Pascal, Thanks for the input. Trying to evaluate the overhead of using the traffic class bits. I assume we want to have one dedicated traffic class for the join request/reply, which tells nodes NOT to take that traffic into account for deciding whether to add cells.
- what must be standardized, if anything? - what would a join request now look like, and what's the hit in terms of byte count? Thomas On Thu, Nov 9, 2017 at 9:31 AM, Pascal Thubert (pthubert) < [email protected]> wrote: > I do > > Digging in the packet even with nice names like DPI is a layer violation. > It breaks the e2e principle so that if we add something to the end points > the join message may become unreadable by the dpi. The art of the IETF > translates upper layer semantics in lower layer abstraction and in this > case we have the TOS bits. RFC 6282 allows to express those in a concise > fashion. 6LoRH does not and if IP in IP is used the TOS bits of the inner > packet must be used.... > > > Regards, > > Pascal > > Le 8 nov. 2017 à 23:42, Thomas Watteyne <[email protected]> a > écrit : > > Thanks Michael. > > Does everyone agree with Michael's comments? > > On Wed, Nov 8, 2017 at 8:12 PM, Michael Richardson <[email protected]> > wrote: > >> >> Thomas Watteyne <[email protected]> wrote: >> > option 1: we don't change the format of the packet, and ask >> forwarding >> > nodes to (deep) inspect the packets, looking for the CoAP >> > Stateless-Proxy option. >> >> It's specific to this join process, and is expensive to do. >> >> > option 2: we change the packet format, and >> > introduce semantics in the traffic class bits in the IPv6 header >> >> It's general to many things. >> >> -- >> Michael Richardson <[email protected]>, Sandelman Software Works >> -= IPv6 IoT consulting =- >> >> >> >> > > > -- > _______________________________________ > > Thomas Watteyne, PhD > Research Scientist & Innovator, Inria > Sr Networking Design Eng, Linear Tech > Founder & co-lead, UC Berkeley OpenWSN > Co-chair, IETF 6TiSCH > > www.thomaswatteyne.com > _______________________________________ > > _______________________________________________ > 6tisch mailing list > [email protected] > https://www.ietf.org/mailman/listinfo/6tisch > > -- _______________________________________ Thomas Watteyne, PhD Research Scientist & Innovator, Inria Sr Networking Design Eng, Linear Tech Founder & co-lead, UC Berkeley OpenWSN Co-chair, IETF 6TiSCH www.thomaswatteyne.com _______________________________________
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