Cisco Systems Catalyst 2955 Manual De Usuario

Appendix B Connectors and Cables

Cable and Adapter Specifications

B-8

Catalyst 2955 Hardware Installation Guide

78-14944-03

Four Twisted-Pair Cable Pinouts for 1000BASE-T Ports

Figure B-10

and

Figure B-11

show the schematics of four twisted-pair cables for

10/100/1000 ports on Catalyst 2955T-12 switches and 1000BASE-T ports.

Figure B-10

Four Twisted-Pair Straight-Through Cable Schematic for
10/100/1000 and 1000BASE-T Ports

Figure B-11

Four Twisted-Pair Crossover Cable Schematics for 10/100/1000
and 1000BASE-T Ports

1 TPO+

2 TPO-

3 TP1+

6 TP1-

1 TP1+

Switch

Router or PC

2 TP1-

3 TPO+

6 TPO-

4 TP2+

5 TP2-

7 TP3+

8 TP3-

4 TP3+

5 TP3-

7 TP2+

8 TP2-

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1 TPO+

2 TPO-

3 TP1+

6 TP1-

1 TP0+

Switch

2 TP0-

3 TP1+

6 TP1-

4 TP2+

5 TP2-

7 TP3+

8 TP3-

4 TP2+

5 TP2-

7 TP3+

8 TP3-

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