LSR Extensions for BIER over Ethernet
draft-ietf-bier-lsr-ethernet-extensions-01
Internet Engineering Task Force S. Dhanaraj, Ed.
Internet-Draft Huawei
Updates: 8296 (if approved) IJ. Wijnands
Intended status: Standards Track P. Psenak
Expires: January 9, 2020 Cisco Systems, Inc.
Z. Zhang
Juniper Networks.
G. Yan
J. Xie
Huawei
July 08, 2019
LSR Extensions for BIER over Ethernet
draft-ietf-bier-lsr-ethernet-extensions-01
Abstract
Bit Index Explicit Replication (BIER) 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.
This document specifies the required extensions to the IS-IS, OSPFv2
and OSPFv3 protocols for supporting BIER in non-MPLS networks using
BIER in Ethernet encapsulation.
Status of This Memo
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provisions of BCP 78 and BCP 79.
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material or to cite them other than as "work in progress."
This Internet-Draft will expire on January 9, 2020.
Dhanaraj, et al. Expires January 9, 2020 [Page 1]
Internet-Draft LSR Extensions for BIER over Ethernet July 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 . . . . . . . 7
3.3. OSPFv3 BIER Ethernet Encapsulation Sub-TLV . . . . . . . 8
4. Security Considerations . . . . . . . . . . . . . . . . . . . 10
5. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 10
5.1. IS-IS sub-sub-TLVs for BIER Info sub-TLV Registry . . . . 10
5.2. OSPFv2 Extended Prefix TLV Sub-TLVs Registry . . . . . . 10
5.3. OSPFv3 Extended LSA Sub-TLVs Registry . . . . . . . . . . 11
6. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . 11
7. References . . . . . . . . . . . . . . . . . . . . . . . . . 11
7.1. Normative References . . . . . . . . . . . . . . . . . . 11
7.2. Informative References . . . . . . . . . . . . . . . . . 11
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 13
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
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