Comparison of NMDA datastores
draft-clemm-netmod-nmda-diff-00

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Network Working Group                                           A. Clemm
Internet-Draft                                                     Y. Qu
Intended status: Standards Track                                  Huawei
Expires: December 14, 2018                                   J. Tantsura
                                                          Nuage Networks
                                                              A. Bierman
                                                               YumaWorks
                                                           June 12, 2018

                     Comparison of NMDA datastores
                    draft-clemm-netmod-nmda-diff-00

Abstract

   This document defines an RPC operation to compare management
   datastores that comply with the NMDA architecture.

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 December 14, 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

Clemm, et al.           Expires December 14, 2018               [Page 1]
Internet-Draft                                                 June 2018

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

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Key Words . . . . . . . . . . . . . . . . . . . . . . . . . .   3
   3.  Definitions and Acronyms  . . . . . . . . . . . . . . . . . .   3
   4.  Data Model Overview . . . . . . . . . . . . . . . . . . . . .   4
   5.  YANG Data Model . . . . . . . . . . . . . . . . . . . . . . .   5
   6.  Example . . . . . . . . . . . . . . . . . . . . . . . . . . .   8
   7.  Open Issues . . . . . . . . . . . . . . . . . . . . . . . . .  10
   8.  Possible Future Extensions  . . . . . . . . . . . . . . . . .  10
   9.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  11
     9.1.  Updates to the IETF XML Registry  . . . . . . . . . . . .  11
     9.2.  Updates to the YANG Module Names Registry . . . . . . . .  11
   10. Security Considerations . . . . . . . . . . . . . . . . . . .  12
   11. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . .  12
   12. References  . . . . . . . . . . . . . . . . . . . . . . . . .  12
     12.1.  Normative References . . . . . . . . . . . . . . . . . .  12
     12.2.  Informative References . . . . . . . . . . . . . . . . .  13
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  13

1.  Introduction

   The revised Network Management Datastore Architecture (NMDA)
   [RFC8342] introduces a set of new datastores that each hold YANG-
   defined data [RFC7950] and represent a different "viewpoint" on the
   data that is maintained by a server.  New YANG datastores that are
   introduced include <intended>, which contains validated configuration
   data that a client application intends to be in effect, and
   <operational>, which contains at least conceptually operational state
   data (such as statistics) as well as configuration data that is
   actually in effect.

   NMDA introduces in effect a concept of "lifecycle" for management
   data, allowing to clearly distinguish between data that is part of a
   configuration that was supplied by a user, configuration data that
   has actually been successfully applied and that is part of the
   operational state, and overall operational state that includes both
   applied configuration data as well as status and statistics.

   As a result, data from the same management model can be reflected in
   multiple datastores.  Clients need to specify the target datastore to
   be specific about which viewpoint of the data they want to access.
   This way, an application can differentiate whether they are (for
   example) interested in the configuration that has been applied and is