[142510] in North American Network Operators' Group
Re: [pfSense Support] Strange TCP connection behavior 2.0 RC2 (+3)
daemon@ATHENA.MIT.EDU (Mikael Abrahamsson)
Wed Jun 29 07:57:33 2011
Date: Wed, 29 Jun 2011 13:56:34 +0200 (CEST)
From: Mikael Abrahamsson <swmike@swm.pp.se>
To: Tony Finch <dot@dotat.at>
In-Reply-To: <alpine.LSU.2.00.1106291214500.5578@hermes-2.csi.cam.ac.uk>
Cc: "williamejsalt@googlemail.com" <williamejsalt@googlemail.com>,
NANOG list <nanog@nanog.org>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
On Wed, 29 Jun 2011, Tony Finch wrote:
> Excessively large buffers are a problem because they break TCP's RTT
> measurement. Also TCP cannot measure the available bandwidth without
> packet loss.
Well, actually it can. ECN.
And regarding RTT measurement, since mobile network vary delay a lot,
that's not going to work well anyway.
--
Mikael Abrahamsson email: swmike@swm.pp.se
