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:
Sep. 01, 2020
Filed:
Apr. 09, 2018
Barefoot Networks, Inc., Santa Clara, CA (US);
Changhoon Kim, Palo Alto, CA (US);
Jeongkeun Lee, Mountain View, CA (US);
Milad Sharif, Mountain View, CA (US);
Robert Soule, San Carlos, CA (US);
Barefoot Networks, Inc., Santa Clara, CA (US);
Abstract
Some embodiments provide a method for a particular FE in a network of FEs. The method receives a data message at a first port of the FE. The data message includes a header that specifies an egress port for each FE along a path from a source of the data message to a destination of the data message and an ingress port for at least each FE along the path that the data message has previously traversed. The method determines that the particular egress port specified for the FE is a second port that is not operational. The method generates a path failure message specifying that the second port is not operational and including a header that uses the egress ports and ingress ports in the data message. The method sends the path failure message out of the first port for delivery to the source of the data message.