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Date:      Mon, 22 May 2006 08:51:00 -0400
From:      Chuck Swiger <cswiger@mac.com>
To:        mag@intron.ac
Cc:        freebsd-net@freebsd.org
Subject:   Re: How to Quicken TCP Re-transmission?
Message-ID:  <4471B3B4.30908@mac.com>
In-Reply-To: <20060522115722.15918F1590@smtp.263.net>
References:  <20060522115722.15918F1590@smtp.263.net>

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mag@intron.ac wrote:
> Hi,
>     I want to transmit data between host A and host B. The link between
> these two hosts is really bad: PING reports 30% packet loss and about
> 60 ms return delay. 

OK.

> This means if timed out for 1 second, the data must have been lost.

Well, no, that's not necessarily the case.  It's possible for traffic to 
get delayed (perhaps a router is sending some traffic the wrong way, 
causing a loop or non-ideal path) for longer.

Try turning on the SACK TCP option...

-- 
-Chuck




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