CoAP Management Interface
draft-ietf-core-comi-04

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CoRE                                                   M. Veillette, Ed.
Internet-Draft                                   Trilliant Networks Inc.
Intended status: Standards Track                    P. van der Stok, Ed.
Expires: May 16, 2019                                         consultant
                                                                A. Pelov
                                                                  Acklio
                                                              A. Bierman
                                                               YumaWorks
                                                       November 12, 2018

                       CoAP Management Interface
                        draft-ietf-core-comi-04

Abstract

   This document describes a network management interface for
   constrained devices and networks, called CoAP Management Interface
   (CoMI).  The Constrained Application Protocol (CoAP) is used to
   access datastore and data node resources specified in YANG, or SMIv2
   converted to YANG.  CoMI uses the YANG to CBOR mapping and converts
   YANG identifier strings to numeric identifiers for payload size
   reduction.  CoMI extends the set of YANG based protocols, NETCONF and
   RESTCONF, with the capability to manage constrained devices and
   networks.

Note

   Discussion and suggestions for improvement are requested, and should
   be sent to yot@ietf.org.

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 https://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
   material or to cite them other than as "work in progress."

   This Internet-Draft will expire on May 16, 2019.

Veillette, et al.         Expires May 16, 2019                  [Page 1]
Internet-Draft                    CoMI                     November 2018

Copyright Notice

   Copyright (c) 2018 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
   (https://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.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
     1.1.  Terminology . . . . . . . . . . . . . . . . . . . . . . .   4
   2.  CoMI Architecture . . . . . . . . . . . . . . . . . . . . . .   5
     2.1.  Major differences between RESTCONF and CoMI . . . . . . .   6
     2.2.  Compression of YANG identifiers . . . . . . . . . . . . .   7
     2.3.  Instance identifier . . . . . . . . . . . . . . . . . . .   8
     2.4.  Content-Formats . . . . . . . . . . . . . . . . . . . . .   8
     2.5.  Unified datastore . . . . . . . . . . . . . . . . . . . .  10
   3.  Example syntax  . . . . . . . . . . . . . . . . . . . . . . .  11
   4.  CoAP Interface  . . . . . . . . . . . . . . . . . . . . . . .  11
     4.1.  Using the 'k' Uri-Query option  . . . . . . . . . . . . .  13
     4.2.  Data Retrieval  . . . . . . . . . . . . . . . . . . . . .  14
       4.2.1.  Using the 'c' Uri-Query option  . . . . . . . . . . .  15
       4.2.2.  Using the 'd' Uri-Query option  . . . . . . . . . . .  15
       4.2.3.  GET . . . . . . . . . . . . . . . . . . . . . . . . .  16
       4.2.4.  FETCH . . . . . . . . . . . . . . . . . . . . . . . .  19
     4.3.  Data Editing  . . . . . . . . . . . . . . . . . . . . . .  20
       4.3.1.  Data Ordering . . . . . . . . . . . . . . . . . . . .  20
       4.3.2.  POST  . . . . . . . . . . . . . . . . . . . . . . . .  20
       4.3.3.  PUT . . . . . . . . . . . . . . . . . . . . . . . . .  21
       4.3.4.  iPATCH  . . . . . . . . . . . . . . . . . . . . . . .  22
       4.3.5.  DELETE  . . . . . . . . . . . . . . . . . . . . . . .  23
     4.4.  Full datastore access . . . . . . . . . . . . . . . . . .  23
       4.4.1.  Full datastore examples . . . . . . . . . . . . . . .  24
     4.5.  Event stream  . . . . . . . . . . . . . . . . . . . . . .  25
       4.5.1.  Notify Examples . . . . . . . . . . . . . . . . . . .  26
     4.6.  RPC statements  . . . . . . . . . . . . . . . . . . . . .  27
       4.6.1.  RPC Example . . . . . . . . . . . . . . . . . . . . .  27