3COM 2924-PWR User Manual

3Com® Baseline Switch 2924-PWR Plus

User Guide

3CBLSG24PWR

www.3Com.com

Part Number 10016095 Rev. AA Published June 2007

3Com Corporation

350 Campus Drive

Marlborough,

MA 01752-3064

Copyright © 2007, 3Com Corporation. All rights reserved. No part of this documentation may be reproduced in any form or by any means or used to make any derivative work (such as translation, transformation, or adaptation) without written permission from 3Com Corporation.

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

3Com Corporation provides this documentation without warranty, term, or condition of any kind, either implied or expressed, including, but not limited to, the implied warranties, terms or conditions of merchantability, satisfactory quality, and fitness for a particular purpose. 3Com may make improvements or changes in the product(s) and/or the program(s) described in this documentation at any time.

If there is any software on removable media described in this documentation, it is furnished under a license agreement included with the product as a separate document, in the hard copy documentation, or on the removable media in a directory file named LICENSE.TXT or !LICENSE.TXT. If you are unable to locate a copy, please contact 3Com and a copy will be provided to you.

UNITED STATES GOVERNMENT LEGEND

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

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

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.

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 Novell, Inc. UNIX is a registered trademark in the United States and other countries, licensed exclusively through X/Open Company, Ltd.

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

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.

ABOUT THIS GUIDE

	This guide provides information about the Web user interface for the
	3Com® Baseline Switch 2924-PWR Plus. The Web interface is a network
	management system that allows you to configure, monitor, and
	troubleshoot your switch from a remote web browser. The Web interface
	web pages are easy-to-use and easy-to-navigate.
User Guide	This section provides an overview to the User Guide. The User Guide
Overview	provides the following sections:
	■ Getting Started — Provides introductory information about the
	Switch 2924-PWR and how it can be used in your network. It covers
	summaries of hardware and software features.
	■ Using the 3Com Web Interface — Provides information for using
	the Web interface including adding, editing, and deleting device
	configuration information.
	■ Viewing Basic Settings — provides information for viewing and
	configuring essential information required for setting up and
	maintaining device settings.
	■ Managing Device Security — Provides information for configuring
	both system and network security, including traffic control, ACLs, and
	device access methods.
	■ Managing System Information — Provides information for
	configuring general system information including the user-defined
	system name, the user-defined system location, and the system
	contact person.
	■ Configuring Ports — Provides information for configuring port
	settings.
	■ Aggregating Ports — Provides information for configuring Link
	Aggregation which optimizes port usage by linking a group of ports
	together to form a single LAG.

4 ABOUT THIS GUIDE

■Configuring VLANs — Provides information for configuring VLANs. VLANs are logical subgroups with a Local Area Network (LAN) which combine user stations and network devices into a single virtual LAN segment, regardless of the physical LAN segment to which they are attached.

■Configuring IP and MAC Address Information — Provides information for configuring IP addresses, DHCP and ARP.

■Configuring IGMP Snooping — Provides information for configuring IGMP Snooping.

■Configuring Spanning Tree — Provides information for configuring Classic and Rapid Spanning Tree.

■Configuring SNMP — Provides information for configuring the

Simple Network Management Protocol (SNMP) which provides a method for managing network devices.

■Configuring Quality of Service — Provides information defining Quality of Service, including DSCP and CoS mapping, policies, and configuring Trust mode.

■Managing System Files — Provides information for defining file maintenance.

■Managing Power over Ethernet Devices — Provides information for configuring ports for PoE.

■Managing System Logs — Provides information for viewing system logs, and configuring device log servers.

■Viewing Statistics — Provides information for viewing RMON and interface statistics.

■Managing Device Diagnostics — Provides information for managing device diagnostics.

Intended Audience

5

Intended Audience This guide is intended for network administrators familiar with IT concepts and terminology.

If release notes are shipped with your product and the information there differs from the information in this guide, follow the instructions in the release notes.

Most user guides and release notes are available in Adobe Acrobat

Reader Portable Document Format (PDF) or HTML on the 3Com Web site:

■ http://www.3Com.com

Conventions	Table 1 lists conventions that are used throughout this guide.
	Table 1	Notice Icons
	Icon	Notice Type	Description
		Information	Information that describes important features or
		note	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.

Related	In addition to this guide, other documentation available for the 3Com®
Documentation	Baseline Switch 2924-PWR Plus include the following:
	■ Safety and Support Information: Provides installation, set-up, and
	regulatory compliance information.

CONTENTS

ABOUT THIS GUIDE
User Guide Overview .................................................................................	3
Intended Audience.....................................................................................	5
Conventions ..............................................................................................	5
Related Documentation .............................................................................	5
1 GETTING STARTED
About the Switch 2924-PWR ...................................................................	14
Summary of Hardware Features .....................................................	14
Front Panel Detail.....................................................................................	15
LED Status Indicators................................................................................	16
System Specifications ...............................................................................	17
Installing the Switch.................................................................................	18
Setting Up for Management ....................................................................	19
Methods of Managing a Switch ...............................................................	19
Web Interface Management ..........................................................	19
SNMP Management .......................................................................	20
Switch Setup Overview ............................................................................	20
IP Configuration ............................................................................	22
Using the Command Line Interface (CLI) ..................................................	23
Connecting to the Console Port .....................................................	23
Manually set the IP Address using the Console Port .......................	24
Viewing IP Information using the Console Port ...............................	25
Setting Up Web Interface Management ...................................................	27
Web Management Over the Network ............................................	28
Setting Up SNMP Management V1 or V2 .................................................	28
Default Users and Passwords....................................................................	29
Upgrading Software using the CLI............................................................	29

2 USING THE 3COM WEB INTERFACE
	Starting the 3Com Web Interface .............................................................	31
	Multi-Session Web Connections .....................................................	31
	Accessing the 3Com Web Interface ................................................	32
	Understanding the 3Com Web Interface...................................................	33
	Device Representation ....................................................................	35
	Using the 3Com Web Interface Management Buttons ....................	35
	Using Screen and Table Options................................................................	36
	Saving the Configuration..........................................................................	40
	Resetting the Device.................................................................................	41
	Restoring Factory Defaults ........................................................................	43
	Logging Off the Device.............................................................................	44
3	VIEWING BASIC SETTINGS
	Viewing Device Settings .................................................................	46
	Viewing Color Keys ........................................................................	48
4	MANAGING DEVICE SECURITY
	Configuring System Access.......................................................................	50
	Viewing System Access Settings .....................................................	51
	Defining System Access ..................................................................	52
	Modifying System Access ...............................................................	53
	Removing System Access ................................................................	54
	Defining RADIUS Clients...........................................................................	55
	Defining Port-Based Authentication (802.1X)............................................	57
	Viewing 802.1X Authentication .....................................................	58
	Defining 802.1X Authentication .....................................................	60
	Defining Access Control Lists....................................................................	62
	Viewing MAC Based ACLs ..............................................................	63
	Configuring MAC Based ACLs ........................................................	64
	Modifying MAC Based ACLs ..........................................................	67
	Removing MAC Based ACLs ...........................................................	69
	Viewing IP Based ACLs ...................................................................	71
	Defining IP Based ACLs ..................................................................	72
	Modifying IP Based ACLs ................................................................	77
	Removing IP Based ACLs ................................................................	80

	Viewing ACL Binding .....................................................................	83
	Configuring ACL Binding ...............................................................	84
	Removing ACL Binding ..................................................................	85
	Enabling Broadcast Storm ........................................................................	86
5	MANAGING SYSTEM INFORMATION
	Viewing System Description ...........................................................	89
	Defining System Settings ...............................................................	91
	Configuring System Name .............................................................	92
	Configuring System Time ...............................................................	93
	Saving the Device Configuration ....................................................	96
	Resetting the Device ......................................................................	97
6	CONFIGURING PORTS
	Viewing Port Settings .....................................................................	99
	Defining Port Settings ..................................................................	102
	Viewing Port Details .....................................................................	104
7	AGGREGATING PORTS
	Viewing Link Aggregation ............................................................	107
	Configuring Link Aggregation ......................................................	107
	Modifying Link Aggregation ........................................................	110
	Removing Link Aggregation .........................................................	112
	Viewing LACP ..............................................................................	113
	Modifying LACP ...........................................................................	114
8	CONFIGURING VLANS
	Viewing VLAN Details ..................................................................	117
	Viewing VLAN Port Details ...........................................................	118
	Creating VLANs ...........................................................................	119
	Modifying VLAN Settings .............................................................	121
	Modifying Port VLAN Settings ......................................................	123
	Removing VLANs .........................................................................	124

9 CONFIGURING IP AND MAC ADDRESS INFORMATION
	Defining IP Addressing .................................................................	126
	Configuring ARP Settings .......................................................................	127
	Viewing ARP Settings ...................................................................	128
	Defining ARP Settings ..................................................................	129
	Removing ARP Entries ..................................................................	130
	Configuring Address Tables ....................................................................	132
	Viewing Address Table Settings ....................................................	133
	Viewing Port Summary Settings ....................................................	134
	Adding MAC Addresses to the Address Table ...............................	136
	Defining Aging Time ....................................................................	138
	Removing Address Table Ports ......................................................	139
	Removing MAC Addresses from the Address Table .......................	141
10 CONFIGURING IGMP SNOOPING
	Defining IGMP Snooping ..............................................................	144
11	CONFIGURING SPANNING TREE
	Viewing Spanning Tree .................................................................	147
	Defining Spanning Tree ................................................................	150
	Modifying Spanning Tree ..............................................................	153
12	CONFIGURING SNMP
	Defining SNMP Communities .......................................................	156
	Removing SNMP Communities .....................................................	158
	Defining SNMP Traps ....................................................................	159
	Removing SNMP Traps ..................................................................	160
13 CONFIGURING QUALITY OF SERVICE
	Viewing CoS Settings ...................................................................	163
	Defining CoS ................................................................................	164
	Viewing CoS to Queue .................................................................	165
	Defining CoS to Queue ................................................................	165
	Viewing DSCP to Queue ...............................................................	167
	Configuring DSCP Queue .............................................................	168

	Configuring Trust Settings ...........................................................	169
	Viewing Bandwidth Settings ........................................................	170
	Defining Bandwidth Settings ........................................................	172
	Defining Voice VLAN..............................................................................	174
	Viewing Voice VLANs ...................................................................	175
	Defining Voice VLAN ....................................................................	176
	Defining Voice VLAN Port Settings ...............................................	177
	Viewing Voice VLAN Port Definitions ............................................	179
	Viewing the OUI Summaries ........................................................	180
	Modifying OUI Definitions ............................................................	182
14	MANAGING SYSTEM FILES
	Backing Up System Files ...............................................................	186
	Restoring Files ..............................................................................	187
	Restore the Software Image .........................................................	188
	Activating Image Files ..................................................................	189
15 MANAGING POWER OVER ETHERNET DEVICES
	Viewing PoE Settings ...................................................................	191
	Defining PoE Settings ...................................................................	193
16	MANAGING SYSTEM LOGS
	Viewing Logs ...............................................................................	196
	Configuring Logging ....................................................................	197
17	VIEWING STATISTICS
	Viewing Port Statistics ..................................................................	201
18	MANAGING DEVICE DIAGNOSTICS
	Configuring Port Mirroring.....................................................................	205
	Defining Port Mirroring ................................................................	206
	Removing Port Mirroring ..............................................................	208
	Viewing Cable Diagnostics.....................................................................	209
	Configuring Cable Diagnostics .....................................................	210

A	3COM NETWORK MANAGEMENT
	3Com Network Supervisor......................................................................	212
	3Com Network Director .........................................................................	213
	3Com Network Access Manager ............................................................	213
	3Com Enterprise Management Suite ......................................................	214
	Integration Kit with HP OpenView Network Node Manager....................	214
B
	DEVICE SPECIFICATIONS AND FEATURES
	Related Standards ..................................................................................	215
	Environmental ........................................................................................	215
	Physical ..................................................................................................	215
	Electrical.................................................................................................	216
	Switch Features ......................................................................................	216
C
	PIN-OUTS
	Null Modem Cable .................................................................................	221
	PC-AT Serial Cable..................................................................................	221
	Modem Cable ........................................................................................	222
	Ethernet Port RJ-45 Pin Assignments ......................................................	222
D
	TROUBLESHOOTING
	Problem Management............................................................................	224
	Troubleshooting Solutions ......................................................................	224
E
	3COM CLI REFERENCE GUIDE
	Getting Started with the Command Line Interface..................................	227
	Console Port ................................................................................	227
	Logging on to the CLI ..................................................................	227
	Automatic Logout ........................................................................	228
	Concurrent CLI Sessions ...............................................................	228
	CLI Commands.......................................................................................	228
	? ..................................................................................................	229
	Ping .............................................................................................	230
	Summary .....................................................................................	231
	ipSetup ........................................................................................	232

	Upgrade ......................................................................................	233
	Initialize .......................................................................................	234
	Reboot ........................................................................................	235
	Logout .........................................................................................	236
	Password .....................................................................................	237
F	GLOSSARY
	.............................................................................................................	238
G	OBTAINING SUPPORT FOR YOUR 3COM PRODUCTS
	Register Your Product to Gain Service Benefits .......................................	244
	Solve Problems Online............................................................................	244
	Purchase Extended Warranty and Professional Services...........................	244
	Access Software Downloads ..................................................................	245
	Contact Us.............................................................................................	245
	Telephone Technical Support and Repair ......................................	245
	REGULATORY NOTICES

1	GETTING STARTED

This chapter contains introductory information about the 3Com® Baseline Switch 2924-PWR Plus (hereafter called the Switch) and how they can be used in your network. It covers summaries of hardware and software features and also the following topics:

■About the Switch 2924-PWR

■Front Panel Detail

■LED Status Indicators

■System Specifications

■Installing the Switch

■Setting Up for Management

■Methods of Managing a Switch

■Switch Setup Overview

■Using the Command Line Interface (CLI)

■Setting Up Web Interface Management

■Setting Up SNMP Management V1 or V2

■Default Users and Passwords

■Upgrading Software using the CLI

14 CHAPTER 1: GETTING STARTED

About the Switch The Switch 2924-PWR is a Gigabit Ethernet switching products that 2924-PWR delivers flexible three-speed performance (10/100/1000), Power over

Ethernet (PoE) and advanced voice-optimized features such as auto-QoS and auto-voice VLAN. This makes the switch ideal for medium businesses and small enterprises seeking to build a secure converged network.

The Switch 2924-PWR includes the following model:

■ Baseline Switch 2924-PWR Plus 24-Port

The Switch 2924-PWR features the following advantages:

■Full Gigabit speed access ports

■Jumbo frames support

■Port security

■Link aggregation control protocol (LACP)

■Up to 256 VLANs

■Access control lists (ACLs)

■Port-based mirroring

Summary of Table 1 summarizes the hardware features supported by the Switch

Hardware Features 2924-PWR.

Table 1 Hardware Features

Feature	Switch 2924-PWR
Addresses	Up to 8,000 supported
Auto-negotiation	Supported on all ports
Forwarding Modes	Store and Forward
Duplex Modes	Half and full duplex on all front panel ports
Auto MDI/MDIX	Supported on all ports. If fiber SFP transceivers are used,
	Auto MDIX is not supported.
Flow Control	In full duplex operation all ports are supported.
	The Switch 2924-PWR ports are capable of receiving,
	but not sending pause frames.
Traffic Prioritization	Supported (using the IEEE Std 802.ID, 1998 Edition):
	Four traffic queues per port

Front Panel Detail 15

Table 1 Hardware Features (continued)

Feature	Switch 2924-PWR
Ethernet, Fast Ethernet,	Auto-negotiating 10/100/1000BASE-T ports
and Gigabit Ethernet Ports
SFP Ethernet Ports	Supports fiber Gigabit Ethernet long-wave (LX), and
	fiber Gigabit Ethernet short-wave (SX) transceivers in
	any combination.
Mounting	19-inch rack or standalone mounting

Front Panel Detail Figure 1 shows the front panel of the Switch 2924-PWR Plus 24-Port unit

			Figure 1 Switch 2924-PWR Plus 24-Port—front panel.
1	4	5	8	9	12
						22	24
13	16 17		20		24	21	23

16 CHAPTER 1: GETTING STARTED

LED Status	The 2924-PWR SFP Plus 24-Port Ethernet switch provides LED indicators
Indicators	on the front panel for your convenience to monitor the switch. Table 2
	describes the meanings of the LEDs.
	Table 2 Description on the LEDs of the Switch 2924-PWR

	LED	Label	Status	Description
	Power	Power	Green	The switch starts normally. The LED flashes
				when the system is performing power-on self
				test (POST).
			Yellow	The system has failed the POST.
			OFF	The switch is powered off.
	10/100/1000	Link/	Green	The port works at the rate of 1000 Mbps; the
	BASE-T	Activity		LED flashes quickly when the port is sending
	Ethernet port			or receiving data.
	status
			Yellow	The port works at the rate of 10/100 Mbps;
				the LED flashes quickly when the port is
				sending or receiving data.
			OFF	The port is not connected.
	Duplex mode	Duplex	Yellow	The port is in full duplex mode.
			OFF	The port is not connected, or is in half duplex
				mode.
	1000Base SFP	SFP	Green	The SFP module is inserted.
	port status	Module
			OFF	The SFP module is not inserted or is not
		Active
				recognized.
	PoE status	PoE	Green	Delivering power. The LED flashes if a fault
		Status		occurs.
			OFF	Not delivering power.

		System Specifications 17
System	Table 3 contains the system specifications of the 2924-PWR series
Specifications	switch.
	Table 3 System specifications of the Switch 2924PWR series switch
	Specification	Switch 2924-PWR Plus 24-Port 3CBLSG24PWR
	Physical dimensions	44×440×265 mm (1.73 17.3 10.43 in.)
	(H×W×D)
	Weight	3.6 kg (7.9 lb)
	Console port	One Console port
	Gigabit Ethernet ports on	24 × 10/100/1000 Mbps Ethernet ports
	the front panel	Four Gigabit SFP Combo ports
	AC Input voltage	Rated voltage range: 100–240 VAC, 50/60 Hz
	Power consumption	350 W
	(full load)
	Operating temperature	0 to 40 °C (32 to 113 °F)
	Relative humidity	10 to 90% noncondensing

Additional specifications can be found in Appendix B “Device

Specifications and Features”.

18 CHAPTER 1: GETTING STARTED

Installing the	This section contains information that you need to install and set up your
Switch	3Com switch.
	WARNING: Safety Information. Before you install or remove any
	components from the Switch or carry out any maintenance procedures,
	you must read the 3Com Switch Family Safety and Regulatory
	Information document enclosed.
	AVERTISSEMENT: Consignes de securite. Avant d'installer ou d'enlever
	tout composant de Switch ou d'entamer une procedure de maintenance,
	lisez les informations relatives a la securite qui se trouvent dans 3Com
	Switch Family Safety and Regulatory Information.
	VORSICHT: Sicherheitsinformationen. Bevor Sie Komponenten aus
	dem Switch entfernen oder den Switch hinzufugen oder
	Instandhaltungsarbeiten verrichten, lesen Sie die 3Com Switch Family
	Safety and Regulatory Information.
	ADVERTENCIA: Informacion de seguridad. Antes de instalar o extraer
	cualquier componente del Switch o de realizar tareas de mantenimiento,
	debe leer la informacion de seguridad facilitada en el 3Com Switch Family
	Safety and Regulatory Information.
	AVVERTENZA: Informazioni di sicurezza. Prima di installare o
	rimuovere qualsiasi componente dal Switch o di eseguire qualsiasi
	procedura di manutenzione, leggere le informazioni di sicurezza riportate
	3Com Switch Family Safety and Regulatory Information.
	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 3Com Switch Family
	Safety and Regulatory Information.

CAUTION Opening the switch or tampering with the warranty sticker can void your warranty.

Setting Up for Management 19

Setting Up for	To make full use of the features offered by your switch, and to change
Management	and monitor the way it works, you have to access the management
	software that resides on the switch. This is known as managing the
	switch. Managing the switch can help you to improve the efficiency of
	the switch and therefore the overall performance of your network.
	This section explains the initial set up of the switch and the different
	methods of accessing the management software to manage a switch. It
	covers the following topics:
	■ Methods of Managing a Switch
	■ Switch Setup Overview
	■ Manually set the IP Address using the Console Port
	■ Viewing IP Information using the Console Port
	■ Setting Up Web Interface Management
	■ Setting Up SNMP Management V1 or V2
	■ Default Users and Passwords

Methods of

Managing a Switch

Web Interface

Management

To manage your switch you can use one of the following methods:

■Web Interface Management

■SNMP Management

In addition, you can use the Command Line Interface through the Console port for basic operations of the switch including setting and viewing the IP address, configuring user accounts, upgrading switch firmware, and more. Refer to “3Com CLI Reference Guide” on page 227.

Each switch has an internal set of web pages that allow you to manage the switch using a Web browser remotely over an IP network (see Figure 2).

20 CHAPTER 1: GETTING STARTED

Figure 2 Web Interface Management over the Network

	Switch
	Workstation
	Connect over Network
	via web browser
	Refer to “Setting Up Web Interface Management” on page 27.
SNMP Management	You can manage a switch using any network management workstation
	running the Simple Network Management Protocol (SNMP) as shown in
	Figure 3. For example, you can use the 3Com Network Director software,
	available from the 3Com website.
	Figure 3 SNMP Management over the Network
	SNMP Network Management	Switch
	Workstation
	Connect over Network
	using SNMP
	Refer to “Setting Up SNMP Management V1 or V2” on page 28.
Switch Setup	This section gives an overview of what you need to do to get your switch
Overview	set up and ready for management when it is in its default state. The
	whole setup process is summarized in Figure 4. Detailed procedural steps
	are contained in the sections that follow. In brief, you need to:

■ Configure IP information manually for your switch or view the automatically configured IP information

■ Prepare for your chosen method of management

Switch Setup Overview

21

Figure 4 Initial Switch Setup and Management Flow Diagram

Power Up the Switch.

Setup

Yes

No

Is a DHCP server present?

and Play

Plug

IP Information is automatically

The switch uses its default IP

configured using DHCP

information

See page 22

See page 22

Yes

Do you want to manually

No

configure the IP information?

Setup

How do you want to connect to the Switch?

How do you want to view the automatically

InformationIP

Refer to the label on

Connect to the

Connect to the

Connect to a front panel

configured IP information?

Initial

console port and use

port and use the Web

the rear of the switch

console port and use

the Command Line

Interface.

which details the

the Command Line

Interface.

See page 27

default IP address.

Interface.

See page 23

See page 25

		How do you want to manage your Switch? See page 19
	Feature Management	Command Line Interface	SNMP	Web Interface
		(basic setup only)	See page 28
		Connect using the		Connect over the
		console port.		network.
		See page 23		See page 28

CAUTION To protect your switch from unauthorized access, you must change the default password as soon as possible, even if you do not intend to actively manage your switch. For more information on default users and changing default passwords, see “Default Users and Passwords” on page 29.

22 CHAPTER 1: GETTING STARTED

IP Configuration The switch’s IP configuration is determined automatically using DHCP, or manually using values you assign.

Automatic IP Configuration using DHCP

By default the switch tries to configure its IP Information without requesting user intervention. It tries to obtain an IP address from a DHCP server on the network.

Default IP Address If no DHCP server is detected, the switch will use its default IP information. The default IP address is 169.254.x.y, where x and y are the last two bytes of its MAC address.

Note: The switch’s default IP address is listed on a label located on the rear of the switch.

If you use automatic IP configuration it is important that the IP address of the switch is static, otherwise the DHCP server can change the switch’s IP addresses and it will be difficult to manage. Most DHCP servers allow static IP addresses to be configured so that you know what IP address will be allocated to the switch. Refer to the documentation that accompanies your DHCP server.

You should use the automatic IP configuration method if:

■your network uses DHCP to allocate IP information, or

■flexibility is needed. If the switch is deployed onto a different subnet, it will automatically reconfigure itself with an appropriate IP address, instead of you having to manually reconfigure the switch.

If you use the automatic IP configuration method, you need to discover the automatically allocated IP information before you can begin management. Work through the “Viewing IP Information using the Console Port” on page 25.

Manual IP Configuration

When you configure the IP information manually, the switch remembers the information that you enter until you change it again.

You should use the Manual IP configuration method if:

■You do not have a DHCP server on your network, or

■You want to remove the risk of the IP address ever changing, or

Using the Command Line Interface (CLI) 23

■ Your DHCP server does not allow you to allocate static IP addresses. (Static IP addresses are necessary to ensure that the switch is always allocated the same IP information.)

	For most installations, 3Com recommends that you configure the switch
	IP information manually. This makes management simpler and more
	reliable as it is not dependent on a DHCP server, and eliminates the risk of
	the IP address changing.
	To manually enter IP information for your switch, work through the
	“Manually set the IP Address using the Console Port” on page 24.
Using the	You can access the switch through the Console port to manually set the
Command Line	IP address, or to view the IP address that was assigned automatically (for
Interface (CLI)	example, by a DHCP server).
	For more information about the CLI, refer to “3Com CLI Reference Guide”
	on page 227.
Connecting to the	This section describes how to connect to your switch through the
Console Port	Console port.

Prerequisites

■A workstation with terminal emulation software installed, such as Microsoft Hyperterminal. This software allows you to communicate with the switch using the console port directly.

■Documentation supplied with the terminal emulation software.

■The console cable (RJ-45) supplied with your switch.

You can find pin-out diagrams for the cable in Appendix C on page 221.

24 CHAPTER 1: GETTING STARTED

Connecting the Workstation to the Switch

1Connect the workstation to the console port using the console cable as shown in Figure 5.

Figure 5 Connecting a Workstation to the Switch using the Console Port

Workstation

(with terminal emulation Switch software installed)

Console Port

Connection

Console Cable

Manually set the IP Address using the Console Port

To connect the cable:

aAttach the cable’s RJ-45 connector to the Console port of the switch.

bAttach the other end of the cable to the workstation.

2Open your terminal emulation software and configure the COM port settings to which you have connected the cable. The settings must be set to match the default settings for the switch, which are:

■38,400 baud (bits per second)

■8 data bits

■no parity

■1 stop bit

■no hardware flow control

Refer to the documentation that accompanies the terminal emulation software for more information.

3Power up the switch. The Power on Self Test (POST) will be performed. The Switch 2924-PWR takes approximately one minute to boot.

You are now ready to manually set up the switch with IP information using the command line interface.

■You need to have the following information:

■IP address

■subnet mask

■default gateway

Using the Command Line Interface (CLI) 25

1Connect to the switch Console port as described in “Connecting to the Console Port” page 23.

2The command line interface login sequence begins as soon as the switch detects a connection to its console port. When the process completes, the Login prompt displays.

3At the login prompt, enter admin as your user name and press Return. The Password prompt displays.

4Press Return. If you have logged on correctly, Select menu option# should be displayed.

5Enter the IP address and subnet mask for the switch as follows:

ipSetup xxx.xxx.xxx.xxx mmm.mmm.mmm.mmm ggg.ggg.ggg.gggg

and press Enter.

(Note: xxx.xxx.xxx.xxx is the IP address, mmm.mmm.mmm.mmm is the subnet mask, and ggg.ggg.ggg.ggg is the default gateway of the switch.)

6Enter the logout command to terminate the CLI session.

The initial setup of your switch is now complete and the switch is ready for you to set up your chosen management method. See “Methods of Managing a Switch” on page 19.

Viewing IP This section describes how to view the automatically allocated IP Information using the information using the command line interface. The automatic IP

Console Port configuration process usually completes within one minute after the switch is connected to the network and powered up.

1Connect to the switch Console port as described in “Connecting to the Console Port” page 23.

The automatic IP configuration process usually completes within one minute.

2The command line interface login sequence begins as soon as the switch detects a connection to its console port.

3At the login prompt, enter admin as your user name and press Return.

4At the password prompt, press Return.If you have logged on correctly,

Select menu option# is displayed.

26 CHAPTER 1: GETTING STARTED

5Enter Summary to view a summary of allocated IP addresses. The following is an example of the display from the Summary command.

Select menu option# summary

IP Method:	default
IP address:	169.254.99.51
Subnet mask:	255.255.0.0
Runtime version:	00_00_38 (date 01-Apr-2007 time 15:31:29)
Bootcode version:	1.0.0.12 (date 01-Apr-2007 time 17:44:52)
Select menu option#

The initial set up of your switch is now complete and the switch is ready for you to set up your chosen management method. See “Methods of Managing a Switch” on page 19.

For more information about the CLI, refer to “3Com CLI Reference Guide” on page 227.

If you do not intend to use the command line interface using the console port to manage the switch, you can logout, disconnect the serial cable and close the terminal emulator software.

Setting Up Web Interface Management 27

Setting Up Web	This section describes how you can set up web interface management
Interface	over the network.
Management	Prerequisites
	■ Ensure you have already set up the switch with IP information as
	described in “Methods of Managing a Switch” on page 19.
	■ Ensure that the switch is connected to the network using a Category 5
	twisted pair Ethernet cable with RJ-45 connectors.
	■ A suitable Web browser.
	Choosing a Browser
	To display the web interface correctly, use one of the following Web
	browser and platform combinations:

Table 4 Supported Web Browsers and Platforms

		Platform
Browser	Windows 2000	Windows XP	Windows Vista
Internet Explorer 6	Yes	Yes	Yes
Internet Explorer 7	Yes	Yes	Yes
Firefox 1.5	Yes	Yes	Yes
Firefox 2	Yes	Yes	Yes
Netscape 8	Yes	Yes	Yes

For the browser to operate the web interface correctly, JavaScript and Cascading Style Sheets must be enabled on your browser. These features are enabled on a browser by default. You will only need to enable them if you have changed your browser settings.

The switch’s Web interface supports both secure (HTTPS) and non-secure (HTTP) connections.

28 CHAPTER 1: GETTING STARTED

Web Management To manage a switch using the web interface over an IP network:

Over the Network

1Be sure that you know your switch’s IP address. See “IP Configuration” on page 22, and “Viewing IP Information using the Console Port” on page 25.

2Check that your management workstation is on the same subnet as your switch.

3Check you can communicate with the switch by entering a ping command at the DOS or CMD prompt in the following format:

c:\ ping xxx.xxx.xxx.xxx

(where xxx.xxx.xxx.xxx is the IP address of the switch)

If you get an error message, check that your IP information has been entered correctly and the switch is powered up.

4Open your web browser and enter the IP address of the switch that you wish to manage in the URL locator, for example, in the following format:

http://xxx.xxx.xxx.xxx

5At the login and password prompts, enter admin as your user name and press Return at the password prompt (or the password of your choice if you have already modified the default passwords).

The main Web interface page is displayed.

Setting Up SNMP You can use any network management application running the Simple Management V1 or Network Management Protocol (SNMP) to manage the switch. 3Com V2 offers a range of network management applications to address networks

of all sizes and complexity. See “3Com Network Management” on page 212.

Be sure the management workstation is connected to the switch using a port in VLAN 1 (the Default VLAN). By default, all ports on the switch are in VLAN 1.

To display and configure SNMP management parameters, refer to

“Configuring SNMP” on page 155.

Default Users and Passwords

29

Default Users and If you intend to manage the switch or to change the default passwords, Passwords you must log in with a valid user name and password. The switch has one

default user name. The default user is listed in Table 5.

Table 5 Default Users

User Name	Default	Access Level
	Password
admin	(no password)	Management — The user can access and change
		all manageable parameters

Use the admin default user name (no password) to login and carry out initial switch setup.

Upgrading Software using the CLI

This section describes how to upgrade software to your Switch from the Command Line Interface (CLI).

Note: You can also upgrade the software using the switch Web user interface. See “Restore the Software Image” page 188. Bootcode can only be upgraded using the CLI.

1To download the runtime application file, enter: upgrade aaa.aaa.aaa.aaa rrr runtime

where aaa.aaa.aaa.aaa is the IP address of the TFTP server and rrr is the source runtime filename.

2To download the bootcode file, enter:

upgrade aaa.aaa.aaa.aaa bbb bootcode

where aaa.aaa.aaa.aaa is the IP address of the TFTP server and bbb is the source bootcode filename.

The bootcode firmware may not require upgrading for every software upgrade, therefore there may not be a new bootcode file to download.

3To set the switch to boot from the new software you have downloaded, enter the following:

reboot

The following prompt displays:

Are you sure you want to reboot the system (yes, no):

4Enter yes and press Return. The system reboots the switch.

2	USING THE 3COM WEB INTERFACE

This section provides an introduction to the user interface, and includes the following topics:

■Starting the 3Com Web Interface

■Understanding the 3Com Web Interface

■Saving the Configuration

■Resetting the Device

■Restoring Factory Defaults

■Logging Off the Device