Date: Tue, 14 Sep 2010 19:19:20 -0700 From: David Newman <dnewman@networktest.com> To: freebsd-questions@freebsd.org Subject: jumbo frame support in bge(4) for BCM5704 Message-ID: <4C902D28.2040206@networktest.com>
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8.0-RELEASE amd64, Tyan S2882-D motherboard, Broadcom BCM5704C gigabit Ethernet transceivers Looking for clues on enabling jumbo support on BCM5704 chips. The bge(4) manpage claims this interface supports jumbo frames, as does Broadcom's data sheet. However, 'ifconfig bge0 mtu 9000' returns an error, as does 'ifconfig bge0 mtu 1500': ifconfig: ioctl (set mtu): Invalid argument Also, this thread claims the manpage anddata sheet are in error and that jumbos aren't supported: http://lists.freebsd.org/pipermail/freebsd-net/2006-June/010866.html The Linux tg3 driver for this chip does support jumbos up to 9000 bytes but that doesn't necessarily answer whether the hardware can get there. Thanks in advance for any clues on enabling jumbos on this system. dn
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