Re: Spanning-tree

i dont think rootguard is the solution here.

All root guard does is prevent a switch from receiving superior BPDUs.
this will in effect SPLIT the spanning tree domain in your case.

only solution is to raise the bridge priority. this can be done
directly by changing priority OR indirectly by using Uplinkfast feature.

HTH,
-Vijay Shekhar
CCIE#17589/CISSP#65114/RHCE
http://au.linkedin.com/in/vshekhar

Quoting aaron1_at_gvtc.com:

> 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
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>
>
> -----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 - 07:04:21 ART