Identifying A Rollover Cable - Cisco 3700 Series Hardware Installation Manual

Chapter 3 Installing the Router
Figure 3-27
AUX port
connector
(RJ-45)

Identifying a Rollover Cable

Use a rollover cable to connect to the asynchronous serial console and auxiliary ports. You can identify
a rollover cable by comparing the two modular ends of the cable. Holding the cables 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
from Cisco, pin 1 will be white on one connector, and pin 8 will be white on the other (a rollover cable
reverses pins 1 and 8, 2 and 7, 3 and 6, and 4 and 5).
Figure 3-28
OL-2180-08
Connecting a Modem to the Auxiliary Port on a Cisco 3745 Router
Modem
Identifying a Rollover Cable
Pin 1 and pin 8
should be the
same color
Pin 1
Connecting to a Console Terminal or Modem
Figure
Pin 8
Cisco 3700 Series Routers Hardware Installation Guide
3-28.) If your cable came
3-25