3Com 4210 PWR 26-PORT, 4210 PWR 18-PORT, 4210 9-PORT, 4210 18-PORT, 4210 26-PORT Problem Solving

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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 4210 Command Reference Guide availabe on 3Com’s web site at www.3com.com.

For Technical Support information, see “Obtaining Support for Your 3Com Products” on page 59.

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Contents 3Com Switch 4210 Family United States Government Legend 3Com Corporation Campus Drive Marlborough, MA USAContents Regulatory Notices Obtaining Support for Your 3COM ProductsAbout this Guide Related Documentation Overview Wire-speed Layer 2 switchingDescription of their features Product IntroductionSwitch 4210 9-port PWR Front panel Introduction to Switch 4210 Family PWR SwitchesCooling system Power systemRear panel Side panelFront panel of a Switch 4210 18-port PWR Shows the front panel of the Switch 4210 26-port PWR model Switch 4210 26-port PWR units support AC input or DC input AC inputDC input-Rated voltage range -52 VDC to -56 VDC Mbps Uplink Port Status LED Power LEDFront Panel LEDs 10/100BASE-TX Autosensing Ethernet Port Status LEDPanel Status Introduction to the Switch 4210 Family Non-PWR ModelsThis section describes each Switch 4210 Family model Switch 4210 9-port Front panelSwitch 4210 18-port Front panel Switch 4210 cools off naturallySwitch 4210 18-port model’s rear panel Switch 4210 26-port Front panelSwitch 4210 26-port rear panel Switch 4210 52-port Front PanelPort LED Describes the 10/100Base-TX autosensing port’s Link/Act LEDDescribes the Speed LED on the 10/100Base-TX port Technical Specifications Technical specifications for the SwitchSwitch Model Port PWR Earthing Lead Technical specifications for the Switch 4210 PWR modelsSupported for SwitchSFP modules supported by the Switch SFP ModulesProduct Introduction Installing the Switch Installing the Switch Mount the front bracket to the device Screw Front Installing the switch in a 19-inch rackInstallation completed 4210 Power-upSequence Ready for operationPWR LED Colors Connecting aRedundant Power Supply 52 for a list of suggested solutionsSystem Redundancy +1 Rectifier Power AvailabilitySwitch 4210 Circuit Breaker and Cable Ratings Rectifiers No RectifierRPS Connection to the Switch Using Power over EthernetTerminal, as shown in Figure ConnectingRJ-45 Signal Direction DB9 console Console CableGND RXD DSR CTS Installing the Switch Managing Your Switch Methods of Managing a Switch User ViewSystem View Need to Setting Up YourRefer to Setting Up Snmp Management on Configured IP informationSnmp Configuring IP ManuallyAutomatically Configuring the IP Address using Dhcp Information Configured IPViewing AutomaticallyUser View Login Connecting the Workstation to the Switch Manually Configuring IP InformationConnecting to Console Port You can manually configure the switch IP information byOnce you have logged in you are automatically in User View Setting Up the Switch with IP InformationPrerequisites Using the Web Interface Enter the system-viewcommand and Enter Using Command Line Interface using TelnetNetwork Telnet Where xxx.xxx.xxx.xxx is the IP address of the switchManagement Console Port ConnectionLine Interface Setting Up CommandManagement using Setting Up WebString to be removed Setting Up SnmpString is private New community string up to 32 charactersUser Default Name Password Access Level Default UsersPasswords Default UsersProblem Solving Indicated by LEDs Solving ProblemsSolving Hardware ProblemsHow do you obtain a registered IP Address? Solving Communication ProblemsError message indicating that the SFP transceiver is faulty IP AddressingSolving Fabric Formation ProblemsProblem Solving RJ-45 to RS-232 25-pin PIN-OUTSNull Modem Cable PC-AT Serial CableEthernet Port RJ-45 Pin Assignments 10/100 and 1000BASE-T RJ-45 connectionsPin assignments Obtaining Support for Your 3COM Products Support and Repair Available for purchase from your 3Com resellerContact Us Telephone TechnicalCountry Telephone Number US and Canada Telephone Technical Support and Repair Latin America Telephone Technical Support and RepairDirector 3COM Network Management3Com Network SupervisorAppendix C 3COM Network Management HP OpenView 3Com EnterpriseManagement Suite Integration Kit withAppendix C 3COM Network Management Important Safety Information Safety InformationWichtige Sicherheitsinformationen ’information de Sécurité ImportanteInformación de Seguridad Importante Appendix D Redundant Power Supply Safety Information Importanti Informazioni di Sicurezza Ważne informacje o zabezpieczeniachAppendix D Redundant Power Supply Safety Information Regulatory Notices How to identify and resolve radio-TV interference problemsAppendix D Redundant Power Supply Safety Information