DIS Modifications
draft-ietf-roll-dis-modifications-00

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Last updated 2017-03-13
Replaces draft-gundogan-roll-dis-modifications
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Internet Engineering Task Force                         C. Gundogan, Ed.
Internet-Draft                                               HAW Hamburg
Intended status: Standards Track                              D. Barthel
Expires: September 14, 2017                                       Orange
                                                             E. Baccelli
                                                                   INRIA
                                                          March 13, 2017

                           DIS Modifications
                  draft-ietf-roll-dis-modifications-00

Abstract

   This document augments [RFC6550] with DIS flags and options that
   allow a RPL node to better control how neighbor RPL routers respond
   to its solicitation for DIOs.

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   Copyright (c) 2017 IETF Trust and the persons identified as the
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Gundogan, et al.       Expires September 14, 2017               [Page 1]
Internet-Draft    draft-ietf-roll-dis-modifications-00        March 2017

   the Trust Legal Provisions and are provided without warranty as
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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
     1.1.  RFC6550 refresher . . . . . . . . . . . . . . . . . . . .   2
     1.2.  Undesirable effects . . . . . . . . . . . . . . . . . . .   3
     1.3.  Desired improvments . . . . . . . . . . . . . . . . . . .   4
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   5
   3.  DIS Base Object flags . . . . . . . . . . . . . . . . . . . .   5
   4.  DIS Options . . . . . . . . . . . . . . . . . . . . . . . . .   6
     4.1.  Metric Container  . . . . . . . . . . . . . . . . . . . .   6
     4.2.  Response Spreading  . . . . . . . . . . . . . . . . . . .   6
     4.3.  DIO Option Request  . . . . . . . . . . . . . . . . . . .   7
   5.  Full behavior illustration  . . . . . . . . . . . . . . . . .   8
   6.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   9
     6.1.  DIS Flags . . . . . . . . . . . . . . . . . . . . . . . .   9
     6.2.  RPL Control Message Options . . . . . . . . . . . . . . .  10
   7.  Security Considerations . . . . . . . . . . . . . . . . . . .  10
   8.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .  10
   9.  References  . . . . . . . . . . . . . . . . . . . . . . . . .  10
     9.1.  Normative References  . . . . . . . . . . . . . . . . . .  10
     9.2.  Informative References  . . . . . . . . . . . . . . . . .  11
   Appendix A.  Applications . . . . . . . . . . . . . . . . . . . .  11
     A.1.  A Leaf Node Joining a DAG . . . . . . . . . . . . . . . .  11
     A.2.  Identifying A Defunct DAG . . . . . . . . . . . . . . . .  12
     A.3.  Explicit and Implicit DIO Option Requests . . . . . . . .  14
   Appendix B.  Experimental data  . . . . . . . . . . . . . . . . .  15
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  15

1.  Introduction

   This document augments [RFC6550], the RPL routing protocol
   specification.

1.1.  RFC6550 refresher

   Per [RFC6550], a RPL node can send a DODAG Information Solicitation
   (DIS) message to solicit DODAG Information Object (DIO) messages from
   neighbor RPL routers.

   A DIS can be multicast to all the routers in range or it can be
   unicast to a specific neighbor router.

   A DIS may carry a Solicited Information option that specifies the
   predicates of the DAG(s) the soliciting node is interested in.  In
   the absence of such Solicited Information option, the soliciting node
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