Great command, thanks for this!

-----Original Message-----
From: [email protected] 
[mailto:[email protected]] On Behalf Of GAURAV MADAN
Sent: Wednesday, April 14, 2010 7:29 AM
To: Syed Zaidi
Cc: R&S OSL
Subject: Re: [OSL | CCIE_RS] Setting layer 2 network diameter..

Well .. to make things easier there is a cli which will tell you that
diameter of X will give what values for hello , dead and max age .
This is available in all cat based switches . Please see below :


SW8#test spanning-tree diameter 2
diameter 2 and hello time 2 gives max age = 10 and forward delay 7
SW8#
SW8#test spanning-tree diameter 3
diameter 3 and hello time 2 gives max age = 12 and forward delay 9
SW8#


So you can play around and set the diameter accordingly .

Regards
Gaurav Madan
CCIE

On Wed, Apr 14, 2010 at 6:28 PM, Syed Zaidi <[email protected]> wrote:
> This is an extract from Cisco configuration guide for Catalyst 3560.. how
> can setting L2 diameter help us in CCIE lab? Are the candidate tested on
> this in relation to reducing convergence timers?
> Use the diameter keyword to specify the Layer 2 network diameter (that is,
> the maximum number of switch hops between any two end stations in the
> Layer 2 network). When you specify the network diameter, the switch
> automatically sets an optimal hello time, forward-delay time, and
> maximum-age time for a network of that diameter, which can significantly
> reduce the convergence time. You can use the hello keyword to override the
> automatically calculated hello time.
> Regards,
> Syed
> _______________________________________________
> For more information regarding industry leading CCIE Lab training, please
> visit www.ipexpert.com
>
>
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