[nsp] vlans and VTP

[rpcbind at speakeasy.net]

> So a password will keep an accidental switch (that happened to have the 
> same domain) from wiping things out, but what happens when the VTP server 
> goes down or dies and is replaced?

This is why the 'switch w/ higher vtp revision' is a problem -- there is no 
single root vtp server. Instead, each server has a copy of the database and 
when updates are made, it bumps the revision and the other servers grab it. 
(ie. you can make vlan database changes on _any_ vtp server and the changes 
will be replicated across the domain).

http://www.cisco.com/en/US/tech/tk389/tk689/technologies_tech_note09186a0080094c52.shtml#vtp_mode