----- Forwarded message from Mikael Abrahamsson <[email protected]> -----

From: Mikael Abrahamsson <[email protected]>
Date: Tue, 28 Jun 2011 12:36:02 +0200 (CEST)
To: Eugen Leitl <[email protected]>
cc: NANOG list <[email protected]>
Subject: Re: [pfSense Support] Strange TCP connection behavior 2.0 RC2 (+3)
User-Agent: Alpine 2.00 (DEB 1167 2008-08-23)
Organization: People's Front Against WWW

On Tue, 28 Jun 2011, Eugen Leitl wrote:

> Even disabling window scaling and setting the window to 16MB makes no  
> difference.

If you disable window scaling, you're limiting it to 64k.

> However, we have tried different hardware (L3 switches, media convertes +
> laptops etc), and the symptoms still persist...

You should dump the traffic and analyse it in Wireshark, then you'll see  
if you have packet loss or not. Most likely you do not, and the reason for  
your problem is TCP setting related (see other posts with links).

Before you start replacing hw you should diagnose what your problem is, if  
you're not losing packets and the delay variation is constant, then it's  
not related to the network. Both of these factors can be seen using the  
built in tools in wireshark (Analyze->Expert info, and Statistics->TCP  
stream graph).

-- 
Mikael Abrahamsson    email: [email protected]

----- End forwarded message -----
-- 
Eugen* Leitl <a href="http://leitl.org";>leitl</a> http://leitl.org
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