YANG Data Model for SR and SR TE Topologies
draft-ietf-teas-yang-sr-te-topo-03
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Network Working Group                                             X. Liu
Internet-Draft                                            Volta Networks
Intended status: Standards Track                              I. Bryskin
Expires: April 25, 2019                              Huawei Technologies
                                                               V. Beeram
                                                        Juniper Networks
                                                                 T. Saad
                                                       Cisco Systems Inc
                                                                 H. Shah
                                                                   Ciena
                                                            S. Litkowski
                                                 Orange Business Service
                                                        October 22, 2018

              YANG Data Model for SR and SR TE Topologies
                   draft-ietf-teas-yang-sr-te-topo-03

Abstract

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

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

Liu, et al.              Expires April 25, 2019                 [Page 1]
Internet-Draft             YANG SR TE Topology              October 2018

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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
     1.1.  Terminology . . . . . . . . . . . . . . . . . . . . . . .   2
     1.2.  Tree Diagrams . . . . . . . . . . . . . . . . . . . . . .   3
   2.  Modeling Considerations . . . . . . . . . . . . . . . . . . .   3
     2.1.  Segment Routing (SR) Topology . . . . . . . . . . . . . .   3
     2.2.  Segment Routing (SR) TE Topology  . . . . . . . . . . . .   3
     2.3.  Relations to ietf-segment-routing . . . . . . . . . . . .   4
     2.4.  Topology Type Modeling  . . . . . . . . . . . . . . . . .   5
     2.5.  Topology Attributes . . . . . . . . . . . . . . . . . . .   5
     2.6.  Node Attributes . . . . . . . . . . . . . . . . . . . . .   5
     2.7.  Link Attributes . . . . . . . . . . . . . . . . . . . . .   6
   3.  Model Structure . . . . . . . . . . . . . . . . . . . . . . .   7
   4.  YANG Module . . . . . . . . . . . . . . . . . . . . . . . . .   8
   5.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  16
   6.  Security Considerations . . . . . . . . . . . . . . . . . . .  16
   7.  References  . . . . . . . . . . . . . . . . . . . . . . . . .  18
     7.1.  Normative References  . . . . . . . . . . . . . . . . . .  18
     7.2.  Informative References  . . . . . . . . . . . . . . . . .  19
   Appendix A.  Companion YANG Model for Non-NMDA Compliant
                Implementations  . . . . . . . . . . . . . . . . . .  20
     A.1.  SR Topology State Module  . . . . . . . . . . . . . . . .  20
   Appendix B.  Data Tree Example  . . . . . . . . . . . . . . . . .  23
   Appendix C.  Contributors . . . . . . . . . . . . . . . . . . . .  30
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  30

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
   "OPTIONAL" in this document are to be interpreted as described in BCP
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