Bulk Subscription to YANG Event Notification
draft-wang-netconf-bulk-subscribed-notifications-02

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Last updated 2020-07-03
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- Yang impact analysis for draft-wang-netconf-bulk-subscribed-notifications
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NETCONF Working Group                                            Z. Wang
Internet-Draft                                                     Q. Wu
Intended status: Standards Track                                  Huawei
Expires: January 4, 2021                                          P. Liu
                                                                  H. Cai
                                                            China Mobile
                                                            July 3, 2020

              Bulk Subscription to YANG Event Notification
          draft-wang-netconf-bulk-subscribed-notifications-02

Abstract

   This document defines a YANG data model and associated mechanism that
   allows subscriber applications to bulk subscribe to publishers' event
   streams based on bundle group information such as bundle size and
   bundle latency.  This allows the publishers to report multiple
   notifications in a single bundling message.

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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   This Internet-Draft will expire on January 4, 2021.

Copyright Notice

   Copyright (c) 2020 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
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Wang, et al.             Expires January 4, 2021                [Page 1]
Internet-Draft              Bulk Subscription                  July 2020

   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  . . . . . . . . . . . . . . . . . . . . . . . .   2
     1.1.  Terminology . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  Model Overview  . . . . . . . . . . . . . . . . . . . . . . .   4
   3.  Bulk Subscription YANG Module . . . . . . . . . . . . . . . .   5
   4.  Bulk Notification YANG Module . . . . . . . . . . . . . . . .   9
   5.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  10
     5.1.  Updates to the IETF XML Registry  . . . . . . . . . . . .  10
     5.2.  Updates to the YANG Module Names Registry . . . . . . . .  10
   6.  Security Considerations . . . . . . . . . . . . . . . . . . .  11
   7.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .  11
   8.  References  . . . . . . . . . . . . . . . . . . . . . . . . .  12
     8.1.  Normative References  . . . . . . . . . . . . . . . . . .  12
     8.2.  Informative References  . . . . . . . . . . . . . . . . .  13
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  13

1.  Introduction

   Subscription to YANG Notifications for Datastore Updates [RFC8641]
   uses a "target" object in subscription protocol operation for
   identifying the targeted source of information against which the
   subscription is applied and supports multiple subscriptions on a
   single transport session.  Notification Message Headers and Bundles
   [I-D.ietf-netconf-notification-messages] allows multiple
   notifications bundled into one transportable message.  However the
   subscription protocol operation doesn't provide specific criteria to
   classify subscriptions and therefore lacks the capability to
   explicitly indicate which specific subscription associated with the
   notification should be bundled together, e.g., subscription A and B
   are bundled based on their relationship with a set of YANG data
   models while subscription C and D are bundled based on "transport"
   and "encoding" parameters,both bundled groups are transported in the
   same transport session.  A bundle size, bundle latency associated
   with a set of subscriptions or YANG data models enables the ability
   to perform encapsulation operation on a set of subscriptions with
   common characteristics via a single transaction.  The bundle size and
   bundle latency provides a more optimal mechanism for notification
   encapsulation which would otherwise require multiple atomic
   transactions on a per subscription (i.e., one message per
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