Generalized Network Control Automation YANG Model
draft-bryskin-netconf-automation-yang-01

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Network Working Group                                         I. Bryskin
Internet-Draft                                       Huawei Technologies
Intended status: Informational                                    X. Liu
Expires: September 1, 2018                                         Jabil
                                                                A. Clemm
                                                                  Huawei
                                                             H. Birkholz
                                                          Fraunhofer SIT
                                                                 T. Zhou
                                                                  Huawei
                                                       February 28, 2018

           Generalized Network Control Automation YANG Model
                draft-bryskin-netconf-automation-yang-01

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

   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 September 1, 2018.

Copyright Notice

   Copyright (c) 2018 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
   (http://trustee.ietf.org/license-info) in effect on the date of

Bryskin, et al.         Expires September 1, 2018               [Page 1]
Internet-Draft         Network Control Automation          February 2018

   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.  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 . . . . . . . . . . . . . . . . . . . . .  36
   9.  Security Considerations . . . . . . . . . . . . . . . . . . .  36
   10. Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .  36
   11. References  . . . . . . . . . . . . . . . . . . . . . . . . .  36
     11.1.  Normative References . . . . . . . . . . . . . . . . . .  36
     11.2.  Informative References . . . . . . . . . . . . . . . . .  37
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  37

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