Subject: [6tisch] Minutes, 09 October 2015 interim, 6TiSCH WG

From: "Pascal Thubert (pthubert)" <[email-masked]>
Date: Fri, 9 Oct 2015 16:19:46 +0000

October 2015 interim, 6TiSCH WG

Note: time are PST

Meeting info

  *   Date: 09 October, 7AM Pacific, 2PM UTC
  *   Timezones: http://www.worldtimebuddy.com/?qm=1&lid=100,12,5392171&h=100&date=2015-9-25&sln=14-15
  *   Webex link: https://cisco.webex.com/ciscosales/j.php?MTID=md64a0958ae4154c0553f056bf42b756a
  *   Meeting number: 203 137 703
  *   Meeting password: sixtus
  *   Audio connection:
     *   +1-866-432-9903 Call-in toll-free number (US/Canada)
     *   0120.312271 Japan Toll -Free

Taking notes (using Etherpad)

  1.  Xavi Vilajosana
  2.  Pascal Thubert
  3.  Thomas Watteyne

Action Items

  *   Xavi: reduce the space for unmanaged OFTF authors to meet and decide how to
  *   Pascal to clarify that item 3 is definining P2P 1-hop operation
  *   Malisa to send 3 security methods to ML

Present (alphabetically)

  1.  Pascal Thubert
  2.  Thomas Watteyne
  3.  ChongGang Wang
  4.  Diego Dujovne
  5.  Guillaume Gaillard
  6.  Malisa Vucinic
  7.  Maria Rita Palattella
  8.  Michael Richardson
  9.  Michel Weillette
  10. Nicola Accettura
  11. Pat Kinney
  12. Prashant Jhingran
  13. Qin Wang
  14. Randy Turner
  15. Rene Struik
  16. S.V.R. Anand
  17. Savio Sciancalepore
  18. Sedat Gormus
  19. S.V.R. Anand
  20. Tengfei Chang
  21. Tom Phinney
  22. Xavi Vilajosana
  23. Zhuo Chen

Agenda

  *   Administrivia [3min]
     *   Agenda bashing
     *   Minutes from Last meeting
  *   draft-wang-6tisch-6top-sublayer [30min]
  *   status security drafts (Michael, Yoshi?) [5min]
  *   work needed on OTF [10min]
  *   status rechartering [5min]
  *   AOB [2min]

Resources

  *   Webex meeting: https://cisco.webex.com/ciscosales/j.php?MTID=md64a0958ae4154c0553f056bf42b756a
  *   Webex recording: https://cisco.webex.com/ciscosales/lsr.php?RCID=93b5fd5d1e5e4eb59c3ce4cf46273a1a
  *   Wiki: https://bitbucket.org/6tisch/meetings/wiki/150925_webex
  *   Slides: https://bitbucket.org/6tisch/meetings/src/master/150925_webex/slides_150925_webex.ppt

Minutes

*        [07.06] Meeting starts

     *   Thomas goes through Note Well

*        [07.06] Agenda bashing

     *   Approve agenda.
        *   No issues raised. Agenda approved.
     *   Approval of the minutes last call.
        *   No issues raised. Minutes approved.
     *   draft-minimal is shipped to IESG, congrats to Xavi and Kris
     *   Yokohama agenda published
        *   6tisch meeting on Thursday afternoon
     *   Announcing 2nd 6tisch plugtest in 2-4 Feb 2016, Paris

*        [07.08] Sublayer draft

     *   Xavi Vilajosana: Just republished. The sublayer offers mechanism to allocate nodes on a distributed way but the policy to do that is kept sepaate.
        *   New terms defined, incliding Objective Function with an identifier to enable multiple.
        *   6top protocol is a messaging protocol to allocate cells between peers.
        *   simple protocols
        *   Presenting the protocol stack. request proposes a number of cells and response provides the ones selected.
        *   new draft presents messages and packet formats in a fashion similar to 15.4 information elements
        *   interesting is that each message has an op code indicating command and response-code
        *   list of cells are described by channel offset / slot offset
        *   OTF is one possible Objective function. Codes would be allocated by IANA
     *   Pascal Thubert: is the intelligence only on the requester?
     *   Thomas Watteyne: there is a minimum intelligence on the receiver since it manages at least collisions.
     *   Pat Kinney: On unmanaged. I undertsand that they can be used without being assigned. You probably want a lot less than 128 unmanaged. Maybe 2 or 3 for experimentations.
     *   Thomas Watteyne: agree let us have an action item
     *   Zhuo Chen: asking clarification on the 2 dslot frames
     *   Xavi Vilajosana: We have 2 slot frames. The first is for minimal. The second is managed by 6top and that is where slots installed by 6top will be. There may be other slotframes.
     *   Thomas Watteyne: This is an example that guarantees that we have bandwidth to boot with minimal.
        *   Simple for interop. But just an example that is recommended. The OF would define this.
     *   Nicola: is there a requirement of the slotframe relative sizes
     *   Thomas Watteyne: You can always figure when slotframe 0 is talking so no
     *   Nicola: Why term OF? anything ot optimize
     *   Thomas Watteyne: No, name mimics RPL, maybe not the right thing
     *   Nicola: Why 2 bytes for slot offset?
     *   Thomas Watteyne: Comes from 4e to enable other PHYs
     *   Pat Kinney: agreed with Thomas. The standards guarantees that lowest slot frame has prority
     *   Thomas Watteyne: Yes, collision will cause slotframe 1 to loose an opportunity to send to it looks bad
        *   draft says we want a group ID and a payload. Asking Pat if we can get an IE, a subIE or something assigner to us or IETF. Hiw can we get that?
     *   Pat Kinney: understands and agrees. This requires a letter from IANA to Bob Heile.
        *   I see enormous advantage for a group ID to be assigned. We ned to start communicating on this one
     *   Thomas Watteyne: will talk between chairs and follow up with IANA
     *   Xavi Vilajosana: Suggest to associate an OF number to the OTF draft
     *   Diego: we'll meet and will discuss renaming. I agree
     *   Randy Turner: the term is used a lot. Make sure it is the correct term. People might have assumptions
     *   Pascal Thubert: also disagree with the 6 that has a very wide scope. Should narrow to 6TiSCH
     *   Thomas: Aggressive deadlines for interop in February; We need to stabilize 6top and OTF by end 2015 to enable coding the stuff.

*        [07.08] Security draft

     *   Michael not joined yet

*        [07.42] Rechartering

     *   Pascal summarize
     *   removed the "e" in 802.15.4e

o   added 3 new work items:

        *   OTF
        *   secure bootstrap
        *   define what a track is and DETNET requirements

o   we don't want to distract the work on OTF, but for the people who don't work on OTF.

        *   Pascal thanks Anand for review of 6tisch-4detnet

o   Idea is to push the new charter rapidly

     *   WG chairs and AD will work on new charter
     *   charter is contract with IESG, milestone and non milestone documents.

o   Interop guidelines and useful sustaining documents.

o   Question in the Charter. "For IP traffic". Pascal votes to maintain IP traffic in opposition to remove IP.

o   It is safe to keep the OTF activity close to the IP routing.

     *   PAT: suggests to add a footnote. Non-ip traffic is not precluded from that effort in the future. (aiming to support other types of traffic)
     *   Pascal: we want to say that for the time being we work on IP traffic. This does not imply that we will not work on other types of traffic in the future.
     *   PAT: Agrees, he is worried about people thinking that the affirmation restricts other types of traffic.
     *   ChongGang: Limited to the IP traffic? I think the work can be applied to both IP and non-ip traffic.
     *   Also clarify that the operation we target is one-hop, that is hop by hop negotiation.
     *   Maria Rita: suggests to remove the paragraph at the end but let a little text indicating that we will participate/support interop events. Remove some details as it is too long.
     *   Pascal: if we charter to do the security work do we we have a critical masss in the security working team to move forward on that?
     *   Rene: not immediately but in 3month time or so he can try to rechart the sub group.
     *   Michael RIchardson: are we going to have a phone conference the 23rd of October. If so I can join it and discuss about the new activity in the join process.
     *   Pascal: suggest to close the security ML and move discussion at the ML.
     *   Michael agrees
     *   Malisa: the WG is divided in different directions. It is not that the group is not finding the right work force.
     *   Michael: Ask Malisa to send an email to the ML indicating the 3 security approaches he sees.
     *   Malisa agrees.

*        [07.52] AOB

Chonggang: track requirement, detnet requirements. Can you give some more advice on how to move forward? He send an email about that. Can we move forward. Action: pascal to review the draft and push to move this forward. Malisa: quite some discussions between security, not problem of workforce, but agree on direction Michael: please send to ML

  *   [08.00] Meeting ends