On Thu, Jan 22, 2004 at 05:12:06PM -0800, Mike Hunter wrote: > Hi everybody, > > 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 > (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: > > celeste# ifconfig bge0 > bge0: flags=8802<BROADCAST,SIMPLEX,MULTICAST> mtu 1500 > options=1b<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# > > 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 :|
From looking at the code, BCM5705's don't support Jumbo Frames. -- Brooks -- 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
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