RFC 8296 has been reclassified as Proposed Standard.
RFC 8296
Title: Encapsulation for Bit Index Explicit
Replication (BIER) in MPLS and Non-MPLS
Networks
Author: IJ. Wijnands, Ed.,
E. Rosen, Ed.,
A. Dolganow,
J. Tantsura,
S. Aldrin,
I. Meilik
Status: Standards Track
Stream: IETF
Date: January 2018
Pages: 24
Characters: 47866
Updates/Obsoletes/SeeAlso: None
I-D Tag: draft-ietf-bier-mpls-encapsulation-12.txt
URL: https://www.rfc-editor.org/info/rfc8296
DOI: 10.17487/RFC8296
Bit Index Explicit Replication (BIER) is an architecture that
provides optimal multicast forwarding through a "multicast domain",
without requiring intermediate routers to maintain any per-flow state
or to engage in an explicit tree-building protocol. When a multicast
data packet enters the domain, the ingress router determines the set
of egress routers to which the packet needs to be sent. The ingress
router then encapsulates the packet in a BIER header. The BIER
header contains a bit string in which each bit represents exactly one
egress router in the domain; to forward the packet to a given set of
egress routers, the bits corresponding to those routers are set in
the BIER header. The details of the encapsulation depend on the type
of network used to realize the multicast domain. This document
specifies a BIER encapsulation that can be used in an MPLS network
or, with slight differences, in a non-MPLS network.
This document is a product of the Bit Indexed Explicit Replication Working Group of the IETF.
STANDARDS TRACK: This document specifies an Internet Standards Track
protocol for the Internet community, and requests discussion and suggestions
for improvements. Please refer to the current edition of the Official
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