Dell D800 (FBSD 5.2-release) Broadcom BCM5705M MTU/Jumbo Problem

From: Mike Hunter (mhunter_at_ack.Berkeley.EDU)
Date: 01/23/04

  • Next message: Andre Oppermann: "Re: Dell D800 (FBSD 5.2-release) Broadcom BCM5705M MTU/Jumbo Problem" 
    Date: Thu, 22 Jan 2004 17:12:06 -0800
To: freebsd-net@freebsd.org

    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 :|
     
    Thanks,

    Mike
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  • Next message: Andre Oppermann: "Re: Dell D800 (FBSD 5.2-release) Broadcom BCM5705M MTU/Jumbo Problem"