Date: Fri, 20 Mar 1998 11:18:15 -0800 From: David Greenman <dg@root.com> To: Warner Losh <imp@village.org> Cc: Kevin Day <toasty@home.dragondata.com>, ckempf@enigami.com (Cory Kempf), freebsd-current@FreeBSD.ORG Subject: Re: Pathetic FTP performance Message-ID: <199803201918.LAA20772@implode.root.com> In-Reply-To: Your message of "Fri, 20 Mar 1998 10:21:50 MST." <199803201721.KAA00713@harmony.village.org>
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>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
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