[c-nsp] Splitting VTP domain without a meltdown

[Jeff Kell]

I'm trying to split a branch building off of the main campus VTP domain and not having much success.

Currently we have one VTP domain that propagates over the main campus.  The goal is to split this into several independent domains to reduce the vlan count and move to L3 distribution, and make the L3 uplink point a VTP server for the new domain.

In a testbed case, I could remove a switch from the domain.  The vlan configuration remained "frozen" and things kept working OK.

In the production case, when I change the VTP domain, the trunks drop back to vlan1 only and things go to hell :-)

Is there a "non-invasive" way to break a building off of a VTP domain without visiting each wiring closet and manually configuring things for the new domain?  Surely there is a "non-forklift" approach to accomplish this task.

Thanks in advance,

Jeff