RE: IP Event Dampening

From: SAVJANI, HITESH, WWCS (hitesh@att.com)
Date: Fri Nov 17 2006 - 16:54:29 ART

Salman,

Default value for the penalty is 1000 which can not be changed. Yes, it
increases by 1000 every time it flaps. You are probably looking at the
default suppress value which is 2000 also. However you can configure the
suppress-threshold value which will decide when to suppress a route. You
can read more about it on the following link

http://www.cisco.com/univercd/cc/td/doc/product/software/ios123/123tcr/1
23tip2r/ip2_c1gt.htm#wp1093971

I am sure someone else on the group can add to this.

HTH,

Hitesh Savjani
CCIE # 17151

________________________________

From: Salman Abbas [mailto:dukelondon@gmail.com]
Sent: Friday, November 17, 2006 1:57 PM
To: SAVJANI, HITESH, WWCS; ccie >> Cisco certification;
Duane.Fletcher@morganstanley.com
Subject: Re: IP Event Dampening

Hi Fletcher,

I'm not the Sal Abbas who used to work at AT&T.

Hi Hitesh,

Thanks a bunch for your reply. The default value for "value to start
suppressing an interface" is 2000. I've checked that on the router.
When you say in 2 flaps, it'll become 2000, do you mean it increases by
1000 every time theres a flap? Is this a documented value somewhere or
can I see this on the router? If it starts from 0, why do I always see a
value of 2000 in my sh dampening interface output?What do you think the
answer should be in the light of this fact?

Regards,

Salman

On 11/18/06, SAVJANI, HITESH, WWCS <hitesh@att.com> wrote:

        Salman,

        I think if you want your interface to be suppressed after two
flaps then
        you should set the value to be 2000.
        Reason for that is it will start from 0 penalty & in 2 flaps
will bring
        it to 2000.

        HTH,

        Hitesh Savjani
        CCIE # 17151

        -----Original Message-----
        From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On
Behalf Of
        Salman Abbas
        Sent: Friday, November 17, 2006 11:36 AM
        To: ccie >> Cisco certification
        Subject: IP Event Dampening

        Hi guys,

        I want RIP to stop interface e0/0 on my router from
participating in
        routing
        if it flaps 2 times in a *15* second period. what dampening
values will
        I
        have to set to achieve this?

        interface e0/0
        dampening *15* 1000 __ 60. I think the answer would fit at the
third
        place
        (value to start supressing an interface) in the dampening
command.
        However,
        Im not sure. Please help.

        Thanks a bunch in advance!!!

        Cheers!

        Salman

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