From: sheherezada@gmail.com
Date: Tue Oct 09 2007 - 05:48:37 ART
See "RIPE-210: Coordinated Route Flap Damping Parameters". As far as
I am concerned, I actually saw this implemented on a full table
router.
http://www.ripn.net:8080/nic/ripe-docs/ripe-210.txt
Mihai
On 10/9/07, Joseph Brunner <joe@affirmedsystems.com> wrote:
> Holy hipster batman!
>
> If I ran that thing on a router with full tables (228k routes where I'm
> sitting)
>
> I think it would CHOKE
>
> A measly "set local pref" runs a 7200vxr's npe-g1's cpu to the hill for like
> 30 seconds...
>
> WOW
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
> sheherezada@gmail.com
> Sent: Tuesday, October 09, 2007 3:12 AM
> To: Con Spathas
> Cc: Joseph Saad; Cisco certification
> Subject: Re: change default penalty value for BGP dampening
>
> Yes it's possible. See example below.
>
> router bgp 65535
> bgp dampening route-map gradedFlapDamping
> !
> route-map gradedFlapDamping deny 5
> match ip address prefix-list <your aggregates>
> !
> route-map gradedFlapDamping deny 10
> match ip address prefix-list <dns root servers & stuff>
> !
> route-map gradedFlapDamping permit 20
> match ip address prefix-list <below /24>
> set dampening 15 820 3000 30
> !
> route-map gradedFlapDamping permit 30
> match ip address prefix-list <larger networks>
> set dampening 15 750 3000 45
> !
> route-map gradedFlapDamping permit 40
> set dampening 10 1500 3000 30
>
> HTH,
>
> Mihai Dumitru
> CCIE #16616 (SP, R&S)
>
>
> On 10/9/07, Con Spathas <con@spathas.net> wrote:
> > Actually sorry - a little premature ejaculation there on my part.
> >
> > I haven't actually seen where you can adjust the "penalty" itself.
> > Be interested as well now to know if it's possible to change it or not!!
> >
> > -----Original Message-----
> > From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
> > Joseph Saad
> > Sent: Monday, 8 October 2007 20:24
> > To: Cisco certification
> > Subject: change default penalty value for BGP dampening
> >
> > As stated in most text books, default penalty value is 1000 per flap for
> bgp
> > routes.
> >
> > Is there a way to change this default value?
> >
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