The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 16, 2026
Filed:
Dec. 07, 2023
Ciena Corporation, Hanover, MD (US);
Todd Defilippi, Redwood City, CA (US);
Cengiz Alaettinoglu, Sherman Oaks, CA (US);
Ciena Corporation, Hanover, MD (US);
Abstract
Systems and methods for detecting segment expansion changes in Segment Routing using Dynamic Shortest Path First (SPF) include tracking one or more provisioned paths for one or more Segment Routing (SR) policies in a Segment Routing network, based on Shortest Path First (SPF) pairs associated with segments of the one or more provisioned paths; responsive to routing changes in the Segment Routing network, determining which of the SPF pairs are affected due to their SPF trees changing based on the routing changes; and determining which of the one or more SR policies have veered off of their respective provisioned path based on which of the SPF pairs are affected by the routing changes.