Encapsulation for Bit Index Explicit Replication (BIER) in MPLS and Non-MPLS Networks (RFC8296)
Original Publication Date: 2018-Jan-01
Included in the Prior Art Database: 2018-Jan-13
Internet Society Requests For Comment (RFCs)
IJ. Wijnands: AUTHOR [+7]
[RFC8279] describes a new architecture for the forwarding of multicast data packets. Known as "Bit Index Explicit Replication" (BIER), that architecture provides optimal forwarding of multicast data packets through a "multicast domain". It does so without requiring any explicit tree-building protocol and without requiring intermediate nodes to maintain any per-flow state.
Internet Engineering Task Force (IETF) IJ. Wijnands, Ed. Request for Comments: 8296 Cisco Systems, Inc. Category: Experimental E. Rosen, Ed. ISSN: 2070-1721 Juniper Networks, Inc. A. Dolganow Nokia J. Tantsura Individual S. Aldrin Google, Inc. I. Meilik Broadcom January 2018
Encapsulation for Bit Index Explicit Replication (BIER) in MPLS and Non-MPLS Networks
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.
al. Experimental [Page 1]
RFC 8296 BIER MPLS Encapsulation Janua...