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Date:      Fri, 13 Apr 2001 07:49:18 -0700
From:      Julian Elischer <julian@elischer.org>
To:        Toni SOUEID <djt2000@inco.com.lb>
Cc:        freebsd-bugs@freebsd.org, freebsd-net@freebsd.org
Subject:   Re: Problem in TCP initialisation of cwnd
Message-ID:  <3AD711EE.EEADD293@elischer.org>
References:  <000901c0c422$bd356860$941f7ec2@hamster>

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Toni SOUEID wrote:
> 
> Hello,
> My name is Toni Soueid and I'm currently working on a project
> in which I have to analyse the behavior of FreeBSD TCP.
> 
> I'm running FreeBSD 4.2-STABLE (which I got from a Magazine CD),
> and I'm analysing the TCP with various tools.
> 
> One thing that shocked me is that a TCP connection in FreeBSD (at least on
> my machines)
> doesn't begin with a slow start but rather sends a huge amount of packets to
> the other end
> (this huge amount only seems to be limited either by the receiver window or
> by the local machine's
> send buffer). It seems that cwnd isn't initialised.

It is my understanding that it does this only if the destination is considered
'local'
(i.e in the same subnet.)


-- 
      __--_|\  Julian Elischer
     /       \ julian@elischer.org
    (   OZ    ) World tour 2000-2001
---> X_.---._/  
            v

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