> On May 12, 2015, at 11:00 AM 5/12/15, Martine Lenders > <authmille...@gmail.com> wrote: > > Hi, > > Am 12.05.2015 08:08 schrieb "Oleg Hahm" <oliver.h...@inria.fr>: > > > > Hi Daniel! > > > > > >Is this not a requirement of the routing? > > > Did you have a look at the IEEE 802.15.4 specification? It's assumed to > > > have > > > a so called PAN coordinator that forces the network to a star topology. > > > It's > > > extendable to a tree of stars, but still you need a PAN coordinator in > > > every > > > region. This node is the mentioned single point of failure and > > > additionally > > > has increased energy consumption. > > > > > > This is exactly what I don't want. > > > > PAN coordinators are only required for the beacon enabled mode in IEEE > > 802.15.4. 6LoWPAN, for instance, does not require this mode (I'm not even > > sure > > if it is supported by the spec) and thus, there is no need for a PAN > > coordinator or star topology. > > I'm not 100% sure, since I'm not THAT knowledgeable in terms of IEEE > 802.15.4, but isn't that what 6LoWPAN's mesh-under mode [1] is for? All we > need to do to support this mode is to implement support for 6LoWPAN's Mesh > [2] and Broadcast [3] headers.
6LoWPAN can be used in a "route-over" mesh using just IP, as well, for example using RPL as a routing protocol. This mode is of operation is incorporated into the ZigBee-IP specification [1]. - Ralph [1] http://www.zigbee.org/zigbee-for-developers/network-specifications/zigbeeip/#learnmore; the ZigBee-IP specification document is available for free but requires registration. > > Cheers, > Martine > > [1] https://tools.ietf.org/html/rfc4944#section-11 > [2] https://tools.ietf.org/html/rfc4944#section-5.2 > [3] https://tools.ietf.org/html/rfc4944#section-11.1 > _______________________________________________ > devel mailing list > devel@riot-os.org > https://lists.riot-os.org/mailman/listinfo/devel _______________________________________________ devel mailing list devel@riot-os.org https://lists.riot-os.org/mailman/listinfo/devel
