BIER IPv6 Requirements
draft-ietf-bier-ipv6-requirements-00

Document Type Active Internet-Draft (bier WG)
Last updated 2019-05-30
Replaces draft-mcbride-bier-ipv6-requirements
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BIER                                                          M. McBride
Internet-Draft                                                 Futurewei
Intended status: Standards Track                                  J. Xie
Expires: November 30, 2019                                   S. Dhanaraj
                                                                  Huawei
                                                                R. Asati
                                                                   Cisco
                                                            May 29, 2019

                         BIER IPv6 Requirements
                  draft-ietf-bier-ipv6-requirements-00

Abstract

   The BIER WG has a charter item to work on mechanisms which use BIER
   natively in IPv6.  This document is intended to help the WG with this
   effort by specifying requirements for transporting packets, with Bit
   Index Explicit Replication (BIER) headers, in an IPv6 environment.
   There will be a need to send IPv6 payloads, to multiple IPv6
   destinations, using BIER.  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 and summarize the pro's and con's
   of the proposed 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
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   Drafts is at https://datatracker.ietf.org/drafts/current/.

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   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 November 30, 2019.

Copyright Notice

   Copyright (c) 2019 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

McBride, et al.         Expires November 30, 2019               [Page 1]
Internet-Draft           BIER IPv6 Requirements                 May 2019

   This document is subject to BCP 78 and the IETF Trust's Legal
   Provisions Relating to IETF Documents
   (https://trustee.ietf.org/license-info) in effect on the date of
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   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
     1.1.  Requirements Language . . . . . . . . . . . . . . . . . .   3
     1.2.  Terminology . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  Problem Statement . . . . . . . . . . . . . . . . . . . . . .   3
   3.  BIER IPv6 Scenario's  . . . . . . . . . . . . . . . . . . . .   3
     3.1.  BIERv6 for Access Network . . . . . . . . . . . . . . . .   4
     3.2.  BIERv6 for Data Center  . . . . . . . . . . . . . . . . .   4
     3.3.  BIERv6 for Core Networks  . . . . . . . . . . . . . . . .   5
     3.4.  Implications for BIER in SRv6 . . . . . . . . . . . . . .   5
   4.  Requirements  . . . . . . . . . . . . . . . . . . . . . . . .   5
     4.1.  L2 Agnostic . . . . . . . . . . . . . . . . . . . . . . .   5
     4.2.  Hop by hop DA modification  . . . . . . . . . . . . . . .   5
     4.3.  L4 Inspection . . . . . . . . . . . . . . . . . . . . . .   5
     4.4.  Multicast address in SA field . . . . . . . . . . . . . .   5
     4.5.  Incorrect bits  . . . . . . . . . . . . . . . . . . . . .   6
     4.6.  SA filtering  . . . . . . . . . . . . . . . . . . . . . .   6
     4.7.  BIER architecture support . . . . . . . . . . . . . . . .   6
     4.8.  Keep it simple  . . . . . . . . . . . . . . . . . . . . .   6
     4.9.  Hardware fast path  . . . . . . . . . . . . . . . . . . .   6
   5.  Solutions Evaluation  . . . . . . . . . . . . . . . . . . . .   6
     5.1.  BIER-ETH encapsulation in IPv6 networks . . . . . . . . .   6
     5.2.  Encode Bitstring in IPv6 destination address  . . . . . .   8
     5.3.  Add BIER header into IPv6 Extension Header  . . . . . . .   8
     5.4.  Transport BIER as IPv6 payload  . . . . . . . . . . . . .   9
     5.5.  Tunneling BIER in a IPv6 tunnel . . . . . . . . . . . . .  10
   6.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  10
   7.  Security Considerations . . . . . . . . . . . . . . . . . . .  10
   8.  Acknowledgement . . . . . . . . . . . . . . . . . . . . . . .  11
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