I am in favor of moving the HC draft to the IESG with the minimal changes needed wrt fragmentation.
TCP header compression is a whole different beast (and a different charter), and in my opinion RPL specific message optimization should be left to the ROLL WG. Zach On Feb 25, 2010, at 9:21 , Jonathan Hui wrote: > > It would be helpful to know what people's expectations are relative to what > this specific draft should include relative to an acceptable timeline of > getting a document out. Few comments: > > - The WG currently does not have a proposal for TCP header compression, let > alone one that we have built some consensus around. > - The RPL protocol mechanisms and headers are still in flux. It is difficult > to propose a concrete way of compressing them without knowing what they will > look like. For example, within ROLL, we will be proposing ways to "pack" > lists of addresses such that common prefixes are only carried once within the > datagram. > - The general 6lowpan-hc format is generic enough to be used on top of other > fragmentation mechanisms and/or frame sizes. Do we really want to limit its > capabilities to a particular fragmentation and frame size? > > There always seems to be a tension between splitting functionality across > different drafts vs. delaying the current draft to "sneak" in new > functionality. I'm all for sneaking in fixes to RFC 4944 (i.e. simple > changes to fragmentation) or additional functionality for expediency if we > can realize that expedience. But waiting until we design a TCP header > compression mechanism that we can build consensus around probably isn't the > best approach, in my opinion, and should be left to a separate draft. > > So what do others think? > > (I will start a new thread specifically on fragmentation + > forward-compatibility so that we drive towards closure on that specific > issue). > > -- > Jonathan Hui > > On Feb 24, 2010, at 10:55 PM, Robert Cragie wrote: > >> Hi Geoff, >> >> I concur with Joseph's statements and thus do not support forwarding the >> draft to IESG yet. >> >> Robert >> Robert Cragie (Pacific Gas & Electric) >> >> Gridmerge Ltd. >> 89 Greenfield Crescent, >> Wakefield, WF4 4WA, UK >> +44 (0) 1924 910888 >> http://www.gridmerge.com >> >> >> >> Reddy, Joseph wrote: >>> >>> >>> Hi Geoff, >>> >>> I do not support forwarding this doc to IESG yet. I would like the >>> following issues addressed >>> >>> ** Investigate possible TCP header compression scheme >>> >>> ** Explain strategy for compressing RPL headers ( I understand this could >>> be done in the ROLL group, but I have not seen a definite statement either >>> way ) >>> >>> ** Resolve the "forward compatability" issue ( ideally, while maintaining >>> backwards-comptability ) >>> >>> >>> -Regards, Joseph >>> >>> >>> >>> ---------------------------------------------------------------------- >>> >>> Message: 1 >>> Date: Sat, 13 Feb 2010 00:56:31 -0700 >>> From: Geoff Mulligan <[email protected]> >>> Subject: [6lowpan] WGLC for 6lowpan HC draft >>> To: 6lowpan <[email protected]> >>> Message-ID: <1266047791.3643.48.ca...@dellx1> >>> Content-Type: text/plain >>> >>> Folks, >>> I realized that I have made a huge slip-up. The HC draft has languished >>> for the past few months. >>> At the meeting in Hiroshima we said that we would last call this draft, but >>> I failed to send out the actual last call. So... >>> >>> This note formally starts the WG Last Call for comments on >>> draft-ietf-6lowpan-hc-06, "Compression Format for IPv6 Datagrams in 6LoWPAN >>> Networks". >>> >>> The document can be found at: >>> http://www.ietf.org/id/draft-ietf-6lowpan-hc-06.txt >>> >>> The document is intended to be submitted by this Working Group to the IESG >>> for publication as a Standards Track document. >>> >>> Please review the document carefully (one last time), and send your >>> comments to the 6lowpan list. Please also indicate in your response >>> whether or not you think this document is ready to go to the IESG. >>> >>> Because of my gaffe this Last Call will end Wednesday February 24 2010 at >>> 2359 UTC. >>> >>> Thanks, >>> Geoff >>> >>> >>> >>> >>> >>> ************************************** >>> _______________________________________________ >>> 6lowpan mailing list >>> [email protected] >>> https://www.ietf.org/mailman/listinfo/6lowpan >>> >>> >> _______________________________________________ >> 6lowpan mailing list >> [email protected] >> https://www.ietf.org/mailman/listinfo/6lowpan > > _______________________________________________ > 6lowpan mailing list > [email protected] > https://www.ietf.org/mailman/listinfo/6lowpan -- http://www.sensinode.com http://zachshelby.org - My blog "On the Internet of Things" http://6lowpan.net - New book - "6LoWPAN: The Wireless Embedded Internet" Mobile: +358 40 7796297 Zach Shelby Head of Research Sensinode Ltd. Kidekuja 2 88610 Vuokatti, FINLAND This e-mail and all attached material are confidential and may contain legally privileged information. If you are not the intended recipient, please contact the sender and delete the e-mail from your system without producing, distributing or retaining copies thereof. _______________________________________________ 6lowpan mailing list [email protected] https://www.ietf.org/mailman/listinfo/6lowpan
