IPv6 over Low-Power Wireless Personal Area Network (6LoWPAN) Routing Header
RFC 8138

Document Type RFC - Proposed Standard (April 2017; No errata)
Last updated 2017-04-11
Replaces draft-ietf-6lo-routing-dispatch
Stream IETF
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Reviews
Stream WG state Submitted to IESG for Publication
Document shepherd Michael Richardson
Shepherd write-up Show (last changed 2016-04-27)
IESG IESG state RFC 8138 (Proposed Standard)
Consensus Boilerplate Yes
Telechat date
Responsible AD Alvaro Retana
Send notices to "Michael Richardson" <mcr+ietf@sandelman.ca>, aretana@cisco.com
IANA IANA review state Version Changed - Review Needed
IANA action state RFC-Ed-Ack
Internet Engineering Task Force (IETF)                   P. Thubert, Ed.
Request for Comments: 8138                                         Cisco
Category: Standards Track                                     C. Bormann
ISSN: 2070-1721                                           Uni Bremen TZI
                                                              L. Toutain
                                                          IMT Atlantique
                                                               R. Cragie
                                                                     ARM
                                                              April 2017

      IPv6 over Low-Power Wireless Personal Area Network (6LoWPAN)
                             Routing Header

Abstract

   This specification introduces a new IPv6 over Low-Power Wireless
   Personal Area Network (6LoWPAN) dispatch type for use in 6LoWPAN
   route-over topologies, which initially covers the needs of Routing
   Protocol for Low-Power and Lossy Networks (RPL) data packet
   compression (RFC 6550).  Using this dispatch type, this specification
   defines a method to compress the RPL Option (RFC 6553) information
   and Routing Header type 3 (RFC 6554), an efficient IP-in-IP
   technique, and is extensible for more applications.

Status of This Memo

   This is an Internet Standards Track document.

   This document is a product of the Internet Engineering Task Force
   (IETF).  It represents the consensus of the IETF community.  It has
   received public review and has been approved for publication by the
   Internet Engineering Steering Group (IESG).  Further information on
   Internet Standards is available in Section 2 of RFC 7841.

   Information about the current status of this document, any errata,
   and how to provide feedback on it may be obtained at
   http://www.rfc-editor.org/info/rfc8138.

Thubert, et al.              Standards Track                    [Page 1]
RFC 8138                 6LoWPAN Routing Header               April 2017

Copyright Notice

   Copyright (c) 2017 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
   Provisions Relating to IETF Documents
   (http://trustee.ietf.org/license-info) in effect on the date of
   publication of this document.  Please review these documents
   carefully, as they describe your rights and restrictions with respect
   to this document.  Code Components extracted from this document must
   include Simplified BSD License text as described in Section 4.e of
   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

Thubert, et al.              Standards Track                    [Page 2]
RFC 8138                 6LoWPAN Routing Header               April 2017

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   4
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   7
   3.  Using the Page Dispatch . . . . . . . . . . . . . . . . . . .   7
     3.1.  New Routing Header Dispatch (6LoRH) . . . . . . . . . . .   7
     3.2.  Placement of 6LoRH Headers  . . . . . . . . . . . . . . .   8
       3.2.1.  Relative to Non-6LoRH Headers . . . . . . . . . . . .   8
       3.2.2.  Relative to Other 6LoRH Headers . . . . . . . . . . .   8
   4.  6LoWPAN Routing Header General Format . . . . . . . . . . . .   9
     4.1.  Elective Format . . . . . . . . . . . . . . . . . . . . .  10
     4.2.  Critical Format . . . . . . . . . . . . . . . . . . . . .  10
     4.3.  Compressing Addresses . . . . . . . . . . . . . . . . . .  11
       4.3.1.  Coalescence . . . . . . . . . . . . . . . . . . . . .  11
       4.3.2.  DODAG Root Address Determination  . . . . . . . . . .  12
   5.  The SRH-6LoRH Header  . . . . . . . . . . . . . . . . . . . .  13
     5.1.  Encoding  . . . . . . . . . . . . . . . . . . . . . . . .  13
     5.2.  SRH-6LoRH General Operation . . . . . . . . . . . . . . .  14
       5.2.1.  Uncompressed SRH Operation  . . . . . . . . . . . . .  14
       5.2.2.  6LoRH-Compressed SRH Operation  . . . . . . . . . . .  15
       5.2.3.  Inner LOWPAN_IPHC Compression . . . . . . . . . . . .  15
     5.3.  The Design Point of Popping Entries . . . . . . . . . . .  16
     5.4.  Compression Reference for SRH-6LoRH Header Entries  . . .  17
     5.5.  Popping Headers . . . . . . . . . . . . . . . . . . . . .  18
     5.6.  Forwarding  . . . . . . . . . . . . . . . . . . . . . . .  19
   6.  The RPL Packet Information 6LoRH (RPI-6LoRH)  . . . . . . . .  19
     6.1.  Compressing the RPLInstanceID . . . . . . . . . . . . . .  21
     6.2.  Compressing the SenderRank  . . . . . . . . . . . . . . .  21
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