[173436] in North American Network Operators' Group

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Re: TCP Window Scaling issue

daemon@ATHENA.MIT.EDU (Tony Finch)
Thu Jul 24 12:25:57 2014

X-Original-To: nanog@nanog.org
Date: Thu, 24 Jul 2014 17:25:49 +0100
From: Tony Finch <dot@dotat.at>
To: Zach Hill <zach.reborn@gmail.com>
In-Reply-To: <CAPN7yZ+qDB0Qq4y2d0cPEXH-FhxeZfPsbLrM5vVAujoBMNoUZw@mail.gmail.com>
Cc: nanog@nanog.org
Errors-To: nanog-bounces@nanog.org

Zach Hill <zach.reborn@gmail.com> wrote:

> What's interesting is this is only affecting a single server and only
> when traffic is going over the WAN circuit. Testing from Server A to any
> server on it's network shows it is negotiating window scaling just fine.

Check your firewall isn't buggering about with TCP options.

Tony.
-- 
f.anthony.n.finch  <dot@dotat.at>  http://dotat.at/
South German Bight, East Humber: Northeasterly 4 or 5. Slight, occasionally
moderate. Mainly fair. Moderate or good.

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