Constrained YANG Module Library
draft-veillette-core-yang-library-03

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Last updated 2018-09-21
Replaces draft-veillette-core-cool-library
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Internet Engineering Task Force                        M. Veillette, Ed.
Internet-Draft                                   Trilliant Networks Inc.
Intended status: Standards Track                      September 21, 2018
Expires: March 25, 2019

                    Constrained YANG Module Library
                  draft-veillette-core-yang-library-03

Abstract

   This document describes a constrained version of the YANG library
   that provides information about the YANG modules, datastores, and
   datastore schemas used by a constrained network management server
   (e.g., a CoMI server).

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 25, 2019.

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
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   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Terminology and Notation  . . . . . . . . . . . . . . . . . .   2
   3.  Overview  . . . . . . . . . . . . . . . . . . . . . . . . . .   3
     3.1.  Tree diagram  . . . . . . . . . . . . . . . . . . . . . .   3
     3.2.  Major differences between ietf-constrained-yang-library
           and ietf-yang-library . . . . . . . . . . . . . . . . . .   4
   4.  YANG Module "ietf-constrained-yang-library" . . . . . . . . .   5
   5.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  13
     5.1.  YANG Module Registry  . . . . . . . . . . . . . . . . . .  13
   6.  Security Considerations . . . . . . . . . . . . . . . . . . .  13
   7.  Acknowledgments . . . . . . . . . . . . . . . . . . . . . . .  13
   8.  References  . . . . . . . . . . . . . . . . . . . . . . . . .  14
     8.1.  Normative References  . . . . . . . . . . . . . . . . . .  14
     8.2.  Informative References  . . . . . . . . . . . . . . . . .  14
   Author's Address  . . . . . . . . . . . . . . . . . . . . . . . .  15

1.  Introduction

   There is a need for a standard mechanism to expose which YANG
   modules, datastores and datastore schemas are in use by a constrained
   network management server.  This document defines the YANG module
   'ietf-constrained-yang-library' that provides this information.

   YANG module 'ietf-constrained-yang-library' shares the same data
   model and objectives as 'ietf-yang-library', only datatypes and
   mandatory requirements have been updated to minimize its size to
   allow its implementation by Constrained Nodes and/or Constrained
   Networks as defined by [RFC7228].  To review the list of objectives
   and proposed data model, please refer to
   [I-D.ietf-netconf-rfc7895bis] section 2 and 3.

2.  Terminology and Notation

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
   document are to be interpreted as described in [RFC2119].

   The following terms are defined in [RFC7950]: client, deviation,
   feature, module, submodule and server.

   The following term is defined in [I-D.ietf-core-yang-cbor]: YANG
   Schema Item iDentifier (SID).

   The following terms are defined in [I-D.ietf-netconf-rfc7895bis]:
   YANG library and YANG library checksum.

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3.  Overview

   The conceptual model of the YANG library is depicted in Figure 1.

   +-----------+
   | datastore |
   +-----------+
        |
        | has a
        V
   +-----------+            +--------+                +------------+
   | datastore |  union of  | module |  consists of   | modules +  |
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