Re: [Roll] [6tisch] Support of flow label to carry the RPL information in data packets
Xavier Vilajosana <xvilajosana@eecs.berkeley.edu> Thu, 17 April 2014 07:59 UTC
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Date: Thu, 17 Apr 2014 09:59:34 +0200
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From: Xavier Vilajosana <xvilajosana@eecs.berkeley.edu>
To: Ines Robles <mariainesrobles@googlemail.com>
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Cc: roll <roll@ietf.org>, "6tisch@ietf.org" <6tisch@ietf.org>
Subject: Re: [Roll] [6tisch] Support of flow label to carry the RPL information in data packets
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+1 I think this is more than needed. In addition RFC 6282 defines how header compression needs to be handled together with extension headers. I think this is not clear and leads to confusions (afecting already some wireshark dissectors). The use of flow label will solve several problems at once. X. 2014-04-16 22:44 GMT+02:00 Ines Robles <mariainesrobles@googlemail.com>: > +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 >> >> > > _______________________________________________ > 6tisch mailing list > 6tisch@ietf.org > https://www.ietf.org/mailman/listinfo/6tisch > >
- [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