Subscribing to YANG datastore push updates
draft-ietf-netconf-yang-push-01

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Network Working Group                                           A. Clemm
Internet-Draft                                        A. Gonzalez Prieto
Intended status: Standards Track                                 E. Voit
Expires: August 26, 2016                                     A. Tripathy
                                                       E. Nilsen-Nygaard
                                                           Cisco Systems
                                                       February 23, 2016

               Subscribing to YANG datastore push updates
                  draft-ietf-netconf-yang-push-01.txt

Abstract

   This document defines a subscription and push mechanism for YANG
   datastores.  This mechanism allows client applications to request
   updates from a YANG datastore, which are then pushed by the server to
   a receiver per a subscription policy, without requiring additional
   client requests.

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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   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 August 26, 2016.

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Clemm, et al.            Expires August 26, 2016                [Page 1]
Internet-Draft               Datastore-Push                February 2016

   include Simplified BSD License text as described in Section 4.e of
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   This document may contain material from IETF Documents or IETF
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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  Definitions and Acronyms  . . . . . . . . . . . . . . . . . .   5
   3.  Solution Overview . . . . . . . . . . . . . . . . . . . . . .   7
     3.1.  Subscription Model  . . . . . . . . . . . . . . . . . . .   8
     3.2.  Negotiation of Subscription Policies  . . . . . . . . . .  10
     3.3.  On-Change Considerations  . . . . . . . . . . . . . . . .  11
     3.4.  Data Encodings  . . . . . . . . . . . . . . . . . . . . .  12
       3.4.1.  Periodic Subscriptions  . . . . . . . . . . . . . . .  12
       3.4.2.  On-Change Subscriptions . . . . . . . . . . . . . . .  12
     3.5.  Subscription Filters  . . . . . . . . . . . . . . . . . .  13
     3.6.  Push Data Stream and Transport Mapping  . . . . . . . . .  13
     3.7.  Subscription management . . . . . . . . . . . . . . . . .  18
       3.7.1.  Subscription management by RPC  . . . . . . . . . . .  18
       3.7.2.  Subscription management by configuration  . . . . . .  20
     3.8.  Other considerations  . . . . . . . . . . . . . . . . . .  20
       3.8.1.  Authorization . . . . . . . . . . . . . . . . . . . .  20
       3.8.2.  Additional subscription primitives  . . . . . . . . .  21
       3.8.3.  Robustness and reliability considerations . . . . . .  21
       3.8.4.  Update size and fragmentation considerations  . . . .  22
       3.8.5.  Push data streams . . . . . . . . . . . . . . . . . .  22
       3.8.6.  Implementation considerations . . . . . . . . . . . .  23
   4.  A YANG data model for management of datastore push
       subscriptions . . . . . . . . . . . . . . . . . . . . . . . .  23
     4.1.  Overview  . . . . . . . . . . . . . . . . . . . . . . . .  23
     4.2.  Update streams  . . . . . . . . . . . . . . . . . . . . .  25