From owner-freebsd-net Mon May 31 6:38:48 1999 Delivered-To: freebsd-net@freebsd.org Received: from trooper.velocet.ca (trooper.velocet.net [209.167.225.226]) by hub.freebsd.org (Postfix) with ESMTP id D734714BF1 for ; Mon, 31 May 1999 06:38:44 -0700 (PDT) (envelope-from dgilbert@trooper.velocet.ca) Received: (from dgilbert@localhost) by trooper.velocet.ca (8.8.7/8.8.7) id JAA18669; Mon, 31 May 1999 09:38:24 -0400 (EDT) From: David Gilbert MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Message-ID: <14162.37071.546060.298675@trooper.velocet.ca> Date: Mon, 31 May 1999 09:38:23 -0400 (EDT) To: Luigi Rizzo Cc: dgilbert@velocet.ca (David Gilbert), wollman@khavrinen.lcs.mit.edu, freebsd-net@FreeBSD.ORG Subject: Re: Linux and Solaris tcp beating FreeBSD 4:1 In-Reply-To: <199905310300.FAA18044@labinfo.iet.unipi.it> References: <14161.65132.912907.525115@trooper.velocet.ca> <199905310300.FAA18044@labinfo.iet.unipi.it> X-Mailer: VM 6.71 under 20.4 "Emerald" XEmacs Lucid Sender: owner-freebsd-net@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org >>>>> "Luigi" == Luigi Rizzo writes: Luigi> If you have access to both sides of the adsl link, i think you Luigi> might more effectively implement link-level retransmits (i am Luigi> not sure, but it might be that ppp already does this). >> Luigi> It could be a relatively simple project to implement within a Luigi> FreeBSD-based router or bridge >> Unfortunately, I don't have access to the link layer. The routers >> are ascend --- but I do have control of both ends. Luigi> so you can still do the job -- just put two FBSD bridges next Luigi> to the ethernet port of the ascend's and let them implement the Luigi> local retransmit. I'm not positive how to do this. PPP does do retransmits, but it will only (AFAIK) use TCP as it's own transport --- which would suck. You'd need some udp transport for tunnels --- which would be writing your own retransmit code --- which would be rather like fixing the problem. Dave. -- ============================================================================ |David Gilbert, Velocet Communications. | Two things can only be | |Mail: dgilbert@velocet.net | equal if and only if they | |http://www.velocet.net/~dgilbert | are precisely opposite. | =========================================================GLO================ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-net" in the body of the message