6lowpan ESC Dispatch Code Points and Guidelines
draft-ietf-6lo-dispatch-iana-registry-05

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Document Type Active Internet-Draft (6lo WG)
Last updated 2016-11-16 (latest revision 2016-09-16)
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6lo                                                       S. Chakrabarti
Internet-Draft                                                  Ericsson
Updates: 4944, 6282 (if approved)                          G. Montenegro
Intended status: Standards Track                               Microsoft
Expires: March 20, 2017                                         R. Droms
                                                                   Cisco
                                                             J. Woodyatt
                                                                    Nest
                                                      September 16, 2016

            6lowpan ESC Dispatch Code Points and Guidelines
                draft-ietf-6lo-dispatch-iana-registry-05

Abstract

   RFC4944 defines the ESC dispatch type to allow for additional
   dispatch bytes in the 6lowpan header.  The value of the ESC byte was
   updated by RFC6282, however, its usage was not defined either in
   RFC6282 or in RFC4944.  This document updates RFC4944 and RFC6282 by
   defining the ESC extension byte code points including registration of
   entries for known use cases at the time of writing of this document.

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
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   This Internet-Draft will expire on March 20, 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

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   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 . . . . . . . . . . . . . . . . . . . . . . . . . . 3
   3.  Usage of ESC dispatch bytes . . . . . . . . . . . . . . . . . . 3
     3.1.  Interaction with other RFC4944 implementations  . . . . . . 4
     3.2.  ESC Extension Bytes Typical Sequence  . . . . . . . . . . . 5
     3.3.  ITU-T G.9903  ESC type usage  . . . . . . . . . . . . . . . 5
     3.4.  NALP and ESC bytes  . . . . . . . . . . . . . . . . . . . . 6
   4.  IANA Considerations . . . . . . . . . . . . . . . . . . . . . . 6
   5.  Security Considerations . . . . . . . . . . . . . . . . . . . . 7
   6.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . . . 7
   7.  References  . . . . . . . . . . . . . . . . . . . . . . . . . . 8
     7.1.  Normative References  . . . . . . . . . . . . . . . . . . . 8
     7.2.  Informative References  . . . . . . . . . . . . . . . . . . 8
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . . . 8

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1.  Introduction

   [RFC4944] section 5.1 defines the dispatch header and types.  The ESC
   type is defined for using additional dispatch bytes in the 6lowpan
   header.  RFC 6282 modifies the value of the ESC dispatch type and it
   is recorded in IANA registry [6LOWPAN-IANA].  However, the bytes and
   usage following the ESC byte are not defined in either [RFC4944] and
   [RFC6282].  However, in recent years with 6lowpan deployments,
   implementations and standards organizations have started using the
   ESC extension bytes and co-ordination between the respective
   organizations and IETF/IANA is needed.

   The following sections record the ITU-T specification for ESC
   dispatch byte code points as an existing known usage and propose the
   definition of ESC extension bytes for future applications.  The
   document also requests IANA actions for the first extension byte
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