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3Com DUA1770-0AAA04 manual Unit fails, no SNMP fan failure message is received

Models: DUA1770-0AAA04

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56CHAPTER 4: PROBLEM SOLVING

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. If the unit has no AC main supply, remove and reconnect the DC RPS supply.

4If another fan failure warning message is generated via the Command Line Interface or the Web interface, return the unit.

Unit fails, no SNMP fan failure message is received

1Power cycle the unit. To do this, remove and reconnect the AC mains supply. If the unit has no AC mains supply, remove and reconnect the DC RPS 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.

■The ambient temperatures and environmental conditions meet those specified in Appendix C.

4Power cycle the unit. If a further thermal shutdown occurs, and all environmental conditions are satisfactory, return the unit to 3Com.

Error message indicating that the GBIC transceiver is invalid

The Switch has identified that the GBIC does not meet the minimum requirements for the Switch and has disabled the port. To correct this problem, completely remove the GBIC and replace it with a 3Com approved GBIC. See “Approved GBIC Transceivers”on page 29

Error message indicating that the GBIC transceiver is faulty

To correct this problem, completely remove the GBIC and then reinsert it. If the problem persists, contact 3Com Technical Support.

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3Com DUA1770-0AAA04 manual Unit fails, no SNMP fan failure message is received

Contents

Switch 4900 Series Getting Started Guide Switch 4900 3C17700 Switch 4900 SX 3C17702 Switch 4924 3C17701Switch 4950 3C17706 SuperStackUNITED STATES GOVERNMENT LEGEND ENVIRONMENTAL STATEMENTEnd of Life Statement Regulated Materials StatementCONTENTS 1 INTRODUCING THE SUPERSTACK 3 SWITCH 4900 SERIES2 INSTALLING THE SWITCH ABOUT THIS GUIDESNMP Management 3 SETTING UP FOR MANAGEMENTChoosing the Correct Fiber Cables PROBLEM SOLVING SAFETY INFORMATIONC TECHNICAL SPECIFICATIONS D TECHNICAL SUPPORT PIN-OUTSPage ABOUT THIS GUIDE Conventions CommandsNotice Icons Table 2 Text ConventionsDocumentation documentation RelatedDocumentation Product RegistrationDocumentation CommentsAbout the Switches Summary of Hardware Features Switch - Front View Detail 100/1000BASE-T and 10/100/1000BASE-T Ports1000BASE-SX Ports GBIC Ports LEDs Switch - Rear View Detail Unit Information Label Power Socket Redundant Power System Socket12 CHAPTER 1 INTRODUCING THE SUPERSTACK 3 SWITCH 4900 SERIES Hardware Features Switches Table 3 Hardware featuresSwitch - Front View Detail Figure 1 Switch 4900 - front viewFigure 2 Switch 4900 SX - front view 14 CHAPTER 1 INTRODUCING THE SUPERSTACK 3 SWITCH 4900 SERIESFigure 3 Switch 4924 - front view Figure 4 Switch 4950 - front view Switch - Front View DetailPorts cross-over Power/Self Test LED Table 4 LED behaviorColor IndicatesSwitch - Rear View DetailFigure 5 Switch 4900 - rear view Figure 6 Switch 4900 SX - rear viewPower Socket the Switch units, it is returned to these defaults Default Settingssupported by your Switch INSTALLING THE SWITCH Package Contents Choosing a Suitable Site Rack-mountingThe Power-up Sequence Switch 4950 - GBIC Operation Placing Units On Top of Each Other Creating an XRN Distributed FabricSite Package ContentsChoosing a Suitable 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 The Power-up Powering-up theSwitch SequenceIf there is evidence of a problem, see “Solving Problems Indicated by Fiber Cables Switch 4950 - GBIC OperationApproved GBIC TransceiversFiber 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 SETTING UP FOR MANAGEMENT Setting Up Overview Manually Configuring IP InformationViewing Automatically Configured IP Information Methods of Managing a SwitchSetting Up Overviewwhole setup process is summarised in Figure 12. Detailed procedural Figure 12 Initial Switch Setup and Management Flow diagramManual IP Configuration Automatic IP Configurationon page You should use the automatic IP configuration method ifManually Configuring IP Information Pre-requisitesConnecting the Workstation to the Switch Configuring the Workstation with IP InformationSetting Up the Switch with IP Information IP addressUsing Command Line Interface via Telnet Figure 14 Example top-level command line interface menu Pre-requisitesFigure 15 Connecting a workstation to the Switch via the console port You can find pin-out diagrams for both cables in Appendix B on pageConnecting the Workstation to the Switch 42 CHAPTER 3 SETTING UP FOR MANAGEMENT Setting Up the Switch with IP InformationFigure 16 Example top-level command line interface menu Configured IP ViewingAutomatically InformationPre-requisites Connecting the Workstation to the Switch44 CHAPTER 3 SETTING UP FOR MANAGEMENT Viewing IP Information via the Console Port Figure 18 Example top-level command line interface menu 46 CHAPTER 3 SETTING UP FOR MANAGEMENTRefer to “Setting Up Command Line Interface Management” on page Refer to “Setting Up Web Interface Management” on pageCommand Line Refer to “Setting Up SNMP Management” on pageusing Telnet InterfaceSetting Up Web described in “Setting Up Overview” on pagetelnet Choosing a BrowserOver the Network http//xxx.xxx.xxx.xxx50 CHAPTER 3 SETTING UP FOR MANAGEMENT c\ pingSetting Up SNMP Default Users andPasswords system management snmp community command - refer to theThe security device user modify command on the CLI, or You can change the default passwords using eitherThe gettingStarted command on the CLI, or Default UsersSolving Communication Problems Solving Software Upgrade Problems PROBLEM SOLVINGSolving Problems Indicated by LEDs Solving Hardware Problems Solving Problems solutions belowThe Power LED does not light On powering-up, the Power/Self Test LED lights yellowA fan failure warning message is received ProblemsSolving Hardware Unit fails, no SNMP fan failure message is received Error message indicating that the GBIC transceiver is invalidError message indicating that the GBIC transceiver is faulty Solving Communication Problems IP AddressingHow 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 Wichtige Sicherheitsinformationen VORSICHT EuropeWichtige Sicherheitsinformationen 68 APPENDIX A SAFETY INFORMATION B PIN-OUTS PC-AT Serial CableModem Cable RJ-45 PinAssignments Pin assignments are identical for 10/100BASE-T and 1000BASE-T RJ-45Table 11 Pin assignments Pin Number10/100BASE-T 1000BASE-T72 APPENDIX B PIN-OUTS TECHNICAL SPECIFICATIONS Switch 4900 SX Height 65.8 mm 2.59 in. x Width 440 mm 17.3 in413 mm 16.27 in. not including bulge. Weight 6.4 Kg 14.10 lbs 413 mm 16.27 in. not including bulge. Weight 6.91 Kg 15.23 lbsPower Supply Protocols Used for AdministrationHeat Dissipation Standards SupportedServices ServicesOnline Technical World Wide Web SiteUsername anonymous Asia, Pacific Rim Europe, Middle East and AfricaLatin America aprtechnicalsupport@3com.comCountry Telephone NumberCountry Telephone NumberReturning Products for Repair Country Telephone NumberCountry Telephone NumberINDEX NumbersPage How to Identify and Resolve Radio-TV Interference Problems REGULATORY NOTICESFCC STATEMENT INFORMATION TO THE USER