RFC 8641 - Subscription to YANG Notifications for Datastore Updates

Internet Engineering Task Force (IETF)                          A. Clemm
Request for Comments: 8641                                     Futurewei
Category: Standards Track                                        E. Voit
ISSN: 2070-1721                                            Cisco Systems
                                                          September 2019

        Subscription to YANG Notifications for Datastore Updates

Abstract

   This document describes a mechanism that allows subscriber
   applications to request a continuous and customized stream of updates
   from a YANG datastore.  Providing such visibility into updates
   enables new capabilities based on the remote mirroring and monitoring
   of configuration and operational state.

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/rfc8641.

Clemm & Voit                 Standards Track                    [Page 1]
RFC 8641                        YANG-Push                 September 2019

Copyright Notice

   Copyright (c) 2019 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

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   not be created outside the IETF Standards Process, except to format
   it for publication as an RFC or to translate it into languages other
   than English.

Clemm & Voit                 Standards Track                    [Page 2]
RFC 8641                        YANG-Push                 September 2019

Table of Contents

   1. Introduction ....................................................4
   2. Definitions .....................................................4
   3. Solution Overview ...............................................6
      3.1. Subscription Model .........................................6
      3.2. Negotiation of Subscription Policies .......................7
      3.3. On-Change Considerations ...................................8
      3.4. Reliability Considerations .................................9
      3.5. Data Encodings ............................................10
      3.6. Defining the Selection with a Datastore ...................11
      3.7. Streaming Updates .........................................12
      3.8. Subscription Management ...................................15
      3.9. Receiver Authorization ....................................16
      3.10. On-Change Notifiable Datastore Nodes .....................18
      3.11. Other Considerations .....................................18
   4. A YANG Data Model for Management of Datastore Push
      Subscriptions ..................................................20
      4.1. Overview ..................................................20
      4.2. Subscription Configuration ................................27
      4.3. YANG Notifications ........................................28
      4.4. YANG RPCs .................................................29
   5. YANG Module for YANG-Push ......................................34
   6. IANA Considerations ............................................51
   7. Security Considerations ........................................51
   8. References .....................................................53
      8.1. Normative References ......................................53
      8.2. Informative References ....................................55

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Subscription to YANG Notifications for Datastore UpdatesRFC 8641

Subscription to YANG Notifications for Datastore Updates
RFC 8641