Appendix B
Connectors and Cables
Four Twisted-Pair Cable Pinouts for 10/100 Ports
Figure B-12
Figure B-12 Four Twisted-Pair Straight-Through Cable Schematic for 10/100 Ports
Switch
1 RD+
2 RD-
3 TD+
6 TD-
4 NC
5 NC
7 NC
8 NC
Figure B-13 Four Twisted-Pair Crossover Cable Schematic for 10/100 Ports
Switch
1 RD+
2 RD-
3 TD+
6 TD-
4 NC
5 NC
7 NC
8 NC
OL-6156-01
and
Figure B-13
show the schematics of four twisted-pair cables for 10/100 ports.
Router or PC
1 TD+
2 TD-
3 RD+
6 RD-
4 NC
5 NC
7 NC
8 NC
Switch
1 RD+
2 RD-
3 TD+
6 TD-
4 NC
5 NC
7 NC
8 NC
Cable and Adapter Specifications
Catalyst 2950 Switch Hardware Installation Guide
B-7