From owner-freebsd-questions Fri Apr 9 6:51:51 1999 Delivered-To: freebsd-questions@freebsd.org Received: from chouette.inria.fr (chouette.inria.fr [138.96.24.103]) by hub.freebsd.org (Postfix) with ESMTP id E3A5715187 for ; Fri, 9 Apr 1999 06:51:44 -0700 (PDT) (envelope-from Emmanuel.Duros@sophia.inria.fr) Received: by chouette.inria.fr (8.8.8/8.8.5) id PAA09809; Fri, 9 Apr 1999 15:49:43 +0200 (MET DST) Date: Fri, 9 Apr 1999 15:49:43 +0200 (MET DST) Message-Id: <199904091349.PAA09809@chouette.inria.fr> From: Emmanuel Duros To: freebsd-questions@freebsd.org Subject: RFC 1323 - How to make it work ? X-URL: http://www.inria.fr/rodeo/personnel/eduros Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG Hi, I am trying to get speed improvement using RFC 1323 to download files via a satellite link without much success(!). I have 2 FreeBSD (2.2.7) boxes (bsd 1 and bsd 2) which are connected via a broadcast satellite link and an Ethernet LAN. satellite link 6Mbps --------->------------>------------>---------- | | ------- ------- |bsd 1| |bsd 2| ------- ------- | | ---------------------------------------------- Ethernet LAN 10Mbps Routing is configured in such way: - bsd 1 sends packets to bsd 2 via the sat link - bsd 2 send packets to bsd 1 vian the LAN The RTT is about 270ms. When downloading a file (client is bsd 1 and server is bsd 2), the maximum data rate I have been able to get on this topology is 50-60 Kbytes/s. And this, whatever the value of net.inet.tcp.rfc1323 (0,1) on both freebsd boxes. When I change the value net.inet.tcp.rfc1323, it seems that nothing really happens. I am pretty sure I could get a much better data rate than this... Am I doing anything wrong ? I also played with net.inet.tcp.rfc1644 without success. Any help will be very much appreciated ! Thanks Emmanuel Duros To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message