Subscription to Distributed Notifications
draft-unyte-netconf-distributed-notif-00
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Last updated 2020-08-10 (latest revision 2020-07-10)
Replaces draft-zhou-netconf-multi-stream-originators
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NETCONF                                                          T. Zhou
Internet-Draft                                                  G. Zheng
Intended status: Standards Track                                  Huawei
Expires: January 11, 2021                                        E. Voit
                                                           Cisco Systems
                                                                 T. Graf
                                                                Swisscom
                                                             P. Francois
                                                               INSA-Lyon
                                                           July 10, 2020

               Subscription to Distributed Notifications
                draft-unyte-netconf-distributed-notif-00

Abstract

   This documents describes extensions to the YANG notifications
   subscription to allow metrics being published directly from
   processors on line cards to target receivers, while subscription is
   still maintained at the route processor in a distributed forwarding
   system.

Requirements Language

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
   document are to be interpreted as described in RFC 2119 [RFC2119].

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
   Task Force (IETF).  Note that other groups may also distribute
   working documents as Internet-Drafts.  The list of current Internet-
   Drafts is at https://datatracker.ietf.org/drafts/current/.

   Internet-Drafts are draft documents valid for a maximum of six months
   and may be updated, replaced, or obsoleted by other documents at any
   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 January 11, 2021.

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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
   Provisions Relating to IETF Documents
   (https://trustee.ietf.org/license-info) in effect on the date of
   publication of this document.  Please review these documents
   carefully, as they describe your rights and restrictions with respect
   to this document.  Code Components extracted from this document must
   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
   2.  Terminologies . . . . . . . . . . . . . . . . . . . . . . . .   3
   3.  Solution Overview . . . . . . . . . . . . . . . . . . . . . .   4
   4.  Subscription Decomposition  . . . . . . . . . . . . . . . . .   6
   5.  Publication Composition . . . . . . . . . . . . . . . . . . .   6
   6.  Subscription State Change Notifications . . . . . . . . . . .   7
   7.  Publisher Configurations  . . . . . . . . . . . . . . . . . .   7
   8.  YANG Tree . . . . . . . . . . . . . . . . . . . . . . . . . .   7
   9.  YANG Module . . . . . . . . . . . . . . . . . . . . . . . . .   7
   10. IANA Considerations . . . . . . . . . . . . . . . . . . . . .   9
   11. Security Considerations . . . . . . . . . . . . . . . . . . .  10
   12. Contributors  . . . . . . . . . . . . . . . . . . . . . . . .  11
   13. Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .  11
   14. References  . . . . . . . . . . . . . . . . . . . . . . . . .  11
     14.1.  Normative References . . . . . . . . . . . . . . . . . .  11
     14.2.  Informative References . . . . . . . . . . . . . . . . .  12
   Appendix A.  Examples . . . . . . . . . . . . . . . . . . . . . .  12
     A.1.  Dynamic Subscription  . . . . . . . . . . . . . . . . . .  12
     A.2.  Configured Subscription . . . . . . . . . . . . . . . . .  16
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  18

1.  Introduction

   The mechanism to support a subscription to a continuous and
   customized stream of updates from a YANG datastore is defined in
   [RFC8639] and [RFC8641].  Requirements for Subscription to YANG
   Datastores are defined in [RFC7923]

   By streaming data from publishers to receivers, much better
   performance and fine-grained sampling can be achieved than with
   polling.  In a distributed forwarding system, the packet forwarding

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