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(11)

EP 4 817 244 A1

(12)

(43) Date of publication: 07.10.2026 Bulletin 2026/41 (21) Application number: 24827398.9 (22) Date of filing: 24.11.2024

(51) International Patent Classification (IPC):  H04L 9/40(2022.01) G06F 11/30(2006.01) (52) Cooperative Patent Classification (CPC): H04L 63/20; H04L 41/0894; G06F 11/3006; G06F 11/3055 (86) International application number: PCT/US2024/057201 (87) International publication number: WO 2025/117396 (05.06.2025 Gazette 2025/23)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC ME MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA Designated Validation States: GE KH MA MD TN (30) Priority: 29.11.2023 US 202318523445 (71) Applicant: Cisco Technology, Inc. San Jose, CA 95134 (US)

(72) Inventors: FONTENOT, Gabriel J. San Jose, California 95134 (US) MACH, Paul San Jose, California 95134 (US) LEE, Tony San Jose, California 95134 (US) SHAH, Brijeshkumar Ravindrakumar San Jose, California 95134 (US) GISIGER, Furong Ma San Jose, California 95134 (US) URZUA, Edwin Gonzalez San Jose, California 95134 (US) CHHAJED, Apurva San Jose, California 95134 (US) RADHAKRISHNAN, Janardhanan San Jose, California 95134 (US) SINGH, Amandeep San Jose, California 95134 (US) (74) Representative: Mathys & Squire  32 London Bridge Street The Shard London SE1 9SG London SE1 9SG (GB)