delivered.

Status Yellow flashing Power over Ethernet POST error on port. Flash rate is 4 Hz

Module LEDs

Packet Refer to the user documentation accompanying the module,

Status Refer to the user documentation accompanying the module,

Off There is no module installed in the expansion module slot.

Yellow flashing
(fast)

Unit LEDs

1–8 Green When the Switch forms a stack with other Switch 4400

Green/Yellow
rotational

Green
flashing

Off A fault has occurred.

Port LED Status LED (3C17205 only)

Green Port LEDs are operating in power mode

Yellow flashing Port LEDs are operating in normal mode. One or more ports

Off Port LEDs are operating in normal mode.

Power Utilization LEDs (3C17205 only)

Green 4 LEDs showing total power being delivered as a percentage

to supply power due to unit over budget (denyLowPriority
MIB state).

if installed.

if installed.

The module has failed and has been automatically disabled.
The Switch passes its Power On Self Test and continues to
operate normally even if one or more modules are disabled.

units, the LED indicates the position of the unit in the stack
and that a link is present.

When the Switch is stand-alone and not part of a stack, LED
1 is on.

When a software upgrade is in progress, the LEDs of the unit
that is being upgraded ‘rotate’ in an clockwise and
anti-clockwise sequence.

The Switch physically forms a stack with other Switch 4400
units, but cannot be managed as part of that stack until all
units have been upgraded to software version 2.0 or later.

has a Power over Ethernet error.

of maximum possible.

DUA1720-3AAA09.book Page 19 Wednesday, July 6, 2005 4:33 PM

Switch 4400 — Rear View Detail 19

Switch 4400 — Rear
View Detail

Power Socket The Switch automatically adjusts its power setting to any supply voltage

Redundant Power

System Socket

Figure 5 Switch 4400 (all models) — rear view

in the range 90-240 VAC.

To protect against internal power supply failure, you can use this socket
to connect a Switch 4400 to a SuperStack 3 Advanced Redundant Power
System (RPS). See “Connecting a Redundant Power System”

on page 30.

Console Port The console port allows you to connect a terminal and perform remote or

Expansion Module

Slots

local out-of-band management. The console port uses a standard null
modem cable and is set to auto-baud, 8 data bits, no parity and 1 stop
bit.

You can use these slots to install Expansion Modules. These allow the
Switch to support various forms of connection and add extra functionality
to your Switch. For example you can install a Cascade module to enable
the Switch to be stacked with other Switches. Please note that Power
over Ethernet is not supported on expansion modules on the Switch 4400
PWR (3C17205). Contact your supplier for more information.

WARNING: When an Expansion Module is not installed, ensure the
blanking plate is fitted by tightening all screws with a suitable tool.

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20 CHAPTER 1: INTRODUCING THE SUPERSTACK 3 SWITCH 4400

Default Settings Tab l e 5 shows the default settings for the Switch 4400:

Tab le 5 Default Settings

Feature Switch 4400

Automatic IP Configuration Enabled

Port Status Enabled

Port Speed 10/100 Mbps ports are auto-negotiated

MT-RJ ports (3C17210) are fixed at 100 Mbps

Duplex Mode All fixed 10BASE-T and 100BASE-TX ports are

auto-negotiated

100BASE-FX ports default to full-duplex mode
(100 FD) and must be manually set to half-duplex
mode (100 HD) if required.

Power over Ethernet Enabled (3C17205 only)

Flow Control Disabled

Broadcast Storm Control Enabled

Virtual LANs (VLANs) All ports belong to the untagged Default VLAN

(VLAN 1) with IEEE Std 802.1Q-1998 learning
operational

Management VLAN VLAN 1

Tru s ted IP ■ Trusted IP Mode: Disabled

■ Trusted IP Trap: Enabled

■ Max Trusted IP Hosts: 16

Link Aggregation Control
Protocol (LACP)

IP Multicast Filtering ■ Filtering enabled.

Rapid Spanning Tree Protocol Enabled

Fast Start ■ Auto on front panel ports

RMON Alarm Enabled

Smart Auto-Sensing Enabled

Webcache Support Disabled

Traffic Prioritization All ports prioritize NBX VoIP traffic (LAN and IP).

Port Security Disabled per port

Disabled per port

■ Querying disabled.

■ Disabled on rear panel port

All ports set to “best effort” for all other traffic.

DUA1720-3AAA09.book Page 21 Wednesday, July 6, 2005 4:33 PM

Feature Switch 4400

Simple Network Time
Protocol (SNTP)

SSH v2 Enabled for all security levels

Syslog Disabled

RADA Disabled

SNMP v1 and v2c Enabled

SNMP v3 Enabled

Default Settings 21

Disabled

■ The switch will generate a unique host key

when it is first powered up

■ Client Authentication set to

Username/Password

■ Null public keys for each default users

■ Default host key length 1024

■ Public key ftp sever IP address 0.0.0.0, NULL

filename

■ Cipher: DES

■ Re-authentication time 1800 (30 minutes).

■ Hold-off (re-try) timer 60 (1 minute)

■ Secondary mode (of authentication) disabled

■ User: admin,

Level: noAuthNoPriv (i.e. no keys)

■ User: monitor and manager:

Level: authNoPriv, no default keys set

Local Authentication Disabled

To make Advanced Traffic Prioritization, RADIUS Based Auto QoS
Assignment, and Traffic Shaping available on the SuperStack 3 Switch
4400 SE, upgrade the product to the Switch 4400 SE Enhanced Software
Upgrade (3C17207).

If you initialize a Switch unit by selecting System > Control > Initialize in
the Web interface or by entering system control initialize

in

the Command Line Interface, the following settings are retained to allow
you to connect to and manage the Switch:

■ IP Address

■ Subnet Mask

■ Default Router

DUA1720-3AAA09.book Page 22 Wednesday, July 6, 2005 4:33 PM

22 CHAPTER 1: INTRODUCING THE SUPERSTACK 3 SWITCH 4400

DUA1720-3AAA09.book Page 23 Wednesday, July 6, 2005 4:33 PM

INSTALLING THE SWITCH

2

This chapter contains the information you need to install and set up the
Switch 4400. It covers the following topics:

■ Package Contents

■ Choosing a Suitable Site

■ Rack-mounting

■ Placing Units On Top of Each Other

■ Stacking Units

■ The Power-up Sequence

WARNING: Safety Information. Before installing or removing any
components from the Switch 4400 or carrying out any maintenance
procedures, you must read the safety information provided in Appendix A
of this guide.

AVERTISSEMENT: Consignes de sécurité. Avant d'installer ou d'enlever
tout composant du Switch 4400 ou d'entamer une procédure de
maintenance, lisez les informations relatives à la sécurité qui se trouvent
dans l'Appendice A de ce guide.

VORSICHT: Sicherheitsinformationen. Bevor Sie Komponenten aus
dem Switch 4400 entfernen oder dem Switch 4400 hinzufuegen oder
Instandhaltungsarbeiten verrichten, lesen Sie die Sicherheitsanweisungen,
die in Appendix A (Anhang A) in diesem Handbuch aufgefuehrt sind.

AVVERTENZA: Informazioni di sicurezza. Prima di installare o
rimuovere qualsiasi componente dal Switch 4400 o di eseguire qualsiasi
procedura di manutenzione, leggere le informazioni di sicurezza riportate
nell'Appendice A della presente guida per l'utente.

OSTRZEŻENIE: Informacje o zabezpieczeniach. Przed instalacją lub
usunięciem jakichkolwiek elementów z product lub przeprowadzeniem
prac konserwacyjnych należy zapoznać się z informacjami o
bezpieczeństwie zawartymi w Załączniku A niniejszego podręcznika.

DUA1720-3AAA09.book Page 24 Wednesday, July 6, 2005 4:33 PM

24 CHAPTER 2: INSTALLING THE SWITCH

Package Contents ■ Switch unit

■ CD-ROM (includes documentation related to your Switch)

■ Getting Started Guide (this guide)

■ Management Quick Reference Guide

■ Release Notes

■ Unit Information Labels

■ Warranty Information

■ Power Cord

■ 2 x Mounting brackets

Choosing a Suitable
Site

■ 4 x Screws

■ 4 x Rubber feet

The Switch is suited for use on a desktop, either free standing or
mounted in a standard 19-inch equipment rack. Alternatively, the Switch
can be mounted in a wiring closet or equipment room, as an aggregator
for other Hubs and Switches. A rack-mounting kit containing two
mounting brackets is supplied with the Switch.

CAUTION: Ensure that the ventilation holes are not obstructed.

When deciding where to position the Switch, ensure that:

■ Cabling is located away from:

■ sources of electrical noise such as radios, transmitters and

broadband amplifiers.

■ power lines and fluorescent lighting fixtures

■ The Switch is accessible and cables can be connected easily.

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

■ Air flow is not restricted around the Switch or through the vents in the

side of the Switch. 3Com recommends that you provide a minimum of

25mm (1in.) clearance.

■ Air temperature around the Switch does not exceed 40 °C (104 °F).

If the Switch is installed in a 19-inch rack or closed assembly its local air
temperature may be greater than room ambient temperature.

DUA1720-3AAA09.book Page 25 Wednesday, July 6, 2005 4:33 PM

■ The air is as free from dust as possible.

■ The unit is installed in a clean, air conditioned environment.

■ No more than eight Switch units are placed on top of one another, if

the units are free-standing.

■ The Switch is situated away from sources of conductive (electrical)

dust, for example laser printers.

■ The AC supply used by the Switch is separate to that used by units

that generate high levels of AC noise, for example air conditioning
units and laser printers.

Rack-mounting 25

Rack-mounting The Switch 4400 is 1U high and will fit in most standard 19-inch racks.

CAUTION: Disconnect all cables from the Switch before continuing.
Remove all self adhesive pads from the underside of the Switch if they
have been fitted.

To rack-mount your Switch:

1 Place the Switch 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

Switch, as shown in Figure 6

.

DUA1720-3AAA09.book Page 26 Wednesday, July 6, 2005 4:33 PM

26 CHAPTER 2: INSTALLING THE SWITCH

Figure 6 Fitting a bracket for rack-mounting

3 Insert the two screws and tighten with a suitable screwdriver.

You must use the screws supplied with the mounting brackets. Damage
caused to the unit by using incorrect screws invalidates your warranty.

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

5 Insert the Switch into the 19-inch rack and secure with suitable screws

(not provided). Ensure that ventilation holes are not obstructed.

6 Connect network cabling.

7 Finally place a unit information label on the unit in an easily accessible

position. The unit information label shows the following:

■ The 3Com product name of the Switch

■ The 3Com 3C number of the Switch

■ The unique MAC address (Ethernet address) of the Switch

■ The serial number of the Switch

You may need this information for fault reporting purposes.

DUA1720-3AAA09.book Page 27 Wednesday, July 6, 2005 4:33 PM

Placing Units On Top of Each Other 27

Placing Units On
Top of Each Other

If the Switch units are free-standing, up to eight units can be placed one

®

on top of the other. If you are mixing a variety of SuperStack

3 Switch

and Hub units, the smaller units must be positioned at the top.

If you are placing Switch units one on top of the other, you must use the
self-adhesive rubber pads supplied. Apply the pads to the underside of
each Switch, sticking one in the marked area at each corner. Place the
Switch units on top of each other, ensuring that the pads of the upper
unit line up with the recesses of the lower unit.

Stacking Units Switch 4400 units can be stacked together and then treated as a single

manageable unit with one IP address. Any combination of 24-port and
48-port units is allowed in a single stack.

The SuperStack 3 Switch 4400 SE can only be stacked with non-SE
Switches if it has been upgraded using the Switch 4400 SE Enhanced
Software Upgrade (3C17207). An upgraded Switch 4400 SE cannot be
stacked with a normal Switch 4400 SE.

How To Stack Units To stack two Switch 4400 units you will need to order the SuperStack 3

Switch Cascade Stacking Kit (3C17227). The kit consists of two Cascade
Modules and a Cascade Cable. Both Switches must have an unused
expansion slot to allow a Cascade Module to be fitted.

Figure 7 Stacking two Switch 4400 units

To stack more than two Switch units you will need to order one
SuperStack 3 Cascade Extender Kit (3C17228) for each additional unit.
This Kit consists of one Cascade Module, one Cascade Cable and one

M

odule 2

3C17224

U

P

SuperStack 3 Cascade Module

M

odule 2

3C17224

DOW

N

SuperStack 3 Cascade Module

Switch 2

Switch 1

DUA1720-3AAA09.book Page 28 Wednesday, July 6, 2005 4:33 PM

28 CHAPTER 2: INSTALLING THE SWITCH

Cascade Extender Unit. The Cascade Module is installed into the
expansion slot at the rear of the Switch and the Cascade Extender Unit
plugs into the Cascade Module.

Figure 8 Stacking more than two Switch 4400 units

M

odule 2

3C17224

U

P

SuperStack 3 Cascade Module

Switch 4

M

odule 2

3C17224

3

3C17224

C

1

7

22

U

4

P

SuperStack 3 Cascade Module

UP

3C17224

3

C

1

7

UP

3C17224

SuperStack 3 Cascade Module

D

O

W

N

M

odule 2

2

UP

2

4

SuperStack 3 Cascade Module

DO

W

N

M

odule 2

DOW

N

SuperStack 3 Cascade Module

Switch 3

Switch 2

Switch 1

Rules For Stacking

Units

For information on ordering the Cascade Kits contact your supplier. For
illustrations and information on how to install the Cascade Kits, refer to
the user documentation that accompanies these Kits.

This information is also provided in the user documentation that
accompanies the Cascade Kits.

■ The maximum number of Switch units in a stack is limited to 8. The

stack may contain a combination of 24 and 48 port units.

■ Only one Cascade Module can be installed per Switch. If Cascade

Modules are fitted to both expansion slots in a Switch then both

Modules will be disabled.

■ Cascade Modules are NOT hot-swappable or hot-insertable. Ensure

that the Switch is powered off before inserting or removing a Cascade

Module.

DUA1720-3AAA09.book Page 29 Wednesday, July 6, 2005 4:33 PM

■ The Cascade Extender Unit is hot-insertable. This allows its host

Switch unit to be removed and replaced without disturbing the rest of
the stack.

■ Only 3Com

Cascade Modules/Cascade Extender Units.

■ Due to the length of the Cascade Cables, you must insert all of the

Cascade Modules into Expansion Module Slot 1 or all of the Cascade
Modules into Expansion Module Slot 2 on the Switches.

■ It is not possible to stack a Switch 4400, Switch 4400 SE,

Switch 4400 PWR or Switch 4400 FX unit with SuperStack II or other
SuperStack 3 products using the Cascade Stacking Kit (3C17227) or
Cascade Extender Kit (3C17228).

Stacking Units 29

®

Cascade Cables can be used to connect between

■ 3Com strongly recommends that you upgrade all Switch 4400 units

(24-port and 48-port) in a stack to the latest software agent.

■ 3Com recommends that you initialize a Switch 4400, Switch 4400 SE,

Switch 4400 PWR or Switch 4400 FX unit that has previously been
used elsewhere in your network before you add it to an existing stack.
If you do not initialize the unit, problems may be caused by conflicting
Switch configurations.

■ When the Switch 4400s are stacked together they are assigned a unit

number from bottom-to-top for management purposes. When further
Switches are added to the stack, they can be positioned at the bottom
of the stack or at the top. Either way, the Switch management
software will re-order the Switch unit numbers into a logical order
again (from bottom to top).

DUA1720-3AAA09.book Page 30 Wednesday, July 6, 2005 4:33 PM

30 CHAPTER 2: INSTALLING THE SWITCH

The Power-up
Sequence

Powering-up the

Switch 4400

Checking for Correct

Operation of LEDs

The following sections describe how to get your Switch 4400
powered-up and ready for operation.

Use the following sequence of steps to power-up the Switch.

1 Plug the power cord into the power socket at the rear of the Switch.

2 Plug the other end of the power cord into your power outlet.

The Switch powers-up and runs through its Power On Self Test (POST),
which takes approximately 10 seconds.

During the Power On Self Test, all ports on the Switch are disabled and
the LEDs light in a set sequence.

When the POST has completed, check the Power/Self Test LED to make
sure that your Switch is operating correctly. Ta bl e 6

shows possible colors

for the LED.

Tab le 6 Power/Self Test LED colors

Color State

Green The Switch is powered-up and operating normally.

Yellow The Switch has failed its Power On Self Test.

Off The Switch is not receiving power.

Connecting a

Redundant Power

System

If there is evidence of a problem, see “Solving Problems Indicated by
LEDs” on page 58.

You can connect a SuperStack 3 Advanced Redundant Power System
(3C16071B) to the Switch. This unit, which is also known as an RPS, is
designed to maintain the power to your Switch if a power supply failure
occurs.

For normal redundancy, the Switch 4400, Switch 4400 SE, and
Switch 4400 FX require one Type 2A Power Module (3C16074A). For full
redundancy, the Switch 4400, Switch 4400 SE, and Switch 4400 FX
require two type 2A Power Modules combined using a Type 2 Y-Cable.
The Switch 4400 PWR (3C17205) requires one Type 3 Power Module
(3C16075) for normal redundancy and two Type 3 Power Modules for full
redundancy.