David Hughes wrote:
On 15/07/2009, at 8:02 AM, Phil Mayers wrote:

R-PVST + manual VLAN management works like a charm here.

..... works like a charm until it doesn't. Any PV based STP will not work in a dense server virtualisation environment. So these days

I'm glad it works for you, I really am. But I'm definitely not interested in getting into a food fight about which STP protocol is "better" ;o)

In all seriousness, both MST and PVST are an appropriate tool for some jobs, and not for others. Few of the jobs I've personally come across were suited to MST, hence I have a better opinion of PVST, but it's just that - an opinion. There's no absolute right or wrong here.

Hopefully the info presented in the thread will help the OP choose which is appropriate for them.

The point that lower-end switches have serious instance limitations is a good one though - especially (as you later describe) when doing top-of-rack switching and hundreds of VLANs.
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