Bulk Subscription to YANG Event Notification
draft-wang-netconf-bulk-subscribed-notifications-01

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Last updated 2020-03-03
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NETCONF Working Group                                            Z. Wang
Internet-Draft                                                     Q. Wu
Intended status: Standards Track                                  Huawei
Expires: September 4, 2020                                        P. Liu
                                                                  H. Cai
                                                            China Mobile
                                                           March 3, 2020

              Bulk Subscription to YANG Event Notification
          draft-wang-netconf-bulk-subscribed-notifications-01

Abstract

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

Status of This Memo

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   This Internet-Draft will expire on September 4, 2020.

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   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 September 4, 2020               [Page 1]
Internet-Draft              Bulk Subscription                 March 2020

   the Trust Legal Provisions and are provided without warranty as
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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 . . . . . . . . . . . . . . . .   8
   5.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   9
     5.1.  Updates to the IETF XML Registry  . . . . . . . . . . . .   9
     5.2.  Updates to the YANG Module Names Registry . . . . . . . .  10
   6.  Security Considerations . . . . . . . . . . . . . . . . . . .  10
   7.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .  11
   8.  References  . . . . . . . . . . . . . . . . . . . . . . . . .  11
     8.1.  Normative References  . . . . . . . . . . . . . . . . . .  11
     8.2.  Informative References  . . . . . . . . . . . . . . . . .  12
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  12

1.  Introduction

   The Subscription to YANG Notifications specification [RFC8639] uses a
   "stream" name in subscription protocol operation for identifying the
   targeted event stream 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
   group identifier 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 group identifier provides a more optimal mechanism
   for notification encapsulation which would otherwise require multiple
   atomic transactions on a per subscription (i.e., one message per
   notification) basis.  Following are some of the use-cases where such
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