Data Model for Static Context Header Compression (SCHC)
draft-ietf-lpwan-schc-yang-data-model-02

Document Type Active Internet-Draft (lpwan WG)
Last updated 2020-05-19 (latest revision 2020-02-28)
Replaces draft-toutain-lpwan-schc-yang-data-model
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lpwan Working Group                                          A. Minaburo
Internet-Draft                                                    Acklio
Intended status: Standards Track                              L. Toutain
Expires: August 31, 2020          Institut MINES TELECOM; IMT Atlantique
                                                       February 28, 2020

        Data Model for Static Context Header Compression (SCHC)
                draft-ietf-lpwan-schc-yang-data-model-02

Abstract

   This document describes a YANG data model for the SCHC (Static
   Context Header Compression) compression and fragmentation rules.

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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  SCHC rules  . . . . . . . . . . . . . . . . . . . . . . . . .   2
     2.1.  Compression Rules . . . . . . . . . . . . . . . . . . . .   3
     2.2.  Field Identifier  . . . . . . . . . . . . . . . . . . . .   4
     2.3.  Field length  . . . . . . . . . . . . . . . . . . . . . .   6
     2.4.  Field position  . . . . . . . . . . . . . . . . . . . . .   7
     2.5.  Direction Indicator . . . . . . . . . . . . . . . . . . .   7
     2.6.  Target Value  . . . . . . . . . . . . . . . . . . . . . .   8
     2.7.  Matching Operator . . . . . . . . . . . . . . . . . . . .   9
       2.7.1.  Matching Operator arguments . . . . . . . . . . . . .  10
     2.8.  Compression Decompresison Actions . . . . . . . . . . . .  10
       2.8.1.  Compression Decompression Action arguments  . . . . .  12
   3.  Rule definition . . . . . . . . . . . . . . . . . . . . . . .  12
     3.1.  Compression rule  . . . . . . . . . . . . . . . . . . . .  14
       3.1.1.  Compression context representation. . . . . . . . . .  14
       3.1.2.  Rule definition . . . . . . . . . . . . . . . . . . .  15
     3.2.  Fragmentation rule  . . . . . . . . . . . . . . . . . . .  16
     3.3.  YANG Tree . . . . . . . . . . . . . . . . . . . . . . . .  17
   4.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  19
   5.  Security considerations . . . . . . . . . . . . . . . . . . .  19
   6.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .  19
   7.  YANG Module . . . . . . . . . . . . . . . . . . . . . . . . .  19
   8.  Normative References  . . . . . . . . . . . . . . . . . . . .  33
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  33

1.  Introduction

2.  SCHC rules

   SCHC is a compression and fragmentation mechanism for constrained
   networks defined in [I-D.ietf-lpwan-ipv6-static-context-hc] it is
   based on a static context shared by two entities at the boundary this
   contrained network.  Draft [I-D.ietf-lpwan-ipv6-static-context-hc]
   provides an abstract representation of the rules used either for
   compression/decompression (or C/D) or fragmentation/reassembly (or F/
   R).  The goal of this document is to formalize the description of the
   rules to offer:

   o  universal representation of the rule to allow the same rule
      represention on both ends.  For instance; a device can provide the
      rule it uses to store them in the core SCHC C/D and F/R.

   o  a device or the core SCHC instance may update the other end to set
      upsome specific values (e.g.  IPv6 prefix, Destination
      address,...)

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