From owner-freebsd-hackers Wed May 7 17:38:39 1997 Return-Path: Received: (from root@localhost) by hub.freebsd.org (8.8.5/8.8.5) id RAA28392 for hackers-outgoing; Wed, 7 May 1997 17:38:39 -0700 (PDT) Received: from panda.hilink.com.au (panda.hilink.com.au [203.2.144.5]) by hub.freebsd.org (8.8.5/8.8.5) with ESMTP id RAA28387 for ; Wed, 7 May 1997 17:38:33 -0700 (PDT) Received: (from danny@localhost) by panda.hilink.com.au (8.8.5/8.7.3) id KAA03454; Thu, 8 May 1997 10:42:44 +1000 (EST) Date: Thu, 8 May 1997 10:42:42 +1000 (EST) From: "Daniel O'Callaghan" To: Shawn Carey cc: freebsd-hackers@FreeBSD.ORG Subject: Re: FTP Performance In-Reply-To: <3370BCEB.1CFBAE39@servtech.com> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-hackers@FreeBSD.ORG X-Loop: FreeBSD.org Precedence: bulk On Wed, 7 May 1997, Shawn Carey wrote: > In short, trying to get files out of my system, either by putting as a > client or by being get'ed as a server doesn't work well at all. > > To make matters even stranger (or maybe not), all of these problems > disappear if I only FTP to/from systems inside my ISP's routers. I have > contacted them about this, and they claim that the problem lies with the > systems I am trying to transfer files to/from. I could believe this if > the throughput were roughly the same no matter which direction the bits > were travelling. Ahah! Are they using Annex routers? If they are using an old version of the software, they are probably not working with TCP extensions properly. Try # sysctl -w net.inet.tcp.rfc1644=0 # sysctl -w net.inet.tcp.rfc1323=0 If that works, turn off tcp extensions in /etc/sysconfig | /etc/rc.conf Alternatively, try reducing the MTU and MRU of ppp's tun interface to 552 or 1064. That cured Robert Chalmers' problem with his ISP's Ascend routers. Danny