The Per-Path Service Instruction (PPSI) Option
draft-bonica-6man-vpn-dest-opt-08

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6man                                                           R. Bonica
Internet-Draft                                          Juniper Networks
Intended status: Standards Track                               Y. Kamite
Expires: May 23, 2020                     NTT Communications Corporation
                                                                L. Jalil
                                                               C. Lenart
                                                                 Verizon
                                                                   N. So
                                                                   F. Xu
                                                            Reliance Jio
                                                             G. Presbury
                                                  Hughes Network Systems
                                                                 G. Chen
                                                                   Baidu
                                                                  Y. Zhu
                                                           China Telecom
                                                                 Y. Zhou
                                                               ByteDance
                                                       November 20, 2019

             The Per-Path Service Instruction (PPSI) Option
                   draft-bonica-6man-vpn-dest-opt-08

Abstract

   SRm6 encodes Per-Path Service Instructions (PPSI) in a new IPv6
   option, called the PPSI Option.  This document describes the PPSI
   Option.

Status of This Memo

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   provisions of BCP 78 and BCP 79.

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   This Internet-Draft will expire on May 23, 2020.

Bonica, et al.            Expires May 23, 2020                  [Page 1]
Internet-Draft      Per-Path Service Instruction Opt       November 2019

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   document authors.  All rights reserved.

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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Requirements Language . . . . . . . . . . . . . . . . . . . .   3
   3.  PPSI Identifiers  . . . . . . . . . . . . . . . . . . . . . .   3
   4.  The PPSI Option . . . . . . . . . . . . . . . . . . . . . . .   3
   5.  Destination Option Header Considerations  . . . . . . . . . .   4
   6.  ICMPv6 Considerations . . . . . . . . . . . . . . . . . . . .   4
   7.  Security Considerations . . . . . . . . . . . . . . . . . . .   5
   8.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   5
   9.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .   5
   10. References  . . . . . . . . . . . . . . . . . . . . . . . . .   5
     10.1.  Normative References . . . . . . . . . . . . . . . . . .   5
     10.2.  Informative References . . . . . . . . . . . . . . . . .   6
   Appendix A.  Virtual Private Networks (VPN) . . . . . . . . . . .   7
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .   9

1.  Introduction

   An SRm6 [I-D.bonica-spring-srv6-plus] path provides unidirectional
   connectivity from its ingress node to its egress node.  While an SRm6
   path can follow the least cost path from ingress to egress, it can
   also follow any other path.

   SRm6 paths are encoded as IPv6 [RFC8200] header chains.  When an SRm6
   ingress node receives a packet, it encapsulates the packet in an IPv6
   header chain.  It then forwards the encapsulated packet to the path's
   egress node.  When the egress node receives the packet, it processes
   the SRm6 payload (i.e., the original packet).

   SRm6 paths are programmable.  They support several instruction types,
   including Per-Path Service Instructions (PPSI).  PPSIs determine how
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