From: Tien (tientien.wang@gmail.com)
Date: Tue Jun 17 2008 - 14:07:29 ART
Hi Scott,
Is it true that route dampening is consider obsolete?
It actually not recommended to be used anymore?
Tien
On Tue, Jun 17, 2008 at 2:42 AM, Scott Morris <swm@emanon.com> wrote:
> 15 minutes = 900 seconds.
>
> The decay time is a varying timer (calculated by the router) which has to
> do
> with how many times the route has already flapped and what the starting
> sliding scale is. 1st decay appears to be right away, subsequent decays
> are
> based on sliding timer.
>
> Check out RFC 2439.
>
> HTH,
>
> Scott
>
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
> ccie
> az
> Sent: Tuesday, June 17, 2008 7:09 AM
> To: Cisco certification
> Subject: BGP Route Dampening
>
> Can anyone confirm if I am right here:
>
> Rack1R4#show ip bgp dampening parameters dampening 15 1000 3000 30
> (route-map TASK_4.4 10)
> Half-life time : 15 mins Decay Time : 370 secs
> Max suppress penalty: 4000 Max suppress time: 30 mins
> Suppress penalty : 3000 Reuse penalty : 1000
>
> I understand that the half-life is 15 minutes and that the penalty will
> reduce by half every 15 minutes. But what is the decay timer seen in the
> above output. It is exactly half of the half-life timer. My thoughts are
> this is the time after which the penalty will start to decay.
>
> So after 6.5 minutes the penalty will start to decay until it reaches
> 15 minutes when it will have reduced to half.
>
>
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