BIER IPv6 Requirements
draft-ietf-bier-ipv6-requirements-06

Document Type Active Internet-Draft (bier WG)
Last updated 2020-07-28
Replaces draft-mcbride-bier-ipv6-requirements
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Network Working Group                                         M. McBride
Internet-Draft                                                 Futurewei
Intended status: Standards Track                                  J. Xie
Expires: January 29, 2021                                    S. Dhanaraj
                                                                  Huawei
                                                                R. Asati
                                                                   Cisco
                                                                  Y. Zhu
                                                           China Telecom
                                                               G. Mishra
                                                            Verizon Inc.
                                                           July 28, 2020

                         BIER IPv6 Requirements
                  draft-ietf-bier-ipv6-requirements-06

Abstract

   The BIER WG charter includes work on developing "a mechanism to use
   BIER natively in IPv6".  There have been several proposed solutions
   in this area.  But there hasn't been a document which describes the
   problem and lists the requirements.  The goal of this document is to
   describe the BIER IPv6 requirements, summarize the encapsulation
   modes of the proposed solutions, guide the working group in
   understanding the benefits and drawbacks of the various solutions,
   and help in the development of acceptable solutions.

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/.

   Internet-Drafts are draft documents valid for a maximum of six months
   and may be updated, replaced, or obsoleted by other documents at any
   time.  It is inappropriate to use Internet-Drafts as reference
   material or to cite them other than as "work in progress."

   This Internet-Draft will expire on January 29, 2021.

McBride, et al.         Expires January 29, 2021                [Page 1]
Internet-Draft           BIER IPv6 Requirements                July 2020

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
     1.1.  Requirements Language . . . . . . . . . . . . . . . . . .   3
     1.2.  Terminology . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  Problem Statement . . . . . . . . . . . . . . . . . . . . . .   3
   3.  Conceptual Models For BIER IPv6 Encapsulation and Forwarding    4
     3.1.  Transport-Independent Model . . . . . . . . . . . . . . .   5
     3.2.  Native IPv6 Model . . . . . . . . . . . . . . . . . . . .   6
     3.3.  Encapsulation Approaches Considered . . . . . . . . . . .   7
   4.  Requirements  . . . . . . . . . . . . . . . . . . . . . . . .   7
     4.1.  Mandatory Requirements  . . . . . . . . . . . . . . . . .   8
       4.1.1.  L2 Agnostic . . . . . . . . . . . . . . . . . . . . .   8
       4.1.2.  Support BIER architecture . . . . . . . . . . . . . .   8
       4.1.3.  Conform to existing IPv6 Spec . . . . . . . . . . . .   8
       4.1.4.  Support deployment with Non-BFR routers . . . . . . .   8
       4.1.5.  Support inter-AS multicast deployment . . . . . . . .   8
       4.1.6.  Support Simple Encapsulation  . . . . . . . . . . . .   9
       4.1.7.  Support Deployment Security . . . . . . . . . . . . .   9
     4.2.  Optional Requirements . . . . . . . . . . . . . . . . . .   9
       4.2.1.  Support MVPN  . . . . . . . . . . . . . . . . . . . .   9
       4.2.2.  Support OAM . . . . . . . . . . . . . . . . . . . . .   9
       4.2.3.  Support IPSEC . . . . . . . . . . . . . . . . . . . .   9
       4.2.4.  Support Fragmentation . . . . . . . . . . . . . . . .   9
       4.2.5.  Support hardware fast path  . . . . . . . . . . . . .  10
   5.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  10
   6.  Security Considerations . . . . . . . . . . . . . . . . . . .  10
   7.  Acknowledgement . . . . . . . . . . . . . . . . . . . . . . .  10
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