[6tsch] minutes webex 26 July 2013

[Thomas Watteyne <[e-mail]>]

All,

You will find the minutes of the last webex below.

Note the* summary of the action items* at the top.

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

Thanks to Xavi and Pouria for taking notes!

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

Thomas

---

Minutes Webex 26 July 2013, 6TSCH group

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

   1. Xavi Vilajosana
   2. Pouria Zand
   3. Thomas Watteyne

Present *(alphabetically)*

   1. Alfredo Grieco
   2. Maria Rita Palattella
   3. Pascal Thubert
   4. Pouria Zand
   5. Qin Wang
   6. Rene Struik
   7. Thomas Watteyne
   8. Tom Phinney
   9. Xavi Vilajosana

Recording

   - Webex recording (audio+slides,streaming)
   -
   https://cisco.webex.com/ciscosales/lsr.php?AT=pb&amp;SP=MC&amp;rID=70184657&amp;rKey=8558436cc958e8ce<https://cisco.webex.com/ciscosales/lsr.php?AT=pb&SP=MC&rID=70184657&rKey=8558436cc958e8ce>
    *[1 Hour 11 Minutes]*

Slides

   - slides_130726_webex.ppt<https://bitbucket.org/6tsch/meetings/src/master/130726_webex/slides_130726_webex.ppt>:
   slides shared during the call

Agenda

   - Administrivia *[2min]*
      - Approval minutes previous meeting
      - Agenda bashing
   - BoF updates *[2min]*
      - Reminder dates
      - Applications Area WG meeting
   - Charter discussion *[20min]*
      - Work Item 2 Rewording
      - Work Item 3 Renaming
      - Security Discussion
      - Mobility Discussion
   - Walk-through BoF slides *[30min]*
      - Agenda
      - Approval final slides
      - Merged slides format
      - Intro chairs
      - Questions?
   - Agenda pre-BoF meeting *[5min]*
      - Consensus final slides
      - Consensus merged slides
      - Uploading slides and charter
   - AOB *[1min]*

Action items

   - *Action item*: Thomas to announce pre-BoF meeting to the ML
   - *Action item*: Maria Rita to prepare last version of 2c slides.
   - *Action item*: Pascal is working on the security item.
   - *Action Item*: Thomas to push new language to repo, and send
   notification to ML.
   - *Action item*: Thomas to create slides to present
   draft-watteyne-6tsch-tsch-lln-context-02 at pre-BoF meeting
   - *Action item*: Pascal to create slides to present
   draft-thubert-6tsch-architecture-02 at pre-BoF meeting
   - *Action item*: Thomas to announce changes to the agenda to ML.

Minutes

   - *[08.01]* Meeting starts
      - recording started at 8:01
   - *[08.02]* Administrivia
      - Approval minutes previous meeting

      No concerns. Minutes approved.

      - Agenda bashing

      No concerns. Agenda approved.

      - *[08.05]* BoF updates
      - Reminder dates
         - as announced last week, pre-BoF meeting moved to *Tuesday
         9:30-11:15 in Tegel*
         - This meeting does appear in the official agenda
         - *Action item*: Thomas to announce pre-BoF meeting to the ML
      - Applications Area WG meeting
         - Monday 09.00-11:30
         - Pascal and Thomas will announce BoF there
         - all are welcome
      - BoF Questions:
         - Let's address them at the end of the meeting today
      - *[08.07]* Charter discussion
      - Work Item 2 Rewording
         - discussion about:
            - rewording work item 2: PCEP only handles a portion what is
            needed. This makes our work a larger task than required.
            - Work item 2 has been reworked:
               - Requirements and Architecture.
               - traffic from routing layer of the node to the PCE
               - traffic from 6top to the PCE
               - to manage both routes and schedule.
            - new text already in the charter
         - call for consensus

         No concerns raised. Language approved.

         - reword requires to reword 2c slides.
            - *Action item*: Maria Rita to prepare last version of 2c
            slides.
            - *Action item*: Pascal is working on the security item.
         - Work Item 3 Renaming
         - Work item 3 renamed to "6TSCH distributed routes and tracks
         management" for consistency with name of work item 2.
         - There were some questions on the ML about route management in
         the distributed case
         - Call for consensus on the new title

         Qin agrees with the explanation given by Pascal on the ML. No
         further concerns raised. Title approved.

         - Security Discussion
         - Context:
            - security is currently not a numbered work item.
            - Should we make it work item 7?
            - Leave the text as is and post the question in the BoF,
            Whether it has to be considered an other item or no.
         - *[Rene]* suggests to add the 7 in front of the work item as it
         is needed to have the security implications clear.
         - *[Pascal]* Can Rene prepare a new text to replace slide 15.
         - *[Rene]* Agrees to send note.
         - *[Rene]* We need to first come up with a requirements and
         architecture document before developing a solution.
         - *[Thomas]* Let's keep the charter text as-is for now, and wait
         for Rene's input.
         - *[Maria Rita]* if we define one more work item, then we need to
         redefine the work items in the slides.
         - *[Maria Rita]* I'm in favor of adding a 7 in front of the
         security text.
         - *[Rene]* If we do that, we need to set the scope of the work
         item to informational
         - *[Thomas]* shares his screen and edits the charter. Final text
         reads:

         7. Produce "6TSCH Security architecture and requirements", and
         depending on the security requirements identified in the document, the
         group may work on a security solution and ask for security
area review.
         This document will aim at Informational.

         - *[Thomas]* Call for consensus on the new language.

         No further concerns raised. New text language.

         - *Action Item*: Thomas to push new language to repo, and send
         notification to ML.
      - Mobility Discussion
         - context:
            - should we support mobility in the charter?
            - we have identified 2 scenarios where a small number of nodes
            can move inside a static network (moving cranes and mobile worker)
            - we want to keep those use cases, but avoid that people think
            about swarms of mobile robots when hearing mobility
         - *[Xavi]* Mobility is a strong word and is not the main role of
         these types of networks. We have to be careful with mobility
as this is not
         the core of that technology.
         - *[Pascal]* looking for a good term to talk about mobility in the
         2c slides.
            - Roaming
            - slow mobility
            - limited mobility
         - Pre-BoF meeting agenda.
      - What do we expect for that pre-BoF?
      - *[Pascal]* We could have the exact same agenda as in the afternoon,
      the pre-BoF meeting would a rehearsal.
      - *[Pascal]* We need to leave at 11.15 sharp
      - *[Pascal]* Still leaves us with 1h45, so enough time to go through
      the complete BoF material
      - *[Pascal]* We can present the drafts during the pre-BoF meeting
   - *[08.41]* Walk-through BoF slides
      - Changes to the Agenda
         - we need more time for open discussions and questions
         - proposal: move part 3 to the morning. Keep rest of time for open
         discussions and questions.
         - draft presentations will be in the morning out of an "official"
         session
         - also recall two extra drafts in the morning. Present all 6 drafts
         - *Action item*: Thomas to create slides to present
         draft-watteyne-6tsch-tsch-lln-context-02 at pre-BoF meeting
         - *Action item*: Pascal to create slides to present
         draft-thubert-6tsch-architecture-02 at pre-BoF meeting
         - *Action item*: Thomas to announce changes to the agenda to ML.
      - Approval final slides
         - Almost all slides are final.
         - *[Pascal]* How to we handle questions during the BoF, we need to
         be clear.
         - *[Thomas]* Proposal:
            - at opening of BoF, chairs announce that only clarifying
            questions (no discussion) will be taken during
presentation part (first
            hour).
            - BoF questions are shown during the presentations to allow
            people to reflect, but no discussion yet
            - after presentation, open mic for 20-25min
            - when discussion over, or we run out of time, questions will
            be asked to the audience. Last slides contains all questions.
         - Proposed questions:
         - is this a topic that the IETF should address?
         - are the goals of this WG clear, well-scoped, solvable, and
         useful?
         - how many people are willing to edit documents, comment
         documents, implement?
         - should a 6TSCH working group be formed?
         - should a 6TSCH working group NOT be formed?
      - *[09.08]* AOB
      - *[Rene]* During the BoF, it would be good to meet with the right
      people of other working groups (e.g. DICE, CORE) to discuss the
possibility
      of a security solution which reuses as much as possible. That
is, avoid to
      have to implement a completely different security solution for the
      different protocols in the protocol stack.
      - *[Thomas]* Good idea. Confirm that this is a "task" rather than an
      item for the BoF.
      - *[Rene]* yes.
   - *[09.12]* Meeting ends