Hey,

I'd like to be able to scan my network and detect if any has plugged in a router (against policy).
I can login to the switch and view the mac addresses, but I haven't been successful in finding a program to identify if the MAC belongs to a linksys router, belkin wireless router, etc.
I can also setup a SPAN port and look at all the traffic, but I'm not sure what to look for to see if someone is using a NAT router off the switch.

Any suggestions?