[c-nsp] Q. About spanning tree (pvst) behavior on hybrid cat6500

[Matt Stockdale]

Hello -

  Just a brief question about how spanning tree (pvst) behaves on a
hybrid cat6500 (running catos 7.6.9 for argument).

 Let's say that 

a) this 6500 is a core switch, with many (50+) 802.1q trunks to access
switches (2950's)
b) There is another core 6500, to which all vlan's are trunked, except 
vlan 100.

My question is this. If the MSFC2 in said 6500 has a vlan100 interface
configured, and a server connected directly to the 6500 in vlan100, Will
it retain connectivity to the server (and vice versa) in the event that
the second core switch fails, causing the 6500 in question to reconverge
all of the spanning tree instances?

Second, does the answer change if instead of being directly connected to
the 6500, it's connected to a 2950 that is then connected to the 6500?
(not with a trunk, just running as a "unmanaged" switch, with it's
"vlan1" uplink into a port on the 6500 configured as vlan100).

And finally, what if vlan100 _is_ trunked to the other core switch? Will
the 6500 be smart enough to unblock vlan100 on the virtual trunk to it's
own MSFC while it may be blocking it on any other trunks?

Thanks in advance for your help, or pointers to the documentation I
overlooked which clearly answers this :)

Matt