Root initiated routing state in RPL
draft-ietf-roll-dao-projection-02

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Last updated 2017-09-19
Replaces draft-thubert-roll-dao-projection
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ROLL                                                     P. Thubert, Ed.
Internet-Draft                                              J. Pylakutty
Intended status: Standards Track                                   Cisco
Expires: March 23, 2018                               September 19, 2017

                  Root initiated routing state in RPL
                   draft-ietf-roll-dao-projection-02

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 March 23, 2018.

Copyright Notice

   Copyright (c) 2017 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
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Thubert & Pylakutty      Expires March 23, 2018                 [Page 1]
Internet-Draft     Root initiated routing state in RPL    September 2017

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

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   3
   3.  New RPL Control Message Options . . . . . . . . . . . . . . .   3
     3.1.  Via Information Option  . . . . . . . . . . . . . . . . .   4
   4.  Projected DAO . . . . . . . . . . . . . . . . . . . . . . . .   5
     4.1.  Non-storing Mode Projected DAO  . . . . . . . . . . . . .   6
     4.2.  Storing-Mode Projected DAO  . . . . . . . . . . . . . . .   8
   5.  Applications  . . . . . . . . . . . . . . . . . . . . . . . .  10
     5.1.  Loose Source Routing in Non-storing Mode  . . . . . . . .  10
     5.2.  Transversal Routes in storing and non-storing modes . . .  11
   6.  RPL Instances . . . . . . . . . . . . . . . . . . . . . . . .  13
   7.  Security Considerations . . . . . . . . . . . . . . . . . . .  14
   8.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  14
   9.  Acknowledgments . . . . . . . . . . . . . . . . . . . . . . .  14
   10. References  . . . . . . . . . . . . . . . . . . . . . . . . .  15
     10.1.  Normative References . . . . . . . . . . . . . . . . . .  15
     10.2.  Informative References . . . . . . . . . . . . . . . . .  15
   Appendix A.  Examples . . . . . . . . . . . . . . . . . . . . . .  16
     A.1.  Using storing mode P-DAO in non-storing mode MOP  . . . .  16
     A.2.  Projecting a storing-mode transversal route . . . . . . .  17
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  19

1.  Introduction

   The "Routing Protocol for Low Power and Lossy Networks" [RFC6550]
   (LLN)(RPL) is a generic Distance Vector protocol that is well suited
   for application in a variety of low energy Internet of Things (IoT)
   networks.  RPL forms Destination Oriented Directed Acyclic Graphs
   (DODAGs) in which the root often acts as the Border Router to connect
   the RPL domain to the Internet.  The root is responsible to select
   the RPL Instance that is used to forward a packet coming from the
   Internet into the RPL domain and set the related RPL information in
   the packets.

   The 6TiSCH architecture [I-D.ietf-6tisch-architecture] leverages RPL
   for its routing operation and considers the Deterministic Networking
   Architecture [I-D.ietf-detnet-architecture] as one possible model
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