Cabletron Systems SmartSTACK ETHERNET ELS10-27 User Manual

Contents

ContentsxiiiCHAPTER 5 SMARTSTACK ETHERNET ELS10-27DIAGNOSTICS AND TROUBLESHOOTING5.1 Power-up Diagnostics .............................................................................5-15.1.1 Power-up LED Sequence ..............................................................5-15.1.2 Specific Power-up Tests ................................................................5-25.1.3 Power-up Diagnostics Results .....................................................5-25.2 Responses to Failures at Power-up .......................................................5-25.3 Status and Activity Indicators................................................................5-35.4 Troubleshooting .......................................................................................5-55.5 SmartSTACK Ethernet ELS10-27 Does Not Power Up.......................5-55.5.1 Connectivity Problems..................................................................5-55.5.2 SmartSTACK Ethernet ELS10-27 Has Rebooted .......................5-55.5.3 SmartSTACK Ethernet ELS10-27 Does Not Respondto NMS ............................................................................................5-6APPENDIX A TECHNICAL SPECIFICATIONSA.1 SmartSTACK Ethernet ELS10-27 Specifications................................A-1A.2 Serial Cable Pin Assignments ..............................................................A-3A.3 10BASE-T Pin Assignments..................................................................A-4A.4 Straight-through Wiring .......................................................................A-5A.5 Crossover Wiring ...................................................................................A-5A.6 5 - 4 - 3 Rule.............................................................................................A-6A.7 EPIM-100FX ............................................................................................A-6