Re: Spanning tree question

From: Bryan Bartik (bbartik@ipexpert.com)
Date: Sun Mar 29 2009 - 13:46:28 ART


Thanks Divin,

It does depend on what the current root priority is, which is what your link
explains. If there is already a root in the network with a priority of lower
than the default, the macro sets it lower than the default of 24576.

If no switch priorities have been changed, the defaults are explained here:

http://www.cisco.com/en/US/docs/switches/lan/catalyst3560/software/release/12.2_50_se/command/reference/cli3.html#wp1947142

-hth

Bryan Bartik
CCIE #23707, CCNP
Sr. Support Engineer - IPexpert, Inc.
URL: http://www.IPexpert.com

On Sun, Mar 29, 2009 at 10:34 AM, Divin Mathew John <divinjohn@gmail.com>wrote:

> I think the default values depend on the switch...there's a conflicting doc
> @ *http://tinyurl.com/dec6ls* its says there ...
>
> if the lowest priority of any switch is above 8192 then the switch where
> the macro is given as root it will make its priority 8192... and if the
> other switches have their priority set to something less than 8192 then..
> the root macro sets the priority to one less than the priroirty of teh
> lowest birdge priodrity making the bridge the root.!
> Thanking You
>
> Yours Sincerely
>
> Divin Mathew John
> divinjohn@gmail.com
> divin@dide3d.com
> +91 9945430983
> +91 9846697191
> +974 5008916
> PGP PUBLIC KEY BLOCK @ http://www.dide3d.com/divin_Public_PGP_key.txt
> Sent from: Bangalore KA India.
>
> On Sun, Mar 29, 2009 at 9:57 PM, Bryan Bartik <bbartik@ipexpert.com>wrote:
>
>> go with rapid-pvst, but I guess mst would also do the job since it uses
>> rstp.
>
>
>

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