10.3.1 Jumbo frame support

cadzcadz
Posted:
in macOS edited January 2014
Any clue how to enable jumbo frames (MTU 9000) in OSX. I was told by Apple the G5 internal gigabit interface "does not support jumbo frames". Put an Asante card in two machines, which does support MTU's of 9000 and still canot get it to set to anything over 1500. Tried via control panel (there is an option, but its greyed out) as well as via ifconfig. Figured if you can't do it with ifconfig it can't be done? Anyone hear anything about Jumbo and 10.X?



Thanks

Comments

  • Reply 1 of 2
    nothingnothing Posts: 23member
    Quote:

    Originally posted by cadz

    Any clue how to enable jumbo frames (MTU 9000) in OSX. I was told by Apple the G5 internal gigabit interface "does not support jumbo frames". Put an Asante card in two machines, which does support MTU's of 9000 and still canot get it to set to anything over 1500. Tried via control panel (there is an option, but its greyed out) as well as via ifconfig. Figured if you can't do it with ifconfig it can't be done? Anyone hear anything about Jumbo and 10.X?



    Thanks



    I've done it on the PCI card of an Xserve. The card AND driver have to support it.



    You are 100% correct, though, if you can't do it with ifconfig, you can't do it at all.



    Keep trying!!
  • Reply 2 of 2
    cadzcadz Posts: 3member
    Actually had the product rep in here last week and he verified that there is currently no jumbo support in OSX without the Apple card and driver. Too bad, Apple is sort of shooting themselves in the foot with this one. G5's have no jumbo support and VERY poor gigabit performace when compared to Linux, Irix, Solaris etc. Less than half the performace of Linux overall. SMB is even worse in 10.3.1 OSX. I have the Apple supplied card straight out of an Xserve and am trying to get ahold of the driver now. Only OSX Server ships with the driver...



    "Worlds Fastest PC...with worlds slowest networking!"



    A $40 PCI card in a $300 PC running linux will smoke the G5 networking hands down. Who cares how fast the procs are when you can't data to it fast enough!



    I'm hoping 10.3.2 and subsequent updates will address. Sounds like we're not alone here in our complaints.
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