Connecting to a Console Terminal or Modem
Figure 3-24 Connecting a Modem to the Auxiliary Port
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. Hold 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
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 3-25 Identifying a Rollover Cable
Cisco 2600 Series Routers Hardware Installation Guide
3-22
LINK
ETHERNE T 1
ACT
LINK
ETHERNE T 0 ACT
CONSOLE
AUX port (RJ-45)
Modem cable
RJ-45 to DB-25 adapter
Pin 1 and pin 8
should be the
same color
Pin 1
Cisco 2611
100-240V – 1A
50/60 Hz 47 W
W0
AUX
Modem
EIA/TIA-232
Figure
Pin 8
Chapter 3
Installing the Router
3-25.) If your cable came from
OL-2171-06