Cisco Systems CISCO7201 manual Router, Dte

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

	1		2
1	TPO+	1	TP0+
2	TPO-	2	TP0-
3	TP1+	3	TP1+
6	TP1-	6	TP1-
4	TP2+	4	TP2+
5	TP2-	5	TP2-
7	TP3+	7	TP3+
8	TP3-	8	TP3-

129088

1Router

Figure A-4

1

3

1TxD+

2TxD–

3RxD+

6RxD–

2Hub

Ethernet, Fast Ethernet Pinouts—Straight-Through or Crossover Cable

		2
4	3	5
1 RxD+	1 TxD+	1 TxD+
2 RxD–	2 TxD–	2 TxD–
6 TxD–	6 RxD–	6 RxD–	57607
3 TxD+	3 RxD+	3 RxD+

1	Straight-through cable pinout, Ethernet port to	4	Hub
	a hub or repeater
2	Crossover cable pinout, Ethernet port to a	5	DTE
	DTE
3	Ethernet port

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.

Cisco 7201 Installation and Configuration Guide

A-8 OL-11364-04