Configuring a 2821 with NM-16A as a terminal server

[churchillma]

Can anyone help me with what I'm missing when it comes to configuring a 2821 router with a NM-16A module for a terminal server.

Here is my config

ip routing

!

interface ethernet g0/0

ip address 10.1.1.3 255.255.255.0

!

ip host R1 2065 10.1.1.3

!

ip route 0.0.0.0 0.0.0.0 10.1.1.1

!

int group async 0

encapsulation slip

line 1/0 1/15

!

line aux 0

line 1/0 1/15

no exec

transport input telnet

transport output telnet

I verified the vty lines by using the "show line" command, they were 65-96

Do I need a loopback interface, I didn't think I did, it was just recommended.  Any help would be appreciated.

[Reza Sharifi]

For terminal server, you usually use a loopback interface.

Have a look at this link with config example:

http://ccielab.ro/2009/08/configuring-a-terminal-server/

HTH

[Richard Burts]

While I agree with my colleague Reza that loopback interfaces are frequently used with terminal servers, it is certainly not a requirement. The requirement is really to have a working IP address on the router. So my question to the original poster is whether the address on Gig0/0 is really active. The best way to show this would probably be to post the output of show ip interface brief.

I would also ask the original poster to tell us what cable he is using to connect the async interface to the console of the other router/switch?

HTH

Rick

[churchillma]

Hello. The interface is active and I'm able to access the router remotely in that IP.  As for the cable, I'm using the octal ones. Whatever its called. CAB-OCTAL-ASYNC

[Richard Burts]

Thanks for the additional information.

I have not configured terminal server functionality on a 2821 and so do not have experience to work from. I have configured terminal servers many times and in general it is not a difficult feature to configure.

I would suggest that you remove this line from the configuration and let us know if the behavior changes.

encapsulation slip

HTH

Rick

[flexkikr11]

create loopback interface then assign this ip of yours ip address 10.1.1.3 255.255.255.255 not 255.255.255.0