Posts Tagged ‘CEF’

Want to know what subnets are being discovered/learned off a specific interface? The the show ip cef [interface]

wan-gw1#show ip cef ser2/0
0.0.0.0/0
nexthop 10.129.23.65 Serial2/0
10.16.0.0/12
nexthop 10.129.23.65 Serial2/0
10.32.0.0/16
nexthop 10.129.23.65 Serial2/0
.....Lines omitted for brevity

Just that simple, just remember the purpose of CEF, if you forgot, read: Cisco IP CEF Overview