Re: Basic q regarding STP initial convergence

What will happen when you boot all your switches at the same time?

Best regards,
Dan

On Sat, Aug 8, 2009 at 4:25 PM, Roy Waterman <roy.waterman_at_gmail.com> wrote:

> Hi all
> In several texts I've read that switches upon convergence each think they
> are the root bridge AND send config pdus out all ports.
> However in Cisco's implementation, with the intial blocking state being 20
> secs, and having the ability to only receive config pdus from neighboring
> switches,
> while each switch upon initial convergence may THINK they are the root
> bridge is it true that in general they do not have a chance to advertise
> that as a result of possibly receiving a better bpdu from a neighboring
> switch?
>
> Plus, was the initial 20 sec blocking state proposed by Cisco to actually
> allow switches enough time to learn the identity of the root bridge before
> sending bpdus of their own?
>
> Please advise.
>
> --
> Regards
> Roy
>
>
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Received on Sat Aug 08 2009 - 21:35:14 ART