Connectors and Cables

This appendix describes the cables and connectors that you use to connect to Catalyst 2916 modules.

10BaseT/100BaseTX Module Cabling

The 10/100 module ports are marked with an X, indicating that they have their transmit (TD) and receive (RD) signals internally crossed for attachment of an Ethernet adapter using a straight-through cable.

When connecting the 10/100 ports to 10BaseT or 100BaseTX-compatible servers and workstations, ensure that you use a Category 5 straight-through cable. When connecting to other switches or repeaters, ensure that you use a crossover cable.

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Note Always observe the following general rules when connecting devices: Use a straight-through cable to connect two ports when one of the ports is designated with an X; use a crossover cable to connect two ports when both ports are designated with an X.

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The 10/100 module has RJ-45 connectors on the front panel. Figure B-1 shows the pinout.

Figure B-1: 10BaseT/100BaseTX RJ-45 Connector

The schematics of crossover and straight-through cables are shown in Figure B-2.

Figure B-2: Crossover and Straight-Through Cable Schematics

100BaseFX Module Cabling

The 100BaseFX module uses duplex SC connectors, as shown in Figure B-3.

Figure B-3: 100BaseFX SC Connector