Solved: Cisco 881 CON/AUX port outgoing connection

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noring🇦🇫

Cisco 881 CON/AUX port outgoing connection

How do I get an outgoing connections from the aux port on a Cisco 881. I want to connect to the console port of a Cisco 1841 from the 881. The 881 doesn't have a dedicated aux port, but aparently has a "virtual aux" port on the con port.

On the 881 I do the normal:
conf t
int loopback0
ip add 10.0.0.1 255.255.255.0
no shut
int aux 0
transport input all

and then "telnet 10.0.0.1 2001" and get "Trying 10.0.0.1, 2001 ... Open". But then nothing. It seems the console port on the 881 might win and get in the way. Do I need to disable that somehow? I use a standard cisco console crossover cable (not ethernet) from the con/aux on the 881 to the con on the 1841. (1-8, 2-7, 3-6, 4-5, 5-4, 6-3, 7-2, 8-1) Do I need a different cable?

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Istvan Kalmar🇭🇺

hmm

the cable is good, please provide us:

show line

noring🇦🇫

ASKER

Router#show line
Tty Typ Tx/Rx A Modem Roty AccO AccI Uses Noise Overruns Int
0 CTY - - - - - 0 4 23361/0 -
* 1 AUX 9600/9600 - - - - - 10 0 0/0 -
* 2 VTY - - - - - 14 0 0/0 -
* 3 VTY - - - - - 6 0 0/0 -
4 VTY - - - - - 0 0 0/0 -
5 VTY - - - - - 0 0 0/0 -
6 VTY - - - - - 0 0 0/0 -

Router#
Router#who
Line User Host(s) Idle Location
1 aux 0 idle 00:10:55 10.0.0.1
2 vty 0 10.0.0.1 00:10:53 xxx
* 3 vty 1 idle 00:00:00 xxx

Then after a reboot (as I think the 9600/9600 is from some tweaking I did)

Router#show line
Tty Typ Tx/Rx A Modem Roty AccO AccI Uses Noise Overruns Int
0 CTY - - - - - 0 1 3663/0 -
* 1 AUX 0/0 - - - - - 1 0 0/0 -
* 2 VTY - - - - - 2 0 0/0 -
* 3 VTY - - - - - 1 0 0/0 -
4 VTY - - - - - 0 0 0/0 -
5 VTY - - - - - 0 0 0/0 -
6 VTY - - - - - 0 0 0/0 -

noring🇦🇫

ASKER

Actually that last output was from a Cisco 871. The output from Cisco 881 with same config (and same result) is:

Router#show line
Tty Typ Tx/Rx A Modem Roty AccO AccI Uses Noise Overruns Int
0 CTY - - - - - 0 0 0/0 -
* 1 AUX 0/0 - - - - - 1 0 0/0 -
3 TTY - - - - - 0 0 0/0 Ce0
4 ??? - - - - - 0 0 0/0 -
* 6 VTY - - - - - 3 0 0/0 -
* 7 VTY - - - - - 1 0 0/0 -
8 VTY - - - - - 0 0 0/0 -
9 VTY - - - - - 0 0 0/0 -
10 VTY - - - - - 0 0 0/0 -

Line(s) not in async mode -or- with no hardware support:
2, 5

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ASKER CERTIFIED SOLUTION

Jody Lemoine🇨🇦

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