Hi Carles, You have made some good points on 6lo and LPWAN.
However, as of today, the focus of this use-case document on the usecases that are running IPv6/6lowpan stack today or potentially can run on to others. For example, 6lowpan stack with modifications can run on 802.11 networks in the future or in LPWAN. Now with ethertype IDs etc. the potential is higher. The idea of the usecase document is to give examples of existing 6lo implementations/drafts/RFC and deployments. And at the same time provide a few examples on other technologies (ex. LPWAN or some other ) which might be applicable for running the basics of the stack or at least evaluate running 6lo stack. The scope of 6lo is about running IPv6 on constrained node devices -- started with WPAN, but could be applicable to WLAN or WAN. Thus it is fine to work on the usecases here and then apply to specific SDOs. [ This is my personal view] Thanks, -Samita -----Original Message----- From: 6lo [mailto:[email protected]] On Behalf Of Carles Gomez Montenegro Sent: Tuesday, April 12, 2016 2:17 AM To: Yong-Geun Hong Cc: [email protected]; [email protected]; [email protected]; "Sandra Céspedes U." Subject: Re: [6lo] 6lo use cases: draft-hong-6lo-use-cases-01 Hi Yong-Geun, Sandra, Please see some inline comments, below. > Dear Sandra. > > Thanks for your comments. > > I agree your comments. At the LP-WAN BoF, I was also there. > > In the 6lo use cases document, we tried to describe the use cases that > are related to IPv6 over Networks of Resource-constrained Nodes. I am > not sure how the current LP-WAN technologies are related to IPv6 and > 6lo technologies. An analysis of IPv6 over LPWAN can be found here: https://tools.ietf.org/html/draft-gomez-lpwan-ipv6-analysis-00 (This draft will be updated before Berlin...) There is also a section on the topic here: https://tools.ietf.org/html/draft-minaburo-lp-wan-gap-analysis-01 Sandra's comment touches an important point, that is: which is (or should be) the scope of the "6lo use cases" draft? The "6lo use cases" document may include a wider set of technologies than the current "6lo" ones. Then it would transform into a "6lo" and "lpwan" use cases document. I wonder if this document (currently homed in the 6lo WG) would then potentially focus on work carried out in more than one WG. I personally would have no problem with that, but coordination between the involved WGs would be needed, and it would be good to know the chairs' opinion on this. (Note that an IETF WG focusing on LPWAN does not yet exist, but efforts to create such a WG have already started.) On the other hand, for the most challenged LPWAN setups/technologies, functionality beyond what is currently used in 6lo is actually needed to support IPv6 over LPWAN [draft-gomez-lpwan-ipv6-analysis]. In fact, many LPWANs fall in the challenged networks category [draft-minaburo-lp-wan-gap-analysis]. As of today, the mechanisms for supporting IPv6 over LPWANs are in their early stages in the best case... So today it is already possible to include some example LPWAN technologies and use cases in the document, but we'll have to wait a little bit to see how IPv6 is supported over them. What does the WG think? Thanks! Carles > In the next revision, we will look at the LP-WAN technologies more > detail and try to include the LP-WAN technologies. > > If you have related contents, it is appreciate to help. > > Best regards. > > Yong-Geun. > > > On Tue, Apr 12, 2016 at 6:31 AM, Sandra Céspedes U. > <[email protected] >> wrote: > >> Dear Yong-Geun >> >> I have a comment regarding this draft: >> >> It seems to me that all the use cases presented in the document are >> for "short-range" technologies, that would easily follow in the PAN >> category. >> Although most of the current work done in 6lo concentrates in such >> technologies, there is no limitation in the scope that indicates that >> low-power wide area technologies cannot be considered. I'm referring >> to technologies that were discussed during the LP-WAN BOF (they even >> have a shared file with an initial list of technologies in >> goo.gl/S3uSPU >> <https://docs.google.com/document/d/1n7cXN4_VuI8imy8MG3-fHjl9FNiNvYfdB4txN4hDQ-w/edit#heading=h.g3u16990965f>). >> >> >> Why aren't we looking into those technologies as 6lo use-cases? I >> suggest that if not all the technologies, some examples should relate >> to LP-WAN technologies, since they are also restricted networks (some >> argue that even more constrained than Low-PAN technologies) and also >> need IPv6-over-foo definitions. >> >> Looking forward to your opinion. >> >> Regards, >> Sandra Céspedes >> >> >> On 07-04-2016 22:14, Yong-Geun Hong wrote: >> >> Dear Michael. >> >> Thanks for your valuable comments. >> >> I totally agree your comments and it is aligned with other comments >> in the 6lo WG meeting today. >> >> I will keep in mind your comments and try to revise the document as >> you pointed. >> >> Best regards. >> >> Yong-Geun. >> >> >> On Fri, Apr 8, 2016 at 7:20 AM, Michael Richardson < >> <[email protected]>[email protected]> wrote: >> >>> >>> I scanned the document quickly during the presentation today. >>> >>> It seems like it might be a useful document to have; I'm thinking >>> that 6lowpan maybe already did such a thing? If so, it's old. >>> >>> If the purpose is to market/educate outsiders then I see the point, >>> and let's do that. We regularily don't explain ourselves well >>> enough. This document should be augmented with a set of slides that >>> explain (in pictures) the deployment scenarios indicated. I would >>> find that useful when I explain things to outsiders if I can find >>> pictures and diagrams for technologies which I'm not otherwise >>> intimate with. >>> >>> (If it's just for us, then I don't think it's useful as is) >>> >>> >>> -- >>> Michael Richardson <[email protected]>, Sandelman Software Works >>> -= IPv6 IoT consulting =- >>> >>> >>> >>> >>> _______________________________________________ >>> 6lo mailing list >>> [email protected] >>> https://www.ietf.org/mailman/listinfo/6lo >>> >>> >> >> >> _______________________________________________ >> 6lo mailing [email protected]https://www.ietf.org/mailman/listinfo/6lo >> >> >> >> -- >> >> Sandra L. Céspedes, Ph.D. | Profesora Asistente Departamento de >> IngenierÃa Eléctrica Universidad de Chile Av. Tupper 2007, >> Santiago, Chile. 8370451 Tel. +56 (2) 29784093 | Of. 504 >> URL: http://www.cec.uchile.cl/~scespedes >> >> >> >> <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm >> _campaign=sig-email&utm_content=emailclient> >> Virus-free. >> www.avast.com >> <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm >> _campaign=sig-email&utm_content=emailclient> >> >> _______________________________________________ >> 6lo mailing list >> [email protected] >> https://www.ietf.org/mailman/listinfo/6lo >> >> > _______________________________________________ > 6lo mailing list > [email protected] > https://www.ietf.org/mailman/listinfo/6lo > _______________________________________________ 6lo mailing list [email protected] https://www.ietf.org/mailman/listinfo/6lo _______________________________________________ 6lo mailing list [email protected] https://www.ietf.org/mailman/listinfo/6lo
