Re: Spanning-tree

The requirement is to configure the switch not to be able to become root.

---- Shane K <shanekgs_at_gmail.com> wrote:
> Another vote for rootguard.
>
> The "spanning-tree vlan root primary" command be considered setting
> the priority depending on the requirements.
>
> S
> Sent from my iPhone
>
> On 19 Jan 2011, at 22:31, Aaron <aaron1_at_gvtc.com> wrote:
>
> > wonder if this is what we could do, determine which switch has
> > highest Mac address, then call that switch "switch 1" then I guess
> > you could leave all switches at default prio 32768 and Mac would
> > dictate who wins... And that highest numbered one (switch 1) would
> > never win
> >
> > Aaron
> >
> > On Jan 19, 2011, at 1:33 PM, <dls152_at_cox.net> wrote:
> >
> >> 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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Received on Wed Jan 19 2011 - 19:32:39 ART