Re: Root bridge

From: masroor ali <masror.ali_at_gmail.com>
Date: Thu, 23 Sep 2010 11:10:42 +0500

see i have a question in a document asking to make a root bridge without
changing priority, there must be a solution of this question..

On Thu, Sep 23, 2010 at 12:59 AM, Chris Grammer <cgrammer_at_essilorusa.com>wrote:

> Change the MAC to 0000.0000.0001 on the switch you want to be root?
> Change the switch priority on all the other switches to be higher than the
> switch that you want to be root.
>
> The bridge with the lowest Bridge ID wins.
>
> *Select a root bridge.* The *root bridge* of the spanning tree is the
> bridge
> with the smallest (lowest) bridge ID. Each bridge has a unique identifier
> (ID) and a configurable priority number; the bridge ID contains both
> numbers. To compare two bridge IDs, the priority is compared first. If two
> bridges have equal priority, then the MAC addresses are compared. For
> example, if switches A (MAC=0200.0000.1111) and B (MAC=0200.0000.2222) both
> have a priority of 10, then switch A will be selected as the root bridge.
>
> http://en.wikipedia.org/wiki/Spanning_tree_protocol
>
>
> <http://en.wikipedia.org/wiki/Spanning_tree_protocol>Chris
>
>
> On Wed, Sep 22, 2010 at 11:45 AM, masroor ali <masror.ali_at_gmail.com>
> wrote:
>
> > hi,
> >
> > is their any way to make a root switch without changing switch
> priority???
> >
> > --
> > Regards,
> > Masroor Ali
> > P Please don't print this e-mail unless you really need to.
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-- 
Regards,
Masroor Ali
P Please don't print this e-mail unless you really need to.
Blogs and organic groups at http://www.ccie.net
Received on Thu Sep 23 2010 - 11:10:42 ART

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