[c-nsp] pvst+ & r-pvst (WAS Re: mst & pvst)

[Peter Rathlev]

On Tue, 2008-03-25 at 17:53 -0400, Adam Greene wrote:
> OK, I made my way into the 6509, and it's not running MST as expected, but
> PVST+. Duh ... the configs say "set spantree mode pvst+" so I should have
> known.
> 
> Anyways.
> 
> So ...
>     6509: PVST+
>     3750: rapid-PVST
> 
> My impression is that the 3750 will fall back to 802.1D in this scenario, 
> which means slower convergence, but otherwise things will work OK.
> 
> Any gotchas I should be aware of before I try this (besides checking the 
> topology and adjusting priorities as needed)?

Nope, Rapid PVST is backwards compatible with PVST+, so just slower
convergence on the PVST links.

Regards,
Peter