Cisco Systems Cisco ME 3400 manual Figure A-1 10/100 Port Pinouts

Appendix A Connector and Cable Specifications

Connector Specifications

Figure A-1 10/100 Port Pinouts

Pin Label

1RD+

2RD-

3TD+

4NC

5NC

6TD-

7NC

8NC

1 2 3 4 5 6 7 8

H5318

When connecting 10/100 ports to compatible devices such as servers, workstations, and routers, you can use a two or four twisted-pair straight-through cable wired for 10BASE-T and 100BASE-TX. Figure A-4shows the two twisted-pair straight-through cable schematics. Figure A-6shows the four twisted-pair straight-through cable schematics.

When connecting the ports to other devices, such as switches or repeaters, you can use a two or four twisted-pair crossover cable. Figure A-5shows the two twisted-pair crossover cable schematics. Figure A-7shows the four twisted-pair crossover cable schematics.

Note You can use the mdix auto interface configuration command in the CLI to enable the automatic medium-dependent interface crossover (auto-MDIX) feature. When the auto-MDIX feature is enabled, the switch detects the required cable type for copper Ethernet connections and configures the interfaces accordingly. Therefore, you can use either a crossover or a straight-through cable for connections to a copper 10/100, 10/100/1000, or 1000BASE-T SFP module port on the switch, regardless of the type of device on the other end of the connection.

You can use Category 3, 4, or 5 cabling when connecting to 10BASE-T-compatible devices. You must use Category 5 (or higher) cabling when connecting to 100BASE-TX-compatible devices.

Note Use a straight-through cable to connect two ports only when one port is designated with an X. Use a crossover cable to connect two ports when both ports are designated with an X or when both ports do not have an X.

This applies only to switches on which auto-MDIX is disabled.

Cisco ME 3400 Ethernet Access Switch Hardware Installation Guide

A-2 OL-7677-04