Generalized Network Control Automation YANG Model
draft-bryskin-netconf-automation-yang-03
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Network Working Group                                         I. Bryskin
Internet-Draft                                                 Futurewei
Intended status: Informational                                    X. Liu
Expires: January 6, 2020                                  Volta Networks
                                                                A. Clemm
                                                                  Huawei
                                                             H. Birkholz
                                                          Fraunhofer SIT
                                                                 T. Zhou
                                                                  Huawei
                                                            July 5, 2019

           Generalized Network Control Automation YANG Model
                draft-bryskin-netconf-automation-yang-03

Abstract

   This document describes a YANG data model for the Generalized Network
   Control Automation (GNCA), aimed to define an abstract and uniform
   semantics for NETCONF/YANG scripts in the form of Event-Condition-
   Action (ECA) containers.

Status of This Memo

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   This Internet-Draft will expire on January 6, 2020.

Copyright Notice

   Copyright (c) 2019 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

Bryskin, et al.          Expires January 6, 2020                [Page 1]
Internet-Draft         Network Control Automation              July 2019

   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
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   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Purpose . . . . . . . . . . . . . . . . . . . . . . . . . . .   3
   3.  GNCA concepts and constructs  . . . . . . . . . . . . . . . .   4
     3.1.  Policy Variable (PV)  . . . . . . . . . . . . . . . . . .   4
     3.2.  ECA Event . . . . . . . . . . . . . . . . . . . . . . . .   6
     3.3.  ECA Condition . . . . . . . . . . . . . . . . . . . . . .   7
     3.4.  ECA Action  . . . . . . . . . . . . . . . . . . . . . . .   9
     3.5.  ECA . . . . . . . . . . . . . . . . . . . . . . . . . . .  11
   4.  Where ECA scripts are executed? . . . . . . . . . . . . . . .  12
   5.  ECA script example  . . . . . . . . . . . . . . . . . . . . .  13
   6.  Complete Model Tree Structure . . . . . . . . . . . . . . . .  15
   7.  YANG Module . . . . . . . . . . . . . . . . . . . . . . . . .  21
   8.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  40
   9.  Security Considerations . . . . . . . . . . . . . . . . . . .  40
   10. Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .  40
   11. References  . . . . . . . . . . . . . . . . . . . . . . . . .  41
     11.1.  Normative References . . . . . . . . . . . . . . . . . .  41
     11.2.  Informative References . . . . . . . . . . . . . . . . .  41
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  41

1.  Introduction

   NETCONF/YANG has proved to be very successful in facilitating
   interactive network control paradigm, in which a network control
   application (controller) requests the network server to perform
   certain (re-)configurations, then, retrieves network states of
   interest, then asks for more (re-)configurations and so forth.  This
   said, there are multiple use cases that require stringing network
   configuration requests together with conditioning their order of
   execution based on certain events detected in the network, as well as
   current, historical or predicted network states, and pushing such
   request batches/scripts to the network server in order to control the
   network close loop automation processes.  The Generalized Network
   Control Automation (GNCA) YANG model introduced by this document
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