Subject: [6lo] New Version Notification for draft-thubert-6lo-rpl-nhc-00.txt

From: "Pascal Thubert (pthubert)" <[email-masked]>
Date: Thu, 28 Aug 2014 15:30:40 +0000

Dear all

There is a general agreement that a 6LoWPAN compression method would be valuable for the RPL option.
draft-thubert-6lo-rpl-nhc proposes another technique that naturally extends RFC 6282 for this purpose. 

Differences from other proposals are as follows:
- RPL information would be found in an NHC as opposed to a new dispatch. This is more in line with the way other headers are processed
- The Rank can be expressed in its full form (2 octets) or compressed to one Octet. This is in line with RFC 6552 and others.
- The Format is not mutable hop by hop, and depends only on the Instance and the Objective Function

It is unclear at this point whether the 6lo work will cause the flow label based proposal to disappear. 
What is clear, though, is that the 6TiSCH minimal RPL support draft will ship to IESG by the end of this year.

Since implementations and interops are expected to follow quickly, and since the HbH technique is such a relative waste over the classical 802.15.4, the minimal draft will need to recommend a compression mechanism for the RPL information. It would be excellent that 6lo decides rapidly whether to work on this topic - or not -, and if so, promote a draft to complete the work as swiftly as possible.

What do you think?

Pascal

-----Original Message-----
From: [email-masked] [mailto:[email-masked]] 
Sent: jeudi 28 août 2014 17:11
To: Pascal Thubert (pthubert); Pascal Thubert (pthubert)
Subject: New Version Notification for draft-thubert-6lo-rpl-nhc-00.txt

A new version of I-D, draft-thubert-6lo-rpl-nhc-00.txt has been successfully submitted by Pascal Thubert and posted to the IETF repository.

Name:		draft-thubert-6lo-rpl-nhc
Revision:	00
Title:		A compression mechanism for the RPL option
Document date:	2014-08-28
Group:		Individual Submission
Pages:		8
URL:            http://www.ietf.org/internet-drafts/draft-thubert-6lo-rpl-nhc-00.txt
Status:         https://datatracker.ietf.org/doc/draft-thubert-6lo-rpl-nhc/
Htmlized:       http://tools.ietf.org/html/draft-thubert-6lo-rpl-nhc-00

Abstract:
   This document proposes a compression mechanism for the RPL option.
   This operation saves up to 48 bits in each frame compared to RFC
   6553.

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