From owner-freebsd-stable@FreeBSD.ORG Tue May 31 20:01:08 2005 Return-Path: X-Original-To: freebsd-stable@freebsd.org Delivered-To: freebsd-stable@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 23C3716A41C; Tue, 31 May 2005 20:01:08 +0000 (GMT) (envelope-from owner-freebsd-questions@freebsd.org) Received: from pythagoras.zen.co.uk (pythagoras.zen.co.uk [212.23.3.140]) by mx1.FreeBSD.org (Postfix) with ESMTP id E8FB943D48; Tue, 31 May 2005 20:01:06 +0000 (GMT) (envelope-from owner-freebsd-questions@freebsd.org) Received: from [82.69.255.54] (helo=rtxnetworks.co.uk) by pythagoras.zen.co.uk with esmtp (Exim 4.30) id 1DdCvC-0006hE-2G; Tue, 31 May 2005 20:01:06 +0000 Received: from mail pickup service by rtxnetworks.co.uk with Microsoft SMTPSVC; Tue, 31 May 2005 21:00:47 +0100 thread-index: AcVmG29hBze8ARgzRoyADcknv5b/Yw== X-Original-To: freebsd-questions@freebsd.org Delivered-To: freebsd-questions@freebsd.org Date: Tue, 31 May 2005 21:00:46 +0100 From: "Skylar Thompson" Organization: Earlham College Computer Science Department User-Agent: Mozilla Thunderbird 1.0 (X11/20041206) X-Accept-Language: en-us, en MIME-Version: 1.0 To: References: <200505270711.j4R7BTMf078204@gw.catspoiler.org><429C867A.5040909@cs.earlham.edu> Message-ID: <000001c5661b$6f61aeb0$144da8c0@rtxnetworks.local> In-Reply-To: Content-Transfer-Encoding: 7bit X-Enigmail-Version: 0.89.5.0 X-Enigmail-Supports: pgp-inline, pgp-mime Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="------------enig63A298A94E8D527FE8FF3D65" X-Greylist: Sender succeded SMTP AUTH authentication, not delayed bymilter-greylist-1.6 (cs.earlham.edu [159.28.230.3]); Tue, 31 May 2005 14:57:58 -0500 (EST) X-Virus-Scanned: ClamAV 0.85.1/900/Tue May 31 05:50:19 2005 onquark.cs.earlham.edu X-Virus-Status: Clean X-Sanitizer: This message has passed the MIMEDefang sanitizer. X-Mailer: Microsoft CDO for Exchange 2000 X-Sanitizer-URL: http://www.cs.earlham.edu/applied-groups/admin/ X-Sanitizer-Version: MIMEDefang/ECSanitizer $Revision: 1.18 $ X-Sanitizer-Config-Version: $Revision: 1.180 $ X-Scanned-By: MIMEDefang 2.51 on 159.28.230.3 X-Spam-Status: No, score=-2.8 required=8.0 tests=ALL_TRUSTED autolearn=failed version=3.0.3 X-Spam-Checker-Version: SpamAssassin 3.0.3 (2005-04-27) on quark.cs.earlham.edu X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Sender: Errors-To: owner-freebsd-questions@freebsd.org X-Zen-Test-Spam-Score: 0 X-Zen-Test-Spam-Bar: (/) X-Originating-Oppenheimer-IP: [216.136.204.119] X-Envelope-From: owner-freebsd-questions@freebsd.org X-Envelope-To: james@rtxnetworks.co.uk X-Apparently-To: james@rtxnetworks.co.uk X-Zen-Loop: 4e5e9d7b303bfa0036200918db506edf Content-Class: urn:content-classes:message X-Zen-Stored: julia.zen.co.uk/1DdCsd-0001qh-BO/2005-05-31 19:58:27 Importance: normal X-Antivirus: AVG for E-mail 7.0.323 [267.3.0] Priority: normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.3790.181 X-OriginalArrivalTime: 31 May 2005 20:00:47.0078 (UTC) FILETIME=[6F80A860:01C5661B] X-Originating-Pythagoras-IP: [82.69.255.54] Cc: Don Lewis , freebsd-stable@freebsd.org, freebsd-questions@freebsd.org Subject: Re: Weird NFS problems X-BeenThere: freebsd-stable@freebsd.org List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 31 May 2005 20:01:08 -0000 This is a multi-part message in MIME format. --------------enig63A298A94E8D527FE8FF3D65 Content-Type: text/plain; format=flowed; charset="ISO-8859-1" Content-Transfer-Encoding: 7bit Jon Dama wrote: >Yes, but surely you weren't bridging gigabit and 100Mbit before? > > >Did you try my suggestion about binding the IP address of the NFS server >to the 100Mbit side? > > Yeah. Unfortunately networking on the server fell apart when I did that. Traffic was still passed and I could get through to the server on the 100Mb/s side, but not on the 1000Mb/s. It looked like the arp tables weren't being forwarded properly, but I couldn't convince FreeBSD to do proxy arp. After doing some more poking around, it actually looks like it might be a misfeature in the Linux 2.4 kernel wrt ipfilter (which is running on the bridge). Apparently 2.4 fragments UDP packets in the reverse order that every other UNIX-like operating system does, which throws off ipfilter's state tables. I'm going to do some testing to see if the difference between UDP and TCP NFS is negligible enough for us to disregard. Thanks for the suggestions! -- -- Skylar Thompson (skylar@cs.earlham.edu) -- http://www.cs.earlham.edu/~skylar/ --------------enig63A298A94E8D527FE8FF3D65 Content-Type: application/pgp-signature; name="signature.asc" Content-Transfer-Encoding: 7bit Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.4 (GNU/Linux) Comment: Using GnuPG with Thunderbird - http://enigmail.mozdev.org iD8DBQFCnMHAsc4yyULgN4YRApxkAJ9Brs4MyTHWATca8AWm/sAZY5R+nACgoQYW QgIiFW+IK3DvHKQDx07B1jM= =0utg -----END PGP SIGNATURE----- --------------enig63A298A94E8D527FE8FF3D65--