LSR Extensions for BIER over Ethernet
draft-ietf-bier-lsr-ethernet-extensions-00
Internet Engineering Task Force S. Dhanaraj, Ed.
Internet-Draft Huawei
Updates: 8296 (if approved) IJ. Wijnands
Intended status: Standards Track P. Psenak
Expires: November 14, 2019 Cisco Systems, Inc.
Z. Zhang
Juniper Networks.
G. Yan
J. Xie
Huawei
May 13, 2019
LSR Extensions for BIER over Ethernet
draft-ietf-bier-lsr-ethernet-extensions-00
Abstract
Bit Index Explicit Replication (BIER) [RFC8279] is an architecture
that provides multicast forwarding through a "BIER domain" without
requiring intermediate routers to maintain multicast related per-flow
state. BIER can be supported in MPLS and non-MPLS networks. The
common BIER header format and encapsulation for MPLS and non-MPLS
networks is specified in [RFC8296].
This document specifies the required extensions to the IS-IS
[RFC1195] and OSPFv2 [RFC2328] protocol for supporting BIER in non-
MPLS networks using BIER in Ethernet encapsulation.
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 November 14, 2019.
Dhanaraj, et al. Expires November 14, 2019 [Page 1]
Internet-Draft LSR Extensions for BIER over Ethernet May 2019
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2
2. Terminology . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.1. Requirements Language . . . . . . . . . . . . . . . . . . 5
3. Specification . . . . . . . . . . . . . . . . . . . . . . . . 5
3.1. IS-IS BIER Ethernet Encapsulation Sub-sub TLV . . . . . . 5
3.2. OSPFv2 BIER Ethernet Encapsulation Sub-TLV . . . . . . . 6
4. Security Considerations . . . . . . . . . . . . . . . . . . . 8
5. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 8
5.1. IS-IS sub-sub-TLVs for BIER Info sub-TLV Registry . . . . 8
5.2. OSPFv2 Extended Prefix TLV Sub-TLVs Registry . . . . . . 8
6. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . 9
7. References . . . . . . . . . . . . . . . . . . . . . . . . . 9
7.1. Normative References . . . . . . . . . . . . . . . . . . 9
7.2. Informative References . . . . . . . . . . . . . . . . . 9
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 11
1. Introduction
Bit Index Explicit Replication (BIER) [RFC8279] is an architecture
that provides multicast forwarding through a "BIER domain" without
requiring intermediate routers to maintain multicast related per-flow
state. BIER can be supported in MPLS and non-MPLS networks.
[RFC8296] specifies a common BIER header format for both MPLS and
non-MPLS networks, though the first 20-bits of the BIER header
(referred as BIFT-id) is a "MPLS Label" in case of MPLS networks and
is a "domain-wide-unique-value" representing the combination of SD-
BSL-SI in case of non-MPLS networks.
[I-D.ietf-bier-non-mpls-bift-encoding] specifies two optional ways of
statically assigning domain-wide-unique mapping between BIFT-IDs and
SD-BSL-SI combination.
Dhanaraj, et al. Expires November 14, 2019 [Page 2]
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