Cisco CISCO7201 - Page 134

A-8
Cisco 7201 Installation and Configuration Guide
OL-11364-04
Appendix A Specifications
Gigabit Ethernet RJ-45 Port Pinouts
Figure A-3 Four Twisted-Pair Crossover Cable Schematics for 10/100/1000 and 1000BASE-T SFP
Module Ports
Figure A-4 Ethernet, Fast Ethernet Pinouts—Straight-Through or Crossover Cable
To determine whether a UTP cable is a crossover cable or a straight-through cable, hold the two RJ-45
connectors next to each other so you can see the colored wires inside the ends, as shown in
Figure A-5.
1 Router 2 Hub
1 TPO+
2 TPO-
3 TP1+
6 TP1-
1 TP0+
2 TP0-
3 TP1+
6 TP1-
4 TP2+
5 TP2-
7 TP3+
8 TP3-
4 TP2+
5 TP2-
7 TP3+
8 TP3-
129088
1 2
1 Straight-through cable pinout, Ethernet port to
a hub or repeater
4 Hub
2 Crossover cable pinout, Ethernet port to a
DTE
5 DTE
3 Ethernet port
1 TxD+
2 TxD–
3 RxD+
6 RxD–
1 RxD+
2 RxD–
3 TxD+
6 TxD–
57607
1 TxD+
2 TxD–
3 RxD+
6 RxD–
1 TxD+
2 TxD–
3 RxD+
6 RxD–
1 2
3 34 5