Cisco 3845 Reverse Telnet

Unanswered Question
Oct 5th, 2009

Hi Everyone,

Would like to ask if anybody knows how to use reverse telnet in a Cisco 3845 router. Appreciate any help.

Thanks much!

I have this problem too.
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Giuseppe Larosa Mon, 10/05/2009 - 05:18

Hello Napoleon,

reverse telnet is a way to provide terminal server services

you need

A/S serial lines to be used to connect other devices' console ports to them or modems

the appropriate cables.

reverse telnet is part of this solution and allows to open a session on a line (an async line) when telnetting to a specific TCP port using a loopback address

TCP port = 2000 + line#

line numbers can be seen with

sh line

ip hosts command can be used:

ip host hostname 2004 10.99.0.51

see

http://www.cisco.com/en/US/docs/ios/12_0/dial/configuration/guide/dcrtelnt.html

Hope to help

Giuseppe

napd Mon, 10/05/2009 - 05:30

Hi Giuseppe,

Thanks, but I believe I can use the router's aux port for reverse telnet, I just don't know the port number to use for the 3845. I used 2001 for a cisco 7200 but it doesn't work for 3845.

thanks,

nap

napd Mon, 10/05/2009 - 05:42

Thanks Giuseppe. Never mind, port 2001 works now, not sure what happened there! thanks a lot again!

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