Anthony,
There was a good bit of discussion on the partitioning of the dispatch
field following the San Diego meeting. Many felt that ideally, the protocol
identifier would have been carried in the 15.4 header, so we were back
filling. There was discussion about utilizing only a small fraction of the
initial dispatch address space, so there would be more room for coexistence
with other protocols. There was not a lot of discussion about whether we
could define the initial dispatch in such a way that it would provide
backward-going coexistence pre-existing protocols, since none of the
proprietary or industry forum protocols seemed to have considered leaving
room for others to fit alongside. Perhaps the forward-going hope was that
new efforts would at least live along side of 6LoWPAN and all the protocols
built on top of it.
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