Re: bpdu-filter question

So far as I know bpdufilter will filter both incoming and outgoing
BPDUs...so it essentially is disabling spanning-tree on the port. As far as
enabling it on portfast enabled ports, are you sure you aren't talking about
bpduguard? That is pretty common so that if we get a bpdu on a port that
should be connected to a host we simply shut down the port.

On Wed, Nov 4, 2009 at 10:23 PM, <Keegan.Holley_at_sungard.com> wrote:

> GS,
>
> I recently watched a recorded bootcamp that stated that bpdu filter will
> revert back to the default spanning tree behavior if it sees a bpdu. They
> also say should be enabled on port fast ports to avoid loops. I seem to
> have found conflicting documentation on cisco.com one page states that the
> bpdu's are blocked constantly and the other pretty much agrees with the
> vendor. I tried this on a 3550 running 12.2(40) see2 and bpdu's were
> blocked no matter what. Did this change across code releases/platforms or
> are they just wrong?
>
>
> Heads:
>
> http://www.cisco.com/en/US/docs/switches/lan/catalyst3560/software/release/12.2_44_se/configuration/guide/swstpopt.html#wp1033638
>
> tails:
>
> http://www.cisco.com/en/US/docs/switches/lan/catalyst4000/7.4/configuration/guide/stp_enha.html
>
>
> Blogs and organic groups at http://www.ccie.net
>
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>
>
>
>
>
>
>

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