BIER in IPv6 (BIERin6)
draft-zhang-bier-bierin6-07
BIER Z. Zhang
Internet-Draft ZTE Corporation
Intended status: Standards Track Z. Zhang
Expires: January 31, 2021 Juniper Networks
I. Wijnands
Cisco Systems
H. Bidgoli
Nokia
M. McBride
Futurewei
July 30, 2020
BIER in IPv6 (BIERin6)
draft-zhang-bier-bierin6-07
Abstract
BIER is a new architecture for the forwarding of multicast data
packets. This document defines native IPv6 encapsulation for BIER
hop-by-hop forwarding or BIERin6 for short.
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 January 31, 2021.
Zhang, et al. Expires January 31, 2021 [Page 1]
Internet-Draft BIERv6 July 2020
Copyright Notice
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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
2. IPv6 Header . . . . . . . . . . . . . . . . . . . . . . . . . 3
2.1. IPv6 Options Considerations . . . . . . . . . . . . . . . 4
3. BIER Header . . . . . . . . . . . . . . . . . . . . . . . . . 4
4. IPv6 Encapsulation Advertisement . . . . . . . . . . . . . . 4
4.1. Format . . . . . . . . . . . . . . . . . . . . . . . . . 5
4.2. Inter-area prefix redistribution . . . . . . . . . . . . 5
5. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 5
6. Security Considerations . . . . . . . . . . . . . . . . . . . 5
7. Acknowledgement . . . . . . . . . . . . . . . . . . . . . . . 6
8. References . . . . . . . . . . . . . . . . . . . . . . . . . 6
8.1. Normative References . . . . . . . . . . . . . . . . . . 6
8.2. Informative References . . . . . . . . . . . . . . . . . 6
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 7
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 necessarily precondition construction of a
multicast distribution tree, nor does it require intermediate nodes
to maintain any per-flow state.
This document specifies non-MPLS BIER forwarding in an IPv6 [RFC8200]
environment, refferred to as BIERin6, using non-MPLS BIER
encapsulation specified in [RFC8296].
MPLS BIER forwarding in IPv6 is outside the scope of this document.
This document uses terminology defined in [RFC8279] and [RFC8296].
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[RFC8296] defines the BIER encapsulation format in MPLS and non-MPLS
environment. In case of non-MPLS environment, a BIER packet is the
payload of an "outer" encapsulation, which has a "next header"
codepoint that is set to a value that means "non-MPLS BIER".
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