Date: Thu, 22 Jan 2004 17:28:06 -0800 From: Brooks Davis <brooks@one-eyed-alien.net> To: Mike Hunter <mhunter@ack.Berkeley.EDU> Cc: freebsd-net@freebsd.org Subject: Re: Dell D800 (FBSD 5.2-release) Broadcom BCM5705M MTU/Jumbo Problem Message-ID: <20040123012806.GA608@Odin.AC.HMC.Edu> In-Reply-To: <20040123011206.GA1701@ack.Berkeley.EDU> References: <20040123011206.GA1701@ack.Berkeley.EDU>
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--0OAP2g/MAC+5xKAE Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Thu, Jan 22, 2004 at 05:12:06PM -0800, Mike Hunter wrote: > Hi everybody, >=20 > I'm going to be trying to get gigabit throughput between my laptop (Dell > Latitude D800 running 5.2-release) and a shuttle box running FreeBSD 5.1= =20 > (not in front of me at the moment.) As part of the process, I attempted > to increase the frame size on my laptop, only to be greeted with > disappointment: >=20 > celeste# ifconfig bge0 > bge0: flags=3D8802<BROADCAST,SIMPLEX,MULTICAST> mtu 1500 > options=3D1b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING> > ether 00:0b:db:99:d6:06 > media: Ethernet 1000baseTX <full-duplex> (none) > status: no carrier > celeste# ifconfig bge0 mtu 9000 > ifconfig: ioctl (set mtu): Invalid argument > celeste# ifconfig bge0 mtu 1501 > ifconfig: ioctl (set mtu): Invalid argument > celeste# ifconfig bge0 mtu 1500 > celeste# >=20 > The C file talks about being able to do jumbo frames when the mtu is big > enough...anybody know what I'm missing? My card is a "Broadcom BCM5705M" > and I'm running FreeBSD 5.2-release. When I asked google, it mostly > pointed me at comments in if_bge.c talking about jumbo frames :| =46rom looking at the code, BCM5705's don't support Jumbo Frames. -- Brooks --=20 Any statement of the form "X is the one, true Y" is FALSE. PGP fingerprint 655D 519C 26A7 82E7 2529 9BF0 5D8E 8BE9 F238 1AD4 --0OAP2g/MAC+5xKAE Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.1 (GNU/Linux) iD8DBQFAEHilXY6L6fI4GtQRAqmTAJ0bLYLuER274/UkCDPGI8C/tbTSbQCgyp1v dPlUNbBOUfWYXHBwupc7cPY= =e5Ib -----END PGP SIGNATURE----- --0OAP2g/MAC+5xKAE--
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