Network Management Datastore Architecture (NMDA)
RFC 8342

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draft-ietf-netmod-revised-datastores-10.txt:
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ietf-datastores@2018-01-11.yang:
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yanglint 0.14.73: yanglint --verbose -p {rfclib} -p {draftlib} -p {tmplib} {model} -i:
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ietf-origin@2018-01-11.yang:
pyang 1.7.4: pyang --verbose --ietf -p {libs} {model}:
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yanglint 0.14.73: yanglint --verbose -p {rfclib} -p {draftlib} -p {tmplib} {model} -i:
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Internet Engineering Task Force (IETF)                      M. Bjorklund
Request for Comments: 8342                                Tail-f Systems
Updates: 7950                                           J. Schoenwaelder
Category: Standards Track                              Jacobs University
ISSN: 2070-1721                                                P. Shafer
                                                               K. Watsen
                                                        Juniper Networks
                                                               R. Wilton
                                                           Cisco Systems
                                                              March 2018

            Network Management Datastore Architecture (NMDA)

Abstract

   Datastores are a fundamental concept binding the data models written
   in the YANG data modeling language to network management protocols
   such as the Network Configuration Protocol (NETCONF) and RESTCONF.
   This document defines an architectural framework for datastores based
   on the experience gained with the initial simpler model, addressing
   requirements that were not well supported in the initial model.  This
   document updates RFC 7950.

Status of This Memo

   This is an Internet Standards Track document.

   This document is a product of the Internet Engineering Task Force
   (IETF).  It represents the consensus of the IETF community.  It has
   received public review and has been approved for publication by the
   Internet Engineering Steering Group (IESG).  Further information on
   Internet Standards is available in Section 2 of RFC 7841.

   Information about the current status of this document, any errata,
   and how to provide feedback on it may be obtained at
   https://www.rfc-editor.org/info/rfc8342.

Bjorklund, et al.            Standards Track                    [Page 1]
RFC 8342                          NMDA                        March 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
   2. Objectives ......................................................4
   3. Terminology .....................................................5
   4. Background ......................................................8
      4.1. Original Model of Datastores ...............................9
   5. Architectural Model of Datastores ..............................11
      5.1. Conventional Configuration Datastores .....................12
           5.1.1. The Startup Configuration Datastore (<startup>) ....12
           5.1.2. The Candidate Configuration Datastore
                  (<candidate>) ......................................13
           5.1.3. The Running Configuration Datastore (<running>) ....13
           5.1.4. The Intended Configuration Datastore (<intended>) ..13
      5.2. Dynamic Configuration Datastores ..........................14
      5.3. The Operational State Datastore (<operational>) ...........14
           5.3.1. Remnant Configuration ..............................16
           5.3.2. Missing Resources ..................................16
           5.3.3. System-Controlled Resources ........................16
           5.3.4. Origin Metadata Annotation .........................17
   6. Implications on YANG ...........................................18
      6.1. XPath Context .............................................18
      6.2. Invocation of Actions and RPCs ............................19
   7. YANG Modules ...................................................20
   8. IANA Considerations ............................................26
      8.1. Updates to the IETF XML Registry ..........................26
      8.2. Updates to the YANG Module Names Registry .................27
   9. Security Considerations ........................................27
   10. References ....................................................28
      10.1. Normative References .....................................28
      10.2. Informative References ...................................29

Bjorklund, et al.            Standards Track                    [Page 2]
RFC 8342                          NMDA                        March 2018

   Appendix A. Guidelines for Defining Datastores ....................31