[lp-wan] draft-ietf-lpwan-coap-static-context-hc-14.txt and Magnus Westerlund Discuss
Magnus Westerlund <magnus.westerlund@ericsson.com> Thu, 28 May 2020 15:32 UTC
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From: Magnus Westerlund <magnus.westerlund@ericsson.com>
To: "pthubert@cisco.com" <pthubert@cisco.com>, "draft-ietf-lpwan-coap-static-context-hc@ietf.org" <draft-ietf-lpwan-coap-static-context-hc@ietf.org>, "evyncke@cisco.com" <evyncke@cisco.com>, "lp-wan@ietf.org" <lp-wan@ietf.org>
Thread-Topic: draft-ietf-lpwan-coap-static-context-hc-14.txt and Magnus Westerlund Discuss
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Date: Thu, 28 May 2020 15:32:37 +0000
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Subject: [lp-wan] draft-ietf-lpwan-coap-static-context-hc-14.txt and Magnus Westerlund Discuss
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Hi, I have looked at the changes in the latest version. However, I don't think they resolve my discuss ( https://datatracker.ietf.org/doc/draft-ietf-lpwan-coap-static-context-hc/ballot/#magnus-westerlund ). Let me try to re-iterate on why I think my discuss is relevant and you should do something credible to address it. So my discuss are really only focused on the case where SCHC is used on top of a security layer that pushes the SCHC implementation into the COAP stacks at the end-points, rather than potentially lower layers on top of the L2 infrastructure. To me it appears that this change results in several architectural considerations that didn't existed before for the entity that are going to determine the SCHC capability in the peer as well as the context establishment. What I am asking for is really only an description of the changed architectural context and the requirements on a solution for the SCHC context establishment mechanism. - Discover the peers capability to perform SCHC for COAP or can one opportunisticly try? - Taking into account that an COAP application can potentially talk to a number of peers, each having different capabilities. - Are there need for a redirection/invocation mechanism - The actual context exchange mechanism. Can we please write a paragraph or two in the suitable section in this document rather a single sentence pointing to an appendix. That appending containing a single bullet that are supposed to be added: This section extends the RFC8724 Annex D list. o How to establish the End-to-End context initialization using SCHC for CoAP header only. Annex D of RFC 8724 list is preface by: "This section lists the information that needs to be provided in the LPWAN technology-specific documents." That is not really information to be provided, there are procedures that are needed. Cheers Magnus Westerlund ---------------------------------------------------------------------- Networks, Ericsson Research ---------------------------------------------------------------------- Ericsson AB | Phone +46 10 7148287 Torshamnsgatan 23 | Mobile +46 73 0949079 SE-164 80 Stockholm, Sweden | mailto: magnus.westerlund@ericsson.com ----------------------------------------------------------------------
- [lp-wan] draft-ietf-lpwan-coap-static-context-hc-… Magnus Westerlund
- Re: [lp-wan] draft-ietf-lpwan-coap-static-context… Pascal Thubert (pthubert)
- Re: [lp-wan] draft-ietf-lpwan-coap-static-context… Magnus Westerlund
- Re: [lp-wan] draft-ietf-lpwan-coap-static-context… Ricardo Andreasen
- Re: [lp-wan] draft-ietf-lpwan-coap-static-context… Ana Minaburo
- Re: [lp-wan] draft-ietf-lpwan-coap-static-context… Magnus Westerlund
- Re: [lp-wan] draft-ietf-lpwan-coap-static-context… Eric Vyncke (evyncke)