(See attached picture)
I have a 4948-10G acting as a Router for my customers Gateway on Vlan 51
I Trunk Vlan51 and several others to a 3750-12S for GIG SPF L2 aggregation.
from there, I trunk the exact same Vlans to a 3560, and 2 3400M switches for L2 endpoints.
my problem is that i constantly get this syslog message from my 3750-12S:
SW_MATM-4-MACFLAP_NOTIF: Host 001f.ca74.977f in vlan 51 is flapping between port Gi1/0/1 and port Gi1/0/12
Port 1/0/12 is my trunk back to the 4948-10G, and port 1/0/1 is my trunk to the 3560.
the mac address in the log message is the mac address of the VLAN interface on my 4948-10G.
I have absolutely no problems network wise that would indicate that this is a problem. I would like to fix the issue so that my syslog is clean. In all common sense, I would think that it would be NORMAL for the 3750 to see that mac address on both ports, and actually see it on the other two ports going to the 3400M's also but I don't. any ideas??