6lo WG Meeting - IETF 100, Singapore 13:30-15:30 Thursday Afternoon session I; Sophia room Chairs: Samita Chakrabarti, Gabriel Montenegro Secretary: James Woodyatt Responsible AD: Suresh Krishnan ---------------------------------------------- Minute takers: Dominique Barthel Jabber scribe: Behcet Sarikaya Introduction and draft status Montenegro Agenda bashing; blue sheets; scribe; Jabber scribe Samita not attending, nor James. Gabriel reminds of the Note Well. Draft status: notice IPR diclosure on -backbone-router -blemesh Carles not aware of any issue, awaiting implementation experience before asking WGLC. Soliciting independant implementations. -15.4e adopted, implemented in OpenWSN An Update to 6LoWPAN ND Pascal Thubert 3 drafts contributing ot the same topic. Split in 3 drafts for ease. Replacing a multicast protocol with unicast. Extensions to do ND over backbone. Kind of L3 association, akin L2 association in 802.11. Node can roam across backbone routers. https://tools.ietf.org/html/draft-ietf-6lo-rfc6775-update-10 Discuss updates from WGLC comments Just passed WGLC. Comments by Charlie. https://tools.ietf.org/html/draft-ietf-6lo-ap-nd-03 Goal is to validate through proof of ownership that the node on the new backbone router is the same that was previously associated to another backbone router (roaming). Avoids impersonation attack. There were some holes. Good comments from Bob M and René S. Fixed. Makes use of RSA or Ed curves. René published document at LWIG with tricks for light weight implementation. Will reference it in this draft, not paraphrase. Asked René to be in the co-author list. Ready for SecDir review. Gabriel: we had a good review by René. What is the use of a SecDir review on top? Pascal: Mohit also expert in this area. Carsten: pre hash (???) Pascal: we say prehash all the time. Gabriel: actually question to you, Suresh. What value of second review if René has reviewed and is co-author? René is going to be the one to do it anyway. Gabriel: will check with Rene. Pascal: will add René as co-author and give him time before do the final LC. https://tools.ietf.org/html/draft-ietf-6lo-backbone-router-04 Updates and status Stable for a long time, not much to say. Originates from 6LoWPAN times. Implementation exists. Ready for WGLC? Gabriel: comments from the room? Objections to LC? Pascal: need a reviewer for in-depth review. Gabriel: how many have read the draft? About 7 or so. Gabriel: anybody to do a thorough review? Alex Pelov and Charlie Perkins volunteer. 6lo Applicability and Use Cases Yong-Geun Hong https://tools.ietf.org/html/draft-ietf-6lo-use-cases-03 New revision and updates based on WG comments reminds of history of document. Goal of document is to help newcomers to understand the field. Big changes in document based on IETF98 comments. Added WiSUN and JupiterMesh scenarios. Added wired/wireless design space dimension, following Kerry's comment. Added LTE-MTC as potential technology in scope. Based on situation in South Korea. SK Telecom interest. The draft lists adaptations of 6LoWPAN stack that need to be addressed to target the 6lo technologies. Pascal: Smart Grid use case is multi-hop. Different characteristic. May want to mention it. Dave Robin: MS/TP addresses a much wider application area than "District Heating" that you mention. Yong-Geun: send information, we'll update the draft. Gabriel: are we ready, covered enough cases? Yong-Geun: think we are ready, we'll consult other authors Dave: will provide content for the section on MS/TP, did not expect the authors to know everything. Perhaps ready for WG LC by London Transmission of IPv6 Packets over Near Field Communication Younghwan Choi https://tools.ietf.org/html/draft-ietf-6lo-nfc-08 Goes through history of document. Got comments from Dave, James, Pascal. Goes through the comments received. In touch with NF forum, but no recent feedback. Think ready for WGLC. Gabriel: objections to WGLC? None. Transmission of IPv6 Packets over PLC Networks Jianqiang Hou https://tools.ietf.org/html/draft-hou-6lo-plc-02 Sucessive versions presented at Chicago, Prague and here. Two external SDOs, IEEE and ITU. Has liaised with both of them. Received comments from IEEE. Will attend ITU meeting in Dec to discuss this draft. Removed normative language to minimize conflict with other SDOs, putting it back after Gabriel discussion Gabriel: if we want no conflict, informational document. Gabriel: what is the goal of this document? Document what is done elsewhere? If you want a standards track doc, better have normative language, otherwise, wont have interoperable implementations. Jianqiang: guidance for PLC. So far, these standards refer to 6LoWPAN, fragmentation, Gabriel: if you want them to follow the guidance provided here, you have to have MUSTs, etc. Gabriel: Also follow other 6lo/6lowpan examples. Carsten: don't think can do a 6lo spec by pointing a 6LoWPAN document. Looks like there are gaps. Implementers have to figure out. Filling the gap will require normative statement. Would be good to do just that. Gabriel: looks not quite ready. Also, wait for December ITU meeting participation to hear back. Transmission of IPv6 packets over IEEE 802.15.6 WBAN Sajjad Akbar https://tools.ietf.org/html/draft-sajjad-6lo-wban-01 2nd presentation based on IETF99 comments Currently informational but intent to make it standards track, comments welcome. Goes through updates since -00 Specifically, added sub-sections on 5 aspects of adaptation. Describes SLAC, IPv6 LLA, HC, Rahul: could get better compression ratio by removing last byte (BAN ID) ???? Dave Thaler: privacy issues, see draft. Don't just pad, hash. Any questions, commens? Gabriel: want to re-iterate we have a document about privacy considerations. Any document coming out of this WG should follow these recommendations. Gabriel: this uses 15.6. Bob, any of this conflicting with work of IEEE? Are they aware of this? Bob Heile: 15.6 in the process of being adopted as a standard, passed the ballots, done deal. This is very timely and fruitful for them to review. Fragmentation Design team formation Update: Gabriel Montenegro In Prague, discussed about fragmentation. Large amount of interest. Finally did that. First meeting of DT here. Thomas, Carsten, Pascal, Carles, Gorry Fairhurst (Transport area). Expect an initial proposal by London. Still have to finish but shape is there.