Cabletron Systems SEHI100TX manual Using Lanview

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Chapter 6: Troubleshooting

2.If the remote station is ready and the LNK LED is on, but no data passes through the port, one of two conditions may exist:

Network management has disabled the port. Correct this condition by enabling the port through network management.

The port is segmented either because the collision detector was on for more than 110 s or the SEHI detected more than 32 consecutive collisions on the attached segment. The affected port remains segmented until a good packet is transmitted/received without collisions.

If the LNK LED is still not on, contact Cabletron Systems Technical Support.

6.2USING LANVIEW

The SEHI incorporates the Cabletron Systems LANVIEW status monitoring and diagnostics system. LANVIEW LEDs help diagnose problems such as power failure or cable fault. The SEHI includes the following LANVIEW LEDs:

PWR, for power status

CPU, for board status

RCV (Receive), LNK (Link), and CLN (Collision) for Ethernet status.

Figure 6-1 provides a quick reference chart of LED locations and definitions. This chapter also includes a detailed description of each LED.

6-2

SEHI100TX User’s Guide

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Contents Intelligent Stackable HUB USER’S Guide SEHI100TX User’s Guide FCC Notice Cabletron SYSTEMS, INC. Program License Agreement United States Government Restricted Rights Contents Contents SEHI100TX User’s Guide Vii Using this Manual Chapter IntroductionDocument Conventions Following conventions are used throughout this documentGetting Help Related ManualsChapter Sehi Features and Options Sehi OverviewSehi Features Sehi Features and OptionsStackable Capabilities Optional 100BASE-TX and 100BASE-FX EPIMs Rack Mounting CapabilitiesRemote Network Management HubSTACK Interconnect Cable Requirements Chapter Installation Requirements SpecificationsCable Specifications UTP Cable Specifications Multimode Specifications for the EPIM-100FX Network Cable Lengths Network Port Specifications COM Port RequirementsEnvironmental Requirements Operating SpecificationsPower Supply Requirements Physical Specifications Agency ApprovalsChapter Installation Unpacking the SehiPRE-INSTALLATION Checkout Nvram Switch LocationTabletop or Shelf Installation SEHI100TX-22Rackmount Installation Screws Strain-Relief BracketRackmount Installation Installing the Sehi in the Rack Powering UP and Stacking the Sehi Repeat steps 3 through 6 until all SEH hubs are connected Installing the EPIM-100TX or the EPIM-100FX Install an EPIM-100TX or an EPIM-100FX as followsConnecting to Network Ports Chapter Connecting to the NetworkConnecting the Sehi to the Network Connecting a UTP Segment to an EPIM-100TX Sehi Network PortsPosition X crossed over RX+ TX+ Position = Not crossed over Connecting a Fiber Segment to the EPIM-100FX EPIM-100FX PortTesting the Installation Chapter Troubleshooting Installation TestUsing Lanview Using Lanview Using the Reset Button Epim 1 RCV LEDSetting the Nvram Switch Chapter Local Management Local Management Keyboard Conventions Keyboard Conventions FunctionManagement Terminal Setup Console Cable Configuration Management Terminal Setup Parameters Accessing Local Management Sehi Local ManagementFeature Selection Screen Feature Selection ScreenCommunity Name Table Screen Community Name Table ScreenEditing the Community Name Field Configuration Screen ConfigurationDisplays the IP address of the Sehi Setting the IP Address Setting the Subnet MaskSetting the Default Gateway Using the Port Enable OverrideExiting the Configuration Screen Trap Table Screen1 Configuring the Trap Table Exiting the Trap Table ScreenSnmp Tools Screen Snmp Tools ScreenLets you retrieve MIB objects using Snmp protocol Getting the Next OID Setting an OIDGetting Individual OIDs Viewing Multiple OIDs Walking Through OIDsExiting the Snmp Tools Screen Stepping Through OIDsCycling Through OIDs Device Statistics Screen Device Statistics ScreenDisplays the number of errors due to misaligned packets Selecting the Appropriate Module/Port Module Number SequenceExiting the Device Statistics Screen Using the Enable Port CommandUsing the Disable Port Command EPIM-100TX Appendix a Epim SpecificationsEpim Specifications EPIM-100FX Appendix B Image File Download Using Oids Setting UP a Unix Workstation AS a Tftp Server Standard Local Download Table B-1 OIDs and Settings Index NumericsIndex-2 Power Supply Cord