MST Configuration Question

I have set up a lab to test migratation from PVST to MST. The lab will use
VLAN 1-1005; private VLANs are not used. For the first test phase, all
active VLANs will be placed in Instance 1 (no load balancing).

I have read some conflicting information on best practice for configuring
MST and I'm hoping someone can offer their opinion:

One method says to configure "as few VLANs as possible" in Instance 0 and
as many as requird in the remaining Instances. For Example:

spanning-tree mode mst
spanning-tree configuration
 name Cisco
 version 10
 instance 1 vlan 1-4094
spanning-tree mst 0-1 priority 24576
(MST0 - no vlan; MST1 - vlan 1-4094)

The other method says to put only the used VLANs in Instance 1-64, leaving
the non-used VLANs in Instance 0. For Example:

spanning-tree mode mst
spanning-tree configuration
 name Cisco
 version 10
 instance 1 vlan 1-1005
spanning-tree mst 0-1 priority 24576
(MST0 - 1006-4094; MST1 - vlan 1-1005)

Which configuration would be "more correct"? Does anyone have a good link
where I can get more information?

Thanks,
Chuck

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Received on Tue Oct 16 2012 - 13:29:45 ART