[98739] in North American Network Operators' Group
Re: Extreme congestion (was Re: inter-domain link recovery)
daemon@ATHENA.MIT.EDU (Sean Donelan)
Thu Aug 16 14:11:18 2007
Date: Thu, 16 Aug 2007 12:43:46 -0400 (EDT)
From: Sean Donelan <sean@donelan.com>
To: Randy Bush <randy@psg.com>
cc: nanog <nanog@merit.edu>
In-Reply-To: <46C3FCC7.3000108@psg.com>
Errors-To: owner-nanog@merit.edu
On Wed, 15 Aug 2007, Randy Bush wrote:
>> So that's why I keep returning to the need to pushback traffic a couple
>> of ASNs back. If its going to get dropped anyway, drop it sooner.
>
> ECN
Oh goody, the whole RED, BLUE, WRED, AQM, etc menagerie.
Connections already in progress (i.e. the ones with ECN) we want to keep
working and finish. We don't want those connections to abort in the
middle, and then add to the congestion when they retry.
The phrase everyone is trying to avoid saying is "Admission Control." The
Internet doesn't do admission control well (or even badly).
