AODV based RPL Extensions for Supporting Asymmetric P2P Links in Low-Power and Lossy Networks
draft-ietf-roll-aodv-rpl-08

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ROLL                                                      S. Anamalamudi
Internet-Draft                                         SRM University-AP
Intended status: Standards Track                                M. Zhang
Expires: November 8, 2020                            Huawei Technologies
                                                              C. Perkins
                                                  Deep Blue Sky Networks
                                                             S.V.R.Anand
                                             Indian Institute of Science
                                                                  B. Liu
                                                     Huawei Technologies
                                                             May 7, 2020

 AODV based RPL Extensions for Supporting Asymmetric P2P Links in Low-
                        Power and Lossy Networks
                      draft-ietf-roll-aodv-rpl-08

Abstract

   Route discovery for symmetric and asymmetric Point-to-Point (P2P)
   traffic flows is a desirable feature in Low power and Lossy Networks
   (LLNs).  For that purpose, this document specifies a reactive P2P
   route discovery mechanism for both hop-by-hop routing and source
   routing: Ad Hoc On-demand Distance Vector Routing (AODV) based RPL
   protocol (AODV-RPL).  Paired Instances are used to construct
   directional paths, in case some of the links between source and
   target node are asymmetric.

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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   material or to cite them other than as "work in progress."

   This Internet-Draft will expire on November 8, 2020.

Anamalamudi, et al.     Expires November 8, 2020                [Page 1]
Internet-Draft                  AODV-RPL                        May 2020

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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   3
   3.  Overview of AODV-RPL  . . . . . . . . . . . . . . . . . . . .   5
   4.  AODV-RPL DIO Options  . . . . . . . . . . . . . . . . . . . .   6
     4.1.  AODV-RPL RREQ Option  . . . . . . . . . . . . . . . . . .   6
     4.2.  AODV-RPL RREP Option  . . . . . . . . . . . . . . . . . .   8
     4.3.  AODV-RPL Target Option  . . . . . . . . . . . . . . . . .  10
   5.  Symmetric and Asymmetric Routes . . . . . . . . . . . . . . .  11
   6.  AODV-RPL Operation  . . . . . . . . . . . . . . . . . . . . .  13
     6.1.  Route Request Generation  . . . . . . . . . . . . . . . .  13
     6.2.  Receiving and Forwarding RREQ messages  . . . . . . . . .  14
       6.2.1.  General Processing  . . . . . . . . . . . . . . . . .  14
       6.2.2.  Additional Processing for Multiple Targets  . . . . .  15
     6.3.  Generating Route Reply (RREP) at TargNode . . . . . . . .  16
       6.3.1.  RREP-DIO for Symmetric route  . . . . . . . . . . . .  16
       6.3.2.  RREP-DIO for Asymmetric Route . . . . . . . . . . . .  16
       6.3.3.  RPLInstanceID Pairing . . . . . . . . . . . . . . . .  17
     6.4.  Receiving and Forwarding Route Reply  . . . . . . . . . .  17
   7.  Gratuitous RREP . . . . . . . . . . . . . . . . . . . . . . .  19
   8.  Operation of Trickle Timer  . . . . . . . . . . . . . . . . .  19
   9.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  20
     9.1.  New Mode of Operation: AODV-RPL . . . . . . . . . . . . .  20
     9.2.  AODV-RPL Options: RREQ, RREP, and Target  . . . . . . . .  20
   10. Security Considerations . . . . . . . . . . . . . . . . . . .  20
   11. Link State Determination  . . . . . . . . . . . . . . . . . .  21
   12. References  . . . . . . . . . . . . . . . . . . . . . . . . .  21
     12.1.  Normative References . . . . . . . . . . . . . . . . . .  21