Routing for RPL Leaves
draft-ietf-roll-unaware-leaves-22

Document Type Active Internet-Draft (roll WG)
Authors Pascal Thubert  , Michael Richardson 
Last updated 2020-10-27 (latest revision 2020-10-09)
Replaces draft-thubert-roll-unaware-leaves
Stream IETF
Intended RFC status Proposed Standard
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Stream WG state Submitted to IESG for Publication (wg milestone: Mar 2020 - Initial submission o... )
Document shepherd Rahul Jadhav
Shepherd write-up Show (last changed 2020-04-21)
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Responsible AD Alvaro Retana
Send notices to JADHAV Rahul <rahul.ietf@gmail.com>, aretana.ietf@gmail.com
ROLL                                                     P. Thubert, Ed.
Internet-Draft                                             Cisco Systems
Updates: 6550, 6775, 8505 (if approved)                    M. Richardson
Intended status: Standards Track                               Sandelman
Expires: 12 April 2021                                    9 October 2020

                         Routing for RPL Leaves
                   draft-ietf-roll-unaware-leaves-22

Abstract

   This specification updates RFC6550, RFC6775, and RFC8505, to provide
   routing services to RPL Unaware Leaves that implement 6LoWPAN ND and
   the extensions therein.

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
   Task Force (IETF).  Note that other groups may also distribute
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   This Internet-Draft will expire on 12 April 2021.

Copyright Notice

   Copyright (c) 2020 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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   Please review these documents carefully, as they describe your rights
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Thubert & Richardson      Expires 12 April 2021                 [Page 1]
Internet-Draft             RPL Unaware Leaves               October 2020

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   5
     2.1.  Requirements Language . . . . . . . . . . . . . . . . . .   5
     2.2.  Glossary  . . . . . . . . . . . . . . . . . . . . . . . .   5
     2.3.  References  . . . . . . . . . . . . . . . . . . . . . . .   6
   3.  RPL External Routes and Dataplane Artifacts . . . . . . . . .   7
   4.  6LoWPAN Neighbor Discovery  . . . . . . . . . . . . . . . . .   8
     4.1.  RFC 6775 Address Registration . . . . . . . . . . . . . .   8
     4.2.  RFC 8505 Extended Address Registration  . . . . . . . . .   8
       4.2.1.  R Flag  . . . . . . . . . . . . . . . . . . . . . . .   9
       4.2.2.  TID, "I" Field and Opaque Fields  . . . . . . . . . .   9
       4.2.3.  ROVR  . . . . . . . . . . . . . . . . . . . . . . . .   9
     4.3.  RFC 8505 Extended DAR/DAC . . . . . . . . . . . . . . . .  10
       4.3.1.  RFC 7400 Capability Indication Option . . . . . . . .  10
   5.  Requirements on the RPL-Unware Leaf . . . . . . . . . . . . .  11
     5.1.  Support of 6LoWPAN ND . . . . . . . . . . . . . . . . . .  11
     5.2.  Support of IPv6 Encapsulation . . . . . . . . . . . . . .  12
     5.3.  Support of the HbH Header . . . . . . . . . . . . . . . .  12
     5.4.  Support of the Routing Header . . . . . . . . . . . . . .  12
   6.  Enhancements to RFC 6550  . . . . . . . . . . . . . . . . . .  12
     6.1.  Updated RPL Target Option . . . . . . . . . . . . . . . .  13
     6.2.  New Flag in the RPL DODAG Configuration Option  . . . . .  14
     6.3.  Updated RPL Status  . . . . . . . . . . . . . . . . . . .  15
   7.  Enhancements to draft-ietf-roll-efficient-npdao . . . . . . .  16
   8.  Enhancements to RFC 6775 and RFC8505  . . . . . . . . . . . .  17
   9.  Protocol Operations for Unicast Addresses . . . . . . . . . .  17
     9.1.  General Flow  . . . . . . . . . . . . . . . . . . . . . .  18
     9.2.  Detailed Operation  . . . . . . . . . . . . . . . . . . .  20
       9.2.1.  Perspective of the 6LN Acting as RUL  . . . . . . . .  20
       9.2.2.  Perspective of the 6LR Acting as Border Router  . . .  22
       9.2.3.  Perspective of the RPL Root . . . . . . . . . . . . .  26
       9.2.4.  Perspective of the 6LBR . . . . . . . . . . . . . . .  27
   10. Protocol Operations for Multicast Addresses . . . . . . . . .  27
   11. Security Considerations . . . . . . . . . . . . . . . . . . .  29
   12. IANA Considerations . . . . . . . . . . . . . . . . . . . . .  31
     12.1.  Fixing the Address Registration Option Flags . . . . . .  31
     12.2.  Resizing the ARO Status values . . . . . . . . . . . . .  31
     12.3.  New DODAG Configuration Option Flag  . . . . . . . . . .  31
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