A YANG Data Model for Routing Policy Management
draft-ietf-rtgwg-policy-model-18
Document Type Active Internet-Draft (rtgwg WG)
Last updated 2020-07-13
Replaces draft-shaikh-rtgwg-policy-model
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RTGWG                                                              Y. Qu
Internet-Draft                                                 Futurewei
Intended status: Standards Track                             J. Tantsura
Expires: January 14, 2021                                         Apstra
                                                               A. Lindem
                                                                   Cisco
                                                                  X. Liu
                                                          Volta Networks
                                                           July 13, 2020

            A YANG Data Model for Routing Policy Management
                    draft-ietf-rtgwg-policy-model-18

Abstract

   This document defines a YANG data model for configuring and managing
   routing policies in a vendor-neutral way and based on actual
   operational practice.  The model provides a generic policy framework
   which can be augmented with protocol-specific policy configuration.

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
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   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 14, 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
   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

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   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
     1.1.  Goals and approach  . . . . . . . . . . . . . . . . . . .   3
   2.  Terminology and Notation  . . . . . . . . . . . . . . . . . .   3
     2.1.  Tree Diagrams . . . . . . . . . . . . . . . . . . . . . .   4
     2.2.  Prefixes in Data Node Names . . . . . . . . . . . . . . .   4
   3.  Model overview  . . . . . . . . . . . . . . . . . . . . . . .   5
   4.  Route policy expression . . . . . . . . . . . . . . . . . . .   5
     4.1.  Defined sets for policy matching  . . . . . . . . . . . .   6
     4.2.  Policy conditions . . . . . . . . . . . . . . . . . . . .   7
     4.3.  Policy actions  . . . . . . . . . . . . . . . . . . . . .   8
     4.4.  Policy subroutines  . . . . . . . . . . . . . . . . . . .   9
   5.  Policy evaluation . . . . . . . . . . . . . . . . . . . . . .  10
   6.  Applying routing policy . . . . . . . . . . . . . . . . . . .  10
   7.  Routing protocol-specific policies  . . . . . . . . . . . . .  11
   8.  Security Considerations . . . . . . . . . . . . . . . . . . .  13
   9.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  14
   10. YANG module . . . . . . . . . . . . . . . . . . . . . . . . .  15
     10.1.  Routing policy model . . . . . . . . . . . . . . . . . .  15
   11. Policy examples . . . . . . . . . . . . . . . . . . . . . . .  36
   12. References  . . . . . . . . . . . . . . . . . . . . . . . . .  38
     12.1.  Normative references . . . . . . . . . . . . . . . . . .  38
     12.2.  Informative references . . . . . . . . . . . . . . . . .  40
   Appendix A.  Acknowledgements . . . . . . . . . . . . . . . . . .  40
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  41

1.  Introduction

   This document describes a YANG [RFC7950] data model for routing
   policy configuration based on operational usage and best practices in
   a variety of service provider networks.  The model is intended to be
   vendor-neutral, in order to allow operators to manage policy
   configuration in a consistent, intuitive way in heterogeneous
   environments with routers supplied by multiple vendors.

   The YANG modules in this document conform to the Network Management
   Datastore Architecture (NMDA) [RFC8342].

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