[114007] in North American Network Operators' Group
Re: route flap dampening
daemon@ATHENA.MIT.EDU (Jack Bates)
Mon Apr 27 14:36:01 2009
Date: Mon, 27 Apr 2009 13:35:50 -0500
From: Jack Bates <jbates@brightok.net>
To: NANOG list <nanog@nanog.org>
In-Reply-To: <A452952D-9A19-4C46-AD97-A1A227418FD7@ianai.net>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
Patrick W. Gilmore wrote:
> On Apr 27, 2009, at 2:20 PM, Jack Bates wrote:
>> We've been considering it after the last flap around the world;
>> perhaps with extremely short penalty times.
>
> <http://www.ripe.net/ripe/meetings/ripe-43/presentations/ripe43-routing-flap.pdf>
>
>
Yeah, read the presentation several times, thus the short penalty times,
and probably high thresholds.
The idea for me is to limit the harm of excessive flapping while not
being paranoid. I've had a customer lose a lot of connectivity for 30
minutes after 3 or 4 flaps. I figure 5 minute ignore after about 10
flaps in a 10 minute period.
Jack
