{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9742575","patent":{"patent_number":"US-9742575","title":"Explicit list encoding of sparse multicast group membership information with Bit Index Explicit Replication (BIER)","assignee":null,"inventors":[],"filing_date":"2015-01-13T00:00:00.000Z","publication_date":"2017-08-22T00:00:00.000Z","cpc_codes":["H04L","H04L"],"num_claims":18,"abstract":"A network device executes a method to forward a packet that is encoded using an explicit list encoding of sparse multicast group membership information with Bit Index Explicit Replication. The method includes receiving a packet that includes a bitstring having a list of Bit Forwarding Router IDs (BFR-ids). The method further includes selecting a BFR-id identifying a destination Bit Forwarding Router (BFR) from the list for processing, looking up a forwarding bitmask for the destination BFR and a next-hop to reach the destination BFR in a bit index forwarding table, creating a copy of the packet, clearing the selected BFR-id from the packet, clearing BFR-ids from the packet and the copy of the packet based on the forwarding bitmask, and forwarding the copy of the packet to the next-hop neighbor."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Explicit list encoding of sparse multicast group membership information with Bit Index Explicit Replication (BIER)","description":"A network device executes a method to forward a packet that is encoded using an explicit list encoding of sparse multicast group membership information with Bit Index Explicit Replication. The method ","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9742575","license":"CC-BY-4.0-like","license_terms":"AI-generated analysis on this page (summary, layman_explanation, technical_analysis, business_analysis, faqs) may be reused with attribution and a visible link back to the canonical URL above. Patent abstracts, claims, and bibliographic data are USPTO public domain.","required_link":"https://patentable.app/patents/US-9742575","citation_suggestion":"Patentable. \"Explicit list encoding of sparse multicast group membership information with Bit Index Explicit Replication (BIER)\" (US-9742575). https://patentable.app/patents/US-9742575","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9742575","json":"https://patentable.app/api/llm-context/US-9742575","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T07:13:38.487Z"}