{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-10511532","patent":{"patent_number":"US-10511532","title":"Algorithmic longest prefix matching in programmable switch","assignee":null,"inventors":[],"filing_date":"2018-03-21T00:00:00.000Z","publication_date":"2019-12-17T00:00:00.000Z","cpc_codes":["H04L","H04L","H04L","H04L","H04L","H04L","H04L","H04L"],"num_claims":21,"abstract":"Some embodiments provide a method for configuring unit memories (e.g., unit static random access memories (SRAMs) and ternary content addressable memories (TCAMs) of a network forwarding IC to implement a set of longest prefix matching (LPM) tables. Two different methods of providing a longest prefix match (LPM) operation that minimize the use of ternary content addressable memory (TCAM) are presented. Each method takes advantage of the use of match-action stages and the programmability of the unit memories. An algorithmic LPM embodiment is presented which uses a TCAM index with pointers to SRAM partitions that store subtrees of a routing tree (routing trie structure) and performs subtree rearrangements in the partitions upon the addition of certain routing entries. A chained LPM embodiment, allocates separate exact-match tables for a set of address prefix lengths in, for example, SRAMS, as well as a set of non-exact match tables in, for example, TCAMs."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Algorithmic longest prefix matching in programmable switch","description":"Some embodiments provide a method for configuring unit memories (e.g., unit static random access memories (SRAMs) and ternary content addressable memories (TCAMs) of a network forwarding IC to impleme","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-10511532","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-10511532","citation_suggestion":"Patentable. \"Algorithmic longest prefix matching in programmable switch\" (US-10511532). https://patentable.app/patents/US-10511532","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-10511532","json":"https://patentable.app/api/llm-context/US-10511532","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T22:36:05.208Z"}