Re: [Roll] [6tisch] Support of flow label to carry the RPL information in data packets
Ines Robles <mariainesrobles@googlemail.com> Wed, 16 April 2014 20:44 UTC
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Date: Wed, 16 Apr 2014 17:44:06 -0300
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From: Ines Robles <mariainesrobles@googlemail.com>
To: "Pascal Thubert (pthubert)" <pthubert@cisco.com>
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Cc: "6tisch@ietf.org" <6tisch@ietf.org>, roll <roll@ietf.org>
Subject: Re: [Roll] [6tisch] Support of flow label to carry the RPL information in data packets
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+1 Ines 2014-04-15 21:19 GMT-03:00 Qin Wang <qinwang6top@yahoo.com>: > +1 > > Qin > On Wednesday, April 16, 2014 1:47 AM, Prof. Diego Dujovne < > diego.dujovne@mail.udp.cl> wrote: > +1 ! > > > 2014-04-15 12:25 GMT-03:00 Tom Phinney <tom.phinney@cox.net>: > > +1 for sure. The flow label has always been the preferable method for me, > and I suspect for others with knowledge of how it is used in ISA100.11a. > === > > On 2014.04.15 07:25, Pascal Thubert (pthubert) wrote: > > Dear all: > > As some of you remember, the RPL specification has changed over time WRT > to the location of the information that RPL places in the data packets. We > started with the flow label but these were the days when what became RFC > 6437 was being defined at 6MAN, so we shied away and defined the HbH > technique that is now specified as RFC 6553. > > We’ll note that the RPL option defined in RFC 6553 takes 6 octets, and > with the HbH hdr we end up with 8 extra octets. An extra IP-in-IP > encapsulation is required on top of that unless both endpoints are in the > same RPL domain. All this overhead may be acceptable when power is > available and the PHY allows for larger frames, but in traditional > battery-operated 15.4 with ~ 80 bytes usable per frame, my experience from > integrating 6LoWPAN HC with ISA100.11a says that all these extra bytes will > be on the way of the 6TiSCH adoption. > > Still, both RFC 6550 and RFC 6552 are designed to allow for an alternate > technique and in particular for the use of the flow label, as is elaborated > in http://tools.ietf.org/html/draft-thubert-roll-flow-label-02 . Using > the flow label reduces the cost of the RPL information dramatically, down > to a level that is probably acceptable for the target SDOs. > > So my plan for now is to move the flow label draft to 6MAN and prepare for > a hot season, and I’m looking for support from both 6TiSCH and ROLL to back > me up from the start. Yes, you can help! > > Please +1 if you agree we need this work to happen, and/or provide any > suggestion. > > Cheers, > > Pascal > > > _______________________________________________ > 6tisch mailing list6tisch@ietf.orghttps://www.ietf.org/mailman/listinfo/6tisch > > > > _______________________________________________ > 6tisch mailing list > 6tisch@ietf.org > https://www.ietf.org/mailman/listinfo/6tisch > > > > > -- > DIEGO DUJOVNE > Académico Escuela de Ingeniería en Informática y Telecomunicaciones > Facultad de Ingeniería UDP > www.ingenieria.udp.cl > (56 2) 676 8125 > > _______________________________________________ > 6tisch mailing list > 6tisch@ietf.org > https://www.ietf.org/mailman/listinfo/6tisch > > > > _______________________________________________ > Roll mailing list > Roll@ietf.org > https://www.ietf.org/mailman/listinfo/roll > >
- [Roll] Support of flow label to carry the RPL inf… Pascal Thubert (pthubert)
- Re: [Roll] [6tisch] Support of flow label to carr… Michael Richardson
- Re: [Roll] [6tisch] Support of flow label to carr… Tom Phinney
- Re: [Roll] [6tisch] Support of flow label to carr… Prof. Diego Dujovne
- Re: [Roll] [6tisch] Support of flow label to carr… Qin Wang
- Re: [Roll] [6tisch] Support of flow label to carr… Ines Robles
- Re: [Roll] [6tisch] Support of flow label to carr… Xavier Vilajosana
- [Roll] [6tisch] Support of flow label to carry th… Pascal Thubert (pthubert)
- Re: [Roll] [6tisch] Support of flow label to carr… Fernando Gont
- Re: [Roll] [6tisch] Support of flow label to carr… Pascal Thubert (pthubert)
- Re: [Roll] [6tisch] Support of flow label to carr… Brian E Carpenter
- Re: [Roll] [6tisch] Support of flow label to carr… Fernando Gont
- Re: [Roll] Support of flow label to carry the RPL… Yvonne-Anne Pignolet
- Re: [Roll] [6tisch] Support of flow label to carr… Brian E Carpenter
- Re: [Roll] [6tisch] Support of flow label to carr… Pat Kinney
- Re: [Roll] [6tisch] Support of flow label to carr… Pascal Thubert (pthubert)
- Re: [Roll] [6tisch] Support of flow label to carr… Brian E Carpenter
- Re: [Roll] [6tisch] Support of flow label to carr… Pascal Thubert (pthubert)
- Re: [Roll] [6tisch] Support of flow label to carr… Brian E Carpenter