Routing for RPL Leaves
draft-ietf-roll-unaware-leaves-09

Document Type Active Internet-Draft (roll WG)
Last updated 2020-01-27
Replaces draft-thubert-roll-unaware-leaves
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ROLL                                                     P. Thubert, Ed.
Internet-Draft                                             Cisco Systems
Updates: 6550, 8505 (if approved)                          M. Richardson
Intended status: Standards Track                               Sandelman
Expires: 30 July 2020                                    27 January 2020

                         Routing for RPL Leaves
                   draft-ietf-roll-unaware-leaves-09

Abstract

   This specification extends RFC6550 and RFC8505 to provide unicast and
   multicast routing services in a RPL domain to 6LNs that are plain
   Hosts and do not participate to RPL, and enables the RPL Root to
   proxy the EDAR/EDAC flow on behalf of the RULs and RANs in its DODAG.

Status of This Memo

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

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   This Internet-Draft will expire on 30 July 2020.

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   Copyright (c) 2020 IETF Trust and the persons identified as the
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Thubert & Richardson      Expires 30 July 2020                  [Page 1]
Internet-Draft             RPL Unaware Leaves               January 2020

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   4
     2.1.  BCP 14  . . . . . . . . . . . . . . . . . . . . . . . . .   4
     2.2.  References  . . . . . . . . . . . . . . . . . . . . . . .   4
     2.3.  Glossary  . . . . . . . . . . . . . . . . . . . . . . . .   5
   3.  6LoWPAN Neighbor Discovery  . . . . . . . . . . . . . . . . .   7
     3.1.  RFC 6775  . . . . . . . . . . . . . . . . . . . . . . . .   7
     3.2.  RFC 8505 Extended ARO . . . . . . . . . . . . . . . . . .   7
       3.2.1.  R Flag  . . . . . . . . . . . . . . . . . . . . . . .   8
       3.2.2.  TID, I Field and Opaque Fields  . . . . . . . . . . .   8
       3.2.3.  ROVR  . . . . . . . . . . . . . . . . . . . . . . . .   8
     3.3.  RFC 8505 Extended DAR/DAC . . . . . . . . . . . . . . . .   9
       3.3.1.  RFC 7400 Capability Indication Option . . . . . . . .   9
   4.  Updating RFC 6550 . . . . . . . . . . . . . . . . . . . . . .  10
   5.  Updating RFC 8505 . . . . . . . . . . . . . . . . . . . . . .  11
   6.  Requirements on the RPL-Unware Leaf . . . . . . . . . . . . .  11
     6.1.  Support of 6LoWPAN ND . . . . . . . . . . . . . . . . . .  11
     6.2.  External Routes and RPL Artifacts . . . . . . . . . . . .  12
       6.2.1.  Support of the HbH Header . . . . . . . . . . . . . .  13
       6.2.2.  Support of the Routing Header . . . . . . . . . . . .  13
       6.2.3.  Support of IPv6 Encapsulation . . . . . . . . . . . .  13
   7.  Updated RPL Status  . . . . . . . . . . . . . . . . . . . . .  13
   8.  Updated RPL Target option . . . . . . . . . . . . . . . . . .  14
   9.  Protocol Operations for Unicast Addresses . . . . . . . . . .  15
     9.1.  General Flow  . . . . . . . . . . . . . . . . . . . . . .  15
       9.1.1.  In RPL Non-Storing-Mode . . . . . . . . . . . . . . .  16
       9.1.2.  In RPL Storing-Mode . . . . . . . . . . . . . . . . .  19
     9.2.  Detailed Operation  . . . . . . . . . . . . . . . . . . .  19
       9.2.1.  By the 6LN  . . . . . . . . . . . . . . . . . . . . .  20
       9.2.2.  By the 6LR  . . . . . . . . . . . . . . . . . . . . .  21
       9.2.3.  By the RPL Root . . . . . . . . . . . . . . . . . . .  23
       9.2.4.  By the 6LBR . . . . . . . . . . . . . . . . . . . . .  24
   10. Protocol Operations for Multicast Addresses . . . . . . . . .  24
   11. Security Considerations . . . . . . . . . . . . . . . . . . .  26
   12. IANA Considerations . . . . . . . . . . . . . . . . . . . . .  27
     12.1.  New DODAG Configuration Option Flag  . . . . . . . . . .  27
     12.2.  RPL Target Option Flags  . . . . . . . . . . . . . . . .  27
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