LWIG WG Meeting IETF 102 - Montreal Fairmont The Queen Elizabeth Location: Duluth Date: Friday, July 20, 2018, 11:50 - 13:20 Chairs: Zhen Cao, Mohit Sethi AD: Suresh Krishnan Presentation materials: https://datatracker.ietf.org/meeting/102/session/lwig =============================================================================== Meetecho for remote participants: http://www.meetecho.com/ietf102/lwig/ Etherpad for notes: http://etherpad.tools.ietf.org/p/notes-ietf-102-lwig?useMonospaceFont=true 1. Administrative and Agenda Bashing (Chairs, 10 min) Note Well, Note Takers, Jabber Scribes, Agenda Bashing Minute takers: Francesca Jabber Scribe: Rahul Mohit announces 2 RFC being published (8387, 8352) Slight change to agenda,: 4 won't be presented 2. Rahul: Neighbor Management Policy for 6LoWPAN (10 min) https://tools.ietf.org/html/draft-ietf-lwig-nbr-mgmt-policy Rahul presenting the slides Mohit (no hat): think this is a very useful doc. Please note this is an informational. Rahul : section in the draft "if you want to do neighbor mgt, these are the things you will need" 3. Carlos: TCP Usage Guidance in the Internet of Things (IoT) (10 min) https://tools.ietf.org/html/draft-ietf-lwig-tcp-constrained-node-networks Presenting the status and updates to the draft Rahul: I think the information on socket interface in OpenWSN in red is incorrect; BSD-style socket interface is not possible Carlos: Ok, we will check Markku: Thank you for doing this, useful work. Needs to be more specific regarding turning off Delay ACKs (global, per interface, ...). Another example is ECN, the current description of the RTO behavior is not correct. Will do a full review Carlos: Thanks. About the delay technology, we already have some text Markku: still need to be more specific Mohit (no hat): Could you post this draft ? Carlos: yes Zhen: could be good to have the discussion in lwig and tcp wg Carlos: I think we had the discussion and we would have the last call in both working groups Rahul: Is any of these stacks already supporting ECN? Carlos: No, not yet. 4. Carsten: Virtual reassembly buffers in 6LoWPAN (10 min) https://tools.ietf.org/html/draft-ietf-lwig-6lowpan-virtual-reassembly not presented 5. Olaf: CoAP Implementation Guidance (10 min) https://tools.ietf.org/html/draft-ietf-lwig-coap-06 Olaf (remote) presenting the update to the draft Carsten: as a co-author question for the wg, do people perceive a rush to get this published? In CoRE we had a doc like this who waited 5 years to get published. Same here or not? Matthias: also as co-author, no reviews coming in. before wglc I feel like reviews don't happen Mohit (no hat): good idea but need an editor to make sure that someone brings in all the comments Carsten: maybe Matthias is right Zhen: lack of review is ?? . (missed it) Matthias: plugtest: we got something from F-interop. some issues that makes sense to document, others maybe not Hannes: chairs maybe should organize interop on features including CoAP over TCP, which could be fed into this doc. Comments we see is clarifications people want Mohit: we can talk to CoRE chair and organise something Carsten: we should talk to F-Interop Hannes: I think F-Interop have a different goal, come up with an automated test.we don't need that in the first place Mohit: some interop is better than not any. Carsten: need to do more of those. Nice thing of interop is people are sitting together and talk to each other. Maybe organizing something in Prague time frame would be good Mohit: sounds good 6. Carsten/Ari: Terminology for Constrained-Node Networks (10 min) https://tools.ietf.org/html/draft-bormann-lwig-7228bis-03 Carsten presenting the slides Hannes: (J-group classes slides) (...) Virtualization imo it provides another layer of protection. enhance security capabilities. Carsten: would like to get feedback from the wg Hannes: are you planning to talk about requirements (devices)? won't need to be super accurate, but give a rough idea Carsten: good idea start collecting expected burdens for classes, that would fit very well with this document 7. Daniel: Minimal ESP (10 min) https://tools.ietf.org/html/draft-mglt-lwig-minimal-esp-06 Daniel presenting the slides How many people have read this doc? ~10 in favor of adopting: some hum against: no hum Rene: did you fix the algorithm option? Daniel: no, we described how to select an algorithm 8. Rene: Alternative Curve Representations (10 min) https://tools.ietf.org/html/draft-struik-lwig-curve-representations-00 Rene presenting the slides Carsten: question to your last question: yes. It is really hard to do crypto on small devices. Sean Turner: section 5 is the most interesting section. CURDLE is looking at curves and deprecating and having new things. Think about that. Second point: this is mostly about the identifiers, the chip already has the code. Rene: as an implementer you could take a curve and do a very simple conversion Sean: trying to understand the driving motivation for this Rene: if you have a small device and you implement ECDSA and Ed-25519 (...) in 6lo they have may options to do things and not all devices speak all languages Carsten: real example one P-256 and Ed25519, you have to have both Anybody objecting to this becoming a wg doc? Daniel: as co-chair of CURDLE, I am fine if you ask for review in Curdle, you would do that very fast, since the wg is not very active Rene: what is the output of Curdle? Daniel: deprecating and providing points for new alg. But this would be just for the review. Hum for adoption: hum for adoption, no hum for no adoption 9. Francesca: Comparison of CoAP Security Protocols (10 min) https://tools.ietf.org/html/draft-ietf-lwig-security-protocol-comparison-01