RE: Spanning-tree

I have four switches trunked together and wanted to know how to keep switch 1 from every becoming root without using the priority command. I hope this helps.

---- "Haas wrote:
> Yes, but effectively it would prevent the other switch from seizing root bridge. I think that is what he was looking for...
> Otherwise maybe
>
> spanning-tree vlan x-y root primary !
>
> priority command is not used there either.
>
> I guess it depends on the point of view of which switch you are configuring... and what order they are patched in to each other, etc... rootguard seems the simplest solution.
>
> Maybe dsl152 can fill us in on more specifics...
> -Brad
>
> -----Original Message-----
> From: nobody_at_groupstudy.com [mailto:nobody_at_groupstudy.com] On Behalf Of aaron1_at_gvtc.com
> Sent: Tuesday, January 18, 2011 2:47 PM
> To: Haas, Brad
> Cc: ccielab_at_groupstudy.com; Ronnie Angello; dls152_at_cox.net
> Subject: Re: Spanning-tree
>
> wouldn't rootguard cause the switch that rootguard is config'd on to then partition (isolate) that switch that is attempting to become root? is that what you (dsl152) were trying to accomplish? block/shutdown that switch that is attempting to become root?
>
>
>
> ----- Original Message -----
> From: "Brad Haas" <bradh_at_presidio.com>
> To: "Ronnie Angello" <ronnie.angello_at_gmail.com>, dls152_at_cox.net
> Cc: ccielab_at_groupstudy.com
> Sent: Tuesday, January 18, 2011 11:36:17 AM
> Subject: RE: Spanning-tree
>
> I second that... rootguard
>
> _______________________________________________________________________________
> Bradford Haas | Unified Communications Architect | CCIE 17887, CCVP, CCDP, MCSE | Northeast | Presidio Networked Solutions
> 10 Sixth Road, Woburn MA 01801 | bhaas_at_presidio.com
> D: 781.638.2258 | C: 781-223-1867 | www.presidio.com
> Fax: 781.970-1458
>
>
>
> -----Original Message-----
> From: nobody_at_groupstudy.com [mailto:nobody_at_groupstudy.com] On Behalf Of Ronnie Angello
> Sent: Tuesday, January 18, 2011 11:30 AM
> To: dls152_at_cox.net
> Cc: ccielab_at_groupstudy.com
> Subject: Re: Spanning-tree
>
> Root Guard???
>
> On Tue, Jan 18, 2011 at 11:07 AM, <dls152_at_cox.net> wrote:
>
> > Can someone tell me how to prevent switch from becoming root without
> > using priority command?
> >
> > Thanks!
> >
> >
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> --
> Ronald Angello
> Senior Network Architect
> CCIE 17846
> CCDP, CCIP, CCNP
>
>
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> Blogs and organic groups at http://www.ccie.net
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> _______________________________________________________________________
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>
>
> Blogs and organic groups at http://www.ccie.net
>
> _______________________________________________________________________
> Subscription information may be found at:
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>
>
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>
> _______________________________________________________________________
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Received on Wed Jan 19 2011 - 14:33:07 ART