3Com 32x, 52x manual Troubleshooting, System /Fault

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TROUBLESHOOTING

This chapter describes troubleshooting using the LEDs on the front panel of the system.

If the Power/Fault LED appears yellow at any time during the startup process, the bridge/router has encountered a problem during system test or system software load. If the Power/Fault LED appears yellow, check the other LEDs as shown in the following ﬁgure.

SuperStack II

NETBuilder

Console Run

Status Load

Test

Fwd Power

SYSTEM /Fault

®

Status LEDs: (Left to right) is each one on or off?	If the Power/Fault LED appears yellow during startup, check
Load LED: is it on constantly, or flashing?	the other LEDs for related indications of the problem.
Test LED: Is it on or off?

If the Test LED is lit, a problem occurred during the system test phase. Note the pattern of the Status LEDs and compare the results with the information in Table 4-1.

If the Load LED is lit, a problem occurred during the system software load phase. Note the pattern of the Status LEDs and compare the results with the information in Table 4-2.

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Contents Models 32x Electromagnetic Compatibility Information Avis Canadien CE Notice Contents Removing the Cover Installing Memory Reinstalling the Cover Connectors and CablesIndex 3COM Corporation Limited Warranty Viii Conventions About this GuideIcon Alerts you to Chapter about this Guide Required Installing the HardwareEquipment 1Equipment Received and Equipment NeededFor more information on cables, refer to Chapter Mounting 1Rack-Mount Kit Contents4CHAPTER 1 Installing the Hardware Cabling Cabling the Isdn Connector Model Cabling the LAN Connector Models 323, 327,Connector Connection to Mode Cable Name Sold by 3Com? 2Serial Connector Cabling InformationModels 32x DCE-like mode Models 32x DTE modeModels 52x DCE-like mode Models 52x DTE modeAttaching a Redundant PowerSystem Characteristic Setting Connecting a PCTerminal, or Modem12CHAPTER 1 Installing the Hardware 1SuperStack II NETBuilder Model Features Model FeaturesOverview Chassis PanelsModel PanelsConnectors Interrupt SwitchLEDs Hardware39-pin to 9-pin PC Cable Null Modem-Type PC Cable49-pin to 25-pin Terminal Cable Null Modem-Type Terminal CableModem Cable UTP Connector and Cable2UTP Cable Types, MAUs, and Emissions Compliance STP Connector and Cable3STP Cable Types, MAUs, and Emissions Compliance Shielded4Auxiliary Pin Use Cabling Standards5Maximum Workstations on a Token Ring Network Pinout STP Maximum Current6V.35 Straight-Through Cable To V.35 DCE Cable7V.35 to V.35 Direct-Connect Cable To V.35 Direct Connect Cable8UNIVERSAL to V.35 Adapter Cable Universal to V.35 Adapter Cable9UNIVERSAL to V.35 Direct Connect Cable Universal to V.35 Direct Connect Cable10UNIVERSAL to V.36 Adapter Cable Universal to RS-449/V.36 DCE Cable11UNIVERSAL to RS-449/V.36 Direct-Connect Cable Universal to RS-449/V.36 Direct Connect Cable12UNIVERSAL to RS-232 DCE Cable Universal to RS-232 DCE CableUniversal to RS-232 Direct-Connect Cable Universal to RS-232 Direct Connect Cable14RS-232 Straight-Through Cable RS-232 to RS-232 DCE Cable15RS-232 to RS-232 Direct-Connect Cable RS-232 to RS-232 Direct Connect Cable16UNIVERSAL to X.21 Adapter Cable Universal to X.21 Adapter Cable6ISDN Cable Pinouts Pin No Function SignalAltitude Physical SpecificationsRelative Humidity 22CHAPTER 2 Overview Removing the Cover Upgrading MemoryDip switches should all be in the down position Reinstalling Cover 4CHAPTER 3 Upgrading Memory System /Fault TroubleshootingPhase TroubleshootingDuring the Test During the LoadLED Meanings Associated Model No Connector3LED Meanings Call your network supplier for assistanceToken Ring Symptom Cause and ActionConnection This is Only station 0001 0101 Canonical least significant bit firstProvisioning Your Isdn Line American Isdn BRI ServicesAT&T 5ESS NI1 Isdn Information Sheet 3Com SuperStack II Bridge/RouterAT&T 5ESS North American Switch Provisioning TablesRequired Information Table A-1Ordering Isdn Service for an AT&T 5ESS SwitchDN must be set as follows Parameter Setting Required Information SpecificationTable A-3Ordering Isdn Service for a DMS 100 Switch SPIDs Table A-4Ordering Isdn Service for a Siemens Ewsd Switch8APPENDIX a Provisioning Your Isdn Line Ordering German Isdn BRI Services10APPENDIX a Provisioning Your Isdn Line Technical Support ServiceOnline Technical 3Com Bulletin BoardAccess by Digital Modem Access by Analog Modem408 654 Country Data Rate Telephone NumberCountry Number Telephone3Com Benelux B.V Country Telephone Number Fax Number Page Numerics IndexSTP UTP Index 3Com Corporation Limited Warranty Limitation of Liability