Jumbo frame Question

Randy Bush randy at psg.com
Fri Nov 26 14:24:57 CST 2010


> 1500 MTU made sense when network was 10 megabit/s.
> 
> Now that we have gig and 10GE (and soon general availability of 100GE), I 
> don't understand why 9000 makes people excited, if we're going to do a 
> serious effort towards larger MTU, let's make it 150000 then (100x) or at 
> least 64k.

the reason ieee has not allowed upping of the frame size is that the crc
is at the prudent limits at 1500.  yes, we do another check above the
frame (uh, well, udp4 may not), but the ether spec can not count on
that.

randy




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