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From: Ivan Voras <ivoras@freebsd.org>
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Subject: Re: low network speed
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On 25/01/2012 06:27, Eugene M. Zheganin wrote:
> Hi.
>
> I'm suffering from low network performance on one of my FreeBSDs.
> I have an i386 8.2-RELEASE machine with an fxp(4) adapter. It's
> connected though a bunch of catalysts 2950 to another 8.2.

Another thing to try would be to upgrade both ends to 8-STABLE and try 
the high-performance network buffer sizing in ssh (enabled by default).