Date: Sat, 10 Jun 2006 17:17:37 +0200 From: Christian Brueffer <brueffer@FreeBSD.org> To: Brad <brad@comstyle.com> Cc: Mikhail Teterin <mi+mx@aldan.algebra.com>, net@freebsd.org Subject: Re: Can't turn on Jumbo Frames on bge0 Message-ID: <20060610151737.GA4451@haakonia.hitnet.RWTH-Aachen.DE> In-Reply-To: <20060610001900.GH22853@blar.home.comstyle.com> References: <200606091949.07501.mi%2Bmx@aldan.algebra.com> <20060609235734.GG22853@blar.home.comstyle.com> <200606092005.47852.mi%2Bmx@aldan.algebra.com> <20060610001900.GH22853@blar.home.comstyle.com>
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[-- Attachment #1 --] 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. > > > > Indeed. Our bge(4) manual page says: > > > > The BCM570x also supports jumbo frames, which can be configured via the > > interface MTU setting. Selecting an MTU larger than 1500 bytes with the > > ifconfig(8) utility configures the adapter to receive and transmit jumbo > > frames. Using jumbo frames can greatly improve performance for certain > > tasks, such as file transfers and data streaming. > > > > Mine is BCM5751 -- I guess, I'm out of luck... > > I made sure the OpenBSD man page is very clear as to what models do support Jumbo > frames after having a few end-users ask similar questions. > > The BCM5700, BCM5701, BCM5703, BCM5704, BCM5714 and BCM5780 are capable > of supporting Jumbo frames, which can be configured via the interface 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. > > 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 -- 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 [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.2.2 (FreeBSD) iD8DBQFEiuKRbHYXjKDtmC0RAn6LAKD5B9tijy9v0J5to8Z1crJJWG55pACg4Pkv LK3efpPYntnXA2gofUYTWVg= =QW30 -----END PGP SIGNATURE-----
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