Re: [Roll] Loop free local DODAG repair solution
Jianlin Guo <guo@merl.com> Fri, 26 October 2012 15:36 UTC
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Date: Fri, 26 Oct 2012 11:36:45 -0400
From: Jianlin Guo <guo@merl.com>
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To: C Chauvenet <c.chauvenet@watteco.com>
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Cc: "<roll@ietf.org>" <roll@ietf.org>
Subject: Re: [Roll] Loop free local DODAG repair solution
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We compared performance metrics such as packet delivery rate. On 10/26/2012 11:21 AM, C Chauvenet wrote: > Hi, > Thank you for your answer. > See inline. > > Le 26 oct. 2012 à 15:27, Jianlin Guo a écrit : > >> On 10/25/2012 12:06 PM, C Chauvenet wrote: >>> Hi, >>> >>> Le 25 oct. 2012 à 16:01, Jianlin Guo a écrit : >>> >>>> Hi Michael, >>>> >>>> For your first question, draft-clausen-lln-rpl-experiences-04 >>>> pointed out that "it can be observed that with current >>>> implementations of RPL, such as the ContikiRPL implementation, >>>> loops do occur - and, frequently. During the same experiments >>>> described in Section 13, a snapshot of the DODAG was made every ten >>>> seconds. In 74.14% of the 4114 snapshots, at least one loop was >>>> observed". >>> >>> Is it something that you observed in your own deployments ? >>> More specifically : did you find similar results ? >> We observed the occurrence of loops, unfortunately we did not measure >> the percentage. > > So how did you evaluate the benefit of the mechanism that you proposed ? > > Cédric. > >> >>> Best, >>> >>> Cédric. >>> >>>> >>>> For your second question, further investigation and experiments are >>>> needed. >>>> >>>> Jianlin >>>> >>>> On 10/25/2012 8:08 AM, Michael Richardson wrote: >>>>> Jianlin Guo<guo@merl.com> wrote: >>>>> JG> Dear ROLL WG members, >>>>> >>>>> JG> As we all know that loop is an open issue in RPL. Experiment shows that loop >>>>> JG> occurs quite often. We have proposed a loop free local DODAG >>>>> >>>>> Can you quantify "quite often"? >>>>> Do you have any metrics for how often loops occur, and what the cost is >>>>> of their repair? >>>>> >>>>> I think that the WG would be very very very interested in additional -experiences >>>>> draft, or pointers to papers explaining same, that gives a repeateable >>>>> experiment in which loops are observed. >>>>> >>>> >>>> _______________________________________________ >>>> Roll mailing list >>>> Roll@ietf.org <mailto:Roll@ietf.org> >>>> https://www.ietf.org/mailman/listinfo/roll >>> >> >
- [Roll] Loop Free DODAG Repair Solution Jianlin Guo
- Re: [Roll] Loop Free DODAG Repair Solution Michael Richardson
- Re: [Roll] Loop Free DODAG Repair Solution Jianlin Guo
- [Roll] Loop free local DODAG repair solution Jianlin Guo
- Re: [Roll] Loop free local DODAG repair solution Philip Levis
- Re: [Roll] Loop free local DODAG repair solution Jianlin Guo
- Re: [Roll] Loop free local DODAG repair solution Jianlin Guo
- Re: [Roll] Loop free local DODAG repair solution Philip Levis
- Re: [Roll] Loop free local DODAG repair solution Philip Levis
- Re: [Roll] Loop free local DODAG repair solution Jianlin Guo
- Re: [Roll] Loop free local DODAG repair solution Michael Richardson
- Re: [Roll] Loop free local DODAG repair solution Jianlin Guo
- Re: [Roll] Loop free local DODAG repair solution C Chauvenet
- Re: [Roll] Loop free local DODAG repair solution Jianlin Guo
- Re: [Roll] Loop free local DODAG repair solution C Chauvenet
- Re: [Roll] Loop free local DODAG repair solution Jianlin Guo
- Re: [Roll] Loop free local DODAG repair solution C Chauvenet
- Re: [Roll] Loop free local DODAG repair solution Jianlin Guo
- Re: [Roll] Loop free local DODAG repair solution Philip Levis
- Re: [Roll] Loop free local DODAG repair solution Jianlin Guo
- Re: [Roll] Loop free local DODAG repair solution Philip Levis
- Re: [Roll] Loop free local DODAG repair solution Jianlin Guo