%% You should probably cite draft-ietf-bier-bgp-ls-bier-ext-17 instead of this revision. @techreport{ietf-bier-bgp-ls-bier-ext-08, number = {draft-ietf-bier-bgp-ls-bier-ext-08}, type = {Internet-Draft}, institution = {Internet Engineering Task Force}, publisher = {Internet Engineering Task Force}, note = {Work in Progress}, url = {https://datatracker.ietf.org/doc/draft-ietf-bier-bgp-ls-bier-ext/08/}, author = {Ran Chen and Zheng Zhang and Vengada Prasad Govindan and IJsbrand Wijnands}, title = {{BGP Link-State extensions for BIER}}, pagetotal = 12, year = , month = , day = , 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 bitstring 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. BGP Link-State (BGP-LS) enables the collection of various topology information from the network, and the topology informations are used by the controller to calculate the fowarding table and then program them onto the ingress nodes(instead of having each node to calculate on its own) and that can be for both inter-as and intra-as situations. This document specifies extensions to the BGP Link-state address- family in order to advertise BIER informations.}, }