Network Router User Manual

3-22
Cisco 2600 Series Routers Hardware Installation Guide
OL-2171-06
Chapter 3 Installing the Router
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 Figure 3-25.) If your cable came 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 3-25 Identifying a Rollover Cable
S
E
E
M
A
N
U
A
L
B
E
F
O
R
E
IN
S
T
A
L
L
A
T
I
O
N
S
E
R
IA
L
1
S
E
R
IA
L
0
C
O
N
N
C
O
N
N
W
I
C
2
A
/
S
S
E
E
M
A
N
U
A
L
B
E
F
O
R
E
IN
S
T
A
L
L
A
T
I
O
N
S
E
R
I
A
L
1
S
E
R
IA
L
0
C
O
N
N
C
O
N
N
W
I
C
2
A
/
S
C
isco 2611
100-240V– 1A
50/60 Hz 47 W
W
0
AUX
CONSOLE
ETHERNET 0
ACT
LINK
ACT
ETHERNET 1LINK
Modem cable
AUX port (RJ-45)
Modem
H11492
RJ-45 to DB-25 adapter
EIA/TIA-232
Pin 1
Pin 8
H3824
Pin 1 and pin 8
should be the
same color