3com Switch Management Guide c02616745

7/31/2019 3com Switch Management Guide c02616745

1/117

ents

//support.3com.com/infodeli/tools/switches/ss/fast/dha1730-0aaa02/htm/contents/contents.htm[11/15/2010 2:49:29 PM]


2/117

duction

//support.3com.com/infodeli/tools/switches/ss/fast/dha1730-0aaa02/htm/introduction/introduction.htm[11/15/2010 2:49:33 PM]
http://history.go%28-1%29/


3/117

Interface - Operations

//support.3com.com/infodeli/tools/switches/ss/fast/dha1730-0aaa02/htm/web/web.htm[11/15/2010 2:49:36 PM]


4/117

mand Line Interface - Commands

//support.3com.com/infodeli/tools/switches/ss/fast/dha1730-0aaa02/htm/cli/cli.htm[11/15/2010 2:49:39 PM]


5/117

agement Interface Reference Guide - Support

//support.3com.com/infodeli/tools/switches/ss/fast/dha1730-0aaa02/htm/support/support.htm[11/15/2010 2:49:43 PM]


6/117

ch the Reference Guide

//support.3com.com/infodeli/tools/switches/ss/fast/dha1730-0aaa02/htm/search/search.htm[11/15/2010 2:49:46 PM]

Search

earch the Reference Guide

The search engine will find pages within the entire Guide.

For best results enter just one or two words:

e.g. factory, factory defaults

Searches on more than one word will be treated "as a

phrase".

The search engine will only find text exactly as entered:

e.g. enteringping will not find pinging and vice-versa

Use the asterisk (*) character for wildcard searches:

e.g.ping* will find ping and pinging

The search engine is not case-sensitive:

e.g. factory and Factory will return the same results.

Search


7/117

duction - Using the Reference Guide

//support.3com.com/infodeli/tools/switches/ss/fast/dha1730-0aaa02/htm/introduction/guide/useguide.htm[11/15/2010 2:49:48 PM]

n t roduc t i on

sing the Reference Guide

his section describes how to use the Reference Guide.

Introduction

Important information about the Reference Guide.

Conventions

A list of conventions that are used throughout the

Reference Guide.Sections

A breakdown of the Reference Guide into its various

sections.

Finding Your Way Around

Find out how the Reference Guide is organised and

how to navigate around it.

Related Documentation

Details about the other documentation that is

supplied with your Switch.

Your Comments

Instructions for sending feedback to 3Com about the

documentation that is supplied with your Switch.Copyright and Trademarks

Copyright and trademark information.


8/117

duction - Using the Web Management Interface

//support.3com.com/infodeli/tools/switches/ss/fast/dha1730-0aaa02/htm/introduction/web/useweb.htm[11/15/2010 2:49:51 PM]

n t roduc t i on

sing the Web Interface

his section describes how to access and use the Web Interface.

Accessing the Web Interface

Exiting the Web Interface

Understanding the Web InterfaceThe Banner

The Toolbar

The Navigation Tree

The Information Area

The Summary View

The Device View

The Help View

The Getting Started Pages


9/117

duction - Using the Command Line Interface

//support.3com.com/infodeli/tools/switches/ss/fast/dha1730-0aaa02/htm/introduction/cli/usecli.htm[11/15/2010 2:49:54 PM]

n t roduc t i on

sing the Command Line Interface

his section describes how to access and use the Command Line Interface.

Accessing the Command Line Interface

How Many Users Can Access the Command Line

Interface?

Exiting the Command Line Interface

Understanding the Command Line Interface

Entering Commands

Displaying Menus

Obtaining Help
http://-/?-http://-/?-http://-/?-http://-/?-http://-/?-http://-/?-http://history.go%28-1%29/


10/117

ort - Problem Solving

//support.3com.com/infodeli/tools/switches/ss/fast/dha1730-0aaa02/htm/support/problemsolving/problemsolving.htm[11/15/2010 2:49:56 PM]

Suppor t

roblem Solving

his section contains a list of known problems and suggested solutions. It covers the

ollowing topics:

Solving Web Interface Problems

Solving Command Line Interface Problems

Solving VLAN Problems

Solving SNMP Management Software ProblemsSolving Management Software Upgrade Problems

Solving Software Update Utility Problems

Solving Other Problems

f you have a problem that is not listed here and you cannot solve it, please refer to the

Com Knowledgebase Web Service:

ttp://knowledgebase.3com.com/
http://knowledgebase.3com.com/http://knowledgebase.3com.com/http://history.go%28-1%29/


11/117

port - Internet Support

//support.3com.com/infodeli/tools/switches/ss/fast/dha1730-0aaa02/htm/support/internet/internet.htm[11/15/2010 2:49:59 PM]

Suppor t

nternet Support

Com offers worldwide product support 24 hours a day, 7 days a week, through the

ollowing online systems:

W or ld W ide W eb Si t e

To access the latest networking information on the 3Com Corporation World Wide

Web site, enter this URL into your Web browser:

http://www.3com.com/

This service provides access to online support information such as technical

documentation and software, as well as support options that range from technical

education to maintenance and professional services.

3Com Know ledgebase Web Serv ice

This interactive tool contains technical product information compiled by 3Com

expert technical engineers around the globe. It is located on the World Wide Web

at:

http://knowledgebase.3com.com/

This service gives all 3Com customers and partners complementary, round-the-

clock access to technical information on most 3Com products.

3Com FTP Sit e

Download content across the Internet from the 3Com public FTP site. This service

is available 24 hours a day, 7 days a week.

To connect to the 3Com FTP site, enter the following information into your FTP

client:

Hostname: f tp .3com.com

Username: a n o n y m o u sPassword: < y o u r I n t e r n e t e - m a i l a d d r es s>

You do not need a user name and password with Web browser software such

as Netscape Navigator and Internet Explorer.
http://www.3com.com/http://knowledgebase.3com.com/http://knowledgebase.3com.com/http://www.3com.com/http://history.go%28-1%29/


12/117

ort - Email Support

//support.3com.com/infodeli/tools/switches/ss/fast/dha1730-0aaa02/htm/support/emailsupport/email.htm[11/15/2010 2:50:02 PM]

Suppor t

mail Support

ome 3Com regions offer an email support service. To access this service for your

egion, use the appropriate URL or email address from the list below.

Asia, Pac i f ic R im

From this region, email:

[email protected]

Europ e , Midd le East and A f r i ca

From this region, enter the URL:

http://emea.3com.com/support/email.html

L at i n A m e r i c a

Spanish speakers, enter the URL:

http://lat.3com.com/lat/support/form.html

Portuguese speakers, enter the URL:

http://lat.3com.com/br/support/form.html

English speakers, email:

[email protected]
mailto:[email protected]://emea.3com.com/support/email.htmlhttp://lat.3com.com/lat/support/form.htmlhttp://lat.3com.com/br/support/form.htmlmailto:[email protected]://support.3com.com/infodeli/tools/switches/ss/fast/dha1730-0aaa02/htm/support/emailsupport/internet.htmmailto:[email protected]://lat.3com.com/br/support/form.htmlhttp://lat.3com.com/lat/support/form.htmlhttp://emea.3com.com/support/email.htmlmailto:[email protected]://history.go%28-1%29/


13/117

ort - Telephone Support

//support.3com.com/infodeli/tools/switches/ss/fast/dha1730-0aaa02/htm/support/technicalsupport/technicalsupport.htm[11/15/2010 2:50:35 PM]

Suppor t

elephone Support

When you contact 3Com for assistance, have the following information ready:

Product model name, part number, and serial number

A list of system hardware and software, including revision levels

Diagnostic error messages

Details about recent configuration changes, if applicable

ere is a list of worldwide technical telephone support numbers. These numbers are

orrect at the time of publication. Refer to the 3Com Web site for updated information.

ou n t r y Teleph on e Nu m ber Cou n t r y Teleph on e Nu m ber

sia, Pacif ic Rim

ustralia

ong Kong

ndia

ndonesia

apan

alaysia

ew Zealand

akistan

1 800 678 515

800 933 486

+61 2 9424 5179 or

000800 650 1111

001 803 61009

00531 616 439 or

03 5977 79911800 801 777

0800 446 398

+61 2 9937 5083

Philippines

P.R. of China

Singapore

S. Korea

Taiwan

Thailand

1235 61 266 2602 or

+61 2 9937 5076

10800 61 00137 or

021 6350 1590 or

00800 0638 3266

800 6161 463

00798 611 2230 or02 3455 6455

00801 611 261

001 800 611 2000

uro pe, M idd le East an d A f r i ca

rom anywhere in

hese regions, call:

+44 (0)1442 435529

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

ustria

elgium (Flemish)

elgium (French)

enmark

inland

rance

ermany

ungary

reland

srael

taly

01 7956 7124

070 700 000

070 700 770

7010 7289

01080 2783

0825 809 622

01805 404 747

06800 14466

1800 509359

1800 943 2632

199 161346

Luxembourg

Netherlands

Norway

Poland

Portugal

South Africa

Spain

Sweden

Switzerland

U.K.

800 29880

0900 777 7737

815 33 047

00800 441 1357

707 200 123

0800 991196

9 021 60455

07711 14453

08488 50112

0870 241 3901

at i n A m er i ca

ntigua

rgentinaruba

ahamas

arbados

elize

ermuda

onaire

razil

ayman

hile

olombia

osta Rica

1 800 988 2112

0 810 444 3COM1 800 998 2112

1 800 998 2112

1 800 998 2112

52 5 201 0010

1 800 998 2112

1 800 998 2112

0800 13 3COM

1 800 998 2112

AT&T +800 998 2112

AT&T +800 998 2112

AT&T +800 998 2112

Guatemala

HaitiHonduras

Jamiaca

Martinique

Mexico

Nicaragua

Panama

Paraguay

Peru

Puerto RicoSalvador

Trinidad and Tobago

AT&T +800 998 2112

57 1 657 0888AT&T +800 998 2112

1 800 998 2112

571 657 0888

01 800 849CARE

AT&T +800 998 2112

AT&T +800 998 2112

54 11 4894 1888

AT&T +800 998 2112

1 800 998 2112

AT&T +800 998 2112

1 800 998 2112
http://www.3com.com/http://www.3com.com/http://history.go%28-1%29/


14/117

ort - Telephone Support

//support.3com.com/infodeli/tools/switches/ss/fast/dha1730-0aaa02/htm/support/technicalsupport/technicalsupport.htm[11/15/2010 2:50:35 PM]

uracao

cuador

ominican Republic

1 800 998 2112

AT&T +800 998 2112

AT&T +800 998 2112

Uruguay

Venezuela

Virgin Islands

AT&T +800 998 2112

AT&T +800 998 2112

57 1 657 0888

or th A m er i ca 1 800 876 3266

ou n t r y Teleph on e Nu m ber Cou n t r y Teleph on e Nu m ber


15/117

duction - Using the Reference Guide - Introduction

//support.3com.com/infodeli/tools/switches/ss/fast/dha1730-0aaa02/htm/introduction/guide/introduction.htm[11/15/2010 2:50:38 PM]

n t r odu ct i on


n t r oduct ion

he Reference Guide provides all the information you need to change the way a

uperStack 3 Switch unit works using management software.

he guide is intended for use by network administrators who are responsible for

nstalling and setting up network equipment; consequently, it assumes a basic workingnowledge of LANs (Local Area Networks).

If the information in the release notes that are shipped with your product differs

rom the information in this guide, follow the instructions in the release notes.

ost user guides and release notes are available in Adobe Acrobat Reader Portable

ocument Format (PDF) or HTML on the 3Com World Wide Web site:

ttp://www.3com.com/

ela ted Sect ions

onventions A list of conventions that are used throughout the ReferenceGuide

ections A breakdown of the Reference Guide into its various sections

inding Your Way Around Find out how the Reference Guide is organised and how to

navigate around it

elated Documentation Details about the other documentation that is supplied with

your Switch

our Comments Instructions for sending feedback to 3Com about the

documentation that is supplied with your Switch

opyright and

rademarks



16/117

duction - Using the Reference Guide - Conventions

//support.3com.com/infodeli/tools/switches/ss/fast/dha1730-0aaa02/htm/introduction/guide/conventions.htm[11/15/2010 2:50:40 PM]

n t rodu c t i on


onvent ions

he following tables list conventions that are used throughout the Reference Guide:

ot ice I cons

con Not ice Type Descr ip t ion

Information noteInformation that describes important features or

instructions.

CautionInformation 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.

ext Convent ions

onvent ion Descr ip t ion

creen displays This typeface represents information as it appears on the screen.

yntax

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

In this example, you must supply a password for .

ommands

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

he words enter

nd 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.

eyboard key names

If you must press two or more keys simultaneously, the keynames 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:


17/117

duction - Using the Reference Guide - Conventions

//support.3com.com/infodeli/tools/switches/ss/fast/dha1730-0aaa02/htm/introduction/guide/conventions.htm[11/15/2010 2:50:40 PM]

From the Help menu, select Contents.

Click OK.

ela ted Sect ions

ntroduction Important information about the Reference Guide



navigate around it


your Switch



opyright and

rademarks



18/117

duction - Using the Reference Guide - Sections

//support.3com.com/infodeli/tools/switches/ss/fast/dha1730-0aaa02/htm/introduction/guide/sections.htm[11/15/2010 2:50:43 PM]

n t r odu ct i on


ect ions

he Reference Guide is divided into the following sections:

Introduction

Using the Reference Guide

Learn how to use this Reference Guide.Using the Web Interface

Learn how to access and use the Web Interface.

Using the Command Line Interface

Learn how to access and use the Command Line Interface.

Command Line Interface

Learn about the Command Line Interface commands.

Web Interface

Learn about the Web Interface operations.

Support

Problem Solving

Find solutions to common problems.

Internet Support

Visit 3Com on the Internet.Email Support

Contact 3Com by email.

Telephone Support

Contact 3Com Technical Support.

Search

Search the Reference Guide by keyword.

ela ted Sect ions


onventions A list of conventions that are used throughout the Reference

Guide

inding Your Way Around Find out how the Reference Guide is organised and how tonavigate around it


your Switch



opyright and

rademarks



19/117

duction - Using the Reference Guide - General Navigation

//support.3com.com/infodeli/tools/switches/ss/fast/dha1730-0aaa02/htm/introduction/guide/findway.htm[11/15/2010 2:50:46 PM]

n t r o d u c t i o n

inding Your Way Around

enera l Nav igat ion

Back But t on - Takes you back to the previous page that you

visited. You can also use the Back button on your Web Browser to

do this.

Conten ts B u t ton - Takes you to the Contents page, which is the

first page that you see when the Reference Guide is opened.

B ack to Top bu t t on - Takes you to the top of the current page.

Re lated Sect i ons / Opera t i ons / Com m ands - Most reference

pages have a Related section at the bottom which contains links

to other associated pages. You can use these links to quickly

access related information.

av igat i ng t he CL I and W eb I n te r f ace Re fe rence P ages

You can navigate through the Web Interface

reference pages in two different ways.

V iew W eb I n te r f ace By O pera t i ons mirrors

the Navigation Tree in the Web Interface and

displays the same options. This is helpful if you

know which operation you want to find out

more about.

V iew W eb I n te r f ace By Task displays a list of

tasks that you can perform using the Web

Interface. This is helpful if you know what

specific task you want to find out more about.

You can navigate through the Command Line

Interface reference pages in two different ways.

V iew CL I B y Com m ands mirrors the structureof the Command Line Interface and displays the

same options. This is helpful if you know which

command you want to find out more about.

View CLI By Task displays a list of tasks that

you can perform using the Command Line

Interface. This is helpful if you know what

specific task you want to find out more about.

ela ted Sect ions



20/117

duction - Using the Reference Guide - General Navigation

//support.3com.com/infodeli/tools/switches/ss/fast/dha1730-0aaa02/htm/introduction/guide/findway.htm[11/15/2010 2:50:46 PM]


Guide



your Switch



opyright and

rademarks



21/117

duction - Using the Reference Guide - Related Documentation

//support.3com.com/infodeli/tools/switches/ss/fast/dha1730-0aaa02/htm/introduction/guide/documentation.htm[11/15/2010 2:50:49 PM]

n t r odu ct i on


ela ted Docum ent a t ion

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

Management Quick Reference Guide

This guide contains:

a list of the features supported by the Switcha summary of the web interface and command line interface commands for

the Switch.

Getting Started Guide

This guide contains:

all the information you need to install and set up the Switch in its default

state

information on how to access the management software to begin managing

the Switch.

Switch Implementation Guide

This guide provides management information with reference to product features

and network scenarios.

Release Notes

These notes provide information about the current software release, including newfeatures, modifications, and known problems.

here are other publications you may find useful:

Documentation accompanying the Advanced Redundant Power system.

Documentation accompanying 3Com Network Supervisor. This is supplied on the

CD-ROM that accompanies the Switch.

ela ted Sect ions



Guide



navigate around it



opyright and

rademarks



22/117

duction - Using the Reference Guide - Your Comments

//support.3com.com/infodeli/tools/switches/ss/fast/dha1730-0aaa02/htm/introduction/guide/comments.htm[11/15/2010 2:50:51 PM]

n t rodu c t i on


ou r Com m en t s

our suggestions are very important to us. They will help make our documentation more

seful to you. Please e-mail comments about this guide and the documentation that

ccompanies your Switch to 3Com at:

dd tech pub s_com m ent s@3com .com

lease include the following information when commenting:

Document title

Document part number (on the title page)

Page number (if appropriate) or the URL

xample:

Switch 4xxx Getting Started Guide

Part Number DUAxxxx-xAAA0x

Page 21

Please note that we can only respond to comments and questions about 3Com

roduct documentation at this e-mail address. Questions related to technical support or

ales should be directed in the first instance to your network supplier.

ela ted Sect ions



Guide



navigate around it

elated Documentation Details about the other documentation that is supplied withyour Switch

opyright and

rademarks

mailto:[email protected]?subject=Documentationmailto:[email protected]?subject=Documentationhttp://history.go%28-1%29/


23/117

duction - Using the Reference Guide - Copyright and Trademarks

//support.3com.com/infodeli/tools/switches/ss/fast/dha1730-0aaa02/htm/introduction/guide/trademarks.htm[11/15/2010 2:50:54 PM]



opy r i gh t and T radem arks

3 Com Te ch n o log ies, 2 0 0 2 . All rights reserved. No part of this documentation may

e reproduced in any form or by any means or used to make any derivative work (such

s translation, transformation, or adaptation) without permission from 3Com

echnologies.

Com Technologies reserves the right to revise this documentation and to make changes

n content from time to time without obligation on the part of 3Com Technologies to

rovide notification of such revision or change.

Com Technologies provides this documentation without warranty of any kind, either

mplied or expressed, including, but not limited to, the implied warranties of

merchantability and fitness for a particular purpose. 3Com may make improvements or

hanges in the product(s) and/or the program(s) described in this documentation at any

me.

NI TED STATES GOVERNMENT LEGENDS:

f you are a United States government agency, then this documentation and the

oftware described herein are provided to you subject to the following restricted rights:

or un i t s o f t h e D epar tm en t o f D e fense :

Restricted Rights Legend: Use, duplication or disclosure by the Government is subject to

estrictions as set forth in subparagraph (c) (1) (ii) for restricted Rights in Technical Data

nd Computer Software clause at 48 C.F.R. 52.227-7013. 3Com Centre, Boundary Way,

aylands Park South, Hemel Hempstead, Herts, HP2 7YU, U.K.

or c iv i l i an agenc ies :

Restricted Rights Legend: Use, reproduction or disclosure is subject to restrictions set

orth in subparagraph (a) through (d) of the Commercial Computer Software - Restricted

ights Clause at 48 C.F.R. 52.227-19 and the limitations set forth in 3Com Corporations

tandard commercial agreement for the software. Unpublished rights reserved under the

opyright laws of the United States.

f there is any software on removable media described in this documentation, it is

urnished under a license agreement included with the product as a separate document,

n the hard copy documentation, or on the removable media in a directory file named

cense.txt. If you are unable to locate a copy, please contact 3Com and a copy will be

rovided to you.

nless otherwise indicated, 3Com registered trademarks are registered in the United

tates and may or may not be registered in other countries.

Com and SuperStack are registered trademarks of 3Com Corporation.

ther brand and product names may be registered trademarks or trademarks of their

espective holders.

This [Licensee Product] contains Macromedia Flash Player software by

Macromedia, Inc., Copyright 1995-2002 Macromedia, Inc.

All rights reserved.

Macromedia and Flash are trademarks of Macromedia, Inc.

ela ted Sect ions



Guide


24/117

duction - Using the Reference Guide - Copyright and Trademarks

//support.3com.com/infodeli/tools/switches/ss/fast/dha1730-0aaa02/htm/introduction/guide/trademarks.htm[11/15/2010 2:50:54 PM]



navigate around it


your Switch




25/117

duction - Using the Web Management Interface - Accessing the Web Interface

//support.3com.com/infodeli/tools/switches/ss/fast/dha1730-0aaa02/htm/introduction/web/accessweb.htm[11/15/2010 2:50:57 PM]



ccessing t he W eb I n te r f ace

ou can access the web interface through the console port on your Switch or over the

etwork.

o access the web interface over the network, take the following steps:

1. Ensure that your network is correctly set up for management using the web

interface. For more information, see "Setting Up Web Interface Management" in the

Switch Getting Started Guide.

2. Open your Web browser.

3. In the Location field of the browser, enter the URL of the unit. This must be in the

format: http://nnn.nnn.nnn.nnn/ where nnn.nnn.nnn.nnn is the IP address of

the unit. When the browser has located the unit, a user name and password dialog

box is displayed.

If the user name and password dialog box is not displayed, seeSolving Web

Interface Problems.

4. Enter your user name and password:

If you have been assigned a user name and password, enter those details.

If you are accessing the web interface for the first time, enter a default user

name and password to match your access requirements. The defaults are

described in Logging in as a Default User in the Switch Getting Started

Guide. If you are setting up the unit for management, we suggest that you

log on as admin (which has no default password).

To prevent unauthorized configuration of the unit, we recommend that you change

the default passwords as soon as possible. To do this using the web interface, youneed to log in as each default user and then follow the steps described in

Changing Your Password.

If you forget your password while logging in to the web interface, see Solving

Web Interface Problems.

Once you have entered a correct user name and password, one of two events

occur:

If you are accessing the web interface for the first time, a set of Getting


26/117

duction - Using the Web Management Interface - Accessing the Web Interface

//support.3com.com/infodeli/tools/switches/ss/fast/dha1730-0aaa02/htm/introduction/web/accessweb.htm[11/15/2010 2:50:57 PM]

Started pages are displayed. These are described in Accessing the Getting

Started Pages.

If you have accessed the web interface before, the main web interface is

displayed. For information about the interface, see The Main Web Interface.

If you are unable to access the web interface, see Solving Web Interface

Problems.

While you are managing theunit, you can display other web pages using

your browser, and t hen simply use the Back button t o reload the webmanagement pages. You do not need to re-enter your username and

password.

ow M any U sers Can A ccess t h e W eb I n te r f ace?

he web interface can be accessed by any number of users at the same time.

x i t i ng t he W eb I n te r f ace

ou can exit the web interface at any time; to do this, close your Web browser. For

ecurity reasons, you should always close your Web browser after a management

ession.

ela ted Sect ions

nderstanding The Web Interface

The Banner

The Toolbar

The Navigation Tree


The Summary View

The Device View

The Help View

he Getting Started Pages


27/117

duction - Using the Web Management Interface - Understanding the Web Interface

//support.3com.com/infodeli/tools/switches/ss/fast/dha1730-0aaa02/htm/introduction/web/maininterface.htm[11/15/2010 2:51:00 PM]



n d er s t a n di n g t h e W e b I n t e r f a ce

he web manangement interface is made up of four areas:

The Banner

This is always displayed at the top of the browser window. It displays the name of

the current Switch. For more information, see The Banner.

The Toolbar

This is always displayed at the top of the browser window, underneath the Banner.

It contains three buttons which allow you to select different views in the View

Area. For more information, see The Toolbar.

The Nav iga t ion T reeThis is always displayed on the left side of the browser window. It contains various

icons which allow you to manage your network. For more information, see The

Navigation Tree.

Th e I n f o r m a t i o n A r e a

This is always displayed on the right side of the browser window. It contains

information about the managed network. For more information, see The

Information Area.

ela ted Sec t ions

ccessing the Web Interface

xiting the Web Interface

The BannerThe Toolbar

The Navigation Tree


The Summary View

The Device View

The Help View



28/117

duction - Using the Web Management Interface - Understanding the Web Interface

//support.3com.com/infodeli/tools/switches/ss/fast/dha1730-0aaa02/htm/introduction/web/maininterface.htm[11/15/2010 2:51:00 PM]


29/117


30/117

duction - Using the Web Management Interface - The Toolbar

//support.3com.com/infodeli/tools/switches/ss/fast/dha1730-0aaa02/htm/introduction/web/toolbar.htm[11/15/2010 2:51:05 PM]

n t rodu c t i on


he Toolbar

he Toolbar is always displayed at the top of the browser window, underneath the

anner. It contains three buttons which allow you to select different views:

Sum m ar y

Click the Summarybutton to display the Summary View. This view allows you to

update the latest summary information for the unit. For more information, see The

Summary View.

Device V iew

Click the Device View button to display the Device View. This view allows you to

perform configuration and monitoring on a system-wide, unit-wide or port-wide

basis. For more information, see The Device View.

Help

Click the Help button to display the Help view. This view allows you to access

additional information from the 3Com website and provides specification guidelines

for running the Web Interface. For more information, see The Help View.

ela ted Sec t ions




The Banner

The Navigation Tree


The Summary View

The Device View

The Help View



31/117

duction - Using the Web Management Interface - The Navigation Tree

//support.3com.com/infodeli/tools/switches/ss/fast/dha1730-0aaa02/htm/introduction/web/navigationtree.htm[11/15/2010 2:51:09 PM]



he Nav iga t ion T ree

he Navigation Tree is always displayed on the left side of the browser window. It is a

Windows Explorer-like interface that contains various icons which allow you to manage

our network.

y default, when you open the Web Interface, the Summary View is selected and the

avigation Tree is fully collapsed with only the top-level options displayed.

perations that you can perform to manage your network are grouped into folders within

he Navigation Tree in the Device View. You can also perform some operations by usinghe device mimic.

ingle-click the folders or the nodes (the plus and minus symbols) to expand and

ollapse the Navigation Tree.

Every option w ithin the Navigation Tree is selected by single-clicking t he left mouse

utton.

he following table shows the various Navigation Tree symbols and their associated

ehaviour:

Sy m bo l Beh av io r

Indicates that the next level of the Navigation Tree hierarchy iscurrently expanded. Click the symbol to collapse the next level. This

only affects the Navigation Tree no changes are made to the

Information Area.

Indicates that the next level of the Navigation Tree hierarchy is

currently collapsed. Click the symbol to expand the next level to its

last expanded state. This only affects the Navigation Tree no

changes are made to the Information Area.



32/117

duction - Using the Web Management Interface - The Navigation Tree

//support.3com.com/infodeli/tools/switches/ss/fast/dha1730-0aaa02/htm/introduction/web/navigationtree.htm[11/15/2010 2:51:09 PM]

currently expanded. Click the symbol to collapse the next level. This


Information Area.


currently collapsed. Click the symbol to expand the next level. This


Information Area.

Click the symbol to update the Information Area with the latest

summary information for the unit. This symbol is only available in theSummary View.

Click the symbol to perform an operation by opening a new window.

This only affects the Navigation Tree no changes are made to the

Information Area.

Click the symbol to open a Wizard in a new window. This only affects

the Navigation Tree no changes are made to the Information Area.

Click the symbol to update the Information Area with Summary and

device mimic information about the particular unit.

Click the symbol to launch a Help operation. This only affects theNavigation Tree no changes are made to the Information Area.

ela ted Sec t ions




The Banner

The Toolbar


The Summary ViewThe Device View

The Help View



33/117

duction - Using the Web Management Interface - The Information Area

//support.3com.com/infodeli/tools/switches/ss/fast/dha1730-0aaa02/htm/introduction/web/informationarea.htm[11/15/2010 2:51:12 PM]

n t r o d u ct i o n


h e I n fo rm a t i o n A rea

he Information Area is always displayed on the right side of the browser window. It

ontains information about the managed network.

f the Summary View is currently selected, a table is displayed which shows summary

nformation for the unit.

f the Device View is currently selected, the device mimic and the Device Summary table

re displayed.

f the Help View is currently selected, specification guidelines for running the Web

nterface are displayed.

ela ted Sect ions




The Banner

The Toolbar

The Navigation Tree

The Summary View

The Device View

The Help View



34/117

duction - Using the Web Management Interface - The Summary View

//support.3com.com/infodeli/tools/switches/ss/fast/dha1730-0aaa02/htm/introduction/web/summaryview.htm[11/15/2010 2:51:15 PM]



h e Su m m a r y V i e w

lick the Summarybutton on the Toolbar to access the Summary View.

lick the System icon in the Navigation Tree to update the Information Area with the

atest summary information for the unit.

he summary information is displayed in a series of tables:

Sy s t e m Su m m a r y

The first table is entitled System Summary and displays information for the unit. It

shows the System Name, Location, Contact and Up Time.

D e v i ce S u m m a r y

The subsequent table is entitled Device Summary: Unit 1. It displays information

for the manageable unit. It shows the Unit Name, Type, Software Version,

Hardware Version and IP Address.

The Summary View only displays information for the unit. You cannot perform any

perations from this view. You must use theDevice View to perform operations.

ela ted Sec t ions




The Banner

The Toolbar

The Navigation Tree


The Device View

The Help View



35/117

duction - Using the Web Management Interface - The Device View

//support.3com.com/infodeli/tools/switches/ss/fast/dha1730-0aaa02/htm/introduction/web/deviceview.htm[11/15/2010 2:51:18 PM]



he Device V iew

lick the Device Viewbutton on the Toolbar to access the Device View. This view allows

ou to perform configuration and monitoring on a system-wide, unit-wide or port-wide

asis.

or example purposes only, this graphic shows a Switch 4226.

he Device View Navigation Tree is displayed on the left side of the browser window and

llows you to perform all operations for the unit.

For more information about the operations that you can perform, see the Web

nterface - Operationspage.

he Device View Information Area is displayed on the right side of the browser and

ontains the device mimic and the Device Summary table.

ev ice Mim ic

or example purposes only, this graphic shows a Switch 4226.

he device mimic is an interactive representation of the currently selected unit. It is

eriodically updated to reflect changes in the unit, particularly changes made to the


36/117



tatus of its ports. You can perform certain operations by clicking on parts of the device

mimic called "hotspots" or get information about port by hovering your mouse over that

ort:

Por t H o tspo tsEach port on the mimic is a "hotpsot". Click a port to open a pop-up menu that

contains operations which you can launch for that particular port.

The operations are:

Setup

Statistics

Port Security

Por t Popups

Hover the mouse over a port on the mimic and a small tab with information about

that port will pop up. This tab contains the following information:

Port Number

Port Speed

Port Duplex

VLAN Membership

Conso le Por t Hotspot

The port labelled Console is a "hotpsot". Click anywhere on this area to open a

pop-up menu that contains operations which you can launch for the console port:

Setup

U n i t H o tspo t

The non-port area of the mimic is a "hotspot". Click anywhere on this area to open

a pop-up menu that contains operations which you can launch for the unit as a

whole.

The operations are:

Name

Notepad

History-1 Hour

History-48 Hours

Port Setup Summary

Setup

When two or more units are stacked the Port Hotspot menus for the ports connecting

he stack is replaced by the Unit Menu.

he device mimic also has four Controls, which are text areas that you can use to

ontrol the mimic and its appearance and to provide help information:

Po l li n g I n t e r v a l - Click this to set the rate at which the device mimic is

refreshed.

Pol l Now - Click this to refresh the screen now.

Disp lay F i l te r - Click this to control how the port status is displayed.

Color Key - Click this for an explanation of the symbols and colours on the

mimic's ports.

ev ice Sum m ary


37/117



series of tables entitled Device Summary: Unit X (where X is the Unit Number) display

nformation for each manageable unit. They show the Name, Type, Software Version,

ardware Version, IP Address, MAC Address, Boot Version, Product Number, Serial

umber and Up Time for each unit.

ela ted Sect ions




The Banner

The Toolbar

The Navigation Tree


The Summary View

The Help View



38/117

duction - Using the Web Management Interface - The Help View

//support.3com.com/infodeli/tools/switches/ss/fast/dha1730-0aaa02/htm/introduction/web/helpview.htm[11/15/2010 2:51:21 PM]



he He lp V iew

lick the Help button on the Toolbar to access the Help View. This view allows you to

ccess additional information from the 3Com website and provides specification

uidelines for running the Web Interface.

he Help View Navigation Tree contains four options that allow you to access additional

nformation from the 3Com website. Your management workstation must have access tohe World Wide Web for these options to work:

Click the Contactsicon to display contact information from the 3Com World Wide

Web site in a new browser window.

Click the Home Page icon to display the Home page of the 3Com World Wide Web

site in a new browser window.

Click the Library icon to display the Online Library of the 3Com World Wide Web

site in a new browser window.

Click the Support icon to display support information from the 3Com World Wide

Web site in a new browser window.

he Help View Information Area provides specification guidelines for running the Web

nterface. It is recommended that you access the Web Interface using the suggestedWeb Browsers and PC Platforms.

ela ted Sec t ions




The Banner

The Toolbar

The Navigation Tree


The Summary View

The Device Viewhe Getting Started Pages


39/117

Management Interface - System Getting Started

//support.3com.com/infodeli/tools/switches/ss/fast/dha1730-0aaa02/htmweb/gettingstarted.htm[11/15/2010 2:51:24 PM]

W e b I n t e r f ace

ystem Getting Started

he Get t i ng S ta r t ed Pages

When you access the web interface for the first time or after a power-off/on cycle, a set

f Getting Started pages are displayed. The Getting Started pages allow you to enter

asic setup information for the unit. The Getting Started pages are also available from

he main web interface at any time.

o access the Getting Started pages:

1. Click Device Viewon the Toolbar.

2. Select Sy s t e m - > Ge t t i n g S t a r t e d in the Navigation Tree. The first Getting

Started page is displayed.

s you go through the pages, you need to enter:

1. A descriptive name for the unit.

2. The physical location of the unit.

3. The name of a person to contact about the unit.

4. Whether you want to:

- manually configure IP information for the unit

- automatically configure IP information for the unit

- disable the LAN interface


40/117

Management Interface - System Getting Started

//support.3com.com/infodeli/tools/switches/ss/fast/dha1730-0aaa02/htmweb/gettingstarted.htm[11/15/2010 2:51:24 PM]

The Switch has three automatic IP configuration methods that it tries in turn,

these are: DHCP, Auto- IP and BOOTP. For detailed informat ion on how t he

automatic IP configuration process works, please refer to the Implementation

Guide that accompanies your Switch.

Automatic is the default setting for IP configuration. If you select Automatic IP

configuration, no further prompts are displayed.

If you choose to manually configure the IP information, you are prompted to enter

the following:

I P Ad d r e s s

Allows you to enter a unique IP address for the Switch.

If you change the IP address of the Switch, you can no longer access the web

interface unless you enter the new IP address in the Location Address field of your

browser.

Subnet Mask

Allows you to enter a subnet mask for the Switch.

D e f au l t G at e w a y ( r o u t e r )

If your network contains one or more gateways, this field allows you to enter theIP address of the default gateway.

5. If you selectNone, no further prompts are displayed.

6. A new password for the current user (enter the existing password if you want to

leave the password unchanged).


41/117

duction - Using the Command Line Interface - Accessing the Command Line Interface

//support.3com.com/infodeli/tools/switches/ss/fast/dha1730-0aaa02/htm/introduction/cli/accesscli.htm[11/15/2010 2:51:27 PM]



ccessing t he Com m and L ine I n te r f ace

o access the command line interface, take the following steps:

1. Set up your network for command line interface management; for more

information, see Setting Up Command Line Interface Management in the Switch

Getting Started Guide. The login sequence for the command line interface beginsas soon as a relevant Switch detects a connection to its console port, or as soon as

a Telnet session is started.

If the login sequence does not begin immediately, press the [Return] key a few

times until it does begin. If the sequence still does not begin, see Solving

Command Line Interface Problems.

2. At the login and password prompts, enter your user name and password:

If you have been assigned a user name and password, enter those details.

If you are accessing the command line interface for the first time, enter a

default user name and password to match your access requirements. Thedefaults are described in Logging in as a Default User in the Switch Getting

Started Guide. If you are setting up the unit for management, we suggest

that you log in as admin (which has no default password).

If you have logged on correctly, the top-level menu of the command line interface

is displayed as described in About the Interface Menus. If you have not logged on

correctly, the message Incorrect password. is displayed and the login sequence

starts again.

To prevent unauthorized configuration of the unit, we recommend that you

change the default passwords as soon as possible. To do th is using the command

line interface, you need to log in as each default user and then follow the stepsdescribed inChanging Your Password.

ow Many Users Can Access the Com m and L ine I n t er face?

f the unit is being managed using Telnet, the command line interface can be accessed

y any number of users at the same time.

x i t i ng t he Com m and L ine I n te r f ace

ou can exit the command line interface at any time; to do this, enter the command

ogout from the top level of the command line interface. If there is a period of inactivity

asting longer than 30 minutes, you are logged out of the command line interface

utomatically. After the exit, the first key that you press returns you to the login

equence.

ela ted Sect ions

nderstanding the Command Line Interface

Entering Commands

Displaying Menus

Obtaining Help
http://-/?-http://-/?-http://-/?-http://-/?-http://-/?-http://-/?-http://history.go%28-1%29/


42/117

duction - Using the Command Line Interface - Accessing the Command Line Interface

//support.3com.com/infodeli/tools/switches/ss/fast/dha1730-0aaa02/htm/introduction/cli/accesscli.htm[11/15/2010 2:51:27 PM]


43/117

duction - Using the Command Line Interface - Understanding the Command Line Interface

//support.3com.com/infodeli/tools/switches/ss/fast/dha1730-0aaa02/htm/introduction/cli/climenus.htm[11/15/2010 2:51:30 PM]



nderstand ing t he Com m and L ine I n te r f ace

nce you access the command line interface, the Top-level menu is displayed as shown

elow:

enu options: --------------3Com SuperStack 3 Switch 4200---------------bridge - Administer bridge-wide parametersgettingStarted - Basic device configurationlogout - Logout of the Command Line InterfacephysicalInterface - Administer physical interfacesprotocol - Administer protocolssecurity - Administer securitysystem - Administer system-level functionstrafficManagement - Administer traffic management

ype ? for help---------------------------------------- (1)---------------------------elect menu option:

he command line interface is made up of two areas:

The Menu Area Contains the current menu of commands. The menu can contain

commands to configure the unit or commands to display other menus in the

command line interface. Each command is accompanied by a brief description of itspurpose.

The Command Area Contains a Select menu option: prompt where you can

enter the commands displayed in the menu area.

rom the Top-level menu, you can access these sub-menus:

B r idge m enu

This menu contains commands that allow you to administer the bridging functions

of the Switch, such as link aggregation, multicast filtering, and VLANs.

Get t i ngS ta r ted com m and

This command allows you to enter the basic settings of the Switch. It is useful

when setting up the Switch for the first time or moving it to a new location.

L og o u t c om m a n dThis command logs you out of the Command Line Interface.

Phys i ca l I n te r f ace m enu

This menu contains commands that allow you to enable or disable the ports on the

unit, and view status information about them.

Pro toco l m enu

This menu contains commands that allow you to view and change IP-related

information for the unit and ping other devices in your network.

Secur i t y m enu

This menu contains commands that allow you to view and change security-related

information for the unit and the network.

Sys tem m enu

This menu contains commands that allow you to view and configure information

about the unit as a whole.

Tra f f icManagem en t m enu

This menu contains commands that allow you to administer quality of service.

nter ing Commands

he command area of the command line interface contains a Select menu option

rompt that allows you to enter the commands in the menu area.

Comm ands are not case- sensitiv e.

To en te r a s im p le com m and :


44/117

duction - Using the Command Line Interface - Understanding the Command Line Interface

//support.3com.com/infodeli/tools/switches/ss/fast/dha1730-0aaa02/htm/introduction/cli/climenus.htm[11/15/2010 2:51:30 PM]

At the prompt, enter the name of the command.

To en te r m u l t i p l e com m ands :

At the prompt, enter each command in succession. For example, to display the

summary information for the unit, enter:system summary

To en te r com m ands t ha t r equ i re va lues:

Append the values to the name of the command. For example, to update the

system name, enter:system management name

If you do not specify values for a command that requires them, you are prompted

to enter the values. At each prompt, the default value is displayed in brackets.To en te r abb rev ia ted com m ands :

At the prompt, enter enough characters to uniquely identify the commands. For

example, to update the system name, enter:sy m n

i sp lay ing Menus

here are several ways to display the menus in the command line interface menu

tructure:

To d i sp lay sub - m enus :

At the Select menu option prompt, enter the name of the menu or menus.

To d i sp lay pa ren t m enus :

At the Select menu option prompt, enter quit.To d i sp lay t he Top- l eve l m enu :

Press the [Esc] key.

bta in ing He lp

ou can access the command line interface help system at any time by entering ? at the

elect menu option prompt.

ela ted Sect ions

ccessing the Command Line Interface

ow Many Users Can Access the Command Line Interface?

xiting the Command Line Interface


45/117

ort - Problem Solving - Solving Web Interface Problems

//support.3com.com/infodeli/tools/switches/ss/fast/dha1730-0aaa02/htm/support/problemsolving/webproblems.htm[11/15/2010 2:51:33 PM]

Suppor t

roblem Solving

o l v i ng W eb I n te r f ace Prob lem s

W h a t i s t h e d e f a u lt I P a dd r e ss o f t h e Sw i t ch ?

H ow t o con f i gu re an I P add ress on you r Sw i t ch .

To manage a Switch using the web interface over a network, you mustset up the Switch with IP information.

To do this:

1. You must connect a terminal or terminal emulator to the console

port correctly. If you are connecting directly to the console port,

you need a standard null modem cable. The console port of the

Switch has a male 9-pin d-type connector. You can find pin-out

diagrams for both cables in the Getting Started Guide that

accompanies your Switch.

2. To connect the cable:

1. Attach the female connector on the cable to the male

connector on the console port of the Switch.

2. Connect the other end of the cable to your terminal,

terminal emulator, or modem.

3. Open a terminal emulator (such as HyperTerminal) with the

following settings:

baud rate 19200

8 data bits

no parity

1 stop bit

No Flow Control

VT100 Emulation

4. Login as admin with no password, or security with the password

security.

5. At the Top-level menu, enter:

protocol ip basicConfig

You will then be prompted for the following details:

Enter IP address [0.0.0.0]: Enter a valid IP address.

Enter subnet mask [0.0.0.0]: Enter a subnet mask, if

required.

Enter gateway ip address [0.0.0.0]:

6. Logout.


46/117



You should now be able to connect to the Switch via the web interface.

The W eb b row ser canno t access t he Sw i t ch ove r t he ne tw ork .

Ensure that, if you are managing the Switch over the network, remoteaccess to the management software of the Switch is enabled. For more

information, see Enabling and Disabling Remote Access.

The W eb b row ser can no l onger access t he Sw i t ch ove r t he

n e t w o r k .

Ensure that:

Remote access to the management software of the Switch is

enabled. For more information, see Enabling and Disabling

Remote Access.

The port through which you are trying to access the Switch is

enabled. For more information, see The Device View, or if the

port is enabled, check the connections and network cabling for

the port.

The port through which you are trying to manage the Switch

belongs to the Default VLAN (VLAN 1). This is the only VLAN that

can be used to access the management software of the Switch.

If there is still a problem, try accessing the Switch through a different

port. If you can now access the Switch, a problem may have occurred

with the original port. Contact your supplier for further advice.

Yo u f o r g e t t h e p a s sw o r d f o r t h e " a d m i n " u s er a cc ou n t a n d c a n n o

l o n g er p e r f or m i m p o r t a n t m a n a g em e n t o p e r at i o n s.

Use the password recovery method outlined below to define a newpassword for the "admin" user account:

1. Access the Command Line Interface and enter the user name

"recover" and password "recover" to place the Switch in password

recovery mode. The Switch remains in password recovery modefor a maximum of 30 seconds, before it returns to the CLI login

prompt.

2. Perform a hard reset on the Switch whilst it is in password

recovery mode by switching it off, waiting a few seconds, and

switching it on again.

If the Switch has a Redundant Power Supply (RPS) connected,

you will need to disconnect it in order to perform a hard reset.

You cannot use a soft reset operation to reset the passwordof the "admin" user account. This will end the password recovery

procedure and r eturn you to the CLI login prompt .

3. When the Switch has rebooted following the hard reset enter a

new password for the "admin" user account.

4. Enter enable to leave password recovery enabled. You are now

logged in as the default "admin" user.

CAUTI ON :If you disable Password Recovery for a Switch

and subsequently forget the password for the "admin" user


47/117



account, y ou wil l have to return the Switch to 3Com.

Password recovery can be enabled or disabled at any time by

accessing the CLI and using thesecurity device user pwdRecover

command.

Password recovery cannot be performed using a SLIP (Serial Line

Internet Protocol) connection.

Yo u f o r g e t y o u r p a ss w o r d a n d c a n n o t l o g i n .

You must ask a user with Security access level to log in to a Switch viathe Command Line Interface and change the password of your account.

They must use the security device user modify command to change

the password.

Som e o f t he w eb i n t e r f ace i s no t d i sp layed in t he W eb b row ser

a f t e r d o w n l o a d in g .

This is probably due to large amounts of traffic on the network. Eitherreload the web interface page, or click in the part of the interface that

has not displayed and select the reload frame option in your Web

browser.

The w eb i n t e r f ace responds sl ow l y t o com m ands .

This is probably due to large amounts of traffic on the network. Eitherreload the web interface page, or click in the part of the interface that

has not displayed and select the reload frame option in your Web

browser.

" U RL no t f ound" m essages a re d i sp layed w hen th e Con tac t s ,

H om e Page , Li b ra ry o r Suppor t i cons in t he H e lp V iew a re c l i cked .

Your management workstation cannot access the World Wide Web.Contact your network administrator.

ela ted Sect ions

olving Command Line Interface Problems

olving VLAN Problems

olving SNMP Management Software Problems

olving Management Software Upgrade Problems

olving Software Update Utility Problems

olving Other Problems


48/117

ort - Problem Solving - Solving Command Line Interface Problems

//support.3com.com/infodeli/tools/switches/ss/fast/dha1730-0aaa02/htm/support/problemsolving/cliproblems.htm[11/15/2010 2:51:37 PM]

Suppor t

roblem Solving

o l v i ng Com m and L ine I n te r f ace Prob lem s

W h a t i s t h e d e f a u lt I P a dd r e ss o f t h e Sw i t ch ?

H ow t o con f i gu re an I P add ress on you r Sw i t ch .

To manage a Switch using the command line interface over a networkusing Telnet, you must set up the Switch with IP information.

To do this:

1. You must connect a terminal or terminal emulator to the console

port correctly. If you are connecting directly to the console port,

you need a standard null modem cable. The console port of the

Switch has a male 9-pin d-type connector. You can find pin-out

diagrams for both cables in the Getting Started Guide that

accompanies your Switch.

2. To connect the cable:

1. Attach the female connector on the cable to the male

connector on the console port of the Switch.

2. Connect the other end of the cable to your terminal,

terminal emulator, or modem.

3. Open a terminal emulator (such as HyperTerminal) with the

following settings:

baud rate 19200

8 data bits

no parity

1 stop bit

No Flow Control

VT100 Emulation

4. Login as admin with no password, or security with the password

security.

5. At the Top-level menu, enter:

protocol ip basicConfig

You will then be prompted for the following details:

Enter IP address [0.0.0.0]: Enter a valid IP address.

Enter subnet mask [0.0.0.0]: Enter a subnet mask, if

required.

Enter gateway ip address [0.0.0.0]:

6. Logout.


49/117



You should now be able to connect to the Switch via Telnet.

You canno t access t he S w i t ch t h rou gh the conso le po r t .

If you are experiencing difficulties in accessing the switch via theconsole port, check that:

You are using a null modem cable as described in the Getting

Started Guide that accompanies your Switch.

The port settings on the terminal emulator (such asHyperTerminal) are set as follows:

baud rate 19200

8 data bits

no parity

1 stop bit

No Flow Control

VT100 Emulation

The correct COM port has been selected.

You have configured your Switch with IP information.

The te rm ina l o r t e rm ina l em u la to r canno t access t he Sw i t ch .

Ensure that, if you are managing the Switch over the network:


enabled.




If the User Name and Password login prompt still does not display,

reset the Switch.

The te rm ina l o r t e rm ina l em u la to r can no l onger access t he

Sw i t c h o v er t h e n e t w o r k .

Ensure that:


enabled.

The port through which you are trying to access the Switch has

not been disabled. If it is enabled, check the connections and

network cabling for the port.




If there is still a problem, try accessing the unit through a different

http://-/?-http://-/?-


50/117




The com m and l i ne i n te r f ace responds sl ow l y t o com m ands .

This is probably due to large amounts of traffic on the network. Logoutand then login to the command line interface.

Yo u f o r g e t t h e p a s sw o r d f o r t h e " a d m i n " u s er a cc ou n t a n d c a n n o

l o n g er p e r f or m i m p o r t a n t m a n a g em e n t o p e r at i o n s.

Use the password recovery method outlined below to define a new

password for the "admin" user account:

1. Access the Command Line Interface through the console port and

enter the user name "recover" and password "recover" to place

the Switch in password recovery mode. The Switch remains in

password recovery mode for a maximum of 30 seconds, before it

returns to the CLI login prompt.

2. Perform a hard reset on the Switch whilst it is in password

recovery mode by switching it off, waiting a few seconds, and

switching it on again.

If the Switch has a Redundant Power Supply (RPS) connected,you will need to disconnect it in order to perform a hard reset.

You cannot use a soft reset operation to reset the password

of the "admin" user account. This will end the password recovery

procedure and r eturn you to the CLI login prompt .

3. When the Switch has rebooted following the hard reset enter a

new password for the "admin" user account.

4. You are now logged in as the default "admin" user.

CAUTI ON :If you disable Password Recovery for a Switch

and subsequently forget the password for the "admin" user

account, y ou wil l have to return the Switch to 3Com.

Password recovery can be enabled or disabled at any time by

accessing the CLI and using thesecurity device user pwdRecover

command.

Password recovery cannot be perform ed via a SLIP (Serial Line

Internet Protocol) connection.

Yo u f o r g e t y o u r p a ss w o r d a n d c a n n o t l o g i n .

You must ask a user with Security access level to log in to a Switch viathe Command Line Interface and change the password of your account.

They must use the security device user modify command to change

the password.

ela ted Sect ions

olving Web Interface Problems




51/117







52/117

ort - Problem Solving - Solving VLAN Problems

//support.3com.com/infodeli/tools/switches/ss/fast/dha1730-0aaa02/htm/support/problemsolving/vlanproblems.htm[11/15/2010 2:51:40 PM]

Suppor t

roblem Solving

o lv ing VLAN Prob lems

N o t ra f f i c w i l l pass be tw een the V LA Ns , o r ends ta t i ons canno t

connect t o a se rve r on a d i f f e ren t V LAN .

To allow different VLANs on the same Switch to communicate with eachother, there are several different options, most of which use some form

of tagging.

The Switch supports 802.1q tagging. Both sides of the link,

however, must support tagging, so if you want endstations on

different VLANs to connect to a single server, then the Network

adapter card in the server must also support 802.1q tagging

(3Com's 3c980 server NIC supports this).

It is also possible to connect the Switch to a layer 3 Switch that

supports 802.1q tagging. This will enable you to provide VLAN

routing capabilities for the Switch.

For further details about configuring VLANs, refer to the Implementation

Guide that accompanies your Switch.

You have spec if i ed t h a t an ends ta t i on genera tes t r a f f i c t h a t has a

h i g h p r i o r i t y , b u t w h e n i t p a s se s t h r o u g h t h e n e t w o r k t h i s p r i o r i t y

i n fo rm a t i on i s l os t .

The endstation is attached to a Switch port using an untagged VLANconnection, and the Switch is removing the priority information when it

is forwarded to other untagged ports. To maintain the priority

information, specify that all untagged Switch ports use 802.1Q tagging.

For more information, see Adding a Port to a VLAN.

You have connected a Sw i t ch t o a dev i ce us ing an 802 .1Q tagged

l i nk , and you can no l onger access t he m anagem en t so f tw are o f

t he dev i ce o r t he dev i ces connected t o t ha t d ev i ce .

You may have connected to a device that only supports 802.1Q taggedlinks and have not specified that VLAN 1 traffic uses 802.1Q tagging.

Specify that VLAN 1 traffic is 802.1Q tagged, and try accessing the

devices again. For more information, see Adding a Port to a VLAN.

You have connec ted an ends ta t i on t h a t does no t suppor t I EEE

802 .1Q to t he Sw i t ch . W hen you speci f y t h a t t h e Sw i t ch po r t

be longs t o an un t agged V LA N , t he ends ta t i on does no t appear t o

be connected t o t ha t V LAN .

The port may have been placed in the VLAN using 802.1Q tagging, andthe Switch is only transmitting the VLAN traffic with 802.1Q tags.

Remove the 802.1Q tagging for the port, and try again. For moreinformation, see Adding a Port to a VLAN.

Your Sw i t ch shou ld be ope ra t i ng as an I GM P Quer i e r , bu t i t i s no t

s en d i n g q u e r y p a ck e t s t o t h e n e t w o r k .

Check that:

The Switch has a valid IP address. If it does not have a valid

address, change the IP address and re-enable IGMP Multicast

Learning.

Via the CLI :

Refer to the instructions for Enabling and Disabling IGMP


53/117

ort - Problem Solving - Solving VLAN Problems

//support.3com.com/infodeli/tools/switches/ss/fast/dha1730-0aaa02/htm/support/problemsolving/vlanproblems.htm[11/15/2010 2:51:40 PM]

Snooping.

V ia t he w eb i n te r f ace:

Refer to the instructions for Enabling or Disabling IGMP Multicast

Filtering.

The ports that you are using for IGMP Querying are in the Default

VLAN (VLAN 1). The Switch can only act as a querier in the

Default VLAN.

ela ted Sect ions








54/117

ort - Problem Solving - Solving SNMP Management Software Problems

//support.3com.com/infodeli/tools/switches/ss/fast/dha1730-0aaa02/htm/support/problemsolving/snmpproblems.htm[11/15/2010 2:51:44 PM]

Suppor t

roblem Solving

o l v i n g S NM P M a n a g em e n t So f t w a r e P r o b l e m s

T h e SN M P N et w o r k M a n a g em e n t So f t w a r e c a n n o t a c ce ss t h e

S w i t c h .

Check that:

The IP information for the Switch is correctly configured.

The Switch was reset after the IP information was defined.

The IP information for the Switch is correctly recorded by the

Network Management software. For more information, see the

documentation supplied with your Network Management software.

The community strings defined for the Switch are the same as

the ones defined in the Network Management software.


enabled.




T r a p s a r e n o t r e c ei v e d b y t h e SN M P N et w o r k M a n a g em e n t

s o f t w a r e .

Check that the IP information of the SNMP Network Managementsoftware is correctly recorded by the Switch.

T h e SN M P N et w o r k M a n a g em e n t s o f t w a r e c an n o l o n g e r a cc es s

t h e Sw i t c h .

Check that:

Remote access to the management software of the Switch has

not been disabled.

The port through which you are trying to access the Switch has

not been disabled. If it is enabled, check the connections and

network cabling for the port.

The port through which you are trying to manage the Switch has

not been moved from the Default VLAN (VLAN 1). This is the only

VLAN that can be used to access the management software of the

Switch.

If there is still a problem, try accessing the Switch through a different



ela ted Sec t ions






55/117

ort - Problem Solving - Solving SNMP Management Software Problems

//support.3com.com/infodeli/tools/switches/ss/fast/dha1730-0aaa02/htm/support/problemsolving/snmpproblems.htm[11/15/2010 2:51:44 PM]




56/117

ort - Problem Solving - Solving Management Software Upgrade Problems

//support.3com.com/infodeli/tools/switches/ss/fast/dha1730-0aaa02/htm/support/problemsolving/softwareupgradeproblems.htm[11/15/2010 2:51:47 PM]

Suppor t

roblem Solving

o l v i n g M a n a g em e n t So f t w a r e U p g r a d e Pr o b l e m s

H o w t o u p g r a d e t h e so f t w a r e o f y o u r Sw i t c h .

Refer to the instructions for Upgrading Management Software.

A m a n a g e m e n t s o f t w a r e u p g r a d e h a s f ai l e d , a n d t h e Po w e r On

Se l f Tes t ( POST) has fa i l ed .

T h e Po w e r / Se l f T e st L ED i s y e l l o w .

A l l o f t he Por t S ta t us LEDs a re Of f .

You canno t access the Swi t ch v ia Te lne t .

Refer to the instructions for recovering the Switch from a failedsoftware upgrade using the Software Update Utility.

Y ou h a v e a t t e m p t e d t o u p g r a d e t h e u n i t u s i n g TFT P, a n d i t f a i l s t o

u p g r a d e .

Take the following steps:

1. Ensure that the unit has:

Its default IP address (0.0.0.0)

o r

A valid IP address that is in the same subnet as the TFTP

server

2. If the unit has the IP address 0.0.0.0, ensure that the unit has a

valid IP address that is in the same subnet as the TFTP server.

3. Attempt the upgrade again.

ela ted Sec t ions








57/117

ort - Problem Solving - Solving Serial Update Utility Problems

//support.3com.com/infodeli/tools/switches/ss/fast/dha1730-0aaa02/htm/support/problemsolving/softwareupdateproblems.htm[11/15/2010 2:51:50 PM]

Suppor t

roblem Solving

o l v i n g So f t w a r e U p d a t e U t i l i t y P r o b l e m s

A n e r r o r o c cu r s w h e n t h e S of t w a r e U p d at e u t i l i t y a t t e m p t s t o

c om m u n i ca t e w i t h t h e Sw i t c h .

There could be a number of reasons for this:

The Switch is not being powered-up within 5 seconds of pressingReturn.

The serial port being used is not the same as the serial port

specified in the upgrade command. Retry the command ensuring

that you specify the correct serial port.

Also ensure that the serial cable which you are using is a fully

wired cable with handshaking signals. The Software Update utility

only works with this type of serial cable. The cable which you use

to manage the Switch through the terminal may not have

handshaking signals and may therefore not be compatible with

the upgrade utility. Refer to the PC-AT Serial Cable pin-out

diagram in Appendix B of the Getting Started Guide thataccompanies your Switch.

The null modem cable is not connected to the console port of the

Switch.

The null modem cable is not connected to the serial port of the

PC, or, the serial port being used is not the same as the serial

port specified in the upgrade command.

The Switch is not being powered-down and up as directed.

Make sure the serial port is not in use by another application,

such as a background hot sync process used by PDAs.

Retry the command ensuring that you follow all the steps.

A n e r r o r o c cu r s w h e n t h e S of t w a r e U p d at e u t i l i t y a t t e m p t s t o

o p en t h e m a n ag e m e n t s o f t w a r e f i le f o r r e a d in g .

There could be two reasons for this:

The file specified in the software update command does not exist

or is in a different directory to the one given. Check the filename

and its location.

You do not have read access for the file. Check the properties of

the file using Explorer (in Windows 95) or File Manager (in otherversions of Windows).

A n e r r o r o c cu r s w h e n t h e S of t w a r e U p d at e U t i li t y a t t e m p t s t o

t r a n s f e r t h e f i l e.

There could be a number of reasons for this:

The null modem cable has become disconnected from the Switch

or the PC during the file transfer. Reconnect the cable and start

again.


58/117

ort - Problem Solving - Solving Serial Update Utility Problems

//support.3com.com/infodeli/tools/switches/ss/fast/dha1730-0aaa02/htm/support/problemsolving/softwareupdateproblems.htm[11/15/2010 2:51:50 PM]

Power to the Switch has been disrupted during the file transfer.

Check the power connection to the Switch and start again.

An incorrect file is being specified and transferred to the Switch.

Check the filenames and start again.

For more information about solving Software Update Utility problems, see the online

elp section contained within the Software Update Utility.

ela ted Sec t ions








59/117

ort - Problem Solving - Solving Other Problems

//support.3com.com/infodeli/tools/switches/ss/fast/dha1730-0aaa02/htm/support/problemsolving/otherproblems.htm[11/15/2010 2:51:53 PM]

Suppor t

roblem Solving

o lv ing Other P rob lem s

You have added the S w i t ch t o an a lr eady busy ne tw ork , and

response t im es and t r a f f i c l eve l s have i nc reased .

You may have added a group of users to one of the Switch ports via ahub, and not disabled half duplex flow control for the port. Disable half

duplex flow control for all ports that are operating in half duplex andare connected to multiple devices using a hub.

Via the CLI :

Refer to the instructions for Specifying the Speed and Duplex Mode.

V ia t he w eb i n te r f ace:

Refer to the instructions for Configuring Ports.

You h ave enab led au to - nego t i a t i on f o r a 10B A SE-T / 100B A SE-TX

por t , and you a re see ing a la rge num ber o f l a te even ts on t he

p o r t .

The por

Documents

3com Switch Management Guide c02616745