[112761] in North American Network Operators' Group

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Re: Shady areas of TCP window autotuning?

daemon@ATHENA.MIT.EDU (Joe Maimon)
Tue Mar 17 12:41:29 2009

Date: Tue, 17 Mar 2009 11:47:16 -0500
From: Joe Maimon <jmaimon@ttec.com>
To: nanog@nanog.org
In-Reply-To: <20090316140935.GA21789@ussenterprise.ufp.org>
Errors-To: nanog-bounces@nanog.org



Leo Bicknell wrote:

> As network operators we have to get out of the mind set that "packet
> drops are bad".  

They are bad.

> TCP needs drops to manage to the right speed.

This is whats bad. TCP should be slightly more intelligent and start 
considering rtt jitter as its primary source of congestion information.

Designing L2 network performance to optimize a l3 protocol is backwards.





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