YANG Data Model for Network Instances
RFC 8529

Document Type RFC - Proposed Standard (March 2019; No errata)
Last updated 2019-03-06
Replaces draft-rtgyangdt-rtgwg-ni-model
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Stream WG state Submitted to IESG for Publication
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Internet Engineering Task Force (IETF)                         L. Berger
Request for Comments: 8529                                      C. Hopps
Category: Standards Track                        LabN Consulting, L.L.C.
ISSN: 2070-1721                                                A. Lindem
                                                           Cisco Systems
                                                           D. Bogdanovic
                                                                  X. Liu
                                                          Volta Networks
                                                              March 2019

                 YANG Data Model for Network Instances

Abstract

   This document defines a network instance module.  This module can be
   used to manage the virtual resource partitioning that may be present
   on a network device.  Examples of common industry terms for virtual
   resource partitioning are VPN Routing and Forwarding (VRF) instances
   and Virtual Switch Instances (VSIs).

   The YANG data model in this document conforms to the Network
   Management Datastore Architecture (NMDA) defined in RFC 8342.

Status of This Memo

   This is an Internet Standards Track document.

   This document is a product of the Internet Engineering Task Force
   (IETF).  It represents the consensus of the IETF community.  It has
   received public review and has been approved for publication by the
   Internet Engineering Steering Group (IESG).  Further information on
   Internet Standards is available in Section 2 of RFC 7841.

   Information about the current status of this document, any errata,
   and how to provide feedback on it may be obtained at
   https://www.rfc-editor.org/info/rfc8529.

Berger, et al.               Standards Track                    [Page 1]
RFC 8529                        YANG NIs                      March 2019

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
   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  . . . . . . . . . . . . . . . . . . . . . . . .   3
     1.1.  Terminology . . . . . . . . . . . . . . . . . . . . . . .   4
   2.  Overview  . . . . . . . . . . . . . . . . . . . . . . . . . .   4
   3.  Network Instances . . . . . . . . . . . . . . . . . . . . . .   6
     3.1.  NI Types and Mount Points . . . . . . . . . . . . . . . .   7
       3.1.1.  Well-Known Mount Points . . . . . . . . . . . . . . .   8
       3.1.2.  NI Type Example . . . . . . . . . . . . . . . . . . .   9
     3.2.  NIs and Interfaces  . . . . . . . . . . . . . . . . . . .   9
     3.3.  Network Instance Management . . . . . . . . . . . . . . .  11
     3.4.  Network Instance Instantiation  . . . . . . . . . . . . .  14
   4.  Security Considerations . . . . . . . . . . . . . . . . . . .  14
   5.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  15
   6.  Network Instance Model  . . . . . . . . . . . . . . . . . . .  16
   7.  References  . . . . . . . . . . . . . . . . . . . . . . . . .  22
     7.1.  Normative References  . . . . . . . . . . . . . . . . . .  22
     7.2.  Informative References  . . . . . . . . . . . . . . . . .  23
   Appendix A.  Example NI Usage . . . . . . . . . . . . . . . . . .  25
     A.1.  Configuration Data  . . . . . . . . . . . . . . . . . . .  25
     A.2.  State Data - Non-NMDA Version . . . . . . . . . . . . . .  28
     A.3.  State Data - NMDA Version . . . . . . . . . . . . . . . .  35
   Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . . .  44
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  44

Berger, et al.               Standards Track                    [Page 2]
RFC 8529                        YANG NIs                      March 2019

1.  Introduction

   This document defines the second of two new modules that are defined
   to support the configuration and operation of network devices that
   allow for the partitioning of resources from both, or either,
   management and networking perspectives.  Both leverage the YANG
   functionality enabled by YANG Schema Mount [RFC8528].

   The YANG data model in this document conforms to the Network
   Management Datastore Architecture defined in [RFC8342].

   The first form of resource partitioning provides a logical
   partitioning of a network device where each partition is separately
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