YANG Data Model for Segment Routing
draft-ietf-spring-sr-yang-28

Document Type Active Internet-Draft (spring WG)
Authors Stephane Litkowski  , Yingzhen Qu  , Acee Lindem  , Pushpasis Sarkar  , Jeff Tantsura 
Last updated 2020-11-30 (latest revision 2020-11-28)
Replaces draft-litkowski-spring-sr-yang
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SPRING Working Group                                        S. Litkowski
Internet-Draft                                             Cisco Systems
Intended status: Standards Track                                   Y. Qu
Expires: June 1, 2021                                          Futurewei
                                                               A. Lindem
                                                           Cisco Systems
                                                               P. Sarkar
                                                         Arrcus Networks
                                                             J. Tantsura
                                                                  Apstra
                                                       November 28, 2020

                  YANG Data Model for Segment Routing
                      draft-ietf-spring-sr-yang-28

Abstract

   This document defines a YANG data model for segment routing
   configuration and operation, which is to be augmented by different
   segment routing data planes.  The document also defines a YANG model
   that is intended to be used on network elements to configure or
   operate segment routing MPLS data plane, as well as some generic
   containers to be reused by IGP protocol modules to support segment
   routing.

Status of This Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

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   This Internet-Draft will expire on June 1, 2021.

Copyright Notice

   Copyright (c) 2020 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

Litkowski, et al.         Expires June 1, 2021                  [Page 1]
Internet-Draft                 sr-yang-cfg                 November 2020

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

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Terminology and Notation  . . . . . . . . . . . . . . . . . .   3
     2.1.  Tree diagram  . . . . . . . . . . . . . . . . . . . . . .   3
     2.2.  Prefixes in Data Node Names . . . . . . . . . . . . . . .   3
   3.  Design of the Data Model  . . . . . . . . . . . . . . . . . .   3
   4.  Configuration . . . . . . . . . . . . . . . . . . . . . . . .   6
   5.  IGP Control plane configuration . . . . . . . . . . . . . . .   6
     5.1.  IGP interface configuration . . . . . . . . . . . . . . .   7
       5.1.1.  Adjacency SID properties  . . . . . . . . . . . . . .   7
         5.1.1.1.  Bundling  . . . . . . . . . . . . . . . . . . . .   7
         5.1.1.2.  Protection  . . . . . . . . . . . . . . . . . . .   8
   6.  State Data  . . . . . . . . . . . . . . . . . . . . . . . . .   8
   7.  Notifications . . . . . . . . . . . . . . . . . . . . . . . .   8
   8.  YANG Modules  . . . . . . . . . . . . . . . . . . . . . . . .   8
     8.1.  YANG Module for Segment Routing . . . . . . . . . . . . .   9
     8.2.  YANG Module for Segment Routing Common Types  . . . . . .  10
     8.3.  YANG Module for Segment Routing MPLS  . . . . . . . . . .  16
   9.  Security Considerations . . . . . . . . . . . . . . . . . . .  28
   10. Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .  30
   11. IANA Considerations . . . . . . . . . . . . . . . . . . . . .  30
   12. References  . . . . . . . . . . . . . . . . . . . . . . . . .  31
     12.1.  Normative References . . . . . . . . . . . . . . . . . .  31
     12.2.  Informative References . . . . . . . . . . . . . . . . .  33
   Appendix A.  Configuration examples . . . . . . . . . . . . . . .  33
     A.1.  SR MPLS with IPv4 . . . . . . . . . . . . . . . . . . . .  34
     A.2.  SR MPLS with IPv6 . . . . . . . . . . . . . . . . . . . .  37
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  40

1.  Introduction

   This document defines a YANG data model [RFC7950] for segment routing
   [RFC8402] configuration and operation.  The document also defines a
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