Cisco Cisco Email Security Appliance C170 Guia Da Instalação

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

Straight-through

Crossover

Cisco does not provide these cables, yet they are widely available from other sources.

 shows the RJ 45 cable.

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

.

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. 

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.

 lists the rolled (console) cable pinouts for RJ-45.

 

H29

3

6

8 7 6 5 4 3 2 1

RJ-45 connector

H566

3

-

1

8

-

-

2

7

-

-

3

6

-