RE: STP ROOT BRIDGE PROBLEM!!!!

I agree with Bob. Span guard root is the way to go at the interface
level and is the simplest solution of them all, without touching the
switch that we are trying to prevent from becoming the Root switch.

Keep in mind though that if that switch had a lower priority, like zero
for instance, while the others had say 4096 and 8192, span guard root
would block it, from taking over, but it will not prevent it from
becoming Root. Once all switches block that port and they are in the
Root Inc Blocked State, that switch would technically be the root switch
in an isolated STP topology of its own.

-----Original Message-----
From: nobody_at_groupstudy.com [mailto:nobody_at_groupstudy.com] On Behalf Of
Narbik Kocharians
Sent: Wednesday, June 16, 2010 10:18 AM
To: Bob Sinclair
Cc: HEMANTH RAJ; Cisco certification
Subject: Re: STP ROOT BRIDGE PROBLEM!!!!

Good one Bob.

On Wed, Jun 16, 2010 at 10:12 AM, Bob Sinclair <bob_at_bobsinclair.net>
wrote:

> Hello Hemanth,
>
> One option would be to configure root guard on switch ports that
connect to
> the target switch. If the target switch attempts to become root then
the
> connected switch port will go into root inconsistent state (blocked)
and
> will isolate the switch from the rest of the network. The target
switch
> will become root for all VLANs, but only within its own 1-switch
network.
> Whether this solution is acceptable depends on the exact wording of
the
> requirement.
>
> HTH,
>
> Bob Sinclair
>
> > -----Original Message-----
> > From: nobody_at_groupstudy.com [mailto:nobody_at_groupstudy.com] On Behalf
Of
> > HEMANTH RAJ
> > Sent: Wednesday, June 16, 2010 1:03 PM
> > To: Cisco certification; Narbik Kocharians; narbikk_at_hotmail.com
> > Subject: STP ROOT BRIDGE PROBLEM!!!!
> >
> > In STP I dont want to make a bridge as a root bridge for any vlans.
But
> > i
> > should not touch thats bridge priority.
> > How will i make a bridge not to become a root bridge without
touching
> > their
> > bridge priority???
> >
> > --
> > Problems arise Bcoz we talk,prblms r not solve bcoz we dont talk So
gud
> > r
> > bad talk to ur affectionate one's freely
> >
> > Urs Friendly,
> > HP HEMANTH RAJ
> >
> >
> > Blogs and organic groups at http://www.ccie.net
> >
> >
Received on Fri Jun 18 2010 - 11:44:33 ART