I'm getting lots of messages on a router IGRP-IPv4:(50)(Default-IP-Routing-Table:50): Neighbor 10.13.1.251 not on common subnet for Vlan11
i tried to ping but 10.13.1.251 doesnt respond
show ip route shows 10.13.1.251 is directly connected on Vlan1. This must be off one of the trunk ports but how can i find out which port this neighbor connects on so i can fix the problem?
vlan 11 is 10.20.1.0 255.255.255.0.
Vlan 1 is 10.13.1.0 255.255.255.0.
So something is misconfigured with wrong ip address, but i can't see what it is or where it connects to be able to fix. If i could find MAC address of device i could trace to a port and console on - any ideas?
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