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Using CISCO IOS AUX port to access the console port on another device (reverse telnet) May 16, 2009

Posted by daakeung in Uncategorized.
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Setup a loopback interface:

int lo 1
ip address 10.1.1.1 255.255.255.255

line aux 0
transport input telnet
speed 9600

To access the aux interface, you telnet to the loopback address on port 2000+line#

for example:

sh line
Tty Typ     Tx/Rx    A Modem  Roty AccO AccI   Uses   Noise  Overruns   Int
0 CTY              –    –      –    –    –      0       0     0/0       –
I    1 TTY              – inout     –    –    –      0       0     0/0       –
5 AUX   9600/9600  – inout     –    –    –      0       0     0/0       –
*    6 VTY              –    –      –    –    –     78       0     0/0       –
7 VTY              –    –      –    –    –      2       0     0/0       –
8 VTY              –    –      –    –    –      0       0     0/0       –
9 VTY              –    –      –    –    –      0       0     0/0       –
10 VTY              –    –      –    –    –      0       0     0/0       –

telnet 10.1.1.1 2005

***UPDATED***

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