From owner-freebsd-current Fri Mar 20 11:23:45 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id LAA04095 for freebsd-current-outgoing; Fri, 20 Mar 1998 11:23:45 -0800 (PST) (envelope-from owner-freebsd-current@FreeBSD.ORG) Received: from implode.root.com (implode.root.com [198.145.90.17]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id LAA04090 for ; Fri, 20 Mar 1998 11:23:43 -0800 (PST) (envelope-from root@implode.root.com) Received: from implode.root.com (localhost [127.0.0.1]) by implode.root.com (8.8.5/8.8.5) with ESMTP id LAA20772; Fri, 20 Mar 1998 11:18:15 -0800 (PST) Message-Id: <199803201918.LAA20772@implode.root.com> To: Warner Losh cc: Kevin Day , ckempf@enigami.com (Cory Kempf), freebsd-current@FreeBSD.ORG Subject: Re: Pathetic FTP performance In-reply-to: Your message of "Fri, 20 Mar 1998 10:21:50 MST." <199803201721.KAA00713@harmony.village.org> From: David Greenman Reply-To: dg@root.com Date: Fri, 20 Mar 1998 11:18:15 -0800 Sender: owner-freebsd-current@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG >In message <199803201631.KAA00555@home.dragondata.com> Kevin Day writes: >: With a 2.1 kernel I saw a nice steady stream... I've been unable to find >: what change prompted this. :) > >I'm seeing something that is similar that I've not had time to track >down. When I connect via lynx or netscape to certain sites >(www.onsale.com is one), I get 300-odd bytes and then nothing else for >the life of the conenction. I'm seeing this on a early Feb 2.2 as >well as a Julyish -current system. Yes, tcp extentions are turned off >on both of these systems. > >The S4000 running OS/MP on the same subnet can get to these sites with >lynx no problems. This is probably caused by an interaction between Path MTU Discovery and misconfigured firewalls at www.onsale.com and other places which are dropping ICMP packets. You can disable PMTU Discovery with the following addition to your 'defaultrouter' line in /etc/sysconfig: -lock -mtu 1500 -DG David Greenman Core-team/Principal Architect, The FreeBSD Project To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message