Hi Pascal, Is fragmentation an issue in lpwan also? If yes, maybe a joint DT can be formed.
Another question: I think we are talking about 802.15.4 maximum frame size of 127 limitation here, is that right? Regards, Behcet On Wed, Jul 19, 2017 at 8:53 AM, Carsten Bormann <[email protected]> wrote: > We need to do at least the first two of three things: > > (1) Write up how fragment forwarding works today (those implementation > techniques are currently not documented in a way that is very accessible to > new implementers). > > (2) Look at the timing considerations governing burst packet transmission > to a forwarder and paced fragment forwarding. Can we derive guidelines for > implementers or even standardize something (BCP or PS level)? This > requires finding (and possibly conducting) pertinent research. > > (3) Look at the use cases that would benefit from multi-hop fragment > retransmission (we have fragment retransmission today, but only single-hop, > and only for unicast). If we find any such use cases, document their > characteristics, and try to find solutions that have ways to resolve > interactions with (2) and with transport-layer retransmission timers. This > requires way more research. > > We also could look at better supporting ECN and other issues that come up > in tunneling-like environments. > > Grüße, Carsten > > > > On Jul 18, 2017, at 18:34, Samita Chakrabarti <[email protected]> > wrote: > > > > Dear all: > > > > At IETF99 6lo wg meeting 6lo-chairs discussed a few questions in order > to sense WG interests for further work on fragmentation - especially for > route-over topology. > > The details charter for the design team will be finalized soon. > > However, the 6lo-chairs are collecting names for the interested > individuals for the design team. We might need 4-5 person design team and > prior experience on packet forwarding is helpful. > > > > We are requesting the following : > > * Send your ideas to the list on what you want to see resolved by the > fragmentation design team > > > > * If you have any prior experience on 6lowpan fragmentation work on > router-over or mesh-under please send information about it > > > > Thanks, > > Gabriel & Samita > > > > Reference slides from today's session: > > > > https://www.ietf.org/proceedings/99/slides/slides-99-6lo-wg-discussion- > questions-on-6lo-fragmentation-work-and-scoping-01.pdf > > > > https://www.ietf.org/proceedings/99/slides/slides- > 99-6lo-6lowpan-fragment-forwarding-in-route-over-multi-hop-topology-00.pdf > > > > > > > > > > _______________________________________________ > > 6lo mailing list > > [email protected] > > https://www.ietf.org/mailman/listinfo/6lo > > _______________________________________________ > 6lo mailing list > [email protected] > https://www.ietf.org/mailman/listinfo/6lo >
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