Subject: [6tisch] Minutes webex 17 January 2013

From: Thomas Watteyne <[email-masked]>
Date: Sun, 19 Jan 2014 12:11:07 -0800

All,

You will find the minutes of the last webex below.

FYI, all the minutes and slides are archived a
https://bitbucket.org/6tisch/meetings/.

Thanks to Xavi, Pascal and Dominique for taking notes!

As usual, please fix anything we might have missed directly in the e-mail
and reply.

Thomas

----

Minutes Webex 17 January 2014, 6TiSCH WG

Note: timestamps in PST.
Taking notes *(using Etherpad)*

   1. Xavi Vilajosana
   2. Thomas Watteyne
   3. Pascal Thubert
   4. Dominique Barthel

Present *(alphabetically)*

   1. Alaeddine Weslati
   2. Diego Dujovne
   3. Dominique Barthel
   4. Guillaume Gaillard
   5. Elvis Vogli
   6. Kuor Hsin Chang
   7. Maria Rita Palattella
   8. Michael Richardson
   9. Pat Kinney
   10. Paul Duffy
   11. Pascal Thubert
   12. Pouria Zand
   13. Raghuram Sudhaakar
   14. Rene Struik
   15. Rouhollah Nabati
   16. Sedat Gormus
   17. Shitanshu Shah
   18. Tengfei Chang
   19. Thomas Watteyne
   20. Xavi Vilajosana

Recording

   - Webex recording (audio+slides,streaming)
   -
   https://cisco.webex.com/ciscosales/lsr.php?AT=pb&amp;SP=MC&amp;rID=74381932&amp;rKey=1a0ae2558fa4cb76<https://cisco.webex.com/ciscosales/lsr.php?AT=pb&SP=MC&rID=74381932&rKey=1a0ae2558fa4cb76>
    *[68min]*

Slides

   - slides_140117_webex.ppt<https://bitbucket.org/6tisch/meetings/src/master/140117_webex/slides_140117_webex.ppt>:
   slides shared during the call

Action Items

   - *Shitanshu* to forward announcement of draft to 6TiSCH ML.

Agenda

   - Administrivia *[4min]*
      - Approval agenda
      - Approval minutes last call
      - IETF 89: requests for sessions
   - updates *[10min]*
      - update security discussion
      - update plugfest
      - update YANG model and chunk definition
   - deterministic communication *[Shitanshu Shah]* *[15min]*
   - draft-ietf-roll-rpl-industrial-applicability *[Michael Richardson]*
   *[10min]*
   - use cases and ToS bits *[Pascal Thubert]* *[10min]*
   - AOB *[1min]*

Minutes

   - *[08.05]* Meeting starts
   - *[08.06]* Administrivia
      - Approval agenda
         - *[Thomas]* Pat Kinney will make an announcement about the IEEE
         802.15 "802.15.IG6T" IETF Liaison 6TiSCH Interest Group (IG 6T)

         No other issues raised. Agenda approved.

         - Approval minutes last call

      No issues raised. Agenda approved.

      - IETF 89: requests for sessions
         - Today is deadline for requesting slots at IETF89
         - 2 sessions requests:
            - WG meeting (90min)
            - plugfest (3h)
         - Suggested to be on the same day, but all depends on scheduling.
         - Preliminary agenda published on 01/31.
      - 802.15.IG6 *[Pat]*
         - Pat Kinney chairs different groups, including Vice Chair
         IEEE802.15.
         - IEEE 802.15 "802.15.IG6T" IETF Liaison 6TiSCH Interest Group (IG
         6T) was created
         - see announcement at
         http://www.ietf.org/mail-archive/web/6tisch/current/msg01729.html
         - Goals
            - Keep the interest going and act as liaison see how to help.
            - What 6TiSCH changes in 15.4e, help as much as IEEE can. Also
            relay to 6TiSCH, a 2 way street.
            - Discussing about 6tisch is and discuss what matches
            802.15.4e, goal to enable 6tisch as much as they can
            - Listen for inputs and see what we can do
            - Get 6TiSCH requirements for changes on IEEE802.15.4e so both
            sides can improve.
         - First meeting on Monday.
      - *[Thomas]* Is the idea that most us join the reflector?
      - *[Pat]* Yes, the reflector is open, and the reflector will be used
      to inform about the activity of the IG.
   - updates
      - update security discussion *[Michael Richardson]*
         - Want to have a security process a least similar to ISA100 and
         WirelessHART. Actively looking at ZigBee IP profile and PANA,
trying to
         understand byte space requirements and overhead.
         - Typical deployments are created in rooms before deployment so
         networks might collapse. This imposes more challenges on the
security part.
      - update plugfest *[Xavi Vilajosana]*
         - *[Thomas]* Xavi offered to serve as a chair. Great support from
         mailing list for nomination. Rough consensus on nomination from WG.
         - Xavi e-mailed several people, already got confirmation that
         several people will come with hardware.
         - 3 types of activities
            - interoperation:
               - basic TSCH / minimal network formation
               - add RPL
               - add OTF scheduling
            - demonstration
            - tools:
               - Any tool that can be shared with the community is of
               interest
            - *[Thomas]* there is now a page linked from the home page in
         bitbucket
            - https://bitbucket.org/6tisch/meetings/wiki/plugfest
            - Lists milestones. Please contact Xavi if you wish to
            participate by the next call, so that Xavi gives an
overview at the next
            call.
         - *[Xavi]* needs a description of the demo / test to organize an
         agenda for the plugfest.
      - update YANG model and chunk definition
         - Qin is not present (travelling). Thomas suggests to take the
         discussion to the mailing list
         - *[Xavi]* We uploaded yesterday the YANG model. It is in the
         bitbucket repo as a .yang file.
         - *[Thomas]* Deadline for all drafts including -00 is 2/14, one
         month away.
         - *Thomas* asks *Xavi* to submit a -00 soon and then make an
         update based on comment before deadline.
         - *Xavi* confirms that this will be done in that way.
      - *[08.27]* Deterministic Forwarding PHB *[Shitanshu Shah]*
      - See
      http://tools.ietf.org/id/draft-svshah-tsvwg-deterministic-forwarding-00.txt
      .
         - draft presented at TSVWG WG (transport area WG)
      - goals:
         - agree on the requirements and need for a new DSCP (DiffServ Code
         Point)
         - if we agree, bring to TSV WG which will have to decide on
         adoption
      - motivation:
         - Need for a new DiffServ Code Point (DSCP) for deterministic that
         is different from low latency
         - forwarding requirements for time sensitive traffic
         - Expedited Forwarding (EF) PHB (Per-Hop Behavior) does not
         guarantee time scheduled service
         - New Deterministic Forwarding (DF) PHB proposed
      - use cases:
         - communication between nodes in a single LLN
         - communication between nodes in different LLNs, through the
         backbone
      - DF PHD
         - not mandating any specific method for provisioning (command line
         interface, signaling protocol, etc.)
         - provisioning of fixed/relative time for scheduling
         - provisioning of max data to be transmitted
      - Classification
         - packet inspection, classification in the DF class
         - maybe simple L2 or L3 header, maybe deep packet inspection
         - *[Pascal]* may be hard to do classification to find relevant
         information. Work happening at 802.1 TSN (Norm Finn) which
general use MPLS
         label as flow identifier. Will find that early in the packet.
         - *[Shitanshu]* May require admission control. If there is a way
         not to have deep packet inspection, can help.
      - Scope:
         - in end-to-end path, if domain that does no support DF, proposal
         is to aggregate in EF PHB.
      - *[Pascal]* ECN set when congestion. We can combine with flow label
      and/or DSCP.
      - *[Thomas]* Can you send information to ML?

      Action item: *Shitanshu* to forward announcement of draft to 6TiSCH
      ML.

      - *[08.49]* draft-ietf-roll-rpl-industrial-applicability *[Michael
   Richardson]*
      - roll WG has some applicability statements in different env.
      - one is on industrial env.
      - security area review. 4 issues raised and logged, see this meeting
      slides.
      - draft says RPL can be used in a number of the phases
      - concern: state of the technology: operating best effort in
      industrial is hard. Applicability statement says that we can use RPL for
      boostrapping, emergency, but not for actual operation of the plant.
      - For control loops RPL does not seem adequate? It is adequate for
      monitoring applications including industrial.
      - The applicability statement does not make this statement clear
      enough.
      - ROLL WG Limited ability to review and analyse the document. Concern
      that ROLL is not able to provide an accompanying set of documents and
      efforts to support industry on that use case.
      - *[Thomas]* The statement that RPL is not applicable is not
      applicable in industrial settings? In more distributed approaches RPL is
      still useful.
      - *[Michael]* there are industries where there is no hard-control
      (never will use 6tisch).
      - *[Pascal]* RPL applies in industrial comes with 6tisch:
      - *[Michael]* Wants to know if there is any case where RPL can be
      used for industrial applications without 6TiSCH. If the answer
is NO, then
      applicability statement in industrial scenarios of RPL won't
make sense in
      the scope of ROLL but in the scope of 6TISCH.

      Action item: *Michael* to start thread on ML.

      - *[09.14]* use cases and ToS bits *[Pascal Thubert]*

   We are running out of time. Pushed to next call.

   - *[09.15]* AOB

   No other business raised.

   - *[09.15]* Meeting ends