Supporting BIER in IPv6 Networks (BIERin6)
draft-zhang-bier-bierin6-09
BIER Z. Zhang
Internet-Draft ZTE Corporation
Intended status: Standards Track Z. Zhang, Ed.
Expires: August 26, 2021 Juniper Networks
I. Wijnands
Individual
M. Mishra
Cisco Systems
H. Bidgoli
Nokia
G. Mishra, Ed.
Verizon
February 22, 2021
Supporting BIER in IPv6 Networks (BIERin6)
draft-zhang-bier-bierin6-09
Abstract
BIER is a new architecture for the forwarding of multicast data
packets without requiring per-flow state inside the network. This
document describes how the existing BIER encapsulation specified in
RFC 8296 works in an IPv6 non-MPLS network, referred to as BIERin6.
Specifically, like in an IPv4 network, BIER can work over L2 links
directly or over tunnels. In case of IPv6 tunneling, a new IP "Next
Header" type is to be assigned for BIER.
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
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
Zhang, et al. Expires August 26, 2021 [Page 1]
Internet-Draft BIERin6 February 2021
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 August 26, 2021.
Copyright Notice
Copyright (c) 2021 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
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2
1.1. BIER over L2/Tunnels . . . . . . . . . . . . . . . . . . 3
1.2. Considerations of Requirements for BIER in IPv6 Networks 3
2. IPv6 Header . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.1. IPv6 Options Considerations . . . . . . . . . . . . . . . 5
3. BIER Header . . . . . . . . . . . . . . . . . . . . . . . . . 6
4. IPv6 Encapsulation Advertisement . . . . . . . . . . . . . . 6
4.1. Format . . . . . . . . . . . . . . . . . . . . . . . . . 6
4.2. Inter-area prefix redistribution . . . . . . . . . . . . 7
5. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 7
6. Security Considerations . . . . . . . . . . . . . . . . . . . 7
7. Acknowledgement . . . . . . . . . . . . . . . . . . . . . . . 7
8. References . . . . . . . . . . . . . . . . . . . . . . . . . 7
8.1. Normative References . . . . . . . . . . . . . . . . . . 8
8.2. Informative References . . . . . . . . . . . . . . . . . 8
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 10
1. Introduction
BIER [RFC8279] is a new architecture for the forwarding of multicast
data packets. It provides optimal forwarding through a "multicast
domain" and it does not precondition construction of a multicast
distribution tree, nor does it require intermediate nodes to maintain
any per-flow state.
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