[8862] in North American Network Operators' Group
Re: seeing the trees in the forest of confusion
daemon@ATHENA.MIT.EDU (Larry Rosenman)
Sat Apr 26 15:14:36 1997
In-Reply-To: <199704261844.OAA14665@access.netaxs.com> from Avi Freedman at "Apr 26, 97 02:44:57 pm"
To: freedman@netaxs.com (Avi Freedman)
Date: Sat, 26 Apr 1997 14:05:47 -0500 (CDT)
From: Larry Rosenman <ler@lerami.lerctr.org>
Cc: junkins@nwnet.net, amb@xara.net, nanog@merit.edu
Avi Freedman wrote:
> > I agree that there appears to be some underlying problem with the BGP code
> > on the backbone that is delaying route withdrawals beyond a reasonable
> > time. We ran into a similar problem Wednesday night where one of our
> > customers started advertising more specifics for our network blocks to
> > another transit provider (who does not filter customer routes). After
> > shutting down the customer's BGP peering, the bogus routes were still in
> > the table an hour later at which time we started advertising our own more
> > specifics to restore service to our other customers -- this lead to our
> > unfortunate position in Thursday's CIDR report.
>
> Were they in as dampened; history; or just in as if they were in and had
> not flapped?
Dampened is what I saw looking at the digex looking glasses. And some
of them had times >1 hour.
>
> Dampening of more specific bogus announcements is a problem I'd like to
> see addressed, since the more general (and correct) routes won't be used
> if more specifics are dampened.
I agree that this is a problem.
Larry Rosenman
CyberRamp.net (AS6243)
From Home.
>
> > - Doug
>
> Avi
>
--
Larry Rosenman http://www.lerctr.org/~ler
Phone: +1 972-399-0210 (voice) Internet: ler@lerami.lerctr.org
US Mail: 900 Lake Isle Circle, Irving, TX 75060-7726
