Ricky Beam wrote:
On Fri, 30 Jan 2009 17:00:00 -0500, Saku Ytti <saku+na...@ytti.fi> wrote:
Which standard are you referring to? AFAIK, nothing above 1500 is
standardised
None that have ever been accepted. From a quick google for
manufacturer support, 9216 looks like the most popular number. But,
as I said, it boils down to the largest frame *every* device on the
LAN will accept. If there is a single device that only supports
"9000", then that's your limit. And if there's a single non-JF device
in the LAN, it throws a wrench into the whole thing. (This appears to
be one of the sticking points as to why IEEE won't accept the addition
of JF to any specs.)
--Ricky
PS: The topic pops up again with super-jumbo frames in 10G networks.
For what it's worth, TCP will negiogate MSS and will work with
mismatched MTU in a single LAN segment. Other protocols (e.g. UDP) will
be borked though.
S