Table Of Contents

Cable Pinouts

10BaseT and 100BaseTX Connectors

Console Port (RJ-45)

RJ-45 to DB-9 or DB-25 Serial Cable

Failover Cable Pinouts

Cable Pinouts

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The appendix provides the following pinout information:

•10BaseT and 100BaseTX Connectors

•Console Port (RJ-45)

•RJ-45 to DB-9 or DB-25 Serial Cable

•Failover Cable Pinouts

10BaseT and 100BaseTX Connectors

The 10BaseT and 100BaseTX ports use standard RJ-45 connectors. The 10BaseT and 100BaseTX ports have their transmit (TD) and receive (RD) pairs internally crossed.

Figure A-1 shows the 10BaseT and the 100BaseTX connector (RJ-45).

Figure A-1 RJ-45 10BaseT and 100BaseTX Connector

Table A-1 shows the connector pinout.

Table A-1 10BaseT and 100BaseTX Connector (RJ-45) Pinouts

Pin	Description
1	TX+
2	TX-
3	RX+
4	-
5	-
6	RX-
7	-
8	-

Console Port (RJ-45)

Cisco products use the following three types of RJ-45 cables:

•Straight-through

•Crossover

•Rolled

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Note Cisco does not provide these cables; they are widely available from other sources.

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Figure A-2 shows the RJ 45 cable.

Figure A-2 RJ-45 Cable

To identify the RJ-45 cable type, hold the two ends of the cable next to each other so you can see the colored wires inside the ends, as shown in Figure A-3.

Figure A-3 RJ-45 Cable Identification

Examine the sequence of colored wires to determine the type of RJ-45 cable, as follows:

•Straight-through—The colored wires are in the same sequence at both ends of the cable (see Table A-2).

•Crossover—The first (far left) colored wire at one end of the cable is the third colored wire at the other end of the cable (see Table A-3).

•Rolled—The colored wires at one end of the cable are in the reverse sequence of the colored wires at the other end of the cable (see Table A-4).

Table A-2 RJ-45 Straight-Through (Ethernet) Cable Pinouts

Signal	Pin	Pin	Pin
TX+	1	1	TX+
TX-	2	2	TX-
RX+	3	3	RX+
-	4	4	-
-	5	5	-
RX-	6	6	RX-
-	7	7	-
-	8	8	-

Table A-3 RJ-45 Crossover (Ethernet) Cable Pinouts

Signal	Pin	Pin	Pin
TX+	1	3	RX+
TX-	2	6	RX-
RX+	3	1	TX+
-	4	4	-
-	5	5	-
RX-	6	2	TX-
-	7	7	-
-	8	8	-

Table A-4 RJ-45 Rolled (Console) Cable Pinouts  

Signal	Pin	Pin	Pin
-	1	8	-
-	2	7	-
-	3	6	-
-	4	5	-
-	5	4	-
-	6	3	-
-	7	2	-
-	8	1	-

RJ-45 to DB-9 or DB-25 Serial Cable

Table A-5 lists the cable pinouts for RJ-45 to DB-9 or DB-25.

Table A-5 Cable Pinouts for RJ-45 to DB-9 or DB-25

Signal	RJ-45 Pin	DB-9 Pin	DB-25 Pin
RTS	8	8	5
DTR	7	6	6
TxD	6	2	3
GND	5	5	7
GND	4	5	7
RxD	3	3	2
DSR	2	4	20
CTS	1	7	4

Failover Cable Pinouts

Figure A-4 shows the pinouts of a crossover cable, should you use this with the Stateful Failover dedicated interface.

Figure A-4 Stateful Failover Dedicated Interface Crossover Cable Pinouts

Should you need to test the cable you received, the pinouts are shown in Figure A-5.

Figure A-5 Failover Serial Cable Pinouts

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Note Pins 11 and 12 on the primary side are looped.

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