0n Wed, Oct 08, 2008 at 08:53:22AM -0400, Justin Piszcz wrote: 

    >Without jumbo frames only-- with gigabit, I believe you will see less CPU 
    >utilization using jumbo frames, but there are other problems to it-- for 
    >hosts that do not utilize jumbo frames vs. ones that do you may get bad 
    >performance, for gigabit, in my opinion, its best to leave it off unless 
    >you can ensure everything is jumbo-frame enabled.

Never mix MTU sizes.

You should always create a separate VLAN for your jumbo-frame nodes.

 -aW

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