BIER Use Cases
draft-ietf-bier-use-cases-10
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2019-08-04
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draft-kumar-bier-use-cases
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Network Working Group N. Kumar
Internet-Draft R. Asati
Intended status: Informational Cisco
Expires: February 5, 2020 M. Chen
X. Xu
Huawei
A. Dolganow
Nokia
T. Przygienda
Juniper Networks
A. Gulko
Thomson Reuters
D. Robinson
id3as-company Ltd
V. Arya
DirecTV Inc
C. Bestler
Nexenta
August 4, 2019
BIER Use Cases
draft-ietf-bier-use-cases-10.txt
Abstract
Bit Index Explicit Replication (BIER) is an architecture that
provides optimal multicast forwarding through a "BIER domain" without
requiring intermediate routers to maintain any multicast related per-
flow state. BIER also does not require any explicit tree-building
protocol for its operation. A multicast data packet enters a BIER
domain at a "Bit-Forwarding Ingress Router" (BFIR), and leaves the
BIER domain at one or more "Bit-Forwarding Egress Routers" (BFERs).
The BFIR router adds a BIER header to the packet. The BIER header
contains a bit-string in which each bit represents exactly one BFER
to forward the packet to. The set of BFERs to which the multicast
packet needs to be forwarded is expressed by setting the bits that
correspond to those routers in the BIER header.
This document describes some of the use cases for BIER.
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
Kumar, et al. Expires February 5, 2020 [Page 1]
Internet-Draft BIER Use Cases August 2019
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 February 5, 2020.
Copyright Notice
Copyright (c) 2019 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
publication of this document. Please review these documents
carefully, as they describe your rights and restrictions with respect
to this document. Code Components extracted from this document must
include Simplified BSD License text as described in Section 4.e of
the Trust Legal Provisions and are provided without warranty as
described in the Simplified BSD License.
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 3
2. Specification of Requirements . . . . . . . . . . . . . . . . 3
3. BIER Use Cases . . . . . . . . . . . . . . . . . . . . . . . 3
3.1. Multicast in L3VPN Networks . . . . . . . . . . . . . . . 3
3.2. BUM in EVPN . . . . . . . . . . . . . . . . . . . . . . . 4
3.3. IPTV and OTT Services . . . . . . . . . . . . . . . . . . 5
3.4. Multi-Service, Converged L3VPN Network . . . . . . . . . 6
3.5. Control-Plane Simplification and SDN-Controlled Networks 7
3.6. Data Center Virtualization/Overlay . . . . . . . . . . . 7
3.7. Financial Services . . . . . . . . . . . . . . . . . . . 8
3.8. 4K Broadcast Video Services . . . . . . . . . . . . . . . 9
3.9. Distributed Storage Cluster . . . . . . . . . . . . . . . 10
3.10. HTTP-Level Multicast . . . . . . . . . . . . . . . . . . 11
4. Security Considerations . . . . . . . . . . . . . . . . . . . 13
5. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 13
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