6LoWPAN Routing Header
draft-ietf-roll-routing-dispatch-05

Document Type Active Internet-Draft (roll WG)
Last updated 2017-03-22 (latest revision 2016-10-27)
Replaces draft-ietf-6lo-routing-dispatch
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roll                                                     P. Thubert, Ed.
Internet-Draft                                                     Cisco
Intended status: Standards Track                              C. Bormann
Expires: April 30, 2017                                   Uni Bremen TZI
                                                              L. Toutain
                                                    IMT-TELECOM Bretagne
                                                               R. Cragie
                                                                     ARM
                                                        October 27, 2016

                         6LoWPAN Routing Header
                  draft-ietf-roll-routing-dispatch-05

Abstract

   This specification introduces a new 6LoWPAN dispatch type for use in
   6LoWPAN Route-Over topologies, that initially covers the needs of RPL
   (RFC6550) data packets compression.  Using this dispatch type, this
   specification defines a method to compress RPL Option (RFC6553)
   information and Routing Header type 3 (RFC6554), an efficient IP-in-
   IP technique and is extensible for more applications.

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
   working documents as Internet-Drafts.  The list of current Internet-
   Drafts is at http://datatracker.ietf.org/drafts/current/.

   Internet-Drafts are draft documents valid for a maximum of six months
   and may be updated, replaced, or obsoleted by other documents at any
   time.  It is inappropriate to use Internet-Drafts as reference
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   This Internet-Draft will expire on April 30, 2017.

Copyright Notice

   Copyright (c) 2016 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

Thubert, et al.          Expires April 30, 2017                 [Page 1]
Internet-Draft           6LoWPAN Routing Header             October 2016

   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.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   6
   3.  Using the Page Dispatch . . . . . . . . . . . . . . . . . . .   6
     3.1.  New Routing Header Dispatch (6LoRH) . . . . . . . . . . .   6
     3.2.  Placement Of 6LoRH headers  . . . . . . . . . . . . . . .   7
       3.2.1.  Relative To Non-6LoRH Headers . . . . . . . . . . . .   7
       3.2.2.  Relative To Other 6LoRH Headers . . . . . . . . . . .   7
   4.  6LoWPAN Routing Header General Format . . . . . . . . . . . .   8
     4.1.  Elective Format . . . . . . . . . . . . . . . . . . . . .   9
     4.2.  Critical Format . . . . . . . . . . . . . . . . . . . . .   9
     4.3.  Compressing Addresses . . . . . . . . . . . . . . . . . .  10
       4.3.1.  Coalescence . . . . . . . . . . . . . . . . . . . . .  10
       4.3.2.  DODAG Root Address Determination  . . . . . . . . . .  11
   5.  The SRH 6LoRH Header  . . . . . . . . . . . . . . . . . . . .  12
     5.1.  Encoding  . . . . . . . . . . . . . . . . . . . . . . . .  12
     5.2.  SRH-6LoRH General Operation . . . . . . . . . . . . . . .  13
       5.2.1.  Uncompressed SRH Operation  . . . . . . . . . . . . .  13
       5.2.2.  6LoRH-Compressed SRH Operation  . . . . . . . . . . .  14
       5.2.3.  Inner LOWPAN_IPHC Compression . . . . . . . . . . . .  14
     5.3.  The Design Point of Popping Entries . . . . . . . . . . .  15
     5.4.  Compression Reference for SRH-6LoRH header entries  . . .  16
     5.5.  Popping Headers . . . . . . . . . . . . . . . . . . . . .  17
     5.6.  Forwarding  . . . . . . . . . . . . . . . . . . . . . . .  17
   6.  The RPL Packet Information 6LoRH  . . . . . . . . . . . . . .  18
     6.1.  Compressing the RPLInstanceID . . . . . . . . . . . . . .  19
     6.2.  Compressing the SenderRank  . . . . . . . . . . . . . . .  20
     6.3.  The Overall RPI-6LoRH encoding  . . . . . . . . . . . . .  20
   7.  The IP-in-IP 6LoRH Header . . . . . . . . . . . . . . . . . .  23
   8.  Management Considerations . . . . . . . . . . . . . . . . . .  24
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