One Cisco Press book says this about VTP pruning:

"...This means that it restricts broadcasts, mulicasts, and flooded unicast
traffic from switches that do not have ports assigned to that VLAN..."

Anyone one know what, if any, implications this has for OSPF adjacencies? 
Specifically, I'm dealing with a proposed topology where all of the access
switches will have MSFCs.  OSPF will be used to support a multicast
application.  All inter-switch links will be trunked due to a requirement
that any user be able to plug into any wall jack and log into his/her VLAN
(this will be accomplished via User Registration Tool).  So will every MSFC
form an adjacency with every other MSFC on every subnet/VLAN via the
trunks?  Or will a switch without any active users in a given VLAN be pruned
out and thus no adjacency?

I'm guessing the adjacencies will form.  This is good in the context of not
needing to form a new adjacency at such time a new VLAN user plugs in.  It's
bad in the context of how many adjacencies will need to be maintained.

I realize that not every access switch necessarily needs an MSFC to support
multicast.  This isn't my design.  Just my potential problem to deal with...

Thanks all,

Scott




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