From owner-freebsd-net@FreeBSD.ORG Sat Jun 10 19:09:34 2006 Return-Path: X-Original-To: net@freebsd.org Delivered-To: freebsd-net@FreeBSD.ORG Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 9148016A47C for ; Sat, 10 Jun 2006 19:09:34 +0000 (UTC) (envelope-from chris@hitnet.RWTH-Aachen.DE) Received: from ms-dienst.rz.rwth-aachen.de (ms-2.rz.RWTH-Aachen.DE [134.130.3.131]) by mx1.FreeBSD.org (Postfix) with ESMTP id 87B864969E for ; Sat, 10 Jun 2006 15:19:15 +0000 (GMT) (envelope-from chris@hitnet.RWTH-Aachen.DE) Received: from circe (circe.rz.RWTH-Aachen.DE [134.130.3.36]) by ms-dienst.rz.rwth-aachen.de (iPlanet Messaging Server 5.2 Patch 2 (built Jul 14 2004)) with ESMTP id <0J0N0073JH5ESX@ms-dienst.rz.rwth-aachen.de> for net@freebsd.org; Sat, 10 Jun 2006 17:17:39 +0200 (MEST) Received: from talos.rz.RWTH-Aachen.DE ([134.130.3.22]) by circe (MailMonitor for SMTP v1.2.2 ) ; Sat, 10 Jun 2006 17:17:38 +0200 (MEST) Received: from bigboss.hitnet.rwth-aachen.de (bigspace.hitnet.RWTH-Aachen.DE [137.226.181.2]) by smarthost.rwth-aachen.de (8.13.1/8.13.1/1) with ESMTP id k5AFHbx6016679; Sat, 10 Jun 2006 17:17:37 +0200 Received: from haakonia.hitnet.rwth-aachen.de ([137.226.181.92]) by bigboss.hitnet.rwth-aachen.de with esmtps (TLS-1.0:DHE_RSA_AES_256_CBC_SHA:32) (Exim 4.50) id 1Fp5DW-0005VB-3b; Sat, 10 Jun 2006 17:17:38 +0200 Received: by haakonia.hitnet.rwth-aachen.de (Postfix, from userid 1001) id C1BEE3F40A; Sat, 10 Jun 2006 17:17:37 +0200 (CEST) Date: Sat, 10 Jun 2006 17:17:37 +0200 From: Christian Brueffer In-reply-to: <20060610001900.GH22853@blar.home.comstyle.com> To: Brad Message-id: <20060610151737.GA4451@haakonia.hitnet.RWTH-Aachen.DE> MIME-version: 1.0 Content-type: multipart/signed; boundary="k+w/mQv8wyuph6w0"; protocol="application/pgp-signature"; micalg=pgp-sha1 Content-disposition: inline User-Agent: Mutt/1.5.11 X-Operating-System: FreeBSD 6.1-STABLE X-PGP-Key: http://people.FreeBSD.org/~brueffer/brueffer.key.asc X-PGP-Fingerprint: A5C8 2099 19FF AACA F41B B29B 6C76 178C A0ED 982D References: <200606091949.07501.mi+mx@aldan.algebra.com> <20060609235734.GG22853@blar.home.comstyle.com> <200606092005.47852.mi+mx@aldan.algebra.com> <20060610001900.GH22853@blar.home.comstyle.com> Cc: Mikhail Teterin , net@freebsd.org Subject: Re: Can't turn on Jumbo Frames on bge0 X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 10 Jun 2006 19:09:34 -0000 --k+w/mQv8wyuph6w0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Fri, Jun 09, 2006 at 08:19:00PM -0400, Brad wrote: > On Fri, Jun 09, 2006 at 08:05:47PM -0400, Mikhail Teterin wrote: > > ?'?????? 09 ??????? 2006 19:57, Brad ???????: > > > There is a mistake on that web-page. None of Broadcom's PCI Express > > > chipsets support Jumbo frames. > >=20 > > Indeed. Our bge(4) manual page says: > >=20 > > The BCM570x also supports jumbo frames, which can be configured vi= a the > > interface MTU setting. Selecting an MTU larger than 1500 bytes wi= th the > > ifconfig(8) utility configures the adapter to receive and transmit= jumbo > > frames. Using jumbo frames can greatly improve performance for ce= rtain > > tasks, such as file transfers and data streaming. > >=20 > > Mine is BCM5751 -- I guess, I'm out of luck... >=20 > I made sure the OpenBSD man page is very clear as to what models do suppo= rt Jumbo > frames after having a few end-users ask similar questions. >=20 > The BCM5700, BCM5701, BCM5703, BCM5704, BCM5714 and BCM5780 are capa= ble > of supporting Jumbo frames, which can be configured via the interfac= e MTU > setting. Selecting an MTU larger than 1500 bytes with the ifconfig(= 8) > utility configures the adapter to receive and transmit Jumbo frames.= Us- > ing Jumbo frames can greatly improve performance for certain tasks, = such > as file transfers and data streaming. >=20 > I would suggest doing the same thing for the FreeBSD man page since there= are a > number of chipset revisions which do not support Jumbo's. Thanks for the suggestion, I added this to our manpage. - Christian --=20 Christian Brueffer chris@unixpages.org brueffer@FreeBSD.org GPG Key: http://people.freebsd.org/~brueffer/brueffer.key.asc GPG Fingerprint: A5C8 2099 19FF AACA F41B B29B 6C76 178C A0ED 982D --k+w/mQv8wyuph6w0 Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.2.2 (FreeBSD) iD8DBQFEiuKRbHYXjKDtmC0RAn6LAKD5B9tijy9v0J5to8Z1crJJWG55pACg4Pkv LK3efpPYntnXA2gofUYTWVg= =QW30 -----END PGP SIGNATURE----- --k+w/mQv8wyuph6w0--