From owner-freebsd-current@FreeBSD.ORG  Wed Jun 15 20:14:01 2005
Return-Path: <owner-freebsd-current@FreeBSD.ORG>
X-Original-To: current@freebsd.org
Delivered-To: freebsd-current@FreeBSD.ORG
Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP id 5785516A41C;
	Wed, 15 Jun 2005 20:14:01 +0000 (GMT)
	(envelope-from hans@lambermont.dyndns.org)
Received: from lambermont.dyndns.org (lambermont.dyndns.org [82.93.47.245])
	by mx1.FreeBSD.org (Postfix) with ESMTP id F375943D1F;
	Wed, 15 Jun 2005 20:14:00 +0000 (GMT)
	(envelope-from hans@lambermont.dyndns.org)
Received: by lambermont.dyndns.org (Postfix, from userid 1001)
	id 8DC5995B17; Wed, 15 Jun 2005 22:13:59 +0200 (CEST)
Date: Wed, 15 Jun 2005 22:13:59 +0200
To: Peter Jeremy <PeterJeremy@optushome.com.au>
Message-ID: <20050615201359.GC16227@leia.lambermont.dyndns.org>
References: <58397.148.122.180.9.1118829978.squirrel@mail.yazzy.org>
	<20050615190418.GD50157@cirb503493.alcatel.com.au>
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <20050615190418.GD50157@cirb503493.alcatel.com.au>
User-Agent: Mutt/1.4.2.1i
From: hans@lambermont.dyndns.org (Hans Lambermont)
Cc: freebsd-net@freebsd.org, "M.Jessa" <lists@yazzy.org>, current@freebsd.org
Subject: Re: Looking for networking solution.
X-BeenThere: freebsd-current@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: Discussions about the use of FreeBSD-current
	<freebsd-current.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-current>, 
	<mailto:freebsd-current-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-current>
List-Post: <mailto:freebsd-current@freebsd.org>
List-Help: <mailto:freebsd-current-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-current>,
	<mailto:freebsd-current-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Wed, 15 Jun 2005 20:14:01 -0000

Peter Jeremy wrote:

> On Wed, 2005-Jun-15 12:06:18 +0200, M.Jessa wrote:
>> I am looking for solution I could implement on a link with a huge
>> latency when ping replies can go up to a few hundred miliseconds, e.g
>> sateliete links.
> 
> What is the problem you are trying to solve?  Satellite links have a
> fairly constant round-trip delay and the RTT calculations built into
> TCP will happily compensate for this.  As long as the TCP window size
> is larger than the delay*bandwidth and the packet loss probability is
> well below 1 packet per window, TCP should work fine.

There's a lot to improve on in this situation, See f.i.
http://www.tellitec.be/tellinet/enhanced.html

-- Hans

Disclaimer: I have a business relation to Tellitec.
-- 
http://hans.dse.nl/   () ASCII-ribbon campaign against vCards,
                      /\ HTML-mail and proprietary formats.