[c-nsp] What causes mac table relearning?

[Mike]

Hi,


     I have a network consisting of 3560g switches and I do not run 
spanning tree in this network. I have noticed a symptom when a vlan 
trunk interface goes down/up,  all mac addresses in the vlans carried by 
that trunk also seem to be cleared at the same time. Im not just talking 
the mac addresses on the port itself; rather, across the other switches 
themselves , even for mac addresses that have no connection to the port 
itself they just happen to be in one of the vlans. If I have missed 
something fundamental I'd love to know but I am not aware of any lan 
switching rules that would require this behavior.


Mike-