3Com 4060, 4050 User Manual

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3Com® Switch 4050 and 4060

Getting Started Guide

3C17708, 3C17709

http://www.3com.com/

Part No. DUA1770-9AAA03

Published September 2002

3Com Corporation 5400 Bayfront Plaza Santa Clara, California 95052-8145

Copyright © 2002, 3Com Technologies. 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 Technologies.

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

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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.

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CONTENTS

ABOUT THIS GUIDE

Conventions 8

ABOUT THIS GUIDE

This guide provides all the information you need to install and use a 3Com® Switch 4050 and 4060 in its default state.

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).

Please refer to the CD-ROM that accompanies your Switch for the following:

■Management Interface Reference Guide — an online guide which gives you detailed information on how to use the web interface and command line interface to manage the Switch.

■3Com Network Supervisor — a powerful network management tool for small to medium enterprise networks.

■A number of other useful applications.

■Other documentation relating to the Switch 4050 and 4060.

If the information in the release notes that are shipped with your product differ from the information in this guide, follow the instructions in the release notes.

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

http://www.3com.com/

8 ABOUT THIS GUIDE

Conventions	Table 1 and Table 2 list conventions that are used throughout this guide.
	Table 1	Notice Icons

	Icon	Notice Type	Description

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

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

Keyboard key names	If you must press two or more keys simultaneously, the key
	names are linked with a plus sign (+). Example:
	Press Ctrl+Alt+Del

Words in italics	Italics are used to:
	■ Emphasize a point.
	■ Denote a new term at the place where it is defined in the
	text.
	■ Identify menu names, menu commands, and software
	button names. Examples:
	From the Help menu, select Contents.
	Click OK.

Related Documentation

Related	In addition to this guide, each Switch documentation set includes the
Documentation	following:
	■ Management Quick Reference Guide
		This guide contains:
		■ a list of software features supported by each Switch.
		■ a summary of the web interface and command line interface
		commands for the Switch.
	■	Release Notes
		These notes provide information about the current software release,
		including new features, modifications, and known problems.
	■	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.

■ 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.

There are other publications you may find useful:

■ Documentation accompanying the Expansion Modules.

■ Documentation accompanying 3Com Network Supervisor. This is supplied on the CD-ROM that accompanies the Switch.

Accessing Online The CD-ROM supplied with your Switch contains the following online Documentation documentation:

■Switch Implementation Guide (PDF format).

■Switch Management Interface Reference Guide (HTML format).

■Other documentation relating to the Switch 4050 and 4060 (PDF format).

10 ABOUT THIS GUIDE

To access the online documentation from the CD-ROM:

1Insert the CD-ROM into the relevant CD-ROM drive. If your PC has auto-run enabled, a splash screen will be displayed automatically.

2Select 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/referenceguide on the CD-ROM. The documentation is accessed using the index.htm file.

■The PDF Implementation Guide is stored in the Docs/implementation directory of the CD-ROM.

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

Product	You can register your Switch on the 3Com Web site to receive up-to-date
Registration	information on your product:
	http://support.3com.com/registration/frontpg.pl

Documentation	Your suggestions are very important to us. They will help make our
Comments	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 commenting:
	■ Document title
	■ Document part number (on the title page)
	■ Page number (if appropriate)
	Example:
	Part Number DUA1770-9AAA0x
	3Com Switch 4050 and 4060 Getting Started Guide
	Page 21

1	INTRODUCING THE
	3COM SWITCH 4050 AND 4060

This chapter contains introductory information about the 3Com® Switch 4050 and 4060 and how it can be used in your network. It covers summary information about the hardware and the following topics:

■About the 3Com Switch 4050 and 4060

■3Com Switch 4050 and 4060 — Front View Detail

■3Com Switch 4050 and 4060 — Rear View Detail

■Default Settings

12 CHAPTER 1: INTRODUCING THE 3COM SWITCH 4050 AND 4060

About the 3Com	The 3Com Switch 4050 is a mixed media device which consists of:
Switch 4050 and
4060	■	12 10BASE-T/100BASE-TX/1000BASE-T ports
	■	6	1000BASE-SX ports
	■ 6		Gigabit Interface Convertor (GBIC) ports

The 3Com Switch 4060 is a mixed media device which consists of:

■12 1000BASE-SX ports

■6 10BASE-T/100BASE-TX/1000BASE-T ports

■6 Gigabit Interface Convertor (GBIC) ports

You can also interconnect any combination of two Switches from the 3Com Switch 4050/4060 range or the SuperStack® 4900 Series to create an XRN Distributed Fabric. This allows you to create a highly resilient core around which you can build your network. For more information about interconnecting Switches, see “Creating an XRN Distributed Fabric” on page 24. For more information about 3Com XRN Technology and how to use it in your network, refer to the Implementation Guide on the CD-ROM that accompanies the Switch.

For information about using the software features of the Switch, refer to the “Switch Management Interface Reference Guide” on the CD-ROM that accompanies the Switch.

About the 3Com Switch 4050 and 4060 13

Summary of Table 3 summarizes the hardware features that are supported by the Hardware Features 3Com Switch 4050 and 4060.

Table 3 Hardware features

Feature	3Com Switch 4050/4060

Addresses	Up to 12,000 supported
	Up to 64 permanent entries
Forwarding Modes	Store and Forward
Duplex Modes	■ Half duplex only supported on
	10BASE-T/100BASE-TX/1000BASE-T Mbps ports in
	10/100 Mbps mode
	■ All 1000 Mbps ports are full duplex only
Flow Control	Supported on all ports
Smart auto-sensing	■ Supported on all 10BASE-T/100BASE-TX/1000BASE-T
	ports.
	■ Not supported on 1000BASE-SX and GBIC ports.
Traffic Prioritization	Supported (IEEE Std 802.1D, 1998 Edition)
	Four traffic queues per port
Fast Ethernet and	Auto-negotiating 10BASE-T/100BASE-TX/1000BASE-T,
Gigabit Ethernet Ports	1000BASE-SX and GBIC ports
Mounting	19-inch rack or stand-alone mounting
Layer 3 Switching	Support for wire-speed IP routing
Replaceable PSUs	Replaceable PSU and slot for optional second replaceable
	PSU
Hot Swap Fans	Two identical hot swap fan trays are fitted
XRN Support	eXpandable Resilient Networking (XRN) support. Allows
	interconnection of two units to create a Distributed
	Fabric.

14 CHAPTER 1: INTRODUCING THE 3COM SWITCH 4050 AND 4060

3Com Switch 4050		Figure 1 3Com Switch 4050 — front view
and 4060 — Front
View Detail
Unit Status LED	Module		10BASE-T/100BASE-TX/1000BASE-T LEDs
Unit Status LED	Status LEDs		10BASE-T/100BASE-TX/1000BASE-T LEDs
and Layer 3 LED	Status LEDs
and Layer 3 LED	Fan LEDs	Temperature		GBIC Ports		Console Port
PSU LEDs Unit LEDs		Temperature			1000BASE-SX LEDs	Console Port
			LED
			LED

UNIT STATUS

TEMP

P = Packet

Yellow = 10/100Mbps

Green = 1000Mbps

On = enabled, link OK

Flashing = disabled

3Com Switch 4050

LAYER 3

PSU

FANS

UNIT

MODULE

S = Status

10/100/1000

1000SX

P 13

14 15 16 17 18

P 19

S 13

14 15 16 17 18

GBIC 1

GBIC 2

GBIC 3

GBIC 4

GBIC 5

GBIC 6

3C17708

GBIC LEDs

10BASE-T/100BASE-TX/1000BASE-T Ports

1000BASE-SX Ports

Front Fan Tray (behind door)

10BASE-T/100BASE-TX/1000BASE-T Ports

Figure 2 3Com Switch 4060 — front view

Unit Status LED		Module	10BASE-T/100BASE-TX/1000BASE-T LEDs
		Status LEDs
and Layer 3 LED
	Fan LEDs					Console Port
PSU LEDs		Temperature		GBIC Ports	1000BASE-SX LEDs
		Unit LEDs	LED

UNIT STATUS	1						F		1	2		P		TEMP	P = Packet				Yellow = 10/100Mbps			Green = 1000Mbps	On = enabled, link OK	Flashing = disabled						3Com Switch 4060
LAYER 3	2	PSU					R	FANS	3	4	UNIT	S	MODULE		S = Status
LAYER 3
				1000SX													10/100/1000										1000SX
	P	7	8	9	10	11	12								P	13	14	15	16	17	18			P	19	20	21	22	23	24
	S	7	8	9	10	11	12								S	13	14	15	16	17	18			S	19	20	21	22	23	24
GBIC 1									GBIC 2					GBIC 3								GBIC 4		GBIC 5						GBIC 6
P					P									P					P					P				P
S					S									S					S					S				S
																														3C17709

GBIC LEDs

1000BASE-SX Ports 10BASE-T/100BASE-TX/1000BASE-T Ports

1000BASE-SX Ports

Front Fan Tray (behind door)

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.

3Com Switch 4050 and 4060 — Front View Detail 15

1000BASE-SX Ports The auto-negotiating 1000BASE-SX ports have MT-RJ connectors.

The default state for these ports is auto-negotiation enabled, where the speed, duplex and flow control modes are negotiated. As the speed and duplex modes are fixed by the media type, only the flow control is negotiated with the link partner. Alternatively, auto-negotiation can be disabled and the flow control setting can be manually configured.

10BASE-T/ The 10BASE-T/100BASE-TX/1000BASE-T ports have RJ-45 connectors and 100BASE-TX/ are configured as Auto MDIX (cross-over).

1000BASE-T Ports

The default state for these ports is auto-negotiation enabled, where the speed, duplex and flow control modes of a link are automatically detected to provide the highest available bandwidth with the link partner.

Alternatively, auto-negotiation can be disabled. These ports can be manually configured to 10 Mbps half duplex, 100 Mbps half duplex, 10 Mbps full duplex or 100 Mbps full duplex. It is not possible to

manually configure a 1000 Mbps link as auto-negotiation is mandatory in the 1000 Mbps standard. If auto-negotiation is disabled, Auto MDIX cannot function and the ports are fixed as MDIX (cross-over) mode.

If auto-negotiation is disabled on a 1000 Mbps port, the speed will drop to the highest available speed. By default this is 100 Mbps.

GBIC Ports The 6 GBIC ports support fiber Gigabit Ethernet short-wave (SX), long-wave (LX) and long-haul (LH70) GBIC transceivers in any combination. This offers you the flexibility of using GBIC transceivers to provide connectivity between the Switch and remote 1000 Mbps workgroups or to create a high capacity aggregated link backbone connection.

Console Port The console port allows you to connect a terminal and perform remote or local out-of-band management. The console port uses a standard null modem cable and is set to autobaud (up to a maximum of 19,200 baud), 8 data bits, no parity and 1 stop bit.

16 CHAPTER 1: INTRODUCING THE 3COM SWITCH 4050 AND 4060

LEDs Table 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 “Checking for Correct Operation of LEDs” on page 26.

Table 4	LED behavior

LED	Color	Indicates

Port Status LEDs
Packet	Yellow	Packets are being transmitted/received on the port.
	Off	No packets are being transmitted/received on the port.
Status	Green	A high speed (1000 Mbps) link is present, and the port
		is enabled.
	Green flashing	A high speed (1000 Mbps) link is present, but the port
		is disabled.
	Yellow	A low speed (10/100 Mbps) link is present, and the
		port is enabled.
	Yellow flashing	A low speed (10/100 Mbps) link is present, but the port
		is disabled.
	Yellow flashing	Port has failed self-test and has automatically been
	(fast)	disabled.
	Off	No link is present.
Module Status LEDs
	Green	The Module is installed and supported. The Link Status
		has been determined for a single port Module.
	Yellow	The Module is installed and supported. The Module
		has multi-ports or there is no link for a single port
		Module.
	Yellow flashing	The Module is installed but not supported. Note that
		the unit will continue to operate normally.
	Yellow flashing	A port on the Module has failed POST and has been
	(fast)	automatically disabled.
	Off	The Module is not installed.
Unit LEDs
1–4	Green	Determines the identity of the Switch when
		interconnected to another Switch to create a
		Distibuted Fabric.
	Off	A fault has occurred.
Unit Status LED
	Green	The Switch is powered-up and operating normally.

3Com Switch 4050 and 4060 — Front View Detail 17

LED	Color	Indicates

Unit Status LED (cont.)
	Green flashing	The Switch is either downloading software or is
		initializing (which includes running a Power On Self
		Test).
	Yellow	The Switch has failed its Power On Self Test
		or
		A port has failed and had 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.
	Off	The Switch is not receiving power or there is a fault
		with the Power Supply unit.
Layer 3 LED
	Green	The Switch software supports Layer 3.
	Off	The Switch software does not support Layer 3.

PSU LEDs (Front of Switch)*

Green	PSU fitted and enabled
Red	PSU fitted and not operational
Red flashing	PSU has shut down due to over-heating
Off	No PSU fitted
PSU LED (PSU Module)
Green	The PSU module is installed and is supplying DC power
	to the Switch.
Off	The PSU module is not supplying power and may have
	shut down due to a fault.
Fans (F = Front)
Red	One or both fans have failed
Red flashing	Fan Tray has been removed
Off	Fan Tray fitted and enabled.
Fans (R = Rear)
Red	One or both fans have failed
Red flashing	Fan Tray has been removed
Off	Fan Tray fitted and enabled.

18 CHAPTER 1: INTRODUCING THE 3COM SWITCH 4050 AND 4060

LED	Color	Indicates

Temperature
	Red flashing	The Switch and/or the PSUs are above critical
		temperature and may shut down.
	Off	The Switch and the PSUs are below critical
		temperature.

* The PSU LEDs are visible on the front of the Switch and are marked ‘1’ for PSU 1 (bottom) and

‘2’ for PSU 2 (top).

3Com Switch 4050

Figure 3 3Com Switch 4050/4060 — rear view

and 4060 — Rear

View Detail

Expansion Module You can use this slot to install an Expansion Module. Contact your Slot supplier for further information.

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

Replaceable Power The 3Com Switch 4050 and 4060 has a bay for two internal power Supplies (PSUs) supplies. Contact your supplier for further information. For information

on installation and removal, please refer to the documentation that accompanies the replacement PSU.

The 3Com Switch 4050 and 4060 support the 3Com AC power supply unit (3C17718).

3Com Switch 4050 and 4060 — Rear View Detail 19

WARNING: The system must not be left without a power supply or a blanking plate in either of the two slots (except during replacement of the power supplies). Tighten all screws with a suitable screwdriver.

WARNING: Care must be taken when removing a PSU as it may be hot. The replacement of power supplies should be completed within two minutes to avoid normal cooling being disturbed.

Power Socket Each Power Supply automatically adjusts its power setting to any power voltage in the range 90-240 VAC.

WARNING: Mains power must be removed from the PSU before removing the PSU. A PSU must only be powered once it has been installed.

Replaceable Fan Trays The 3Com Switch 4050 and 4060 are provided with two identical fan trays which can be replaced. Contact your supplier for further information. For information on installation, please refer to the documentation that accompanies your fan tray.

The 3Com Switch 4050 and 4060 support the 3Com Fan Tray (3C17717).

WARNING: A fan tray can be temporarily removed and replaced while the system is running without impacting operations. The system must not be left with either fan tray removed for more than two minutes or damage to the product may be caused. Tighten all screws with a suitable screwdriver.

WARNING: Care must be taken when removing the fan tray as the fan blades may continue to spin for a short time after removal. Keep fingers clear.

CAUTION: You are advised to replace a failed fan as soon as possible. Although the unit will continue to operate after a single fan failure its airflow and temperature will be affected. In such circumstances, the unit may overheat and automatically shutdown. If the unit continues to operate with reduced airflow, its long term reliability will also be reduced.

20 CHAPTER 1: INTRODUCING THE 3COM SWITCH 4050 AND 4060

Default Settings Table 5 shows the default settings for the 3Com Switch 4050 and 4060. If you initialize one of the Switch units, it is returned to these defaults.

Table 5 Default Settings

Feature	3Com Switch 4050/4060

Port Status	Enabled
Port Speed	Auto-negotiated
Duplex Mode	Auto-negotiated
Flow Control	Auto-negotiated
Broadcast Storm Control	Enabled
	High threshold: 3000 broadcast frames per
	second — Notify and filter
	Low threshold: 1500 broadcast frames per
	second — Notify and unfilter
Virtual LANs (VLANs)	All ports belong to the untagged Default VLAN
	(VLAN 1)
Multicast Filtering	IGMP filtering enabled
Rapid Spanning Tree Protocol	Enabled
Link Aggregation Control	Enabled
Protocol (LACP)
Spanning Tree Protocol	Enabled
Smart Auto-sensing	Enabled
IP Address	169.254.100.100*
Subnet Mask	255.255.0.0

*This default IP address is used if the unit is operating in standalone mode, and/or no other Switches on the network have this IP address. If this default IP address is already in use then the Switch detects this and configures itself with an IP address in the range 169.254.1.0 to 169.254.254.255.

2	INSTALLING THE SWITCH

This chapter contains the information you need to install and set up the 3Com® Switch 4050 and 4060. It covers the following topics:

■Package Contents

■Choosing a Suitable Site

■Rack-mounting

■Placing Units On Top of Each Other

■The Power-up Sequence

■GBIC Operation

WARNING: Safety Information. Before installing or removing any components from the 3Com Switch 4050 and 4060 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 3Com Switch 4050 et 4060 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 3Com Switch 4050 und 4060 entfernen oder dem 3Com Switch 4050 und 4060 hinzufuegen oder Instandhaltungsarbeiten verrichten, lesen Sie die Sicherheitsanweisungen, die in Anhang A in diesem Handbuch aufgefuehrt sind.

22 CHAPTER 2: INSTALLING THE SWITCH

Package Contents	■	3Com Switch 4050 (3C17708) or Switch 4060 (3C17709)
	■	CD-ROM
	■	This Guide
	■ Management Quick Reference Guide
	■	Release Notes
	■	Warranty Flyer
	■	Power Cord
	■ 2 x securing brackets
	■	8 x screws
	■ 4 x rubber feet

Choosing a Suitable	The 3Com Switch 4050 and 4060 are suited for use in an internal wiring
Site	closet, a network room, or telecommunications room, where they can be

mounted in a standard 19-inch equipment rack, or free-standing.

CAUTION: Ensure that the ventilation holes are not obstructed.

To ensure these products provide optimum performance, high speed fans are used to provide ventilation. These fans have a high audible output.

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 25 mm (1 in.) 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.

Rack-mounting 23

■ The air is as free from dust as possible.

■ The Switch is situated away from sources of conductive (electrical) dust, for example laser printers.

	■ The unit is installed in a clean, air conditioned environment.
	■ 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.
	■ No more than four Switch units are placed on top of one another, if
	the units are free-standing.

Rack-mounting	The Switch 4050 and 4060 are 2U 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.
	CAUTION: If you use a shelf or support ensure that it will not obstruct
	the air flow through the side panels of the Switch.
	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 securing bracket over the mounting holes on one side of the
	Switch, as shown in Figure 4.
	3 Insert the four screws and tighten with a suitable screwdriver.

24 CHAPTER 2: INSTALLING THE SWITCH

Figure 4 Fitting a bracket for rack-mounting

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

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

5Insert the Switch into the 19-inch rack and secure with suitable screws (not provided). Ensure that ventilation holes are not obstructed.

6Connect network cabling.

Placing Units On If the Switch units are free-standing, up to four units can be placed one Top of Each Other on top of the other. If you are mixing a variety of 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.

Creating an XRN 3Com Switch 4050/4060 units and the Switch 4900 Series units can be Distributed Fabric interconnected to create an XRN Distributed Fabric and then treated as a

single manageable unit with one IP address. A combination of any two of these units is allowed to be interconnected.

Creating an XRN Distributed Fabric 25

How To Interconnect To interconnect any two Switch 4900 Series or Switch 4050/4060 units Units you will need to order the XRN Interconnect Module Kit (3C17715). The kit consists of two XRN Interconnect Modules and an Interconnect Cable.

Both Switches must have an unused expansion slot to allow an Interconnect Module to be fitted.

Figure 5 Interconnecting two Switch 4900 units

Rules For

Interconnecting Units

90	VS-UPPLY DATA
90	- 240	Hz	A	I

INPUT
V	A
27	12Max

(max)Console
19200,8,1,N	S/N:
	XXXX/7XXXXXXXXX

Unit 1
U	Activity
nit 2	Activity
	Status

XRN
Interconnect	Module
		(3C17716)

90	VS-UPPLY DATA
90	- 240	Hz	A	I

INPUT
V	A
27	12Max

(max)Console
19200,8,1,N	S/N:
	XXXX/7XXXXXXXXX

Unit 1
U	Activity
nit 2	Activity
	Status

XRN
Interconnect	Module
		(3C17716)

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

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

■The maximum number of Switch units that can be interconnected is two.

■XRN Interconnect Modules are NOT hot-swappable or hot-insertable. Ensure that the Switch is powered off before inserting or removing an Interconnect Module.

■Only 3Com XRN Interconnect Cables can be used to connect two Interconnect Modules.

■It is not possible to interconnect the Switch 4900 Series and Switch 4050/4060 units with any other 3Com device.

■3Com strongly recommends that you upgrade all Switches to be interconnected to the latest software agent.

■3Com recommends that you initialize a Switch unit that has previously been used elsewhere in your network before you interconnect to an

26 CHAPTER 2: INSTALLING THE SWITCH

existing unit. If you do not initialize the unit, problems may be caused by conflicting Switch configurations.

■When the Switch units are interconnected they are assigned a unit number dependent on which XRN Interconnect Cable end is connected to which Switch. That is, the Switch with the blue cable end will be assigned the identity of Unit 1 and the Switch with the yellow cable end will be assigned the identity of Unit 2.

For a detailed description of how XRN Technology operates and implementation guidelines, please refer to the Implementation Guide on the CD-ROM that accompanies your Switch or on the 3Com Web site.

The Power-up	The following sections describe how to get your 3Com Switch 4050 and
Sequence	4060 powered-up and ready for operation.

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

3Com Switch 4050 and 4060

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

2Plug 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.

Repeat for the second power supply if it is fitted.

Checking for Correct During the Power On Self Test, all ports on the Switch are disabled and Operation of LEDs the LEDs light in a rapid sequence.

When the POST has completed, check the Unit Status to make sure that your Switch is operating correctly. Table 6 shows possible colors for the LED.

Table 6 Unit Status Colors

Color	State

Green	The Switch is powered-up and operating normally.
Yellow	The Switch has failed its Power On Self Test (POST).
Off	The Switch is not receiving power.

+ 60 hidden pages

	Rules For Interconnecting Units				25
	The Power-up Sequence		26
	Powering-up the 3Com Switch 4050 and 4060							26
	Checking for Correct Operation of LEDs						26
	Choosing the Correct 10/100/1000 Cables 27
	Choosing the correct Fiber cables				28
	GBIC Operation 28
	Approved GBIC Transceivers			28
	Inserting a GBIC Transceiver			29

3 SETTING UP FOR MANAGEMENT
	Setting Up Overview 32
	IP Configuration	33
	Preparing for Management			34
	Manually Configuring IP Information				35
	Connecting to a Front Panel Port				35
	Connecting to the Console Port				38
	Viewing Automatically Configured IP Information							41
	Using 3Com Network Supervisor				41
	Connecting to the Console Port				42
	Methods of Managing a Switch			44
	Command Line Interface Management						44
	Web Interface Management			45
	SNMP Management		45
	Setting Up Command Line Interface Management							46
	CLI Management via the Console Port						46
	CLI Management over the Network					46
	Setting Up Web Interface Management					47
	Pre-requisites	47
	Web Management Over the Network						48
	Setting Up SNMP Management			49
	Pre-requisites	49
	Default Users and Passwords 49
	Changing Default Passwords			50

4 PROBLEM SOLVING
	Solving Problems Indicated by LEDs				52

	Solving Hardware Problems		54
	Solving Communication Problems			58
	Solving Software Upgrade Problems			59
A
A	SAFETY INFORMATION
	Important Safety Information		62
	L’information de Sécurité Importante			65
	Wichtige Sicherheitsinformationen			68
B
B	PIN-OUTS
	Null Modem Cable	71
	PC-AT Serial Cable	71
	Modem Cable 72

Online Technical Services		77
World Wide Web Site		77
3Com Knowledgebase Web Services			77
3Com FTP Site	78
Support from Your Network Supplier			78
Support from 3Com	79
Email Support	79
Telephone Support		79
Returning Products for Repair 81

About the 3Com Switch 4050 and 4060			12
Summary of Hardware Features 13
3Com Switch 4050 and 4060 — Front View Detail				14
1000BASE-SX Ports 15
10BASE-T/100BASE-TX/1000BASE-T Ports 15
GBIC Ports	15
Console Port	15
LEDs 16
3Com Switch 4050 and 4060 — Rear View Detail				18
Expansion Module Slot		18
Replaceable Power Supplies (PSUs)			18
Power Socket	19
Replaceable Fan Trays		19
Default Settings	20

Package Contents	22
Choosing a Suitable Site 22
Rack-mounting	23
Placing Units On Top of Each Other		24
Creating an XRN Distributed Fabric		24
How To Interconnect Units 25