YANG Data Model for SR and SR TE Topologies on MPLS Data Plane
draft-ietf-teas-yang-sr-te-topo-09
Document Type Active Internet-Draft (teas WG)
Authors Xufeng Liu  , Igor Bryskin  , Vishnu Beeram  , Tarek Saad  , Himanshu Shah  , Stephane Litkowski 
Last updated 2021-02-22
Replaces draft-liu-teas-yang-sr-te-topo
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Network Working Group                                             X. Liu
Internet-Draft                                            Volta Networks
Intended status: Standards Track                              I. Bryskin
Expires: August 26, 2021                                      Individual
                                                               V. Beeram
                                                                 T. Saad
                                                        Juniper Networks
                                                                 H. Shah
                                                                   Ciena
                                                            S. Litkowski
                                                                   Cisco
                                                       February 22, 2021

     YANG Data Model for SR and SR TE Topologies on MPLS Data Plane
                   draft-ietf-teas-yang-sr-te-topo-09

Abstract

   This document defines a YANG data model for Segment Routing (SR)
   topology and Segment Routing (SR) traffic engineering (TE) topology,
   using MPLS data plane.

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   (https://trustee.ietf.org/license-info) in effect on the date of

Liu, et al.              Expires August 26, 2021                [Page 1]
Internet-Draft            YANG SR MPLS Topology            February 2021

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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
     1.1.  Terminology . . . . . . . . . . . . . . . . . . . . . . .   2
     1.2.  Tree Diagrams . . . . . . . . . . . . . . . . . . . . . .   3
     1.3.  Prefixes in Data Node Names . . . . . . . . . . . . . . .   3
   2.  Modeling Considerations . . . . . . . . . . . . . . . . . . .   3
     2.1.  Segment Routing (SR) MPLS Topology  . . . . . . . . . . .   3
     2.2.  Segment Routing (SR) MPLS TE Topology . . . . . . . . . .   4
     2.3.  Relations to ietf-segment-routing . . . . . . . . . . . .   7
     2.4.  Topology Type Modeling  . . . . . . . . . . . . . . . . .   7
     2.5.  Topology Attributes . . . . . . . . . . . . . . . . . . .   7
     2.6.  Node Attributes . . . . . . . . . . . . . . . . . . . . .   7
     2.7.  Link Attributes . . . . . . . . . . . . . . . . . . . . .   8
   3.  Model Structure . . . . . . . . . . . . . . . . . . . . . . .   9
   4.  YANG Module . . . . . . . . . . . . . . . . . . . . . . . . .  11
   5.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  20
   6.  Security Considerations . . . . . . . . . . . . . . . . . . .  21
   7.  References  . . . . . . . . . . . . . . . . . . . . . . . . .  22
     7.1.  Normative References  . . . . . . . . . . . . . . . . . .  22
     7.2.  Informative References  . . . . . . . . . . . . . . . . .  24
   Appendix A.  Companion YANG Model for Non-NMDA Compliant
                Implementations  . . . . . . . . . . . . . . . . . .  26
     A.1.  SR MPLS Topology State Module . . . . . . . . . . . . . .  26
   Appendix B.  Data Tree Example  . . . . . . . . . . . . . . . . .  29
   Appendix C.  Contributors . . . . . . . . . . . . . . . . . . . .  36
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  36

1.  Introduction

   This document defines a YANG [RFC7950] data model for describing the
   presentations of Segment Routing (SR) topology and Segment Routing
   (SR) traffic engineering (TE) topology.  The version of the model
   limits the transport type to an MPLS dataplane.

1.1.  Terminology

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "SHOULD", "SHOULD NOT", "RECOMMENDED", "NOT RECOMMENDED", "MAY", and
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