Diagnosing Problems 1
Verify Switch POST Results 2
Monitor Switch LEDs 2
Verify Switch Connections 2
Bad or Damaged Cable 2
Ethernet and Fiber Cables 2
Link Status 3
PoE Connections 3
Transceiver Module Port Issues 3
Port and Interface Settings 4
Ping the End Device 4
Spanning Tree Loops 4
Monitor Switch Performance 5
Speed, Duplex, and Autonegotiation 5
Autonegotiation and NIC Cards 5
Cabling Distance 5
Clearing the Switch IP Address and Configuration 6
Replacing a Failed Stack Member 6
Finding the Switch Serial Number 7
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Technical Specifications 1
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Connector and Cable Specifications 1
Connector Specifications 1
10/100 and 10/100/1000 Ports 2
100BASE-FX Ports 2
SFP Module Ports 3
XENPAK Module Ports (Catalyst 3750G-16TD Switch) 4
Console Port 4
Cable and Adapter Specifications 5
SFP Module Cable Specifications 5
Two Twisted-Pair Cable Pinouts 6
Four Twisted-Pair Cable Pinouts for 10/100 Ports 7
Identifying a Crossover Cable 8
Four Twisted-Pair Cable Pinouts for 1000BASE-T Ports 8
Crossover Cable and Adapter Pinouts 9
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Connecting to DC Power 1
Connecting to DC Power 1
Preparing for Installation 1
Grounding the Switch 2
Wiring the DC-Input Power Source 4
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