Thierry - to be clear, your input is important to the IETF and will be considered in any future work on the IETF 6LoWPAN specifications. Thank you for that valuable input.
It would be very helpful to the IETF to receive input in a Liaison Statement in addition to the input in your e-mail.
- Ralph
Dear Michael, Ines, Samita,
Gabriel, Pascal, Thomas,
We recently discovered that there are
ongoing discussions to re-use the 6LoWPAN dispatch type assigned by IANA
for Mesh-Under routing (as specified in RFC 4944) for Route-Over purposes.
As one of the biggest 6LoWPAN network
operators (35 million smart meters to be deployed in France - first deployments
have started) and considering other massive roll-outs on progress in Asia
with the G3-PLC technology (using the 6LoWPAN/IPv6 mechanisms), we are
deeply concerned by the deprecation of this dispatch type with respect
to the sustainablility of the IPv6 framework considering potential long-term
evolutions in our IP telco architecture. We would like to draw your attention
to the fact that the lifespan of smart meters (minimum of 20 years - garanteed
by the manufacturer), and more generally smart grid connected devices,
are not to be compared with the much shorter lifespans of consumer electronics.
We strongly disagree with making
any modifications endangering backwards compatibility with already deployed
6LoWPAN/IPv6 systems and hope that IETF will discourage this as well.
We suggest that one of the alternate
solutions, already proposed by the interested parties, should be prefered
(as the overhead generated is comparable).
Thank you very much for your consideration,
Best regards,
Thierry Lys, Cédric Chauvenet and Cédric
Lavenu
>We're also sending this email
to ietf@xxxxxxxx as it doesn't immediately appear clear where to discuss
this, as there are many possible WGs that might be relevant, but also that
this concerns deprecation of IANA allocations which have been made through
IETF consensus, making this list possibly relevant.
> G3-PLC protocol is also known
as Recommendation ITU-T G.9903 (available for download on ITU web site)
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| Thierry Lys
Metering Division
Building Crysalis - 345 Avenue Georges Clémenceau - 92000 Nanterre - France
Tel : +33 (0)1 81 97 67 77 |
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