Hi Kris,
On Aug 27, 2007, at 11:57 AM, Kris Pister wrote:
>> 6lowpan requires a mesh routing protocol below the IP layer.
For sure the word "requires" is incorrect. I don't think that
there's any question at this point that it's possible to route
over. There is still reasonable debate over what the optimal thing
to do is, where different people have very different views of what
"optimal" means! :)
If I may reformulate your question ... "Considering that Route over
is MUST for the number of reasons discussed
on various Mailing Lists, why do we still need a mesh under routing
solution ?".
Thanks.
JP.
ksjp
Pascal Thubert (pthubert) wrote:
"6lowpan Mesh Routing"
JP> One of these "hot" topic. And of course, the main question will
to be
discuss whether Mesh-under routing is required if Route over is
available.
In particular, open questions are "If we claim a need for a mesh
under routing,
does that mean that we'll see a plethora of IDs showing how to adapt
all
protocols (e.g. MANET) used in a 802.15.4 environment ?"
[Pascal] Hi JP:
"While most routing protocols are defined above the IP layer, 6lowpan
requires a mesh routing protocol below the IP layer."
I'm also anxious about that sentence. The need for a mesh under vs.
routing over should be motivated; also, if that happens, then the
IETF
might not be the place for this work. It already happens in a
number of
places such as SP100, HART or 802.15.5.
It seems more consistent to focus on IP and delegate a routing over
protocol to the Routing Area. So I'd rather have 6LoWPAN support the
RL2N (RSN ML) efforts because they are defining a mesh technology
that
is L2 agnostic, fit into the IETF scope and benefit from the area
experience in routing, as opposed to proposing yet another mesh under
protocol that might not be well considered by the mentioned standard
organizations.
Pascal
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