YANG Data Model for SR Service Programming
draft-jags-spring-sr-service-programming-yang-00

Document Type Active Internet-Draft (individual)
Authors Jaganbabu Rajamanickam  , Kamran Raza  , daniel.bernier@bell.ca 
Last updated 2020-11-02
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SPRING Working Group                                     J. Rajamanickam
Internet-Draft                                                   K. Raza
Intended status: Standards Track                           Cisco Systems
Expires: May 6, 2021                                          
                                                              D. Bernier
                                                             Bell Canada

                                                        November 2, 2020

               YANG Data Model for SR Service Programming
            draft-jags-spring-sr-service-programming-yang-00

Abstract

   This document describes a YANG data model for Segment Routing (SR)
   Service Programming.  The model serves as a base framework for
   configuring and managing an SR based service programming.
   Additionally, this document specifies the model for a Service Proxy
   for SR-unaware services.

   The YANG modules in this document conform to the Network Management
   Datastore Architecture (NMDA).

Status of This Memo

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   This Internet-Draft will expire on May 6, 2021.

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Internet-Draft YANG Data Model for SR Service Programming  November 2020

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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Specification of Requirements . . . . . . . . . . . . . . . .   3
   3.  YANG Model  . . . . . . . . . . . . . . . . . . . . . . . . .   4
     3.1.  Overview  . . . . . . . . . . . . . . . . . . . . . . . .   4
     3.2.  Service Function Types  . . . . . . . . . . . . . . . . .   4
     3.3.  SR Service Programming Types  . . . . . . . . . . . . . .   5
     3.4.  SR Service Programming Base . . . . . . . . . . . . . . .   5
       3.4.1.  Configuration . . . . . . . . . . . . . . . . . . . .   5
       3.4.2.  Operational State . . . . . . . . . . . . . . . . . .   6
       3.4.3.  Notification  . . . . . . . . . . . . . . . . . . . .   7
     3.5.  SR Service Proxy  . . . . . . . . . . . . . . . . . . . .   7
       3.5.1.  Static Proxy  . . . . . . . . . . . . . . . . . . . .   8
       3.5.2.  Dynamic Proxy . . . . . . . . . . . . . . . . . . . .   9
       3.5.3.  Masquerading Proxy  . . . . . . . . . . . . . . . . .  10
   4.  YANG Specification  . . . . . . . . . . . . . . . . . . . . .  11
     4.1.  Service Types . . . . . . . . . . . . . . . . . . . . . .  11
     4.2.  SR Service Programming Types  . . . . . . . . . . . . . .  13
     4.3.  SR Service Programming Base . . . . . . . . . . . . . . .  17
     4.4.  SR Service Proxy  . . . . . . . . . . . . . . . . . . . .  23
   5.  Security Considerations . . . . . . . . . . . . . . . . . . .  28
   6.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  29
   7.  Acknowledgments . . . . . . . . . . . . . . . . . . . . . . .  30
   8.  Normative References  . . . . . . . . . . . . . . . . . . . .  30
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  32

1.  Introduction

   The Network Configuration Protocol (NETCONF) [RFC6241] is one of the
   network management protocols that defines mechanisms to manage
   network devices.  YANG [RFC6020] is a modular language that
   represents data structures in an XML tree format, and is used as a
   data modeling language for the NETCONF.

   Segment Routing is an architecture based on the source routing
   paradigm that seeks the right balance between distributed
   intelligence and centralized programmability.  SR can be used with an
   MPLS or an IPv6 data plane to steer packets through an ordered list
   of instructions, called segments.  These segments may encode simple
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