Problem Solving

4	PROBLEM SOLVING

This chapter helps you to diagnose and solve problems you may have with the operation of your Switch. There is also an explanation of IP addressing and upgrading software.

The topics covered are:

■Solving Problems Indicated by LEDs

■Solving Hardware Problems

■Solving Communication Problems

■Solving Fabric Formation Problems

If you experience a problem that is not listed here, it may be included in the Support section of the Switch 4200G Command Reference Guide on the CD-ROM that accompanies your Switch.

For Technical Support information, see Appendix D.

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3Com 3CR17660-91, 3CR17662-91, 3CR17661-91 manual Problem Solving

Contents

3Com Switch 4200G Family United States Government Legend 3Com Corporation Campus Drive MarlboroughPage Page Contents Installing the Switch Problem Solving PIN -OUTS About this Guide Convention Description ConventionsIcon Description Documentation RelatedDocumentation Pddtechpubscomments@3com.com Comments Introducing Hardware Features Switch 4200G About the Switch 4200G Commander Switch 4200G-Front View Switch 4200G 48-Port-front view Status Display Display Mode LED Color Description 10/100/1000BASE-T Port LEDs Mode LEDColor Indicates 1000BASE-X Port SFP Port LEDs Rear View DetailSlots Duplex Mode Feature Switch 4200G Automatic IP ConfigurationRmon Alarm Configuration Save Installing the Switch Site Package ContentsChoosing a Suitable Front of the Switch, as shown in Figure To rack-mount your SwitchRack-mounting Inch racks Fitting a Bracket for Rack-Mounting Repeat and for the other side of the Switch Powered-up and ready for operation Power-upSwitch 4200G Sequence SFP port LEDs on page 54 for a list of suggested solutionsSFP Operation Inserting an SFP Transceiver Remove the plastic protective cover if fitted Choosing Your SwitchCorrect Cables Transceiver Choosing the Correct Cables Installing the Switch Setting UP for Management Refer to Setting Up Command Line Interface Management on Methods of Managing a SwitchCommand Line Interface Management System View There are two main views in the CLIUser View Overview Setting Up Snmp Automatic IP Configuration using Dhcp Manual IP Configuration Manually Configuring IP Information Prerequisites Connecting the Workstation to the Switch Setting Up the Switch with IP Information Enter interface vlan 1 and Enter Enter the system-viewcommand and Enter With a Network Using the Web Interface Using Command Line Interface using Telnet Using 3Com Network Director Viewing Automatically Configured IP InformationEnter the default gateway for the Switch Viewing IP Information using the Console Port Interface Management Command Line SSH Setting Up Command Line Interface Management using Choosing a Browser Setting Up WebInterface 2000 Windows XP Server Over the NetworkWindows Red Hat Setting Up Snmp Management V1 or User Default Access Level Name Password Default Users Setting UP for Management Problem Solving Indicated by LEDs Solving Problems Solving Hardware Problems Unit fails, no Snmp fan failure message is received Error message indicating that the SFP transceiver is faulty How do you obtain a registered IP Address? Solving Communication ProblemsIP Addressing Problem Solving Upgrading Software File list similar to the following is displayed If the recycle-bin is empty the following is displayed To back up the application file on your Switch, enterTo back up the bootrom file on your Switch, enter Command Line Interface Switch Setup 4200G ping aaa.aaa.aaa.aaa Via network port To install the new application code, enter Type y when promptedTo install the new web management code, enter To download the web management file, enter Enter y to display the following message Following information is displayed Upgrading from Bootrom InterfaceFollowed by a password prompt S3t03010024.zip 3comoscfg.def 3comoscfg.cfg s3t030100s56.app Enter your choice0-3 Select option 3 to display the following Select option 2 to display the following Upgrading Bootrom Using FTP Using Tftp Using XModem Ccccccccccccccccccccccccccccc Upgrading Software Safety Information This must be approved for the country where it is used Power Cord Set-Japan Important Safety Information Important Safety Information ’information de Sécurité Importante Schko Dispositif Laser De Classe Vorsicht Das Gerät muß geerdet sein Wichtige Sicherheitsinformationen Información de Seguridad Importante Schuko Importanti Informazioni di Sicurezza Stati Uniti e Ważne informacje o zabezpieczeniach Ważne informacje o zabezpieczeniach Ostrzeżenie Porty światłowodowe-bezpieczeństwo PIN-OUTS Pin Number 10/100 1000 Ethernet Port RJ-45 Pin Assignments10/100 and 1000BASE-T RJ-45 connections Ethernet Port RJ-45 Pin Assignments Appendix B PIN-OUTS Switch 4200G 12-Port Switch 4200G 24-Port Switch 4200G 48-Port Appendix C Technical Specifications Register Your ServicesProduct Purchase Troubleshoot Access SoftwareOnline Downloads Contact Us US and Canada Telephone Technical Support and Repair Country Telephone NumberLatin America Telephone Technical Support and Repair Numbers Index SFP Regulatory Notices