Root initiated routing state in RPL
draft-ietf-roll-dao-projection-05

Document Type Active Internet-Draft (roll WG)
Last updated 2018-12-21
Replaces draft-thubert-roll-dao-projection
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ROLL                                                     P. Thubert, Ed.
Internet-Draft                                             Cisco Systems
Intended status: Standards Track                               R. Jadhav
Expires: June 24, 2019                                       Huawei Tech
                                                             M. Gillmore
                                                                   Itron
                                                            J. Pylakutty
                                                                   Cisco
                                                       December 21, 2018

                  Root initiated routing state in RPL
                   draft-ietf-roll-dao-projection-05

Abstract

   This document proposes a protocol extension to RPL that enables to
   install a limited amount of centrally-computed routes in a RPL graph,
   enabling loose source routing down a non-storing mode DODAG, or
   transversal routes inside the DODAG.  As opposed to the classical
   route injection in RPL that are injected by the end devices, this
   draft enables the root of the DODAG to projects the routes that are
   needed on the nodes where they should be installed.

Status of This Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

   Internet-Drafts are working documents of the Internet Engineering
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   This Internet-Draft will expire on June 24, 2019.

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   Copyright (c) 2018 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal
   Provisions Relating to IETF Documents

Thubert, et al.           Expires June 24, 2019                 [Page 1]
Internet-Draft     Root initiated routing state in RPL     December 2018

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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   3
     2.1.  BCP 14  . . . . . . . . . . . . . . . . . . . . . . . . .   3
     2.2.  Subset of a 6LoWPAN Glossary  . . . . . . . . . . . . . .   4
     2.3.  New Terms . . . . . . . . . . . . . . . . . . . . . . . .   4
     2.4.  References  . . . . . . . . . . . . . . . . . . . . . . .   5
   3.  Extending RFC 6550  . . . . . . . . . . . . . . . . . . . . .   5
     3.1.  RPL Instances . . . . . . . . . . . . . . . . . . . . . .   5
     3.2.  New RPL Control Message Options . . . . . . . . . . . . .   6
     3.3.  Projected DAO . . . . . . . . . . . . . . . . . . . . . .   7
       3.3.1.  Non-Storing Mode P-Route  . . . . . . . . . . . . . .   8
       3.3.2.  Storing-Mode P-Route  . . . . . . . . . . . . . . . .  10
   4.  Security Considerations . . . . . . . . . . . . . . . . . . .  12
   5.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  12
     5.1.  New RPL Control Codes . . . . . . . . . . . . . . . . . .  12
     5.2.  Error in Projected Route ICMPv6 Code  . . . . . . . . . .  13
   6.  Acknowledgments . . . . . . . . . . . . . . . . . . . . . . .  13
   7.  References  . . . . . . . . . . . . . . . . . . . . . . . . .  13
     7.1.  Normative References  . . . . . . . . . . . . . . . . . .  14
     7.2.  Informative References  . . . . . . . . . . . . . . . . .  15
   Appendix A.  Applications . . . . . . . . . . . . . . . . . . . .  15
     A.1.  Loose Source Routing in Non-storing Mode  . . . . . . . .  15
     A.2.  Transversal Routes in storing and non-storing modes . . .  17
   Appendix B.  Examples . . . . . . . . . . . . . . . . . . . . . .  19
     B.1.  Using storing mode P-DAO in non-storing mode MOP  . . . .  19
     B.2.  Projecting a storing-mode transversal route . . . . . . .  20
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  22

1.  Introduction

   The "Routing Protocol for Low Power and Lossy Networks" [RFC6550]
   (LLN)(RPL) is a generic Distance Vector protocol that is well suited
   low energy Internet of Things (IoT) networks.  RPL forms Destination
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