James, . (I have a pair doing redundant gateways for a DataCenter network) > > %MAC_MOVE-SP-4-NOTIF: Host 00d0.009e.2400 in vlan 42 is flapping > between port Po1 and port Gi1/7 > > I see about 20 of these for this one vlan each minute.
the mac is 6509-b and pps==20/minute is probably HSRP hello packet from Vlan42 on 6509-b. if there are no topo changes in stp there must be a unnoticed L2 loop, either forgotten portfast or bpdu filtering between 6509-a,-b and 4506-a. perhaps try to disconnect the customer completely during a maintenance window and double check all your connections. Best Regards, -mat _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
