Re: Disabling spanning tree

With respect I already posted that an hour ago. :)

On Thu, Apr 16, 2009 at 10:11 PM, Nick <ccieaz_at_googlemail.com> wrote:

> Tony has a good point:
>
> from the doc CD:
>
> "Enabling BPDU filtering on an interface is the same as disabling spanning
> tree on it and can result in spanning-tree loops. "
>
>
> http://www.cisco.com/en/US/docs/switches/lan/catalyst3560/software/release/12.2_25_see/configuration/guide/swstpopt.html#wp1046220
>
> Nick
>
> 2009/4/16 Tony Varriale <tvarriale_at_flamboyaninc.com>
>
> > There's a 99.999% chance this will not be the correct solution due to
> > another requirement (probably in the 1st or 2nd page of the lab book).
> >
> >
> >
> > Look at my posts, look at the docs. Not sure what else to tell you guys
> > and
> > girls.
> >
> >
> >
> > tv
> >
> >
> >
> > From: Salah ElShekeil [mailto:salah.elshekeil_at_gmail.com]
> > Sent: Thursday, April 16, 2009 3:46 PM
> > To: Jonathan Greenwood II
> > Cc: loopback 99; Tony Varriale; ccielab
> > Subject: Re: Disabling spanning tree
> >
> >
> >
> > the question as it's I didn't change anything
> >
> >
> >
> > portfast won't disable spanning tree even with bpdufilter !
> >
> >
> >
> > but still is it right ""no switchport""?!!!! there is no way other than
> > this?!!
> >
> > On Thu, Apr 16, 2009 at 11:32 PM, Jonathan Greenwood II <
> gwood83_at_gmail.com
> > >
> > wrote:
> >
> > I'm just curious to see if with it enabled on the interface if the port
> > still comes up as FWD under the sh spann-tree. If it comes up as
> Desg/FWD
> > then I would have to scratch my head, because it still says STP is
> > operational based upon the port moving into the Forwarding state. Looks
> > like Ryan just posted the output and it shows STP is still enabled. Any
> > thoughts??? To be safe I guess I'm still going to go with "no
> switchport"
> > Thanks Ryan for the output.
> >
> >
> > Jonathan Greenwood II
> > CCIE #22744
> >
> > On Thu, Apr 16, 2009 at 1:23 PM, loopback 99 <loopback99_at_gmail.com>
> wrote:
> >
> > >
> > >
> > > I think they are looking for BPDU Filter at the interface level. The
> > Cisco
> > > documentation says this about it: 'Caution Enabling BPDU filtering on
> > an
> > > interface is the same as disabling spanning tree on it and can result
> in
> > > spanning-tree loops.'
> > >
> > > L.
> > >
> > >
> > >
> >
> >
> > --
> >
> > Jonathan Greenwood II
> > CCIE #22744
> >
> >
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Received on Thu Apr 16 2009 - 22:22:57 ART