Hello Peter,thanks for the quick reply.preallocating 4000 vlans isn't the issue anyway since 2960 switches only support 128 vlan instances.VTPv3 could be an option... as it also would take care of the other problem I was thinking about:Moving one vla...

hello,coming back to this old discussion as I have similar questions...I'm running a L2 ring with 2960G switches and quite a few vlans for my different customers.I'm still using PVST and would like to migrate to RPVST or MST.MST looks interesting as ...