manual 3com 4200 super stack

Contents

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Introduction

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

Web Interface - Operations

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

Command Line Interface - Commands

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

Management Interface Reference Guide - Support

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Search the Reference Guide

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Search

Search 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 defaultsSearches on more than one word will be treated "as aphrase".The search engine will only find text exactly as entered:e.g. entering ping will not find pinging and vice-versaUse the asterisk (*) character for wildcard searches:e.g. ping* will find ping and pingingThe search engine is not case-sensitive:e.g. factory and Factory will return the same results.

Introduction - Using the Reference Guide

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Introduction

Using the Reference Guide This section describes how to use the Reference Guide. Introduction

Important information about the Reference Guide.ConventionsA list of conventions that are used throughout theReference Guide.SectionsA breakdown of the Reference Guide into its varioussections.Finding Your Way AroundFind out how the Reference Guide is organised andhow to navigate around it. Related DocumentationDetails about the other documentation that issupplied with your Switch.Your CommentsInstructions for sending feedback to 3Com about thedocumentation that is supplied with your Switch.Copyright and TrademarksCopyright and trademark information.

Introduction - Using the Web Management Interface

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Introduction

Using the Web Interface This section describes how to access and use the Web Interface. Accessing the Web Interface

Exiting the Web Interface

Understanding the Web InterfaceThe BannerThe ToolbarThe Navigation TreeThe Information AreaThe Summary ViewThe Device ViewThe Help View

The Getting Started Pages

Introduction - Using the Command Line Interface

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Introduction

Using the Command Line Interface This section describes how to access and use the Command Line Interface. Accessing the Command Line Interface

How Many Users Can Access the Command LineInterface?

Exiting the Command Line Interface

Understanding the Command Line InterfaceEntering CommandsDisplaying MenusObtaining Help

Support - Problem Solving

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Support

Problem Solving This section contains a list of known problems and suggested solutions. It covers thefollowing topics: Solving Web Interface Problems

Solving Command Line Interface ProblemsSolving VLAN ProblemsSolving SNMP Management Software ProblemsSolving Management Software Upgrade ProblemsSolving Software Update Utility ProblemsSolving Other Problems

If you have a problem that is not listed here and you cannot solve it, please refer to the3Com Knowledgebase Web Service:

http://knowledgebase.3com.com/

Support - Internet Support

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Support

Internet Support 3Com offers worldwide product support 24 hours a day, 7 days a week, through thefollowing online systems:

World Wide Web SiteTo access the latest networking information on the 3Com Corporation World WideWeb site, enter this URL into your Web browser:

http://www.3com.com/

This service provides access to online support information such as technicaldocumentation and software, as well as support options that range from technicaleducation to maintenance and professional services.

3Com Knowledgebase Web ServiceThis interactive tool contains technical product information compiled by 3Comexpert technical engineers around the globe. It is located on the World Wide Webat:

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 SiteDownload content across the Internet from the 3Com public FTP site. This serviceis available 24 hours a day, 7 days a week.

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

Hostname: ftp.3com.comUsername: anonymousPassword:

You do not need a user name and password with Web browser software suchas Netscape Navigator and Internet Explorer.

Support - Email Support

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Support

Email Support Some 3Com regions offer an email support service. To access this service for yourregion, use the appropriate URL or email address from the list below.

Asia, Pacific RimFrom this region, email:[email protected]

Europe, Middle East and AfricaFrom this region, enter the URL:http://emea.3com.com/support/email.html

Latin AmericaSpanish 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]

Support - Telephone Support

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Support

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

Product model name, part number, and serial numberA list of system hardware and software, including revision levelsDiagnostic error messagesDetails about recent configuration changes, if applicable

Here is a list of worldwide technical telephone support numbers. These numbers arecorrect at the time of publication. Refer to the 3Com Web site for updated information.

Country Telephone Number Country Telephone Number Asia, Pacific RimAustraliaHong KongIndia

IndonesiaJapan

MalaysiaNew ZealandPakistan

1 800 678 515800 933 486+61 2 9424 5179 or000800 650 1111001 803 6100900531 616 439 or03 5977 79911800 801 7770800 446 398+61 2 9937 5083

Philippines

P.R. of China

SingaporeS. Korea

TaiwanThailand

1235 61 266 2602 or+61 2 9937 507610800 61 00137 or021 6350 1590 or00800 0638 3266800 6161 46300798 611 2230 or02 3455 645500801 611 261001 800 611 2000

Europe, Middle East and AfricaFrom anywhere inthese regions, call:

+44 (0)1442 435529

From the following countries, you may use the numbers shown: AustriaBelgium (Flemish)Belgium (French)Denmark Finland France Germany HungaryIrelandIsraelItaly

01 7956 7124070 700 000070 700 7707010 728901080 27830825 809 62201805 404 74706800 144661800 5093591800 943 2632199 161346

LuxembourgNetherlandsNorwayPolandPortugalSouth AfricaSpainSweden SwitzerlandU.K.

800 298800900 777 7737815 33 04700800 441 1357707 200 1230800 9911969 021 6045507711 1445308488 501120870 241 3901

Latin AmericaAntiguaArgentinaArubaBahamasBarbadosBelizeBermudaBonaireBrazilCaymanChileColombiaCosta Rica

1 800 988 21120 810 444 3COM1 800 998 21121 800 998 21121 800 998 211252 5 201 00101 800 998 21121 800 998 21120800 13 3COM1 800 998 2112AT&T +800 998 2112AT&T +800 998 2112AT&T +800 998 2112

GuatemalaHaitiHondurasJamiacaMartiniqueMexicoNicaraguaPanamaParaguayPeruPuerto RicoSalvadorTrinidad and Tobago

AT&T +800 998 211257 1 657 0888AT&T +800 998 21121 800 998 2112571 657 088801 800 849CAREAT&T +800 998 2112AT&T +800 998 211254 11 4894 1888AT&T +800 998 21121 800 998 2112AT&T +800 998 21121 800 998 2112

Support - Telephone Support

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CuracaoEcuadorDominican Republic

1 800 998 2112AT&T +800 998 2112AT&T +800 998 2112

UruguayVenezuelaVirgin Islands

AT&T +800 998 2112AT&T +800 998 211257 1 657 0888

North America 1 800 876 3266 Country Telephone Number Country Telephone Number

Introduction - Using the Reference Guide - Introduction

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Introduction

Using the Reference Guide Introduction

The Reference Guide provides all the information you need to change the way aSuperStack 3 Switch unit works using management software.

The guide is intended for use by network administrators who are responsible forinstalling and setting up network equipment; consequently, it assumes a basic workingknowledge of LANs (Local Area Networks).

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

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

http://www.3com.com/Related Sections

Conventions A list of conventions that are used throughout the ReferenceGuide

Sections A breakdown of the Reference Guide into its various sectionsFinding Your Way Around Find out how the Reference Guide is organised and how to

navigate around itRelated Documentation Details about the other documentation that is supplied with

your SwitchYour Comments Instructions for sending feedback to 3Com about the

documentation that is supplied with your SwitchCopyright and Trademarks

Copyright and trademark information.

Introduction - Using the Reference Guide - Conventions

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Introduction

Using the Reference Guide Conventions

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

Notice Icons

Icon Notice Type Description

Information note Information that describes important features orinstructions.

Caution Information that alerts you to potential loss of data orpotential damage to an application, system, or device.

Warning Information that alerts you to potential personal injury.

Text Conventions

Convention Description Screen displays This typeface represents information as it appears on the screen. Syntax

The word syntax means that you must evaluate the syntaxprovided and then supply the appropriate values for theplaceholders 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 .

Commands

The word command means that you must enter the commandexactly as shown and then press Return or Enter. Commandsappear in bold. Example:

To display port information, enter the following command:

bridge port detail The words enterand type

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

Keyboard 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 thetext.Identify menu names, menu commands, and softwarebutton names. Examples:

Introduction - Using the Reference Guide - Conventions

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From the Help menu, select Contents.

Click OK.

Related Sections

Introduction Important information about the Reference GuideSections A breakdown of the Reference Guide into its various sectionsFinding Your Way Around Find out how the Reference Guide is organised and how to





Introduction - Using the Reference Guide - Sections

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Introduction

Using the Reference Guide Sections

The Reference Guide is divided into the following sections:

IntroductionUsing the Reference GuideLearn how to use this Reference Guide.Using the Web Interface Learn how to access and use the Web Interface.Using the Command Line InterfaceLearn how to access and use the Command Line Interface.

Command Line InterfaceLearn about the Command Line Interface commands.Web InterfaceLearn about the Web Interface operations.Support

Problem SolvingFind solutions to common problems.Internet SupportVisit 3Com on the Internet.Email SupportContact 3Com by email.Telephone SupportContact 3Com Technical Support.

SearchSearch the Reference Guide by keyword.

Related Sections

Introduction Important information about the Reference GuideConventions A list of conventions that are used throughout the Reference

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





Introduction - Using the Reference Guide - General Navigation

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Introduction

Finding Your Way Around General Navigation

Back Button - Takes you back to the previous page that youvisited. You can also use the Back button on your Web Browser todo this.

Contents Button - Takes you to the Contents page, which is thefirst page that you see when the Reference Guide is opened.

Back to Top button - Takes you to the top of the current page.

Related Sections/Operations/Commands - Most referencepages have a Related section at the bottom which contains linksto other associated pages. You can use these links to quicklyaccess related information.

Navigating the CLI and Web Interface Reference Pages

You can navigate through the Web Interfacereference pages in two different ways. View Web Interface By Operations mirrorsthe Navigation Tree in the Web Interface anddisplays the same options. This is helpful if youknow which operation you want to find outmore about. View Web Interface By Task displays a list oftasks that you can perform using the WebInterface. This is helpful if you know whatspecific task you want to find out more about.

You can navigate through the Command LineInterface reference pages in two different ways.View CLI By Commands mirrors the structureof the Command Line Interface and displays thesame options. This is helpful if you know whichcommand you want to find out more about. View CLI By Task displays a list of tasks thatyou can perform using the Command LineInterface. This is helpful if you know whatspecific task you want to find out more about.

Related Sections

Introduction Important information about the Reference Guide

Introduction - Using the Reference Guide - General Navigation

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Conventions A list of conventions that are used throughout the ReferenceGuide

Sections A breakdown of the Reference Guide into its various sectionsRelated Documentation Details about the other documentation that is supplied with




Introduction - Using the Reference Guide - Related Documentation

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Introduction

Using the Reference Guide Related Documentation

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

Management Quick Reference GuideThis guide contains:

a list of the features supported by the Switcha summary of the web interface and command line interface commands forthe Switch.

Getting Started Guide This guide contains:

all the information you need to install and set up the Switch in its defaultstateinformation on how to access the management software to begin managingthe Switch.

Switch Implementation GuideThis guide provides management information with reference to product featuresand network scenarios.Release Notes These notes provide information about the current software release, including newfeatures, modifications, and known problems.

There are other publications you may find useful:

Documentation accompanying the Advanced Redundant Power system.Documentation accompanying 3Com Network Supervisor. This is supplied on theCD-ROM that accompanies the Switch.

Related Sections


GuideSections A breakdown of the Reference Guide into its various sectionsFinding Your Way Around Find out how the Reference Guide is organised and how to

navigate around itYour Comments Instructions for sending feedback to 3Com about the



Introduction - Using the Reference Guide - Your Comments

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Introduction

Using the Reference Guide Your Comments

Your suggestions are very important to us. They will help make our documentation moreuseful to you. Please e-mail comments about this guide and the documentation thataccompanies your Switch to 3Com at:

[email protected]

Please include the following information when commenting:

Document titleDocument part number (on the title page)Page number (if appropriate) or the URL

Example:

Switch 4xxx Getting Started GuidePart Number DUAxxxx-xAAA0xPage 21

Please note that we can only respond to comments and questions about 3Comproduct documentation at this e-mail address. Questions related to technical support orsales should be directed in the first instance to your network supplier.

Related Sections


GuideSections A breakdown of the Reference Guide into its various sectionsFinding Your Way Around Find out how the Reference Guide is organised and how to


your SwitchCopyright and Trademarks


Introduction - Using the Reference Guide - Copyright and Trademarks

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Introduction

Using the Reference Guide Copyright and Trademarks

3Com Technologies, 2002. All rights reserved. No part of this documentation maybe reproduced in any form or by any means or used to make any derivative work (suchas translation, transformation, or adaptation) without permission from 3ComTechnologies.

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

3Com Technologies provides this documentation without warranty of any kind, eitherimplied or expressed, including, but not limited to, the implied warranties ofmerchantability and fitness for a particular purpose. 3Com may make improvements orchanges in the product(s) and/or the program(s) described in this documentation at anytime.

UNITED STATES GOVERNMENT LEGENDS:If you are a United States government agency, then this documentation and thesoftware described herein are provided to you subject to the following restricted rights:

For units of the Department of Defense: Restricted Rights Legend: Use, duplication or disclosure by the Government is subject torestrictions as set forth in subparagraph (c) (1) (ii) for restricted Rights in Technical Dataand Computer Software clause at 48 C.F.R. 52.227-7013. 3Com Centre, Boundary Way,Maylands Park South, Hemel Hempstead, Herts, HP2 7YU, U.K.

For civilian agencies:Restricted Rights Legend: Use, reproduction or disclosure is subject to restrictions setforth in subparagraph (a) through (d) of the Commercial Computer Software - RestrictedRights Clause at 48 C.F.R. 52.227-19 and the limitations set forth in 3Com Corporationsstandard commercial agreement for the software. Unpublished rights reserved under thecopyright laws of the United States.

If there is any software on removable media described in this documentation, it isfurnished under a license agreement included with the product as a separate document,in the hard copy documentation, or on the removable media in a directory file namedlicense.txt. If you are unable to locate a copy, please contact 3Com and a copy will beprovided to you.

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

3Com and SuperStack are registered trademarks of 3Com Corporation.

Other brand and product names may be registered trademarks or trademarks of theirrespective holders.

This [Licensee Product] contains Macromedia Flash Player software byMacromedia, Inc., Copyright 1995-2002 Macromedia, Inc.All rights reserved.Macromedia and Flash are trademarks of Macromedia, Inc.

Related Sections


Guide

Introduction - Using the Reference Guide - Copyright and Trademarks

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Sections A breakdown of the Reference Guide into its various sectionsFinding Your Way Around Find out how the Reference Guide is organised and how to



documentation that is supplied with your Switch

Introduction - Using the Web Management Interface - Accessing the Web Interface

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Introduction

Using the Web Interface Accessing the Web Interface

You can access the web interface through the console port on your Switch or over thenetwork.

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

1. Ensure that your network is correctly set up for management using the webinterface. For more information, see "Setting Up Web Interface Management" in theSwitch 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 theformat: http://nnn.nnn.nnn.nnn/ where nnn.nnn.nnn.nnn is the IP address ofthe unit. When the browser has located the unit, a user name and password dialogbox is displayed.

If the user name and password dialog box is not displayed, see Solving WebInterface 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 username and password to match your access requirements. The defaults aredescribed in Logging in as a Default User in the Switch Getting StartedGuide. If you are setting up the unit for management, we suggest that youlog on as admin (which has no default password).

To prevent unauthorized configuration of the unit, we recommend that you changethe 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 inChanging Your Password.

If you forget your password while logging in to the web interface, see SolvingWeb Interface Problems.

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

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

Introduction - Using the Web Management Interface - Accessing the Web Interface

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Started pages are displayed. These are described in Accessing the GettingStarted Pages.If you have accessed the web interface before, the main web interface isdisplayed. For information about the interface, see The Main Web Interface.

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

While you are managing the unit, you can display other web pages usingyour browser, and then simply use the Back button to reload the webmanagement pages. You do not need to re-enter your username andpassword.

How Many Users Can Access the Web Interface?

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

Exiting the Web Interface

You can exit the web interface at any time; to do this, close your Web browser. Forsecurity reasons, you should always close your Web browser after a managementsession.

Related Sections

Understanding The Web Interface

The BannerThe ToolbarThe Navigation TreeThe Information AreaThe Summary ViewThe Device ViewThe Help View


Introduction - Using the Web Management Interface - Understanding the Web Interface

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Introduction

Using the Web Interface Understanding the Web Interface

The web manangement interface is made up of four areas:

The BannerThis is always displayed at the top of the browser window. It displays the name ofthe current Switch. For more information, see The Banner.The ToolbarThis 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 ViewArea. For more information, see The Toolbar.The Navigation TreeThis is always displayed on the left side of the browser window. It contains variousicons which allow you to manage your network. For more information, see TheNavigation Tree.The Information AreaThis is always displayed on the right side of the browser window. It containsinformation about the managed network. For more information, see TheInformation Area.

Related Sections

Accessing the Web InterfaceExiting the Web Interface

The BannerThe ToolbarThe Navigation TreeThe Information AreaThe Summary ViewThe Device ViewThe Help View


Introduction - Using the Web Management Interface - Understanding the Web Interface

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Introduction - Using the Web Management Interface - The Banner

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Introduction

Using the Web Interface The Banner

The Banner is always displayed at the top of the browser window. It displays the 3Comlogo and 3Com product name.

Related Sections

Accessing the Web InterfaceExiting the Web InterfaceUnderstanding The Web Interface

The ToolbarThe Navigation TreeThe Information AreaThe Summary ViewThe Device ViewThe Help View


Introduction - Using the Web Management Interface - The Toolbar

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Introduction

Using the Web Interface The Toolbar

The Toolbar is always displayed at the top of the browser window, underneath theBanner. It contains three buttons which allow you to select different views:

SummaryClick the Summary button to display the Summary View. This view allows you toupdate the latest summary information for the unit. For more information, see TheSummary View.

Device ViewClick the Device View button to display the Device View. This view allows you toperform configuration and monitoring on a system-wide, unit-wide or port-widebasis. For more information, see The Device View.

HelpClick the Help button to display the Help view. This view allows you to accessadditional information from the 3Com website and provides specification guidelinesfor running the Web Interface. For more information, see The Help View.

Related Sections


The Banner The Navigation TreeThe Information AreaThe Summary ViewThe Device ViewThe Help View


Introduction - Using the Web Management Interface - The Navigation Tree

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Introduction

Using the Web Interface The Navigation Tree

The Navigation Tree is always displayed on the left side of the browser window. It is aWindows Explorer-like interface that contains various icons which allow you to manageyour network.

By default, when you open the Web Interface, the Summary View is selected and theNavigation Tree is fully collapsed with only the top-level options displayed.

Operations that you can perform to manage your network are grouped into folders withinthe Navigation Tree in the Device View. You can also perform some operations by usingthe device mimic.

Single-click the folders or the nodes (the plus and minus symbols) to expand andcollapse the Navigation Tree.

Every option within the Navigation Tree is selected by single-clicking the left mousebutton.

The following table shows the various Navigation Tree symbols and their associatedbehaviour:

Symbol Behavior

Indicates that the next level of the Navigation Tree hierarchy iscurrently expanded. Click the symbol to collapse the next level. Thisonly affects the Navigation Tree no changes are made to theInformation Area.

Indicates that the next level of the Navigation Tree hierarchy iscurrently collapsed. Click the symbol to expand the next level to itslast expanded state. This only affects the Navigation Tree nochanges are made to the Information Area.

Indicates that the next level of the Navigation Tree hierarchy is

Introduction - Using the Web Management Interface - The Navigation Tree

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currently expanded. Click the symbol to collapse the next level. Thisonly affects the Navigation Tree no changes are made to theInformation Area.

Indicates that the next level of the Navigation Tree hierarchy iscurrently collapsed. Click the symbol to expand the next level. Thisonly affects the Navigation Tree no changes are made to theInformation Area.

Click the symbol to update the Information Area with the latestsummary 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 theInformation Area.

Click the symbol to open a Wizard in a new window. This only affectsthe Navigation Tree no changes are made to the Information Area. Click the symbol to update the Information Area with Summary anddevice 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.

Related Sections


The BannerThe ToolbarThe Information AreaThe Summary ViewThe Device ViewThe Help View


Introduction - Using the Web Management Interface - The Information Area

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Introduction

Using the Web Interface The Information Area

The Information Area is always displayed on the right side of the browser window. Itcontains information about the managed network.

If the Summary View is currently selected, a table is displayed which shows summaryinformation for the unit.

If the Device View is currently selected, the device mimic and the Device Summary tableare displayed.

If the Help View is currently selected, specification guidelines for running the WebInterface are displayed.

Related Sections


The BannerThe ToolbarThe Navigation TreeThe Summary ViewThe Device ViewThe Help View


Introduction - Using the Web Management Interface - The Summary View

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Introduction

Using the Web Interface The Summary View

Click the Summary button on the Toolbar to access the Summary View.

Click the System icon in the Navigation Tree to update the Information Area with thelatest summary information for the unit.

The summary information is displayed in a series of tables:

System SummaryThe first table is entitled System Summary and displays information for the unit. Itshows the System Name, Location, Contact and Up Time.Device SummaryThe subsequent table is entitled Device Summary: Unit 1. It displays informationfor 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 anyoperations from this view. You must use the Device View to perform operations.

Related Sections


The BannerThe ToolbarThe Navigation TreeThe Information Area The Device ViewThe Help View


Introduction - Using the Web Management Interface - The Device View

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Introduction

Using the Web Interface The Device View

Click the Device View button on the Toolbar to access the Device View. This view allowsyou to perform configuration and monitoring on a system-wide, unit-wide or port-widebasis.

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

The Device View Navigation Tree is displayed on the left side of the browser window andallows you to perform all operations for the unit.

For more information about the operations that you can perform, see the WebInterface - Operations page.

The Device View Information Area is displayed on the right side of the browser andcontains the device mimic and the Device Summary table.

Device Mimic

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

The device mimic is an interactive representation of the currently selected unit. It isperiodically updated to reflect changes in the unit, particularly changes made to the



status of its ports. You can perform certain operations by clicking on parts of the devicemimic called "hotspots" or get information about port by hovering your mouse over thatport:

Port HotspotsEach port on the mimic is a "hotpsot". Click a port to open a pop-up menu thatcontains operations which you can launch for that particular port.The operations are:

SetupStatisticsPort Security

Port PopupsHover the mouse over a port on the mimic and a small tab with information aboutthat port will pop up. This tab contains the following information:

Port NumberPort SpeedPort DuplexVLAN Membership

Console Port HotspotThe port labelled Console is a "hotpsot". Click anywhere on this area to open apop-up menu that contains operations which you can launch for the console port:

Setup

Unit HotspotThe non-port area of the mimic is a "hotspot". Click anywhere on this area to opena pop-up menu that contains operations which you can launch for the unit as awhole.The operations are:

NameNotepadHistory-1 HourHistory-48 HoursPort Setup SummarySetup

When two or more units are stacked the Port Hotspot menus for the ports connectingthe stack is replaced by the Unit Menu.

The device mimic also has four Controls, which are text areas that you can use tocontrol the mimic and its appearance and to provide help information:

Polling Interval - Click this to set the rate at which the device mimic isrefreshed.Poll Now - Click this to refresh the screen now.Display Filter - Click this to control how the port status is displayed.Color Key - Click this for an explanation of the symbols and colours on themimic's ports.

Device Summary



A series of tables entitled Device Summary: Unit X (where X is the Unit Number) displayinformation for each manageable unit. They show the Name, Type, Software Version,Hardware Version, IP Address, MAC Address, Boot Version, Product Number, SerialNumber and Up Time for each unit.

Related Sections


The BannerThe ToolbarThe Navigation TreeThe Information AreaThe Summary ViewThe Help View


Introduction - Using the Web Management Interface - The Help View

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

Introduction

Using the Web Interface The Help View

Click the Help button on the Toolbar to access the Help View. This view allows you toaccess additional information from the 3Com website and provides specificationguidelines for running the Web Interface.

The Help View Navigation Tree contains four options that allow you to access additionalinformation from the 3Com website. Your management workstation must have access tothe World Wide Web for these options to work:

Click the Contacts icon to display contact information from the 3Com World WideWeb site in a new browser window.Click the Home Page icon to display the Home page of the 3Com World Wide Website in a new browser window.Click the Library icon to display the Online Library of the 3Com World Wide Website in a new browser window.Click the Support icon to display support information from the 3Com World WideWeb site in a new browser window.

The Help View Information Area provides specification guidelines for running the WebInterface. It is recommended that you access the Web Interface using the suggestedWeb Browsers and PC Platforms.

Related Sections


The BannerThe ToolbarThe Navigation TreeThe Information AreaThe Summary ViewThe Device View


Web Management Interface - System Getting Started

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Web Interface

System Getting Started The Getting Started Pages

When you access the web interface for the first time or after a power-off/on cycle, a setof Getting Started pages are displayed. The Getting Started pages allow you to enterbasic setup information for the unit. The Getting Started pages are also available fromthe main web interface at any time.

To access the Getting Started pages:

1. Click Device View on the Toolbar.

2. Select System -> Getting Started in the Navigation Tree. The first GettingStarted page is displayed.

As 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

Web Management Interface - System Getting Started

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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 information on how theautomatic IP configuration process works, please refer to the ImplementationGuide that accompanies your Switch.

Automatic is the default setting for IP configuration. If you select Automatic IPconfiguration, no further prompts are displayed.

If you choose to manually configure the IP information, you are prompted to enterthe following:

IP AddressAllows 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 webinterface unless you enter the new IP address in the Location Address field of yourbrowser.

Subnet MaskAllows you to enter a subnet mask for the Switch.

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

5. If you select None, no further prompts are displayed.

6. A new password for the current user (enter the existing password if you want toleave the password unchanged).

Introduction - Using the Command Line Interface - Accessing the Command Line Interface

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Introduction

Using the Command Line Interface Accessing the Command Line Interface

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

1. Set up your network for command line interface management; for moreinformation, see Setting Up Command Line Interface Management in the SwitchGetting 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 asa Telnet session is started.

If the login sequence does not begin immediately, press the [Return] key a fewtimes until it does begin. If the sequence still does not begin, see SolvingCommand 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 adefault user name and password to match your access requirements. Thedefaults are described in Logging in as a Default User in the Switch GettingStarted Guide. If you are setting up the unit for management, we suggestthat you log in as admin (which has no default password).

If you have logged on correctly, the top-level menu of the command line interfaceis displayed as described in About the Interface Menus. If you have not logged oncorrectly, the message Incorrect password. is displayed and the login sequencestarts again.

To prevent unauthorized configuration of the unit, we recommend that youchange the default passwords as soon as possible. To do this using the commandline interface, you need to log in as each default user and then follow the stepsdescribed in Changing Your Password.

How Many Users Can Access the Command Line Interface?

If the unit is being managed using Telnet, the command line interface can be accessedby any number of users at the same time.

Exiting the Command Line Interface

You can exit the command line interface at any time; to do this, enter the commandlogout from the top level of the command line interface. If there is a period of inactivitylasting longer than 30 minutes, you are logged out of the command line interfaceautomatically. After the exit, the first key that you press returns you to the loginsequence.

Related Sections

Understanding the Command Line Interface

Entering CommandsDisplaying MenusObtaining Help

Introduction - Using the Command Line Interface - Accessing the Command Line Interface

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Introduction - Using the Command Line Interface - Understanding the Command Line Interface

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Introduction

Using the Command Line Interface Understanding the Command Line Interface

Once you access the command line interface, the Top-level menu is displayed as shownbelow:

Menu options: --------------3Com SuperStack 3 Switch 4200--------------- bridge - Administer bridge-wide parameters gettingStarted - Basic device configuration logout - Logout of the Command Line Interface physicalInterface - Administer physical interfaces protocol - Administer protocols security - Administer security system - Administer system-level functions trafficManagement - Administer traffic management Type ? for help----------------------------------------- (1)---------------------------Select menu option: The command line interface is made up of two areas:

The Menu Area Contains the current menu of commands. The menu can containcommands to configure the unit or commands to display other menus in thecommand line interface. Each command is accompanied by a brief description of itspurpose.The Command Area Contains a Select menu option: prompt where you canenter the commands displayed in the menu area.

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

Bridge menuThis menu contains commands that allow you to administer the bridging functionsof the Switch, such as link aggregation, multicast filtering, and VLANs.GettingStarted commandThis command allows you to enter the basic settings of the Switch. It is usefulwhen setting up the Switch for the first time or moving it to a new location.Logout commandThis command logs you out of the Command Line Interface.PhysicalInterface menu This menu contains commands that allow you to enable or disable the ports on theunit, and view status information about them.Protocol menu This menu contains commands that allow you to view and change IP-relatedinformation for the unit and ping other devices in your network.Security menu This menu contains commands that allow you to view and change security-relatedinformation for the unit and the network.System menu This menu contains commands that allow you to view and configure informationabout the unit as a whole.TrafficManagement menuThis menu contains commands that allow you to administer quality of service.

Entering Commands

The command area of the command line interface contains a Select menu optionprompt that allows you to enter the commands in the menu area.

Commands are not case-sensitive.

To enter a simple command:

Introduction - Using the Command Line Interface - Understanding the Command Line Interface

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At the prompt, enter the name of the command.To enter multiple commands: At the prompt, enter each command in succession. For example, to display thesummary information for the unit, enter: system summaryTo enter commands that require values: Append the values to the name of the command. For example, to update thesystem name, enter:system management name If you do not specify values for a command that requires them, you are promptedto enter the values. At each prompt, the default value is displayed in brackets.To enter abbreviated commands:At the prompt, enter enough characters to uniquely identify the commands. Forexample, to update the system name, enter:sy m n

Displaying Menus

There are several ways to display the menus in the command line interface menustructure:

To display sub-menus:At the Select menu option prompt, enter the name of the menu or menus.To display parent menus:At the Select menu option prompt, enter quit.To display the Top-level menu: Press the [Esc] key.

Obtaining Help

You can access the command line interface help system at any time by entering ? at theSelect menu option prompt.

Related Sections

Accessing the Command Line InterfaceHow Many Users Can Access the Command Line Interface?Exiting the Command Line Interface

Support - Problem Solving - Solving Web Interface Problems

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

Support

Problem Solving Solving Web Interface Problems

What is the default IP address of the Switch?How to configure an IP address on your Switch.

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 consoleport correctly. If you are connecting directly to the console port,you need a standard null modem cable. The console port of theSwitch has a male 9-pin d-type connector. You can find pin-outdiagrams for both cables in the Getting Started Guide thataccompanies your Switch.

2. To connect the cable:

1. Attach the female connector on the cable to the maleconnector 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 thefollowing 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 passwordsecurity.

5. At the Top-level menu, enter:

protocol ip basicConfigYou 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, ifrequired.

Enter gateway ip address [0.0.0.0]:

6. Logout.



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

The Web browser cannot access the Switch over the network.

Ensure that, if you are managing the Switch over the network, remoteaccess to the management software of the Switch is enabled. For moreinformation, see Enabling and Disabling Remote Access.

The Web browser can no longer access the Switch over thenetwork.

Ensure that:

Remote access to the management software of the Switch isenabled. For more information, see Enabling and DisablingRemote Access.

The port through which you are trying to access the Switch isenabled. For more information, see The Device View, or if theport is enabled, check the connections and network cabling forthe port.

The port through which you are trying to manage the Switchbelongs to the Default VLAN (VLAN 1). This is the only VLAN thatcan be used to access the management software of the Switch.

If there is still a problem, try accessing the Switch through a differentport. If you can now access the Switch, a problem may have occurredwith the original port. Contact your supplier for further advice.

You forget the password for the "admin" user account and can nolonger perform important management operations.

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

2. Perform a hard reset on the Switch whilst it is in passwordrecovery mode by switching it off, waiting a few seconds, andswitching 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 recoveryprocedure and return you to the CLI login prompt.

3. When the Switch has rebooted following the hard reset enter anew password for the "admin" user account.

4. Enter enable to leave password recovery enabled. You are nowlogged in as the default "admin" user.

CAUTION: If you disable Password Recovery for a Switchand subsequently forget the password for the "admin" user



account, you will have to return the Switch to 3Com.

Password recovery can be enabled or disabled at any time byaccessing the CLI and using the security device user pwdRecovercommand.

Password recovery cannot be performed using a SLIP (Serial LineInternet Protocol) connection.

You forget your password and cannot log in.

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 changethe password.

Some of the web interface is not displayed in the Web browserafter downloading.

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 thathas not displayed and select the reload frame option in your Webbrowser.

The web interface responds slowly to commands.

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 thathas not displayed and select the reload frame option in your Webbrowser.

"URL not found" messages are displayed when the Contacts,Home Page, Library or Support icons in the Help View are clicked.

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

Related Sections

Solving Command Line Interface ProblemsSolving VLAN ProblemsSolving SNMP Management Software ProblemsSolving Management Software Upgrade ProblemsSolving Software Update Utility ProblemsSolving Other Problems

Support - Problem Solving - Solving Command Line Interface Problems

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

Support

Problem Solving Solving Command Line Interface Problems

What is the default IP address of the Switch?How to configure an IP address on your Switch.

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 consoleport correctly. If you are connecting directly to the console port,you need a standard null modem cable. The console port of theSwitch has a male 9-pin d-type connector. You can find pin-outdiagrams for both cables in the Getting Started Guide thataccompanies your Switch.

2. To connect the cable:

1. Attach the female connector on the cable to the maleconnector 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 thefollowing 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 passwordsecurity.

5. At the Top-level menu, enter:

protocol ip basicConfigYou 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, ifrequired.

Enter gateway ip address [0.0.0.0]:

6. Logout.



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

You cannot access the Switch through the console port.

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 GettingStarted 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 terminal or terminal emulator cannot access the Switch.

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

Remote access to the management software of the Switch isenabled.


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

The terminal or terminal emulator can no longer access theSwitch over the network.

Ensure that:


The port through which you are trying to access the Switch hasnot been disabled. If it is enabled, check the connections andnetwork cabling for the port.


If there is still a problem, try accessing the unit through a differentport. If you can now access the Switch, a problem may have occurred



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

The command line interface responds slowly to commands.

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

You forget the password for the "admin" user account and can nolonger perform important management operations.

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

1. Access the Command Line Interface through the console port andenter the user name "recover" and password "recover" to placethe Switch in password recovery mode. The Switch remains inpassword recovery mode for a maximum of 30 seconds, before itreturns to the CLI login prompt.

2. Perform a hard reset on the Switch whilst it is in passwordrecovery mode by switching it off, waiting a few seconds, andswitching 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 recoveryprocedure and return you to the CLI login prompt.

3. When the Switch has rebooted following the hard reset enter anew password for the "admin" user account.

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

CAUTION: If you disable Password Recovery for a Switchand subsequently forget the password for the "admin" useraccount, you will have to return the Switch to 3Com.

Password recovery can be enabled or disabled at any time byaccessing the CLI and using the security device user pwdRecovercommand.

Password recovery cannot be performed via a SLIP (Serial LineInternet Protocol) connection.

You forget your password and cannot log in.

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 changethe password.

Related Sections

Solving Web Interface ProblemsSolving VLAN ProblemsSolving SNMP Management Software Problems



Solving Management Software Upgrade ProblemsSolving Software Update Utility ProblemsSolving Other Problems

Support - Problem Solving - Solving VLAN Problems

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

Support

Problem Solving Solving VLAN Problems

No traffic will pass between the VLANs, or endstations cannotconnect to a server on a different VLAN.

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

The Switch supports 802.1q tagging. Both sides of the link,however, must support tagging, so if you want endstations ondifferent VLANs to connect to a single server, then the Networkadapter 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 thatsupports 802.1q tagging. This will enable you to provide VLANrouting capabilities for the Switch.

For further details about configuring VLANs, refer to the ImplementationGuide that accompanies your Switch.

You have specified that an endstation generates traffic that has ahigh priority, but when it passes through the network this priorityinformation is lost.

The endstation is attached to a Switch port using an untagged VLANconnection, and the Switch is removing the priority information when itis forwarded to other untagged ports. To maintain the priorityinformation, specify that all untagged Switch ports use 802.1Q tagging.For more information, see Adding a Port to a VLAN.

You have connected a Switch to a device using an 802.1Q taggedlink, and you can no longer access the management software ofthe device or the devices connected to that device.

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

You have connected an endstation that does not support IEEE802.1Q to the Switch. When you specify that the Switch portbelongs to an untagged VLAN, the endstation does not appear tobe connected to that VLAN.

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 Switch should be operating as an IGMP Querier, but it is notsending query packets to the network.

Check that:

The Switch has a valid IP address. If it does not have a validaddress, change the IP address and re-enable IGMP MulticastLearning.

Via the CLI:Refer to the instructions for Enabling and Disabling IGMP

Support - Problem Solving - Solving VLAN Problems

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Snooping.

Via the web interface:Refer to the instructions for Enabling or Disabling IGMP MulticastFiltering.

The ports that you are using for IGMP Querying are in the DefaultVLAN (VLAN 1). The Switch can only act as a querier in theDefault VLAN.

Related Sections

Solving Web Interface ProblemsSolving Command Line Interface ProblemsSolving SNMP Management Software ProblemsSolving Management Software Upgrade ProblemsSolving Software Update Utility ProblemsSolving Other Problems

Support - Problem Solving - Solving SNMP Management Software Problems

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

Support

Problem Solving Solving SNMP Management Software Problems

The SNMP Network Management Software cannot access theSwitch.

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 theNetwork Management software. For more information, see thedocumentation supplied with your Network Management software.

The community strings defined for the Switch are the same asthe ones defined in the Network Management software.



Traps are not received by the SNMP Network Managementsoftware.

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

The SNMP Network Management software can no longer accessthe Switch.

Check that:

Remote access to the management software of the Switch hasnot been disabled.

The port through which you are trying to access the Switch hasnot been disabled. If it is enabled, check the connections andnetwork cabling for the port.

The port through which you are trying to manage the Switch hasnot been moved from the Default VLAN (VLAN 1). This is the onlyVLAN that can be used to access the management software of theSwitch.

If there is still a problem, try accessing the Switch through a differentport. If you can now access the Switch, a problem may have occurredwith the original port. Contact your supplier for further advice.

Related Sections

Solving Web Interface ProblemsSolving Command Line Interface ProblemsSolving VLAN ProblemsSolving Management Software Upgrade Problems

Support - Problem Solving - Solving SNMP Management Software Problems

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

Solving Software Update Utility ProblemsSolving Other Problems

Support - Problem Solving - Solving Management Software Upgrade Problems

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

Support

Problem Solving Solving Management Software Upgrade Problems

How to upgrade the software of your Switch.

Refer to the instructions for Upgrading Management Software.

A management software upgrade has failed, and the PowerOnSelf Test (POST) has failed.The Power/Self Test LED is yellow.All of the Port Status LEDs are Off.You cannot access the Switch via Telnet.

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

You have attempted to upgrade the unit using TFTP, and it fails toupgrade.

Take the following steps:

1. Ensure that the unit has:

Its default IP address (0.0.0.0)

or

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

2. If the unit has the IP address 0.0.0.0, ensure that the unit has avalid IP address that is in the same subnet as the TFTP server.

3. Attempt the upgrade again.

Related Sections

Solving Web Interface ProblemsSolving Command Line Interface ProblemsSolving VLAN ProblemsSolving SNMP Management Software ProblemsSolving Software Update Utility ProblemsSolving Other Problems

Support - Problem Solving - Solving Serial Update Utility Problems

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

Support

Problem Solving Solving Software Update Utility Problems

An error occurs when the Software Update utility attempts tocommunicate with the Switch.

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 portspecified in the upgrade command. Retry the command ensuringthat you specify the correct serial port.

Also ensure that the serial cable which you are using is a fullywired cable with handshaking signals. The Software Update utilityonly works with this type of serial cable. The cable which you useto manage the Switch through the terminal may not havehandshaking signals and may therefore not be compatible withthe upgrade utility. Refer to the PC-AT Serial Cable pin-outdiagram in Appendix B of the Getting Started Guide thataccompanies your Switch.

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

The null modem cable is not connected to the serial port of thePC, or, the serial port being used is not the same as the serialport 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.

An error occurs when the Software Update utility attempts toopen the management software file for reading.

There could be two reasons for this:

The file specified in the software update command does not existor is in a different directory to the one given. Check the filenameand its location.

You do not have read access for the file. Check the properties ofthe file using Explorer (in Windows 95) or File Manager (in otherversions of Windows).

An error occurs when the Software Update Utility attempts totransfer the file.

There could be a number of reasons for this:

The null modem cable has become disconnected from the Switchor the PC during the file transfer. Reconnect the cable and startagain.

Support - Problem Solving - Solving Serial Update Utility Problems

http://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 onlinehelp section contained within the Software Update Utility.

Related Sections

Solving Web Interface ProblemsSolving Command Line Interface ProblemsSolving VLAN ProblemsSolving SNMP Management Software ProblemsSolving Management Software Upgrade ProblemsSolving Other Problems

Support - Problem Solving - Solving Other Problems

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

Support

Problem Solving Solving Other Problems

You have added the Switch to an already busy network, andresponse times and traffic levels have increased.

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 halfduplex 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.

Via the web interface:Refer to the instructions for Configuring Ports.

You have enabled auto-negotiation for a 10BASE-T/100BASE-TXport, and you are seeing a large number of late events on theport.

The port connected to the Switch is not auto-negotiating and isoperating in full duplex:

If you want the link to operate in full duplex, set the port on theSwitch to operate in full duplex.

Via the CLI:Refer to the instructions for Specifying the Speed and DuplexMode.

Via the web interface:Refer to the instructions for Configuring Ports.

If you want the link to operate in half duplex, set the port on theother end of the link to operate in half duplex. For moreinformation, see the documentation supplied with the remotedevice.

You cannot configure a port for 10Mbps.

Disable auto-negotiation for the port and then set the port speed andduplex mode.

Via the CLI:

1. To disable auto-negotiation for the port, refer to the instructionsfor Enabling and Disabling Auto-negotiation.

2. To specify the speed and duplex mode of the port, refer to theinstructions for Specifying the Speed and Duplex Mode.

Via the web interface:

To disable auto-negotiation for the port and specify the speed andduplex mode of the port, refer to the instructions for Enabling andDisabling Auto-Negotiation.

Slow performance after installing your Switch with an existingNetwork adapter.

Support - Problem Solving - Solving Other Problems

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

Auto-negotiation only works if both sides of the link are set tonegotiate. If an auto-negotiating port is attached to a non auto-negotiating port, the auto-negotiating port will configure itself to halfduplex. This is to prevent connecting to products that only operate inhalf duplex. The default configuration for the Switch ports is auto-negotiation.

Set the Switch port(s) to 100Mbps, full duplex to match the Networkadapter configuration.

Disable auto-negotiation for the port and then set the port speed andduplex mode.

Via the CLI:

1. To disable auto-negotiation for the port, refer to the instructionsfor Enabling and Disabling Auto-negotiation.

2. To specify the speed and duplex mode of the port, refer to theinstructions for Specifying the Speed and Duplex Mode.

Via the web interface:

To disable auto-negotiation for the port and specify the speed andduplex mode of the port, refer to the instructions for Enabling andDisabling Auto-Negotiation.

Related Sections

Solving Web Interface ProblemsSolving Command Line Interface ProblemsSolving VLAN ProblemsSolving SNMP Management Software ProblemsSolving Management Software Upgrade ProblemsSolving Software Update Utility Problems

Web Management Interface - Security Device User Modify

http://support.3com.com/infodeli/tools/switches/ss/fast/dha1730-0aaa02/htmweb/usermodify.htm[11/15/2010 2:51:56 PM]

Web Interface

Security Device User Modify Changing Your Password

You can change the password for your user using the Modify window.

To access the window:


2. Select Security -> Device -> User -> Modify in the Navigation Tree.

3. The Modify window is displayed.

The Modify window contains the following elements:

New Password:Allows you to enter a new password for your user. The password can be up to 10characters long and is case-sensitive.

Passwords must only contain alpha-numeric characters.

Confirm Password:Allows you to re-enter the new password. The password does not change unlessyou enter it in this field.

Web Management Interface - Physical Interface Ethernet Setup

http://support.3com.com/infodeli/tools/switches/ss/fast/dha1730-0aaa02/htmweb/ethernetsetup.htm[11/15/2010 2:52:00 PM]

Web Interface

Physical Interface Ethernet Setup Configuring Ports

You can configure individual and multiple ports on the Switch using the Setup window.



2. Select Physical Interface -> Ethernet -> Setup in the Navigation Tree;

or

Click the relevant port on the Switch graphic and select Setup.

If you want to configure several ports at once, you must access the Setupwindow through the Navigation Tree. Clicking a port on the Switch graphic will onlyallow you to configure that particular port.

3. If you access the Setup window through the Navigation Tree, you are prompted toenter the port numbers, port ranges and/or port labels that you wish to configure:

You must separate the values that you enter with commas.

4. Click OK. The Setup window is displayed.



The Setup page contains the following elements:

Port(s):Displays the number or label of the selected port(s).

Media TypeDisplays the media type of the link connected to the port(s).

Current Port Mode:Displays the speed and duplex mode of the port. If auto-negotiation is enabled, Auto isdisplayed.

Current Flow Control:Displays the current flow control setting for the port(s).

Port State: Enabled / DisabledAllows you to enable or disable the port(s) (that is, turn the port(s) on or off). The defaultstate is Enabled.

Label:Allows you to assign a name to the port(s).

Port Mode: Auto / 10HD / 10FD / 100HD / 100FD / 1000FDThis listbox allows you to specify the speed and duplex mode of the selected ports (HDindicates half duplex, FD indicates full duplex). The default Port Mode is Auto. In this modethe port will negotiate speed, duplex and flow control.

CAUTION: To communicate without errors, both ends of a link must use the sameduplex mode.

Ports operating at 1000 Mbps support full duplex mode only.

GBIC ports (if present on the switch) operate at 1000 Mbps only in full duplex mode.They will still autonegotiate flow control.

For auto-negotiation to succeed, ports at both ends of the link must be set to auto-



negotiate.

Advertised Capabilities: 10HD / 10FD / 100HD / 100FD / 1000FD / Flow ControlAllows you to select the values that are advertised during auto-negotiation, allowing youto restrict the features that the port offers. If you deselect features the port will continueto auto-negotiate, but will only advertise the selected states. To select multiple items fromthe list, control-click each one with your mouse. The default is that all available items areselected.

HD Flow Control: Enabled / DisabledAllows you to enable or disable the flow control that can be used when the port isoperating in half duplex mode. Flow control minimizes packet loss during periods ofcongestion on the port. The default setting is Enabled.

The HD Flow Control listbox should be set to disabled if the port is connected tomultiple devices using a hub. If it is enabled, local traffic between those multiple devices isinhibited. HD Flow Control is not supported by 1000BASE-LX/SX ports.

Default FD Flow Control: Enabled / Disabled / TxOn / RxOnIf auto-negotiation is disabled, this listbox allows you to enable or disable the IEEE 802.3xflow control that can be used when the port is operating in full duplex. If auto-negotiationis enabled, the listbox displays Auto, and you cannot change the flow control setting forthe port manually. Flow control minimizes packet loss during periods of congestion on theport. The default setting is Enabled.

rxOn and txOn are unidirectional flow control commands that may be set up for fiberGigabit Ethernet ports. They will only be available on GBIC ports if present on your unit.

For IEEE 802.3x flow control to operate correctly, it must be enabled at both ends ofthe link.

If you choose to configure more than one port at the same time, only the values thatare identical for each port are displayed in the Setup window. If a value is different forone or more ports, then the field in which it is usually displayed is left blank.

Related Operations

Smart Autosensing Enabling and Disabling Smart AutosensingStatistics Displaying Unit StatisticsPort Setup Summary Displaying Summary Information for Ports

Web Management Interface - Physical Interface Ethernet Statistics

http://support.3com.com/infodeli/tools/switches/ss/fast/dha1730-0aaa02/htmweb/ethernetstatistics.htm[11/15/2010 2:52:03 PM]

Web Interface

Physical Interface Ethernet Statistics Displaying Unit Statistics

You can display a range of statistics for all the ports on the Switch using the Statistics window.



2. Select Physical Interface -> Ethernet -> Statistics in the Navigation Tree;

or

Click the relevant port on the Switch graphic and select Statistics.

If you want to display the statistics for more than one port at the same time, youmust access the Statistics window through the Navigation Tree. Clicking a port on theSwitch graphic will only allow you to display the statistics for that particular port.

If you access the Statistics window through the Navigation Tree, you are prompted toenter the port numbers, port ranges and/or port labels that you wish to configure.

You must separate the values that you enter with commas.

3. The following window is displayed for a single port.

You can click on Counters, Differences, Rates, or Utilitizations to change the type of statisticsdisplayed for the port selected (Counters is the default screen display).

The following window is displayed for multiple ports.

Web Management Interface - Physical Interface Ethernet Statistics

http://support.3com.com/infodeli/tools/switches/ss/fast/dha1730-0aaa02/htmweb/ethernetstatistics.htm[11/15/2010 2:52:03 PM]

You can click on Counters or Differences to change the type of statistics displayed for the rangeof ports selected (Counters is the default screen display).

Related Operations

Setup Configuring PortsSmart Autosensing Enabling and Disabling Smart AutosensingSummary Displaying Summary Information for Ports

Web Management Interface - Security Network Access Port Security

http://support.3com.com/infodeli/tools/switches/ss/fast/dha1730-0aaa02/htmweb/accessportsecurity.htm[11/15/2010 2:52:07 PM]

Web Interface

Security Network Access Port Security Enabling and Disabling Port Security

You can enable and disable security and set the mode of operation on a port using thePort Security wizard.

To access the wizard:


2. Select Security -> Network -> Access -> Port Security in the Navigation Tree.The first Port Security page is displayed.

As you go through the wizard, you need to:

1. Enter the port number(s), range or label(s) on which you wish to enable or disableport security.

2. Choose a security mode for the ports that you have selected:

No Security (default)Port security is disabled and all network traffic is forwarded through the port

Web Management Interface - Security Network Access Port Security

http://support.3com.com/infodeli/tools/switches/ss/fast/dha1730-0aaa02/htmweb/accessportsecurity.htm[11/15/2010 2:52:07 PM]

without any restrictions.

Continuous LearningMAC addresses are learned continuously by the port until the number ofauthorised addresses specified is reached. When this number is exceeded thefirst address that was learned by the port is deleted, allowing a new addressto be learned.

Automatic LearningMAC addresses are learned continuously by the port until the number ofauthorised addresses specified is reached. When this number is exceeded theport automatically stops learning addresses and Disconnect UnauthorizedDevice (DUD) is enabled on the port

If you select No Security, the final Port Security page is displayed. Click the Finishbutton to assign the security configuration to the selected port(s).

If you select Continuous Learning or Automatic Learning, the next PortSecurity page is displayed. Go to Step 3.

3. Enter the number of authorised addresses you wish to have for the port(s).

This value must be between 0 and 4.

4. If you selected Automatic Lea

manual 3com 4200 super stack

Documents

reference guidehttp

command line interfacehttp

command line interfacehow

entire guide

thereference guide

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web interfaceunderstanding

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