From owner-freebsd-net@FreeBSD.ORG Thu Jun 16 00:35:35 2005 Return-Path: X-Original-To: freebsd-net@freebsd.org Delivered-To: freebsd-net@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 1182F16A41C; Thu, 16 Jun 2005 00:35:35 +0000 (GMT) (envelope-from on@cs.ait.ac.th) Received: from mail.cs.ait.ac.th (mail.cs.ait.ac.th [192.41.170.16]) by mx1.FreeBSD.org (Postfix) with ESMTP id F342A43D1F; Thu, 16 Jun 2005 00:35:33 +0000 (GMT) (envelope-from on@cs.ait.ac.th) Received: from banyan.cs.ait.ac.th (banyan.cs.ait.ac.th [192.41.170.5]) by mail.cs.ait.ac.th (8.12.11/8.12.11) with ESMTP id j5G0ZRmt052914 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Thu, 16 Jun 2005 07:35:27 +0700 (ICT) Received: (from on@localhost) by banyan.cs.ait.ac.th (8.13.1/8.12.11) id j5G0ZPZH022536; Thu, 16 Jun 2005 07:35:25 +0700 (ICT) Date: Thu, 16 Jun 2005 07:35:25 +0700 (ICT) Message-Id: <200506160035.j5G0ZPZH022536@banyan.cs.ait.ac.th> From: Olivier Nicole To: lists@yazzy.org In-reply-to: <58397.148.122.180.9.1118829978.squirrel@mail.yazzy.org> (lists@yazzy.org) References: <58397.148.122.180.9.1118829978.squirrel@mail.yazzy.org> X-Virus-Scanned: on CSIM by amavisd-milter (http://www.amavis.org/) Cc: freebsd-net@freebsd.org, current@freebsd.org Subject: Re: Looking for networking solution. X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 16 Jun 2005 00:35:35 -0000 > 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. > Etc. One way we have been thinking was to use some NAT on both end of the satellite connection and change the window size on the satellite link. That way you can push more data on the link before the first ack is due. I do not see how you can do only local ack, if a packet is lost on the "normal network" you have to have a way to inform the other end and do retransmission. If you can do only local retransmission, then you are talking about full satellite accelerator box :) Olivier