[c-nsp] MST Experiences: was Re: Dell switches (specifically PowerConnect 7048P) and Ciscos

[Nicolas KARP]

Hello,

MST is a really good ***not*** proprietary protocol.. You just need to
understand how it works and how you can interconnect your regions all
together (not very straightforward I agree)

If you just have independent Layer 2 area's, you can create something like
that (on all your layer 2 domain)

region area1 / area2 / area3 / ...
instance 0 : no vlan (just used to avoid loop between regions)
instance 1 : vlan 1 to 2050
instance 2 : vlan 2051 to 4095

root of instance 0 should be forced somewhere on your network.
root of instance 1 will be core1 on each area
root of instance 2 will be core2 on each area

So if you do that, you just have to pick one vlan from the list (instance 1
or instance 2) and that's it.

Best Regards,

Nicolas.