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ents
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duction
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Interface - Operations
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mand Line Interface - Commands
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agement Interface Reference Guide - Support
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ch the Reference Guide
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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
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duction - Using the Reference Guide
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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.
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duction - Using the Web Management Interface
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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
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duction - Using the Command Line Interface
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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
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ort - Problem Solving
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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/
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port - Internet Support
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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.
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ort - Email Support
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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:
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:
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%29/7/31/2019 3com Switch Management Guide c02616745
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ort - Telephone Support
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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
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ort - Telephone Support
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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
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duction - Using the Reference Guide - Introduction
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n t r odu ct i on
sing the Reference Guide
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
Copyright and trademark information.
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duction - Using the Reference Guide - Conventions
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n t rodu c t i on
sing the Reference Guide
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:
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duction - Using the Reference Guide - Conventions
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From the Help menu, select Contents.
Click OK.
ela ted Sect ions
ntroduction Important information about the Reference Guide
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
Copyright and trademark information.
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duction - Using the Reference Guide - Sections
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n t r odu ct i on
sing the Reference Guide
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
ntroduction Important information about the Reference Guide
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
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
Copyright and trademark information.
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duction - Using the Reference Guide - General Navigation
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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
ntroduction Important information about the Reference Guide
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duction - Using the Reference Guide - General Navigation
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onventions A list of conventions that are used throughout the Reference
Guide
ections A breakdown of the Reference Guide into its various sections
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
Copyright and trademark information.
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duction - Using the Reference Guide - Related Documentation
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n t r odu ct i on
sing the Reference Guide
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
ntroduction Important information about the Reference Guide
onventions A list of conventions that are used throughout the Reference
Guide
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
our Comments Instructions for sending feedback to 3Com about the
documentation that is supplied with your Switch
opyright and
rademarks
Copyright and trademark information.
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duction - Using the Reference Guide - Your Comments
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n t rodu c t i on
sing the Reference Guide
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
ntroduction Important information about the Reference Guide
onventions A list of conventions that are used throughout the Reference
Guide
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 withyour Switch
opyright and
rademarks
Copyright and trademark information.
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duction - Using the Reference Guide - Copyright and Trademarks
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n t r o d u c t i o n
sing the Reference Guide
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
ntroduction Important information about the Reference Guide
onventions A list of conventions that are used throughout the Reference
Guide
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duction - Using the Reference Guide - Copyright and Trademarks
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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
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duction - Using the Web Management Interface - Accessing the Web Interface
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n t r o d u c t i o n
sing the Web Interface
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
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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 Information Area
The Summary View
The Device View
The Help View
he Getting Started Pages
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n t r o d u c t i o n
sing the Web Interface
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 Information Area
The Summary View
The Device View
The Help View
he Getting Started Pages
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n t rodu c t i on
sing the Web Interface
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
ccessing the Web Interface
xiting the Web Interface
nderstanding The Web Interface
The Banner
The Navigation Tree
The Information Area
The Summary View
The Device View
The Help View
he Getting Started Pages
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n t r o d u c t i o n
sing the Web Interface
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.
Indicates that the next level of the Navigation Tree hierarchy is
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currently 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. This
only affects the Navigation Tree no changes are made to the
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
ccessing the Web Interface
xiting the Web Interface
nderstanding The Web Interface
The Banner
The Toolbar
The Information Area
The Summary ViewThe Device View
The Help View
he Getting Started Pages
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n t r o d u ct i o n
sing the Web Interface
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
ccessing the Web Interface
xiting the Web Interface
nderstanding The Web Interface
The Banner
The Toolbar
The Navigation Tree
The Summary View
The Device View
The Help View
he Getting Started Pages
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n t r o d u c t i o n
sing the Web Interface
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
ccessing the Web Interface
xiting the Web Interface
nderstanding The Web Interface
The Banner
The Toolbar
The Navigation Tree
The Information Area
The Device View
The Help View
he Getting Started Pages
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n t r o d u c t i o n
sing the Web Interface
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
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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
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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
ccessing the Web Interface
xiting the Web Interface
nderstanding The Web Interface
The Banner
The Toolbar
The Navigation Tree
The Information Area
The Summary View
The Help View
he Getting Started Pages
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n t r o d u c t i o n
sing the Web Interface
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
ccessing the Web Interface
xiting the Web Interface
nderstanding The Web Interface
The Banner
The Toolbar
The Navigation Tree
The Information Area
The Summary View
The Device Viewhe Getting Started Pages
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Management Interface - System Getting Started
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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
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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).
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n t r o d u c t i o n
sing the Command Line Interface
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
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n t r o d u c t i o n
sing the Command Line Interface
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 :
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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
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ort - Problem Solving - Solving Web Interface Problems
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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.
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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
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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
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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.
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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:
Remote access to the management software of the Switch is
enabled.
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 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:
Remote access to the management software of the Switch is
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.
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 unit through a different
port. If you can now access the Switch, a problem may have occurred
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with the original port. Contact your supplier for further advice.
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
olving VLAN Problems
olving SNMP Management Software Problems
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ort - Problem Solving - Solving Command Line Interface Problems
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olving Management Software Upgrade Problems
olving Software Update Utility Problems
olving Other Problems
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ort - Problem Solving - Solving VLAN Problems
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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
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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
olving Web Interface Problems
olving Command Line Interface Problems
olving SNMP Management Software Problems
olving Management Software Upgrade Problems
olving Software Update Utility Problems
olving Other Problems
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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.
Remote access to the management software of the Switch is
enabled.
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.
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
port. If you can now access the Switch, a problem may have occurred
with the original port. Contact your supplier for further advice.
ela ted Sec t ions
olving Web Interface Problems
olving Command Line Interface Problems
olving VLAN Problems
olving Management Software Upgrade Problems
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ort - Problem Solving - Solving SNMP Management Software Problems
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olving Software Update Utility Problems
olving Other Problems
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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
olving Web Interface Problems
olving Command Line Interface Problems
olving VLAN Problems
olving SNMP Management Software Problems
olving Software Update Utility Problems
olving Other Problems
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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.
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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
olving Web Interface Problems
olving Command Line Interface Problems
olving VLAN Problems
olving SNMP Management Software Problems
olving Management Software Upgrade Problems
olving Other Problems
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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
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