> No, I doubt it will change. The CRC algorithm used in
Ethernet is
> already strained by the 1500-byte-plus payload size.
802.3
> won't extend
> to any larger size without running a significant risk
of the CRC
> algorithm failing.
I believe this has already been debunked.
> From a practical side, the cost of developing,
qualifying,
> and selling
> new chipsets to handle jumbo packets would jack up the
cost of inside
> equipment. What is the payback? How much money do you
save going to
> jumbo packets?
I believe that the change is intended to apply to routers
and the
ethernet switches that interconnect them in PoPs and NAPs
and exchange
points. Therefore the cost of a small chipset modification
is likely to
be negligible in the grand scheme of things.
As for numbers, it is not dollar figures that I want to see.
I would
like the people who have jumbo packets inside their end-user
networks to
run some MTU discovery and publish a full MTU matrix on all
paths on the
Internet. That way we can all see where there is end-to-end
support for
large MTUs and people who want to make buying decisions on
this basis
will have something other than vendor assurances to show
that a network
supports jumbograms.
--Michael Dillon
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