Encapsulation for BIER in Non-MPLS IPv6 Networks
draft-xie-bier-6man-encapsulation-02
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Network Working Group J. Xie
Internet-Draft Huawei Technologies
Intended status: Standards Track L. Geng
Expires: March 5, 2019 L. Wang
China Mobile
G. Yan
M. McBride
Y. Xia
Huawei
September 1, 2018
Encapsulation for BIER in Non-MPLS IPv6 Networks
draft-xie-bier-6man-encapsulation-02
Abstract
Bit Index Explicit Replication (BIER) introduces a new multicast-
specific BIER Header. Currently BIER has two types of encapsulation
formats: one is MPLS encapsulation, the other is Ethernet
encapsulation. This document proposes a BIER IPv6 encapsulation for
Non-MPLS IPv6 Networks using an IPv6 Destination Option extension
header.
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 [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
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
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 March 5, 2019.
Xie, et al. Expires March 5, 2019 [Page 1]
Internet-DraftEncapsulation for BIER in Non-MPLS IPv6 NetwSeptember 2018
Copyright Notice
Copyright (c) 2018 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
(https://trustee.ietf.org/license-info) in effect on the date of
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2
2. Terminology . . . . . . . . . . . . . . . . . . . . . . . . . 3
3. Problem Statement and Requirements . . . . . . . . . . . . . 3
3.1. Problem Statement . . . . . . . . . . . . . . . . . . . . 3
3.2. Requirements . . . . . . . . . . . . . . . . . . . . . . 3
4. IPv6 BIER Encapsulation . . . . . . . . . . . . . . . . . . . 4
4.1. Considerations . . . . . . . . . . . . . . . . . . . . . 4
4.2. IPv6 BIER Destination Option . . . . . . . . . . . . . . 4
4.3. The whole IPv6 header for BIER packets . . . . . . . . . 5
5. IPv6 BIER Forwarding . . . . . . . . . . . . . . . . . . . . 6
6. Security Considerations . . . . . . . . . . . . . . . . . . . 7
7. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 7
8. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . 8
9. Appendix A - BIER over IPv6 SRH Tunnel . . . . . . . . . . . 8
10. References . . . . . . . . . . . . . . . . . . . . . . . . . 9
10.1. Normative References . . . . . . . . . . . . . . . . . . 9
10.2. Informative References . . . . . . . . . . . . . . . . . 10
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 10
1. Introduction
Bit Index Explicit Replication (BIER) [RFC8279] is an architecture
that provides optimal multicast forwarding without requiring
intermediate routers to maintain any per-flow state by using a
multicast-specific BIER header. [RFC8296] defines two types of BIER
encapsulation to run on physical links: one is BIER MPLS
encapsulation to run on various physical links that support MPLS, the
other is BIER Ethernet encapsulation to run on ethernet links, with
an ethertype 0xAB37. This document proposes a BIER IPv6
encapsulation for Non-MPLS IPv6 Networks using an IPv6 Destination
Option extension header.
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