# Minutes, IETF 102 6TiSCH WG Meeting # Note: these minutes are formatted using Markdown. Agenda and Meeting Information ============================== ``` Meeting : IETF 102 Wednesday 18 July 2018 Time : 13:30-15:00 Montreal Time Afternoon session I (90min) Location : Duluth Room, Fairmont The Queen Elizabeth, Montreal Agenda : https://datatracker.ietf.org/meeting/102/materials/agenda-102-6tisch Meeting Slides : https://datatracker.ietf.org/meeting/102/materials.html Etherpad : http://etherpad.tools.ietf.org/p/notes-ietf-102-6tisch?useMonospaceFont=true Meetecho : http://www.meetecho.com/ietf102/6tisch/ Audio stream : http://ietf102streaming.dnsalias.net/ietf/ietf1022.m3u Chairs : Pascal Thubert Thomas Watteyne Responsible AD : Suresh Krishnan WG URLs : http://tools.ietf.org/wg/6tisch/ https://datatracker.ietf.org/wg/6tisch/ https://www.ietf.org/mailman/listinfo/6tisch https://bitbucket.org/6tisch Intro and Status * Note-Well, Blue Sheets, Scribes, Agenda Bashing * Status of the work, link with other WGs * 6TiSCH Interop event 26-27 of June in Paris [10min] (chairs) Chartered items * draft-ietf-6tisch-6top-protocol-12 [5min] 13.40 (Xavi Vilajosana, remote) goal: IESG LC status * draft-chang-6tisch-msf-02 [10min] 13.45 (Tengfei Chang or Simon Duquennoy) goal: prepare for WG adoption * draft-ietf-6tisch-minimal-security-06 [25min] 13.55 (Malisa Vucinic, remote) goal: present changes in -06 and discuss WGLC comments * draft-ietf-6tisch-dtsecurity-zerotouch-join-02 [10min] 14.20 (Michael Richardson) goal: progress status * draft-richardson-6tisch-enrollment-enhanced-beacon-00 [10min] 14.30 (Michael Richardson) goal: call for adoption Unchartered items, time permitting * draft-vilajosana-6tisch-globaltime-01 [5min] 14.40 (Xavi Vilajosana) goal: discuss interaction with minimal security * draft-munoz-6tisch-multiple-phys [5min] 14.45 (Jonathan Munoz) goal: info * retransmission algorithm IEEE 802.15.4-2015 [5min] 14.50 (Yasuyuki Tanaka) goal: information sharing * status of the 6lo fragmentation design team (Thomas) [5min] 14.55 * AOB [QS] 14.00 Total scheduled time 90/90min ``` Volunteers ========== * notetaker 1: Simon Duquennoy * notetaker 2: Yasuyuki Tanaka * Jabber scribe: Rahul Jadhav Action items ============ * **chairs** to open a 1-week WG adoption call for draft-chang-6tisch-msf. * **Malisa Vucinic** to keep the group informed on CoAP proxy resolution meeting/102/materials * **Michael Richardson** to publish new IETF -00 version of draft-ietf-6tisch-dtsecurity-zerotouch-join. * **chairs** to announce adoption of extended beacon draft Summary ======= (This summary is also posted in the INT area wiki, https://trac.ietf.org/trac/int/wiki/IETF102) During IETF102, the 6TiSCH WG had one WG meeting and 2 side meetings The WG meeting covered 7 drafts, one presentation was done without a draft: * `draft-ietf-6tisch-6top-protocol-12` is in IESG LC. The authors produced version -12 to answers all comments. * `draft-chang-6tisch-msf-02` now integrates the mechanisms from `draft-duquennoy-6tisch-asf`. A 1-week WG adoption call was started, finishing on 25 July 2018. The draft's state is now "Candidate for WG Adoption: Proposed Standard" * `draft-ietf-6tisch-minimal-security-06` triggered the most discussion in the session. The draft, for was in WGLC for 2 weeks, triggered 7 reviews. The editor of the draft detailed those and detailed how he would address those. WG state changed to "In WG Last Call" with tag "Revised I-D Needed - Issue raised by WGLC". * `draft-ietf-6tisch-dtsecurity-zerotouch-join` was presented briefly by Pascal Thubert in the absence of the editor. * `draft-richardson-6tisch-enrollment-enhanced-beacon` was presented by Pascal Thubert in the absence of the editor. A 2-week call for adoption was concluded mid-June with no objections. This document is now adopted by the WG. * progress on `draft-vilajosana-6tisch-globaltime` was presented. Some technical discussions. No action from the WG at this point. * new draft `draft-munoz-6tisch-multiple-phys` was presented on generalizing 6TiSCH to multiple PHYs. No action from the WG at this point. * A technical "liaison" presentation to highlight some inconsistencies/remarks in the IEEE802.15.4 standard. Two side meetings took place about the Stateless-Proxy CoAP option `draft-ietf-6tisch-minimal-security-06` proposes. Discussions involved the main contributors as well as CORE and 6TiSCH chairs. An agreement was reaching on how to move forward. Miscellaneous: * Because of a last-minute plane cancellation, Thomas Watteyne co-chair remotely; Pascal Thubert was in the room. Minutes ======= * [13:31] Meeting starts * WG co-chair Thomas Watteyne is remote (plane canceled) * Note-Well, Scribes * Agenda: flexible time for Malisa * Status of the work, link with other WGs * 6TiSCH is closely linked to 6lo, ROLL, CoRE * OpenWSN release 1.14.0 (http://openwsn.org) * F-Interop 6TiSCH Test Suite release 1.0.0 (http://f-interop.eu/) * 2nd F-Interop 6TiSCH Interop Event (June, Paris) * [13:40] draft-ietf-6tisch-6top-protocol-12 (Xavi Vilajosana) * goal: status update, check if the draft should move on * [**Pascal**] it is now in the hands of IESG * no particular action asked to WG * [13:42] draft-chang-6tisch-msf-02 (Simon Duquennoy) * ASF is merged into MSF (draft-02) * Three types of cells: the minimal cell, autonomous cells, "dedicated" cells * Autonomous cells are allocated based on EUI64 address * Boot sequence is changed (See Section 4) * "Pending bit" is used to handle traffic bursts * [**Pascal**] if no ACK is received? * [**Simon**] the stream ends * [**Thomas**] now, it's ready for the adoption process? * [**Pascal**] after one week window to discuss, start the process (on ML) > Action item: **chairs** to open a 1-week WG adoption call for draft-chang-6tisch-msf. * [13:53] draft-ietf-6tisch-minimal-security-06 (Malisa Vucinic) * implemented in OpenWSN, which works with an implementation based on Contiki OS at the Interop event * 7 reviews were received from WGLC * the global time draft by Xavi extends a format defined in the minimal security * CBOR structures were optimized for overhead * [**Tero**] do we want to support other modes of keying? * [**Malisa**] initial intention: map the structure on what 15.4 defines * [**Malisa**] we can add a new struct to accommodate for special cases, but let's keep the current struct as is, as they optimize for the most common case * (will continue this discussion on ML) * Added support for 6LBR pledge * Rekeying in order to update keying params at runtime * [**Thomas**] in IETF 101 we decided to explore the option of using FETCH. Outcome? * [**Malisa**] correct, but there were issues, proposed solution now is to expose /j * Working Group Last Call review * [WGLC comments 1/10] * Working with CoRE WG to explore the best solution for Stateless-Proxy * [WGLC comments 2/10] * [**Tero**] JP might want to have a blacklist to prevent unwanted traffic from unauthorized/joining nodes * [**Pascal**] It could be done internally * [**Malisa**] decision whether to blacklist or not should be done centrally, i.e., at JRC not JP * [**Thomas**] is this mechanism or policy? * [**Thomas**] extensions proposed by Malisa really are extensions. The draft can move forward without them. * [WGLC comments 7/10] * Nonce re-use issue. Will resolve on ML * Jim: came up with an idea; will share it on ML * [WGLC comments 8/10] * It's about a very specific use-case * we don't need to take this into account with this draft * [14:39] draft-ietf-6tisch-dtsecurity-zerotouch-join-02 (Pascal Thubert, on behalf of Michael Richardson) * explains the current status briefly * [14:41] draft-richardson-6tisch-enrollment-enhanced-beacon-00 (Pascal Thubert, on behalf of Michael Richardson) * call for adoption was mid-June, no objection * draft it is adopted now > Action item: **Michael Richardson** to publish new IETF -00 version of draft-ietf-6tisch-dtsecurity-zerotouch-join. * [14:43] draft-vilajosana-6tisch-globaltime-01 (Xavi Vilajosana) * [**Pascal**] is there any dependency on -minimal? * [**Xavi**] there is * Will discuss how JRC can map ASN and the global time in a future 6TiSCH meeting * [14:47] draft-munoz-6tisch-multiple-phys (Jonathan Munoz) * problem statement draft: how should a mote handle multiple PHYs? * notion of neighbor changes depending on PHY * timeslot duration varies depending on PHY * also channels, datarates etc. vary * [14:54] retransmission algorithm IEEE 802.15.4-2015 (Yasuyuki Tanaka) * report on ML discussion on IEEE 802.15.4 retransmission algo * 802.15.4md group is currently revising 802.15.4 * [**Tero**] plan for IEEE is to have this out by 2020 * [**Thomas**] process to get comments in? * [**Tero**] maybe some formal process, not sure. In any case, send comments in to me, will put them in. * [14:58] status of the 6lo fragmentation design team (Thomas) * no time * [14:59] Any other business? * no other business raised * [14:59] Meeting ends