user manual

Contents
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Cisco ME 3400 Ethernet Access Switch Hardware Installation Guide
OL-7677-04
CHAPTER 3 Troubleshooting 3-1
Diagnosing Problems 3-1
Check Switch POST Results 3-1
Check Switch LEDs 3-2
Check Switch Connections 3-2
Bad or Damaged Cable 3-2
Ethernet and Fiber Cables 3-2
Link Status 3-2
SFP Module Port Issues 3-3
Port and Interface Settings 3-3
Ping the End Device 3-3
Spanning Tree Loops 3-3
Check Switch Performance 3-4
Speed, Duplex, and Autonegotiation 3-4
Autonegotiation and NIC Cards 3-4
Cabling Distance 3-4
How to Clear the Switch IP Address and Configuration 3-4
Locating the Switch Serial Number 3-5
APPENDIX A Connector and Cable Specifications B-1
Connector Specifications B-1
10/100 Ports B-1
SFP Module Ports B-3
Dual-Purpose Ports B-3
Console Port B-3
Cable and Adapter Specifications B-4
SFP Module Cable Specifications B-4
Two Twisted-Pair Cable Pinouts B-5
Four Twisted-Pair Cable Pinouts for 1000BASE-T Ports B-6
Crossover Cable and Adapter Pinouts B-6
Identifying a Crossover Cable B-6
Adapter Pinouts B-7
APPENDIX B Technical Specifications A-1
APPENDIX C Connecting to DC Power C-1
Preparing for Installation C-1
Grounding the Switch C-2