@techreport{ietf-bier-idr-extensions-19, number = {draft-ietf-bier-idr-extensions-19}, 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-idr-extensions/19/}, author = {Xiaohu Xu and Mach Chen and Keyur Patel and IJsbrand Wijnands and Tony Przygienda and Zhaohui (Jeffrey) Zhang}, title = {{BGP Extensions for BIER}}, pagetotal = 15, year = 2024, month = dec, day = 19, 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 state, 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.}, }