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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   Internet-Drafts are draft documents valid for a maximum of six months
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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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   document authors.  All rights reserved.

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

   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