Cisco 3750 - Manual (Page 70)

B-8
Catalyst 3750 Metro Switch Hardware Installation Guide
OL-9160-02
Appendix B Connector and Cable Specifications
Cable and Adapter Specifications
Identifying a Crossover Cable
To identify a crossover cable, compare the two modular ends of the cable. Hold the cable ends
side-by-side, with the tab at the back. The wire connected to the pin on the outside of the left plug should
be the same color as the wire connected to the pin on the outside of the right plug. (See
Figure B-9 .)
Figure B-9 Identifying a Crossover Cable
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
a Cisco Metro Catalyst 3750 switch.
Figure B-10 Four Twisted-Pair Straight-Through Cable Schematic for 10/100/1000 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- 65272