[c-nsp] MST/IEEE 802.1s - adding a VLAN will impact traffic forwarding ?

[Phil Mayers]

Mark Zipp wrote:
> Hi,
> 
> I'm wondering if anybody has an update or any fresher opinions on the
> the following thread, regarding having to try to synchronise MST VLAN
> additions/removes on multiple devices at once to try to avoid
> impacting traffic forwarding for existing VLANs. We're about to face
> the same problem, and I'm wondering if Steinar Haug's advice to use
> Rapid PVST is still valid. I'd expect we'd be running 50 to 100 VLANs

We use it for many more vlans than that with no problems. We use it in 
preference to MST for that reason and others: including the fact that 
the ciscos can only run one MST "process" so your MST cloud has to 
propagate across your entire network if you are running a collapsed 
core+distribution layer (as we are).

I am frankly unimpressed with MST