Re: bpduguard question

Basically what the command does globally is says "if you enable portfast on
an interface, also turn on bpduguard." The reason is because if you have
portfast turned on an interface it is generally also a good candidate to be
running bpduguard. In other words, it doesn't connect to any kind of switch
ideally, so IF you get a BPDU on the port, something is generally happening
that should not be.

The command does NOT automatically put bpduguard on an interface...only if
you already have enabled portfast. check the command ref.

On Thu, Sep 10, 2009 at 3:21 PM, Mark Matters <markccie_at_gmail.com> wrote:

> If you enable this on the interface level you do not need to have portfast
> enabled.
>
> Take a look at the command reference on the doc cd.
>
>
> *As I learn more I remember less. I guess my token bucket is rather small.
> *
>
>
>
> On Thu, Sep 10, 2009 at 2:44 PM, Erik Witkop <ewitkop_at_gmail.com> wrote:
>
> > Entered globally:
> > Spanningtree portfast bpduguard default
> >
> >
> > I have a few questions about this command. When the command is entered,
> it
> > seemingly has no effect. But once you turn on portfast on the interface
> > level, BPDUguard is now working.
> >
> > What does bpduguard have to do with portfast? It seems that they are two
> > separate technologies.
> >
> >
> > Blogs and organic groups at http://www.ccie.net
> >
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Joe Astorino - CCIE #24347 R&S
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