{"draft":"draft-ietf-bier-idr-extensions-19","doc_id":"RFC9793","title":"BGP Extensions for Bit Index Explicit Replication (BIER)","authors":["X. Xu","M. Chen","K. Patel","IJ. Wijnands","T. Przygienda","Z. Zhang, Ed."],"format":["HTML","TEXT","PDF","XML"],"page_count":"12","pub_status":"PROPOSED STANDARD","status":"PROPOSED STANDARD","source":"Bit Indexed Explicit Replication","abstract":"Bit Index Explicit Replication (BIER) is a multicast forwarding\r\narchitecture that doesn't require an explicit tree-building protocol\r\nand doesn't require intermediate routers to maintain per-tree\r\nmulticast states. Some BIER-specific information and states, which\r\nare only in proportion to the number of BIER routers but not\r\nper-tree, do need to be advertised, calculated, and maintained. This\r\ndocument describes BGP extensions for advertising the BIER\r\ninformation and methods for calculating BIER states based on the\r\nadvertisements.","pub_date":"June 2025","keywords":[],"obsoletes":[],"obsoleted_by":[],"updates":[],"updated_by":[],"see_also":[],"doi":"10.17487\/RFC9793","errata_url":null}