A YANG Data Model for Layer 2 Network Topologies
draft-ietf-i2rs-yang-l2-network-topology-15

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Replaces draft-dong-i2rs-l2-network-topology
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Network Working Group                                            J. Dong
Internet-Draft                                                    X. Wei
Intended status: Standards Track                                   Q. Wu
Expires: January 13, 2021                                         Huawei
                                                            M. Boucadair
                                                                  Orange
                                                                  A. Liu
                                                                  Tecent
                                                           July 12, 2020

            A YANG Data Model for Layer 2 Network Topologies
              draft-ietf-i2rs-yang-l2-network-topology-15

Abstract

   This document defines a YANG data model for Layer 2 network
   topologies.  In particular, this data model augments the generic
   network and network topology data models with Layer 2 specific
   topology attributes.

Editorial Note (To be removed by RFC Editor)

   Please update these statements within the document with the RFC
   number to be assigned to this document:

   o  "This version of this YANG module is part of RFC XXXX;"

   o  "RFC XXXX: A YANG Data Model for Layer 2 Network Topologies";

   o  reference: RFC XXXX

   Please update the "revision" date of the YANG module.

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
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   material or to cite them other than as "work in progress."

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   This Internet-Draft will expire on January 13, 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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   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.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   3
   3.  Layer 2 Topology Model  . . . . . . . . . . . . . . . . . . .   3
   4.  Layer 2 Topology YANG Module  . . . . . . . . . . . . . . . .   7
   5.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  21
   6.  Security Considerations . . . . . . . . . . . . . . . . . . .  21
   7.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .  23
   8.  References  . . . . . . . . . . . . . . . . . . . . . . . . .  23
     8.1.  Normative References  . . . . . . . . . . . . . . . . . .  23
     8.2.  Informative References  . . . . . . . . . . . . . . . . .  24
   Appendix A.  Companion YANG Module for Non-NMDA Compliant
                Implementations  . . . . . . . . . . . . . . . . . .  25
   Appendix B.  An Example . . . . . . . . . . . . . . . . . . . . .  30
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  34

1.  Introduction

   [RFC8345] defines the YANG [RFC6020] [RFC7950] data models of the
   abstract (generic) network and network topology.  Such models can be
   augmented with technology-specific details to build more specific
   topology models.

   This document defines the YANG data model for Layer 2 (L2) network
   topologies by augmenting the generic network (Section 6.1 of
   [RFC8345]) and network topology (Section 6.2 of [RFC8345]) data
   models with L2-specific topology attributes.  An example is provided
   in Appendix B.

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   There are multiple applications for such a data model.  For example,
   within the context of Interface to the Routing System (I2RS), nodes
   within the network can use the data model to capture their
   understanding of the overall network topology and expose it to a
   network controller.  A network controller can then use the
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