From: Rich Collins (nilsi2002@gmail.com)
Date: Thu Oct 25 2007 - 12:14:27 ART
Hi Tarun,
I don't have immediate access to any switches so I was wondering as Nicky
asked whether there are any other caveats with mixing PVST+ and RSTP
switches together (other than UplinkFast and BackboneFast)?
thanks
Rich
On 10/24/07, Tarun Pahuja <pahujat@gmail.com> wrote:
>
> Nicky,
>
> Rapid-PVST uses the existing configuration for PVST+; however, Rapid-PVST
> uses RSTP to provide faster convergence. Independent VLANs run their own
> RSTP instance.
>
> Dynamic entries are flushed immediately on a per-port basis upon receiving
> a
> topology change.
> UplinkFast and BackboneFast configurations are ignored in Rapid-PVST mode;
> both features are included in RSTP.
>
> HTH,
> Tarun Pahuja
> CCIE#7707(R&S,Security,SP,Voice,Storage),CCSI
>
>
> On 10/24/07, nicky noname <cisco2study@gmail.com> wrote:
> >
> > Hello,
> > Hello,
> >
> > I am wondering if people have played much with Rapid PVST+. I plan to
> lab
> > it
> > up today, but It would be good to hear of possible problems running
> PVST+
> > and rapid PVST+ side by side. I have been reading about it and it seems
> to
> > be pretty straight forward. You need to enable the spanning tree mode
> > globally though right.......you can't just do this for one vlan.
> > .......and
> > what happens when you want each switch to be backup roots for each other
> (
> > one is running in PVST+ and the other in Rapid PVST+)..........can you
> do
> > that?
> >
> > Thanks
> >
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