When I started with my CCIE Journey, I had some 2511 to make sure I had remote console access. For my current lab I had to configure a NM-16A in an ISR router. How to set it up? Of course there is good documentation to Configure a Terminal but not everything was in that post.
The NM-16A is an async module for an ISR with 16 connections. First of all, let’s check if there is a NM-16A module in the router with the following command:
This was just a snippet.
The following configuration is working for me. I like to have a password on the lines.
To configure a name to connect to a console port, you must know the line numbers. Here you see all the lines of the ISR:
To connect to line 0/1/0 you see the number 2 as line number. You can connect to the loopback address of the router on port 2000 + line number. In this case it will be 2002.
The ip address 18.104.22.168 is the loopback 0 interface of the router.
Connect to another router via the async line.
To open a console connection to the ASA, I easily can type ASA and it will connect to loopback address on port 2002.
During the session on the ASA, when you hit CTRL+SHIFT+6 / X you will return to the router and the session is still open.
Whit show sessions you see the sessions that are open and you can switch between them.
To reset the line, you can disconnect the correct line number.
ISR4300_Console#disconnect 1 Closing connection to asa [confirm]
To verify all connections are closed:
ISR4300_Console#sh sessions % No connections open ISR4300_Console#