cdp neighbor not showing neighbor

[ceeleelewis]

quick question... I have two routers plugged into two ports on a single switch.. when I type sh cdp neighbor on the switch, I only see information on one of the two routers. I know that I enabled cdp on both of the routers and the switch. Also when I check the running config on the switch, the designated ports are set up the same way. Is there somethign else I check or do I have to enable cdp for this single port (FastEthernet0/3). And if so, I thought cdp was a global setting, once in config mode, isn't the 'run cdp' command sifficent for a global cdp command.

 

[baddos]

Check on the router's interface the cdp isn't disabled. It is globally and per interface.

-Bad Dos

 

[bhaydon]

CDP should be on by default. Enter console on the router that is not seen by the switch and try to run the CDP command there. You may have a problem with your cabling or you have not turned on the interface on that specific router. Please post your solutions because I am very interested in seeing what happened.