{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-8499060","patent":{"patent_number":"US-8499060","title":"Upgrading system software in a chassis without traffic loss","assignee":null,"inventors":[],"filing_date":"2010-03-19T00:00:00.000Z","publication_date":"2013-07-30T00:00:00.000Z","cpc_codes":["G06F","G06F"],"num_claims":20,"abstract":"Rolling software upgrades may be employed for a network device in a modular chassis and/or virtual chassis. The network device may include memory devices to store a software upgrade package and a group of instructions, and a processor. The processors may install the software upgrade package on a backup routing engine; determine subsets of multiple line cards on which to perform a software upgrade, where ports in each of the multiple line cards are part of a link aggregation group (LAG); initiate a reboot process for each of the subsets of multiple line cards, in sequence, where the reboot process for each of the line cards results in a software upgrade without deactivating any LAG. The processors may also switch the backup routing engine and a master routing engine to create a new master routing engine and a new backup routing engine, and install the upgrade package on the new backup routing engine."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Upgrading system software in a chassis without traffic loss","description":"Rolling software upgrades may be employed for a network device in a modular chassis and/or virtual chassis. The network device may include memory devices to store a software upgrade package and a grou","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-8499060","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-8499060","citation_suggestion":"Patentable. \"Upgrading system software in a chassis without traffic loss\" (US-8499060). https://patentable.app/patents/US-8499060","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-8499060","json":"https://patentable.app/api/llm-context/US-8499060","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-31T01:06:55.888Z"}