A 6loRH for BitStrings
draft-thubert-6lo-bier-dispatch-02

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6lo                                                      P. Thubert, Ed.
Internet-Draft                                                     Cisco
Intended status: Standards Track                              Z. Brodard
Expires: July 28, 2017                               Ecole Polytechnique
                                                                H. Jiang
                                                               G. Texier
                                                        Telecom Bretagne
                                                        January 24, 2017

                         A 6loRH for BitStrings
                   draft-thubert-6lo-bier-dispatch-02

Abstract

   This specification extends the 6LoWPAN Routing Header to signal
   BitStrings such as utilized in Bit Index Explicit Replication and its
   Traffic Engineering variant.

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

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Thubert, et al.           Expires July 28, 2017                 [Page 1]
Internet-Draft           A 6loRH for BitStrings             January 2017

   the Trust Legal Provisions and are provided without warranty as
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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   3
   3.  Applicability . . . . . . . . . . . . . . . . . . . . . . . .   3
   4.  The BIER-6LoRH encoding . . . . . . . . . . . . . . . . . . .   4
     4.1.  The Bit-by-bit BitStrings . . . . . . . . . . . . . . . .   5
     4.2.  Bloom Filters . . . . . . . . . . . . . . . . . . . . . .   5
     4.3.  Types of BIER-6LoRH header  . . . . . . . . . . . . . . .   5
   5.  Implementation Status . . . . . . . . . . . . . . . . . . . .   6
   6.  Security Considerations . . . . . . . . . . . . . . . . . . .   7
   7.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   7
   8.  Acknowledgments . . . . . . . . . . . . . . . . . . . . . . .   7
   9.  References  . . . . . . . . . . . . . . . . . . . . . . . . .   7
     9.1.  Normative References  . . . . . . . . . . . . . . . . . .   7
     9.2.  Informative References  . . . . . . . . . . . . . . . . .   8
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .   9

1.  Introduction

   The type of information that needs to be present in a packet inside
   the LLN but not outside of the LLN varies with the routing operation,
   but there is overall a need for an extensible compression technique
   that would simplify the IP-in-IP encapsulation, when needed, and
   optimally compress existing routing artifacts found in LLNs.

   The 6LoWPAN Routing Header (6LoRH) [RFC8025]
   [I-D.ietf-roll-routing-dispatch] is such a technique, that extends
   the 6lo adaptation layer framework [RFC4944], [RFC6282] so as to
   carry routing information for Route-over use cases.  The original
   specification includes the formats necessary for RPL such as the
   Source Route Header (SRH) and is intended to be extended for
   additional routing artifacts.

   The Bit Index Explicit Replication (BIER), as introduced in the BIER
   Architecture [I-D.ietf-bier-architecture], can be used as an
   alternate artifact to route multicast as well as unicast traffic.
   The Traffic Engineering for Bit Index Explicit Replication
   [I-D.eckert-bier-te-arch] (BIER-TE) adds support for traffic
   engineering by explicit hop-by-hop forwarding and loose hop
   forwarding of packets along a unicast route.

   This specification provides additional formats for the 6LoRH
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