Hi Rute,

I will contribute, but do you have a specific deadline for us to send you 
comments?

BR,
Rute Sofia
[[SC ] ]  Thanks.    If you provide comments in next few weeks, that will be 
good, I believe.

-Samita

On 07/19/2011 08:38 PM, Samita Chakrabarti wrote:
Hello all:

In 6lowpan workgroup, we developed  draft-ietf-6lowpan-nd which provides 
optimization of IPv6 ND for IEEE802.15.4 devices by avoiding all-node and 
solicited-node multicast messages for the most part and providing a method for 
device registration with a IPv6 Border router in a route-over topology  and as 
well as single-hop topology.

In the last IOT workshop at IETF, it has been brought up that the 6lowpan-nd 
like document may be useful in many other cases where devices are not IEEE 
802.15.4 devices but the nodes are basically energy-aware and like to save 
energy as much as possible.  'Hello' or periodic advertisement/solicitation 
messages generally work well for line-powered devices, yet reducing the 
periodic messages may be useful for less power consumption for each connected 
device and therefore reducing overall energy consumption of the network. 
Needless to say that the reduced number of messages and avoidance of periodic 
all-node or solicited-node multicast messages are critical for some low-powered 
device operations. With EUI-64 IID, a DAD is not necessary if the deployment 
may choose to do so.

Here is an attempt to put together the first draft for generic optimization for 
energy-aware IPv6 networks:


http://tools.ietf.org/html/draft-chakrabarti-nordmark-energy-aware-nd-00

Comments are welcome. Would like the help from the community to shape this 
document up for generic energy optimization for IPv6 ND  in applicable cases. 
This document also discusses a way of prefix dissemination for address 
auto-configuration which may be useful in future home network in a single 
prefix scenario. With the proliferation of internet-of-things, it might be 
helpful to do address auto-configuration in some isolated situations.
More work is needed in this document - it is the initial effort to begin with.

Regards,
-Samita


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--
Rute Sofia, PhD (rute.so...@ulusofona.pt<mailto:rute.so...@ulusofona.pt>)
Scientific Director for Technology
Research Unit in Informatics Systems and Technologies (SITI)
Coordinator of the Internet Architecture and Networking Lab (IAN Lab)
University Lusofona, Portugal
rute.so...@ulusofona.pt<mailto:rute.so...@ulusofona.pt>

http://siti.ulusofona.pt
Tel.: 217 515 500 Fax: 21 757 7006
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