Reactive Discovery of Point-to-Point Routes in Low Power and Lossy Networks
draft-ietf-roll-p2p-rpl-08

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Internet Engineering Task Force                            M. Goyal, Ed.
Internet-Draft                                   University of Wisconsin
Intended status: Experimental                                  Milwaukee
Expires: September 3, 2012                                   E. Baccelli
                                                              M. Philipp
                                                                   INRIA
                                                               A. Brandt
                                                           Sigma Designs
                                                             J. Martocci
                                                        Johnson Controls
                                                           March 2, 2012

   Reactive Discovery of Point-to-Point Routes in Low Power and Lossy
                                Networks
                       draft-ietf-roll-p2p-rpl-08

Abstract

   This document specifies a point-to-point route discovery mechanism,
   complementary to the RPL core functionality.  This mechanism allows
   an IPv6 router to discover "on demand" routes to one or more IPv6
   routers in the LLN such that the discovered routes meets specified
   metrics constraints.

Status of this Memo

   This Internet-Draft is submitted to IETF 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 September 3, 2012.

Copyright Notice

   Copyright (c) 2012 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

Goyal, et al.           Expires September 3, 2012               [Page 1]
Internet-Draft         draft-ietf-roll-p2p-rpl-08             March 2012

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Table of Contents

   1.  Introduction . . . . . . . . . . . . . . . . . . . . . . . . .  3
   2.  The Use Cases  . . . . . . . . . . . . . . . . . . . . . . . .  3
   3.  Terminology  . . . . . . . . . . . . . . . . . . . . . . . . .  4
   4.  Applicability  . . . . . . . . . . . . . . . . . . . . . . . .  5
   5.  Functional Overview  . . . . . . . . . . . . . . . . . . . . .  5
   6.  P2P Route Discovery Mode Of Operation  . . . . . . . . . . . .  8
     6.1.  Setting a P2P Mode DIO . . . . . . . . . . . . . . . . . .  8
   7.  New RPL Control Message Options  . . . . . . . . . . . . . . . 11
     7.1.  P2P Route Discovery Option (P2P-RDO) . . . . . . . . . . . 11
     7.2.  Data Option  . . . . . . . . . . . . . . . . . . . . . . . 14
   8.  The Discovery Reply Object (DRO) . . . . . . . . . . . . . . . 14
     8.1.  Secure DRO . . . . . . . . . . . . . . . . . . . . . . . . 16
     8.2.  Setting a P2P-RDO Carried in a Discovery Reply Object  . . 16
   9.  P2P-RPL Route Discovery By Creating a Temporary DAG  . . . . . 17
     9.1.  Joining a Temporary DAG  . . . . . . . . . . . . . . . . . 17
     9.2.  Trickle Operation For P2P Mode DIOs  . . . . . . . . . . . 18
     9.3.  Processing a P2P Mode DIO  . . . . . . . . . . . . . . . . 19
     9.4.  Additional Processing of a P2P Mode DIO At An
           Intermediate Router  . . . . . . . . . . . . . . . . . . . 20
     9.5.  Additional Processing of a P2P Mode DIO At The Target  . . 21
     9.6.  Processing a DRO At An Intermediate Router . . . . . . . . 22
     9.7.  Processing a DRO At The Origin . . . . . . . . . . . . . . 23
   10. The Discovery Reply Object Acknowledgement (DRO-ACK) . . . . . 24
   11. Packet Forwarding Along a Route Discovered Using P2P-RPL . . . 25
   12. Constants  . . . . . . . . . . . . . . . . . . . . . . . . . . 25
   13. Interoperability with Core RPL . . . . . . . . . . . . . . . . 26
   14. Security Considerations  . . . . . . . . . . . . . . . . . . . 26
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