From owner-freebsd-net Thu Jun 15 17:30:16 2000 Delivered-To: freebsd-net@freebsd.org Received: from mout1.freenet.de (mout1.freenet.de [194.97.50.132]) by hub.freebsd.org (Postfix) with ESMTP id A2CEE37B8FA for ; Thu, 15 Jun 2000 17:30:08 -0700 (PDT) (envelope-from ino-waiting@gmx.net) Received: from [194.97.50.136] (helo=mx3.freenet.de) by mout1.freenet.de with esmtp (Exim 3.14 #3) id 132k1O-0000rn-00 for freebsd-net@freebsd.org; Fri, 16 Jun 2000 02:30:06 +0200 Received: from [213.6.12.26] (helo=spotteswoode.de) by mx3.freenet.de with smtp (Exim 3.14 #3) id 132k1N-0000xP-00 for freebsd-net@freebsd.org; Fri, 16 Jun 2000 02:30:05 +0200 Received: (qmail 818 invoked by uid 0); 16 Jun 2000 00:30:28 -0000 From: "clemensF" Date: Fri, 16 Jun 2000 02:30:28 +0200 To: Patrick Bihan-Faou Cc: David Gilbert , freebsd-net@freebsd.org Subject: Re: "frag-anyways" knob. Message-ID: <20000616023028.B745@spotteswoode.de> References: <14664.60992.300592.147710@trooper.velocet.net> <010701bfd718$5917c460$040aa8c0@local.mindstep.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <010701bfd718$5917c460$040aa8c0@local.mindstep.com>; from patrick@mindstep.com on Thu, Jun 15, 2000 at 06:23:36PM -0400 Organization: private X-PGP-ID: 0xD4685B88-4894C483/DH X-PGP-FPR: 0FAE 5F53 CEB9 49DE 9300 3035 D468 5B88 4894 C483 Sender: owner-freebsd-net@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org > Patrick Bihan-Faou: > The easy fix is to set the MTU for windows to be something smaller than the > MTU of the PPPoE link (somewhere around 1400). This has the effect of > setting the MSS option in outbound TCP packets to something that the PPPoE > link can handle. The server then honors that value and no fragmentation > occurs. this problem looks entirely different from a leaf node. but nevertheless i wonder if tcp-flags set by a leaf influences the situation upstream. my throughput is optimal at about 300, but for me it's better to set mru. clemens To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-net" in the body of the message