3Com 3CR17450-91, 3CR17451-91 manual Fan failure warning message is received

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48CHAPTER 4: PROBLEM SOLVING

A fan failure warning message is received

Your Switch has a fan monitoring system that will generate fan failure warning messages. Fan failure could potentially reduce the lifetime of the Switch. The monitoring system polls the fan status at periodic intervals while the unit is powered up.

Should one or more fans fail within the Switch, a warning message will be generated in the following ways:

■RMON Trap — if configured, an RMON trap is generated and sent to the management workstation.

■Command Line Interface — an indication of a general hardware failure is provided through the Top level menu displayed when logging on to the CLI. For more detailed information about the failure select the system summary command.

■Web interface — an indication of fan failure is provided through the Device Summary table for the specific unit. In addition all Summary tables turn red to indicate the fan failure. The device mimic will also display red flashing fan icons.

For further information about RMON, refer to “Chapter 7: Status Monitoring and Statistics” in the Switch Implementation Guide supplied in PDF format on the CD-ROM that accompanies the Switch.

If a fan failure warning message is generated:

1Power off the unit.

2Check that the air vents are not obstructed.

3Power cycle the unit. To do this, remove and reconnect the AC mains supply.

4If a fan fail trap is still received, return the unit.

Unit fails or SNMP thermal shutdown trap is received

1Power cycle the unit. To do this, remove and reconnect the AC mains supply.

2Check the command line interface (system summary command) to determine whether a thermal shutdown has occurred.

3If no, return the unit: If yes, check that:

■ The air vents are not obstructed.

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Contents SuperStack 3 Switch 3870 Family Getting Started Guide 3Com Corporation Campus Drive Marlborough MA USA United States Government LegendContents Setting UP for Management PIN-OUTS Page About this Guide Convention Description ConventionsIcon Description Documentation documentation RelatedDocumentation To access the online documentation from the CD-ROM CommentsSwitch 3870Hardware Features Switch Switch Front View Detail1000BASE-T Ports Stack Master LED Color Indicates Port Status/Packet LEDsStacking Status LED Color Indicates Module LEDs Power/Self Test LEDFault LED Unit LEDView Detail Type of Unit Total Units in the Stack Maximum Modules Port Feature Switch Port StatusDuplex Mode Port SpeedDefault Settings Introducing the Superstack 3 Switch Installing the Switch Site Package ContentsChoosing a Suitable Switch, as shown in Figure Power lines and fluorescent lighting fixturesTo rack-mount your Switch Rack-mountingRepeat steps 2 and 3 for the other side of the Switch Fitting a bracket for rack-mountingSwitch Power-upPowered-up and ready for operation SequencePower System output Cross-over Cable Straight-through CableSFP Operation Remove the plastic protective cover if fitted Removing an SFP Your SwitchTransceiver Installing the Switch Setting UP for Management Setting Up OverviewManual IP Configuration Automatic IP ConfigurationSetting UP for Management Manually Configuring IP Information Pre-requisitesConnecting the Workstation to the Switch Setting Up the Switch with IP InformationExample top-level command line interface menu Automatically Configured IPViewing Viewing Automatically Configured IP Information Viewing IP Information via the Console Port Refer to Setting Up Command Line Interface Management on Web Interface Command LineInterface Management ManagementNetwork Using Telnet Where xxx.xxx.xxx.xxx is the IP address of the SwitchChoosing a Browser Setting Up WebInterface Over the NetworkPasswords Setting Up SnmpDefault Users User Default Access Level Name Password Security Device User Modify operation on the web interfaceProblem Solving On powering-up, the Power/Self Test LED remains yellow Solving ProblemsPower/Self Test LED does not light Indicated by LEDsSolving Hardware ProblemsRefer to the list of suggested solutions below Port Status LED is flashing green/yellowFan failure warning message is received Unit fails or Snmp thermal shutdown trap is receivedIP Addressing Solving Communication ProblemsError message indicating that the SFP transceiver is faulty How do you obtain a registered IP Address? Solving Software Upgrade Problems Problem Solving Safety Information Power Cord Set Japan Important Safety Information This must be approved for the country where it is usedImportant Safety Information ’information de Sécurité Importante Class’information de Sécurité Importante Dispositif Laser De Classe Wichtige Sicherheitsinformationen Vorsicht EuropeInformación de seguridad importante Laser Gerät der KlasseSchuko Appendix a Safety Information Importanti Informazioni di Sicurezza CSASolo Regno Ważne informacje o zabezpieczeniach Appendix a Safety Information Laser Produkt Klasa Appendix a Safety Information RJ-45 to 9-pin PC-AT Serial CableNull Modem Cable RJ-45 to RS-232 25-pin RJ-45 to RS-232 25-pin Modem CableRJ-45 Pin Assignments Pin Number 10/100 1000Pin Number 10/100 1000 Appendix B PIN-OUTS Switch 3870 24 Port Switch 3870 48 Port Register Your Product to Gain Service BenefitsServices PurchaseContact Us Access SoftwareDownloads Telephone TechnicalAustralia 800 678 Philippines US and Canada Telephone Technical Support and Repair Index SFP Page Chapter Index Regulatory Notices