SRv6 NET-PGM extension: Insertion
draft-filsfils-spring-srv6-net-pgm-insertion-03

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Last updated 2020-07-13
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SPRING                                                  C. Filsfils, Ed.
Internet-Draft                                         P. Camarillo, Ed.
Intended status: Standards Track                     Cisco Systems, Inc.
Expires: January 14, 2021                                       J. Leddy
                                                  Individual Contributor
                                                                D. Voyer
                                                             Bell Canada
                                                           S. Matsushima
                                                                SoftBank
                                                                   Z. Li
                                                     Huawei Technologies
                                                           July 13, 2020

                   SRv6 NET-PGM extension: Insertion
            draft-filsfils-spring-srv6-net-pgm-insertion-03

Abstract

   Traffic traversing an SR domain is encapsulated in an outer IPv6
   header for its journey through the SR domain.

   To implement transport services strictly within the SR domain, the SR
   domain may require insertion or deletion of an SRH after the outer
   IPv6 header of the SR domain.  Any segment within the SRH is strictly
   contained within the SR domain.

   This document extends SRv6 Network Programming
   [I-D.ietf-spring-srv6-network-programming] with new SR endpoint and
   transit behaviors to be performed only within the SR domain in any
   packet owned by the domain.

Requirements Language

   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
   14 [RFC2119] [RFC8174] when, and only when, they appear in all
   capitals, as shown here.

Status of This Memo

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

   Internet-Drafts are working documents of the Internet Engineering
   Task Force (IETF).  Note that other groups may also distribute

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Internet-Draft      SRv6 NET-PGM extension: Insertion          July 2020

   working documents as Internet-Drafts.  The list of current Internet-
   Drafts is at https://datatracker.ietf.org/drafts/current/.

   Internet-Drafts are draft documents valid for a maximum of six months
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   This Internet-Draft will expire on January 14, 2021.

Copyright Notice

   Copyright (c) 2020 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
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   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  SRv6 endpoint behaviors . . . . . . . . . . . . . . . . . . .   3
     2.1.  End.B6.Insert: Endpoint bound to an SRv6 policy . . . . .   3
     2.2.  End.B6.Insert.Red: [...] with reduced SRH . . . . . . . .   4
   3.  SR Policy Headend Behaviors . . . . . . . . . . . . . . . . .   5
     3.1.  H.Insert: SR Headend with insertion of an SRv6 Policy . .   5
     3.2.  H.Insert.Red: H.Insert with reduced insertion . . . . . .   5
   4.  Maximum H.Insert MSD Type . . . . . . . . . . . . . . . . . .   6
   5.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   6
     5.1.  SRv6 Endpoint Behaviors . . . . . . . . . . . . . . . . .   6
     5.2.  MSD Types . . . . . . . . . . . . . . . . . . . . . . . .   6
   6.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .   7
   7.  Contributors  . . . . . . . . . . . . . . . . . . . . . . . .   7
   8.  References  . . . . . . . . . . . . . . . . . . . . . . . . .  10
     8.1.  Normative References  . . . . . . . . . . . . . . . . . .  10
     8.2.  Informative References  . . . . . . . . . . . . . . . . .  10
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  11

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1.  Introduction

   Packets transiting an SR Domain may be steered into an SR Policy for
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