From: Narbik Kocharians (narbikk@gmail.com)
Date: Tue Feb 27 2007 - 12:57:19 ART
It applies to the ports tat are configured as portfast
On 2/27/07, Shine <shinejoseph@iprimus.com.au> wrote:
>
> So what's the real advantage of enabling bdpuguard on global config?
>
> This document says configuration of bdpu in the global config:
>
http://www.cisco.com/en/US/tech/tk389/tk621/technologies_tech_note09186a00800
9482f.shtml#topic3
>
> Thanks,
> Shine
>
> ----- Original Message -----
> *From:* Narbik Kocharians <narbikk@gmail.com>
> *To:* Prashant Shukla <shukla_cisco@yahoo.co.in>
> *Cc:* Shine <shinejoseph@iprimus.com.au> ; ccielab@groupstudy.com
> *Sent:* Tuesday, February 27, 2007 7:10 PM
> *Subject:* Re: bpdugaurd feature on Glabal configuration
>
>
> That's BPDUFilter and not BPDUGuard. IF the command is used at the global
> level, it's enabled on Port fast enabled interfaces, the command is as
> follows:
>
> Spanning-tree portfast bpduguard default
>
> With BPDUGuard, if the port receives a BPDU, it transitions into
> errdisable mode. There are basically couple things that you can do to bring
> the port back to it's normal (forwarding) state, Shut and no shut, or
> configure the port to automatically recover every so many seconds, as
> follows:
>
> errdisable recovery cause bpduguard
> errdisable recovery inerval 300
>
> In this case the port will automatically recover every 5 minutes (300
> seconds) and if it sees another BPDU, it will transition into errdisable
> mode, and the cycle repeats itself.
>
>
> On 2/26/07, Prashant Shukla <shukla_cisco@yahoo.co.in> wrote:
> >
> > Hey Shine,
> >
> > Per my understanding, BDPU guard of the config mode works in tandem with
> > portfast and when a portfast enabled interface receives a BPDU the port
is
> > transitioned back to the normal "non-portfast" state and goes back to
> > listening/learning etc modes.
> >
> > HTH
> >
> > Shukla.
> > Shine <shinejoseph@iprimus.com.au> wrote: Hi GS,
> >
> > Is there any advantages on enabling the bpduguard feature on a per
> > interface
> > basis rather than in global configuration? Can anyone give me some
> > lights to
> > it?
> >
> > Thanks you,
> > Shine
> >
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>
>
> --
> Narbik Kocharians
> CCIE# 12410 (R&S, SP, Security)
> CCSI# 30832
> Network Learning, Inc. (CCIE class Instructor)
> www.ccbootcamp.com (CCIE Training)
>
>
-- Narbik Kocharians CCIE# 12410 (R&S, SP, Security) CCSI# 30832 Network Learning, Inc. (CCIE class Instructor) www.ccbootcamp.com (CCIE Training)
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