On Jul 8, 2009, at 10:37 AM, Mikael Abrahamsson wrote:
On Wed, 8 Jul 2009, William Herrin wrote:
1. What's the point of increasing the max MTU from 9000 to 9012? If we want a higher MTU, why not just ask for one in the next standard?
From what I have been told, IEEE 802 refuses to make a Jumbo frame standard, for backwards compatibility reasons. Joe St Sauver's jumbo frame site : http://darkwing.uoregon.edu/~joe/jumbo-clean-gear.html shows what a mess this is. There isn't a standard now, and if you "ask for one in the next standard" you may be in for a long wait.
To me the only reason for this would be to lessen overhead on small packets. Also, afaik standard payload MTU is 1500 for ethernet, anything else is vendor extension, outside the standard.
Ethernet overhead compared to HDLC is pretty big...
-- Mikael Abrahamsson email: swmike@swm.pp.se
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