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3Com DUA1770-0AAA04 manual Solving Hardware, Problems, A fan failure warning message is received

Models: DUA1770-0AAA04

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Solving Hardware

Solving Hardware Problems

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Solving Hardware	In the rare event of your Switch unit experiencing a hardware failure,
Problems	refer to the list of suggested solutions below.
	An expansion module is installed and the unit will not power up
	Ensure that the expansion module is fully seated in the slot and the
	connectors are engaged so that the securing screws can be tightened.
	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 fan failure occur in the Switch, a warning message will be
	generated in the following ways:
	■ RMON Email Notification — If configured, you will receive
	notification of the fan failure via email, SMS (Short Message Service),
	or pager.
	■ RMON Trap — If configured, an RMON trap is generated and sent to
	the management workstation.
	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 more than one fan fails in the Switch, a warning message will be generated by RMON Email Notification, RMON Trap and also in the following ways:

■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.

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3Com DUA1770-0AAA04 manual Solving Hardware, Problems, A fan failure warning message is received

Contents

SuperStack Switch 4900 Series Getting Started GuideSwitch 4900 3C17700 Switch 4900 SX 3C17702 Switch 4924 3C17701 Switch 4950 3C17706Regulated Materials Statement UNITED STATES GOVERNMENT LEGENDENVIRONMENTAL STATEMENT End of Life StatementABOUT THIS GUIDE CONTENTS1 INTRODUCING THE SUPERSTACK 3 SWITCH 4900 SERIES 2 INSTALLING THE SWITCHChoosing the Correct Fiber Cables 3 SETTING UP FOR MANAGEMENTSNMP Management PIN-OUTS PROBLEM SOLVINGSAFETY INFORMATION C TECHNICAL SPECIFICATIONS D TECHNICAL SUPPORTPage ABOUT THIS GUIDE Table 2 Text Conventions ConventionsCommands Notice IconsDocumentation RelatedDocumentation documentation Comments ProductRegistration DocumentationUnit Information Label Power Socket Redundant Power System Socket About the Switches Summary of Hardware FeaturesSwitch - Front View Detail 100/1000BASE-T and 10/100/1000BASE-T Ports 1000BASE-SX Ports GBIC Ports LEDs Switch - Rear View Detail12 CHAPTER 1 INTRODUCING THE SUPERSTACK 3 SWITCH 4900 SERIES Table 3 Hardware features Hardware Features Switches14 CHAPTER 1 INTRODUCING THE SUPERSTACK 3 SWITCH 4900 SERIES Switch - Front View DetailFigure 1 Switch 4900 - front view Figure 2 Switch 4900 SX - front viewSwitch - Front View Detail Figure 3 Switch 4924 - front view Figure 4 Switch 4950 - front viewPorts cross-over Indicates Power/Self Test LEDTable 4 LED behavior ColorFigure 6 Switch 4900 SX - rear view Switch - RearView Detail Figure 5 Switch 4900 - rear viewPower Socket supported by your Switch Default Settingsthe Switch units, it is returned to these defaults Placing Units On Top of Each Other Creating an XRN Distributed Fabric INSTALLING THE SWITCHPackage Contents Choosing a Suitable Site Rack-mounting The Power-up Sequence Switch 4950 - GBIC OperationChoosing a Suitable Package ContentsSite Rack-mounting 4 Repeat steps 2 and 3 for the other side of the Switch The maximum number of Switch units that can be interconnected is two Sequence The Power-upPowering-up the SwitchIf there is evidence of a problem, see “Solving Problems Indicated by Fiber Cables Transceivers Switch 4950 - GBICOperation Approved GBICFiber SC connector Type 4 GBIC with internal EEPROM fitted 3 The transceiver connects to the network using a duplex SC connector. Attach a male duplex SC connector on the network cable into the duplex SC connector on the transceiver 32 CHAPTER 2 INSTALLING THE SWITCH Methods of Managing a Switch SETTING UP FOR MANAGEMENTSetting Up Overview Manually Configuring IP Information Viewing Automatically Configured IP InformationFigure 12 Initial Switch Setup and Management Flow diagram Setting UpOverview whole setup process is summarised in Figure 12. Detailed proceduralAutomatic IP Configuration Manual IP ConfigurationYou should use the automatic IP configuration method if on pagePre-requisites Manually Configuring IP InformationIP address Connecting the Workstation to the SwitchConfiguring the Workstation with IP Information Setting Up the Switch with IP InformationUsing Command Line Interface via Telnet Pre-requisites Figure 14 Example top-level command line interface menuConnecting the Workstation to the Switch You can find pin-out diagrams for both cables in Appendix B on pageFigure 15 Connecting a workstation to the Switch via the console port Figure 16 Example top-level command line interface menu Setting Up the Switch with IP Information42 CHAPTER 3 SETTING UP FOR MANAGEMENT Information Configured IPViewing Automatically44 CHAPTER 3 SETTING UP FOR MANAGEMENT Connecting the Workstation to the SwitchPre-requisites Viewing IP Information via the Console Port 46 CHAPTER 3 SETTING UP FOR MANAGEMENT Figure 18 Example top-level command line interface menuRefer to “Setting Up Web Interface Management” on page Refer to “Setting Up Command Line Interface Management” on pageInterface Command LineRefer to “Setting Up SNMP Management” on page using TelnetChoosing a Browser Setting Up Webdescribed in “Setting Up Overview” on page telnetc\ ping Over the Networkhttp//xxx.xxx.xxx.xxx 50 CHAPTER 3 SETTING UP FOR MANAGEMENTsystem management snmp community command - refer to the Setting Up SNMPDefault Users and PasswordsDefault Users The security device user modify command on the CLI, orYou can change the default passwords using either The gettingStarted command on the CLI, orSolving Problems Indicated by LEDs Solving Hardware Problems PROBLEM SOLVINGSolving Communication Problems Solving Software Upgrade Problems On powering-up, the Power/Self Test LED lights yellow Solving Problemssolutions below The Power LED does not lightSolving Hardware ProblemsA fan failure warning message is received Error message indicating that the GBIC transceiver is faulty Error message indicating that the GBIC transceiver is invalidUnit fails, no SNMP fan failure message is received IP Addressing Solving Communication ProblemsHow do you obtain a registered IP Address? SAFETY INFORMATION Important Safety Information Important Safety Information 62 APPENDIX A SAFETY INFORMATION L’information de Sécurité Importante AVERTISSEMENT France et Pérou uniquement 3CGBIC91 GBIC SX 3CGBIC92 GBIC LX 3CGBIC97 GBIC LH70 VORSICHT Europe Wichtige SicherheitsinformationenWichtige Sicherheitsinformationen 68 APPENDIX A SAFETY INFORMATION PC-AT Serial Cable B PIN-OUTSPin assignments are identical for 10/100BASE-T and 1000BASE-T RJ-45 Modem CableRJ-45 Pin Assignments1000BASE-T Table 11 Pin assignmentsPin Number 10/100BASE-T72 APPENDIX B PIN-OUTS 413 mm 16.27 in. not including bulge. Weight 6.91 Kg 15.23 lbs TECHNICAL SPECIFICATIONSSwitch 4900 SX Height 65.8 mm 2.59 in. x Width 440 mm 17.3 in 413 mm 16.27 in. not including bulge. Weight 6.4 Kg 14.10 lbsStandards Supported Power SupplyProtocols Used for Administration Heat DissipationWorld Wide Web Site ServicesServices Online TechnicalUsername anonymous aprtechnicalsupport@3com.com Asia, Pacific RimEurope, Middle East and Africa Latin AmericaTelephone Number CountryTelephone Number CountryReturning Products for Repair Telephone Number CountryTelephone Number CountryNumbers INDEXPage INFORMATION TO THE USER How to Identify and Resolve Radio-TV Interference ProblemsREGULATORY NOTICES FCC STATEMENT