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:
Jul. 14, 2020
Filed:
May. 15, 2017
Ciena Corporation, Hanover, MD (US);
Nikhil Sanjeev Kulkarni, San Jose, CA (US);
Ankur Saxena, Mountain View, CA (US);
Varthamanan Sugumaran, Milpitas, CA (US);
Praveen Ambalappat, Milpitas, CA (US);
Dhanya Harilal, San Jose, CA (US);
Ciena Corporation, Hanover, MD (US);
Abstract
Systems and methods of Service Function Chaining (SFC) fault detection and fault isolation include injecting a first frame with a first Virtual Local Area Network (VLAN) Identifier (ID) tag at an input to the SFC, wherein the first VLAN ID is dedicated to fault detection and a plurality of classifiers in the SFC are configured to pass the first frame with the first VLAN ID through the SFC; detecting the first frame with the first VLAN ID tag at an output of the SFC; and determining connectivity of the SFC based on the detecting. The systems and methods can further include injecting a second frame with a second VLAN ID tag through a plurality of services of the SFC; detecting the second frame at each output of each of the plurality of services; and determining a location of the fault based on the detecting the second frame.