Insertion of IPv6 Segment Routing Headers in a Controlled Domain
draft-voyer-6man-extension-header-insertion-06

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Network Working Group                                      D. Voyer, Ed.
Internet-Draft                                               Bell Canada
Intended status: Informational                                  J. Leddy
Expires: January 9, 2020                          Individual Contributor
                                                             C. Filsfils
                                                           D. Dukes, Ed.
                                                     Cisco Systems, Inc.
                                                              S. Previdi
                                                  Individual Contributor
                                                           S. Matsushima
                                                                Softbank
                                                            July 8, 2019

    Insertion of IPv6 Segment Routing Headers in a Controlled Domain
             draft-voyer-6man-extension-header-insertion-06

Abstract

   The network operator and vendor community has clearly indicated that
   IPv6 header insertion is useful and required.  This is notably the
   case when the entire journey of the packet remains in its source
   domain.  In such a context, it does not matter where the extension
   header is inserted.  The source domain may decide to place the IPv6
   extension header insertion where it suits its best: at the source of
   the packet or at any midpoint within the source domain.

Requirements Language

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
   document are to be interpreted as described in RFC 2119 [RFC2119].

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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   Drafts is at https://datatracker.ietf.org/drafts/current/.

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Voyer, et al.            Expires January 9, 2020                [Page 1]
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   This Internet-Draft will expire on January 9, 2020.

Copyright Notice

   Copyright (c) 2019 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  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Source Domain and Packet Journey  . . . . . . . . . . . . . .   3
   3.  Transit Through a Source Domain . . . . . . . . . . . . . . .   4
   4.  Impact of SRH Insertion Within a Source Domain  . . . . . . .   5
     4.1.  ICMP Error message processing . . . . . . . . . . . . . .   5
       4.1.1.  ICMP Error message processing with routing header . .   5
     4.2.  Destination outside the Source Domain . . . . . . . . . .   6
   5.  Security Considerations . . . . . . . . . . . . . . . . . . .   6
   6.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   6
   7.  Manageability Considerations  . . . . . . . . . . . . . . . .   6
   8.  Contributors  . . . . . . . . . . . . . . . . . . . . . . . .   6
   9.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .   7
   10. References  . . . . . . . . . . . . . . . . . . . . . . . . .   7
     10.1.  Normative References . . . . . . . . . . . . . . . . . .   7
     10.2.  Informative References . . . . . . . . . . . . . . . . .   7
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .   8

1.  Introduction

   We define the concept of "domain" as the set of nodes under the same
   administration.  For example, a network operator infrastructure
   including routers and links grouped into BGP autonomous systems (ASs)
   and routing domains (running OSFP or IS-IS).

   We define "source domain" as the domain of the source of the packet.

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