i have 2 6509 and from each one link with fiber optice is goint to a site to 3550.
6509 1----------------|
|3550
6509 2----------------|
switch 1 has IP 15.0.60.251 and at 3550 its 252
switch 2 has IP 15.0.61.251 and at 3550 its 252
i am getting the following message every minute,anybody can explain it.
14:24:56: IP-EIGRP: Neighbor 15.0.60.251 not on common subnet for Vlan181 (15.0.61.251 255.255.255.0)