Subject: [6tisch] Minutes webex 04 July 2014

From: Thomas Watteyne <[email-masked]>
Date: Wed, 9 Jul 2014 10:37:42 -0700

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 04 July 2014, 6TiSCH WG

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

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

Present *(alphabetically)*

   1. Diego Dujovne
   2. Dominique Barthel
   3. Giuseppe Piro
   4. Guillaume Gaillard
   5. Ines Robles
   6. Maria Rita Palattella
   7. Michael Richardson
   8. Nicola Accettura
   9. Pascal Thubert
   10. Pouria Zand
   11. Raghuram Sudhaakar
   12. Rene Struik
   13. Sedat Gormus
   14. Thomas Watteyne
   15. Xavi Vilajosana

Connection details

   - Webex:
   https://ciscosales.webex.com/ciscosales/j.php?ED=219615007&UID=481905242&PW=NZTRkNDAwOTE1&RT=MiMyMw%3D%3D
   - Etherpad:
   http://etherpad.tools.ietf.org:9000/p/6tisch?useMonospaceFont=true
   - Topic: 6TiSCH Weekly
   - Time: 8:00 am, Pacific Daylight Time (San Francisco, GMT-07:00)
   - Meeting Number: 206 802 913
   - Meeting Password: sixtus
   - CCM: +14085256800x206802913

Resources

   - Webex recording:
   https://cisco.webex.com/ciscosales/lsr.php?RCID=cafae4d4ae394fac893f762b123e2695
    *[61min]*
   - Wiki: https://bitbucket.org/6tisch/meetings/wiki/140704_webex
   - Slides:
   https://bitbucket.org/6tisch/meetings/src/master/140704_webex/slides_140704_webex.ppt

Action Items

   - *all* to review agenda and suggest changes.
   - *Chairs* to coordinate with Qin about presentation 6top drafts at
   IETF90
   - *Thomas* to increase security discussion time to 20min (10min for
   sides, 10min for discussion)
   - *Thomas* to prepare skeleton slides for IETF90
   - *Presenters* to prepare slides for by Friday 7/11, upload on bitbucket
   or send to chairs
   - *Nicola* to send comment about wrong duty cycle calculation in minimal
   draft to ML.
   - *Pouria* and *Raghuram* to review the running OTF draft in bitbucket
   before publication.

Agenda

   - Administrivia *[2min]*
      - Approval agenda
      - Approval minutes last call
   - IETF90 *[15min]*
      - important dates
      - plugfest update *(Ines)* *[5min]*
      - tentative agenda *(Thomas)* *[5min]*
      - next steps: slides *[5min]*
   - Overview draft changes *[35min]*
      - draft-wang-6tisch-coapie-00 *(Qin)* *[5min]*
      - draft-ietf-6tisch-terminology-02 *(Maria Rita)* *[10min]*
      - draft-ietf-6tisch-architecture-03 *(Pascal)* *[5min]*
      - draft-ietf-6tisch-minimal-01 *(Xavi)* *[3min]*
      - draft-ietf-6tisch-6top-interface-01 *(Qin)* *[3min]*
      - draft-wang-6tisch-6top-sublayer-01 *(Qin)* *[2min]*
      - draft-ietf-6tisch-coap *(Raghuram,Pouria)* *[2min]*
      - draft-dujovne-6tisch-on-the-fly-03 *(Diego)* *[5min]*
      - draft-richardson-6tisch-security-architecture *(Michael)* *[time
      permitting]*
   - Next meetings *[1min]*
   - AOB *[2min]*

Minutes

   - *[08.05]* Meeting starts

   Recording starts.

   - *[08.06]* Administrivia
      - *Pascal* reminds Note Well
      - Approval agenda

      No issues raised. Agenda approved.

      - Approval minutes last call

      No issues raised. Minutes last call approved.

      - *Pascal* indicates that discussion about #18 was not captured in
      the minutes of last call. No need to update.
         - issue: http://trac.tools.ietf.org/wg/6tisch/trac/ticket/18
         - minutes: https://bitbucket.org/6tisch/meetings/wiki/140620_webex
      - IETF90
      - important dates
         - draft cut-off date today at midnight
         - IETF90 Agenda is final. Might still change during the event.

         https://datatracker.ietf.org/meeting/90/agenda.html

         - 6TiSCH WG meeting Monday 21st July, 15:20
      - plugfest update *(Ines)*
         - guidelines are available
         - document is available and we are all welcome to add elements

         https://docs.google.com/document/d/1p6b8Rpx5mc9-xbfRbF2bzeSzOhLwYmYOOcxLS25DMEw/edit?usp=sharing

         - 10 participants confirmed
         - Ticket is open and Stephanie is working on our requests.
      - tentative agenda *(Thomas)*
         - *[Thomas]* by Monday we'll update to the IETF wiki page and will
         have another week to finalize

         https://datatracker.ietf.org/meeting/90/agenda/6tisch/

         - chartered drafts 35min
         - 15min plugfest report
         - Unchartered items at the end. CoAP IE draft, On the fly, Updated
         draft of security but authors won't be there.
         - security issues authors will not be there

         Action item: *all* to review agenda and suggest changes.

         - *[Pascal]* asks whether Qin will present the interface and
         sublayer drafts.
         - *[Thomas]* needs to add this drafts to the agenda.

         Action item: *Chairs* to coordinate with Qin about presentation
         6top drafts at IETF90

         - *[Pascal]* 15min for security is probably too short

         Action item: *Thomas* to increase security discussion time to
         20min (10min for sides, 10min for discussion)

         - next steps: slides
         - prepare slides

         Action item: *Thomas* to prepare skeleton slides for IETF90

         - *[Pascal]* proposes to have meeting next Friday and have the
         slides for then.

         Action item: *Presenters* to prepare slides for by Friday 7/11,
         upload on bitbucket or send to chairs

         - Overview draft changes
      - draft-wang-6tisch-coapie-00 *(Qin)* presented by *Xavi*
         - *[Xavi]* new draft we talked about at the last meeting to be
         merged with sublayer draft

         running version at
         https://bitbucket.org/6tisch/draft-wang-6tisch-6top-coapie/

         - container for 6top-to-6top communication, optionally using the
         block method
         - an IE (layer 2) to transport CoAP information
         - Qin will publish today
         - *[Thomas]* let's coordinate to publish, Qin may not be available
         today
         - This is a strange idea so we need to validate support by the
         group in Toronto.
         - Big impact on 3 drafts
         - *[Michael]* Will you present at CORE? Need to let the chairs
         know. For sure, let CoAP Chairs know that we are doing that work.
         - Allocate IE number from IEEE? This needs to be done.
         - *[Thomas]* We discussed about creating an IE identifier for IETF
         and let IETF manage sub-IEs.
         - Have an action to make it happen: coordinate with CoRE chairs,
         as well as with IEEE.
      - draft-ietf-6tisch-terminology-02 *(Maria Rita)*
         - Took into account feedback from Patrick
         - Updated references
         - definitions like cell and chunks. Clarified through emails.
         Should be inside the CUD matrix. That is a last minute change.
         - *[Pascal]* Definitions or reused cell that can receive/send
         needs to be defined.
         - *[Thomas]* do we really need dedicated terminology for that?
         - *[Pascal]* we should describe this particular case in the
         architecture.
         - *[Thomas]* thinks that there is no a need for an specific term
         but can be added to the architecture draft.
      - draft-ietf-6tisch-architecture-03 *(Pascal)*
         - Idea of opportunistically reuse traffic when the track is not
         being used.
         - Added some text to indicate the relation to deterministic
         forwarding
         - Work with TSVWG (Transport Area WG), work with Shitanshu Shah
         and David Black, need people at the meeting to support.
         - Structural changes, moved sections
         - Will submit today.
      - draft-ietf-6tisch-minimal-01 *(Xavi)*
         - submitted the draft last week
         - lots of discussion
         - variable slotframe size, only 1 active slots
         - network with lots of traffic -> short slotframe, and vice-versa
         - discussion about how slotframes announced in network: use IE
         - recommend use of 10ms slots, only recommendation, support
         different slot lengths, but node has to use the timeslot
template IE to
         specific the timings inside the slot. default saves 24 bytes.
         - *[Thomas]* implementation will be presented at plugfest?
         - *[Xavi]* yes
         - *[Nicola]* duty cycle in final part of page 3, calculation wrong
         (1.01%, but it's 0.99%)
         - *[Pascal]* you can publish new version which fixes that
         - *[Thomas]* Nicola, could you send e-mail to ML?
         - *[Nicola]* will do

         Action item: *Nicola* to send comment about wrong duty cycle
         calculation in minimal draft to ML.

         - *[Pascal]* suggests rewording on sentence
         - *[Xavi]* by default, we use the 10ms timeslot. By default, we
         are required to send the template. Can be 1-byte if default,
or full version
         - *[Pascal]* please word exactly like what you said
         - *[Pascal]* we can't MUST the 10ms, but we can recommend to
         clearly mark implementation that cannot support 10ms
         - *[Pascal]* device that cannot support the recommended value
         should indicate on the box, you can say "it is our
expectation", but cannot
         use MUST.
         - *[Xavi]* can we add this in to the standard?
         - *[Pascal]* we cannot enforce anything related to fabrication, we
         cannot MUST, but we can say "it's our expectation that a
product that does
         not support 10ms clearly indicates so"
      - draft-ietf-6tisch-6top-interface-01 *(Qin)*
         - *[Thomas]* ticket #6 fixed, merged IEEE802.15.4 PIB and
         IEEE802.15.4e PIB

         http://trac.tools.ietf.org/wg/6tisch/trac/ticket/6

         - *[Thomas]* ticket #17 fixed, missing attribute description in
         YANG model

         http://trac.tools.ietf.org/wg/6tisch/trac/ticket/17

         - *[Thomas]* Updated references. Housekeeping
         - *[Pascal]* Please publish the version; Qin can post an update
         later if she has a chance.
      - draft-wang-6tisch-6top-sublayer-01 *(Qin)*
         - *[Thomas]* minor changes, couple of issues solved and
         clarifications. Updated reference. Housekeeping
      - draft-ietf-6tisch-coap *(Raghuram,Pouria)*
         - all tickets addressed. Thomas bumped the version and updated the
         references inside.
      - draft-dujovne-6tisch-on-the-fly-03 *(Diego)*
         - running version on bitbucket

         https://bitbucket.org/6tisch/draft-dujovne-6tisch-on-the-fly/

         - *[Diego]* lot of activity on the draft. many sections changed.
         Nicola on allocation methods/policies from reactive to
proactive extremes.
         - Maria Rita worked on bundle reservation and deletion
         - new section on list of events that trigger the algorithm when
         bandwidth change is needed
         - *[Diego]* worked on CoAP interface. Requests review from
         Raghuram and Pouria.

         Action item: *Pouria* and *Raghuram* to review the running OTF
         draft in bitbucket before publication.

         - *[Maria Rita]* do we all agree on the definition?

         No issues raised on the call. Ask for consensus to the ML.

         - draft-richardson-6tisch-security-architecture *(Michael)*
         - posted a draft on the WirelessHART-like way we discussed. Relies
         on 6top. Assumes details provided by Join Computation Element
(like a PCE
         for the join)
         - Provisioning would establish the keys, complementary work with
         Giuseppe Piro's work.
         - New node is announced in ARO flows
         - could save some time if IPv6 RA piggy backed in 15.4 EB.
         - use of RA in IEEE802.15.4e EB. to be discussed.
      - *[09.00]* Next meetings
      - next week 07-11-2014, same time
   - AOB

   No other business raised.

   - *[09.05]* Meeting ends