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Encapsulation for Bit Index Explicit Replication (BIER) in MPLS and Non-MPLS Networks (RFC8296) Disclosure Number: IPCOM000252459D
Original Publication Date: 2018-Jan-01
Included in the Prior Art Database: 2018-Jan-13
Document File: 48 page(s) / 48K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

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.

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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.

Wijnands, et al.              Experimental                      [Page 1]
 RFC 8296                 BIER MPLS Encapsulation            Janua...