Asymmetric AODV-P2P-RPL in Low-Power and Lossy Networks (LLNs)
draft-ietf-roll-aodv-rpl-02

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Last updated 2017-09-09
Replaces draft-satish-roll-aodv-rpl
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ROLL                                                      S. Anamalamudi
Internet-Draft                           Huaiyin Institute of Technology
Intended status: Standards Track                                M. Zhang
Expires: March 13, 2018                                        AR. Sangi
                                                     Huawei Technologies
                                                              C. Perkins
                                                               Futurewei
                                                             S.V.R.Anand
                                             Indian Institute of Science
                                                       September 9, 2017

     Asymmetric AODV-P2P-RPL in Low-Power and Lossy Networks (LLNs)
                      draft-ietf-roll-aodv-rpl-02

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 hop-by-hop routing (storing mode) based
   on Ad Hoc On-demand Distance Vector Routing (AODV) based RPL
   protocol.  Two separate 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
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   This Internet-Draft will expire on March 13, 2018.

Copyright Notice

   Copyright (c) 2017 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

Anamalamudi, et al.      Expires March 13, 2018                 [Page 1]
Internet-Draft          draft-ietf-ROLL-AODV-RPL          September 2017

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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   4
   3.  Overview of AODV-RPL  . . . . . . . . . . . . . . . . . . . .   5
   4.  AODV-RPL Mode of Operation (MoP)  . . . . . . . . . . . . . .   5
   5.  RREQ Message  . . . . . . . . . . . . . . . . . . . . . . . .   9
   6.  RREP Message  . . . . . . . . . . . . . . . . . . . . . . . .  10
   7.  Gratuitous RREP . . . . . . . . . . . . . . . . . . . . . . .  12
   8.  Operation of Trickle Timer  . . . . . . . . . . . . . . . . .  13
   9.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  13
     9.1.  New Mode of Operation: AODV-RPL . . . . . . . . . . . . .  13
     9.2.  AODV-RPL Options: RREQ and RREP . . . . . . . . . . . . .  13
   10. Security Considerations . . . . . . . . . . . . . . . . . . .  13
   11. Future Work . . . . . . . . . . . . . . . . . . . . . . . . .  13
   12. References  . . . . . . . . . . . . . . . . . . . . . . . . .  14
     12.1.  Normative References . . . . . . . . . . . . . . . . . .  14
     12.2.  Informative References . . . . . . . . . . . . . . . . .  15
   Appendix A.  ETX/RSSI Values to select S bit  . . . . . . . . . .  15
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  16

1.  Introduction

   RPL[RFC6550], the IPv6 distance vector routing protocol for Low-power
   and Lossy Networks (LLNs), is designed to support multiple traffic
   flows through a root-based Destination-Oriented Directed Acyclic
   Graph (DODAG).  For traffic flows between routers within the DODAG
   (i.e., Point-to-Point (P2P) traffic), this means that data packets
   either have to traverse the root in non-storing mode (source
   routing), or traverse a common ancestor in storing mode (hop-by-hop
   routing).  Such P2P traffic is thereby likely to flow along sub-
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