{
  "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": [
    "XML",
    "TEXT",
    "HTML",
    "PDF"
  ],
  "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 architecture that doesn't require an explicit tree-building protocol and doesn't require intermediate routers to maintain per-tree multicast states.  Some BIER-specific information and states, which are only in proportion to the number of BIER routers but not per-tree, do need to be advertised, calculated, and maintained.  This document describes BGP extensions for advertising the BIER information and methods for calculating BIER states based on the advertisements.",
  "pub_date": "June 2025",
  "keywords": [],
  "obsoletes": [],
  "obsoleted_by": [],
  "updates": [],
  "updated_by": [],
  "see_also": [],
  "doi": "10.17487/RFC9793",
  "errata_url": "https://www.rfc-editor.org/errata/rfc9793"
}