Reverse Telnet over AUX Port

sbrunst · ‎04-15-2008

Hi @ all

I think,it is a easy question.

Is it possible to start a reverse telnet session over the aux port from a Cisco 2821 Router to a Console Port from a Non-Cisco Device (for Example a Lantronix Console Server)???

If yes, which parameters are necessary for ths scenario?

Thank for your help!

Stephan

mohammedmahmoud · ‎04-15-2008

Hi Stephan,

Yes, but you need to know the pin assignment and the appropriate baud rate.

BR,

Mohammed Mahmoud.

sbrunst · ‎04-15-2008

Hi Mohammed,

the baud rate is 9600 und a normal Cisco Console Cable works on the console port of the console server.

I used an normal Cisco Console Cable and a rolled Cable for the connection between the Cisco 2821 and the Lantronix Console Server.

But it doesn't work with "telnet 2001".....the AUX Port is Line 1.

This is the current config from the aux port:

interface Loopback0

ip address 192.168.1.254 255.255.255.0

!

line aux 0

modem InOut

transport input all

speed 9600

stopbits 1

!

Best regards,

Stephan Brunst

mohammedmahmoud · ‎04-15-2008

Stephan,

Can you please try to add "no exec" under the line aux 0, then clear the line a couple of times and try again.

BR,

Mohammed Mahmoud.

aclaughan · ‎04-15-2008

The

modem InOut

is not required..

add

no exec

you might need to clear the line and hit return once connected.

Alan

sbrunst · ‎04-15-2008

Thanks a lot.

"No modem InOut" and "no exec" and it works....

Stephan