[c-nsp] Mac address flapping..

[A.L.M.Buxey at lboro.ac.uk]

Hi,
> Actualy,
>  My 2 4506s are plugged into the customers, Flat, Default configed, Cisco 3548-XL-EN switch.

are they in the same VTP domain or having trunks fed to them?
those switches are very very old and weak in terms of numbers
of VLANs - especially in PVST mode etc

do you handle the VLANs on the 6506 devices (ie they are the routers?)
if so, have you checked the settings for VLAN 42 - esp. with regard to
HRSRP?


alan