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:
Nov. 01, 2016
Filed:
Apr. 30, 2013
Ciena Corporation, Hanover, MD (US);
Ashesh Mishra, San Jose, CA (US);
Mahesh Jethanandani, Saratoga, CA (US);
Ankur Saxena, San Jose, CA (US);
Sowmya Chandran, Fremont, CA (US);
Ciena Corporation, Hanover, MD (US);
Abstract
Methods and apparatus for optimizing fault synchronization in a bidirectional data network are provided. In an example, a downstream endpoint of the data network receives a first Alarm Indication Signal (AIS). The first AIS indicates a first FLI of an upstream interface having an interface fault. The downstream endpoint transmits, to an upstream endpoint of the data network, a second AIS including a Remote Defect Indication (RDI) and a second FLI identifying the downstream endpoint. An upstream endpoint of the data network receives the second AIS and determines that the AIS is an AIS-RDI (AIS-RDI) from the presence of the second FLI. The presence of the AIS-RDI triggers the upstream endpoint to initiate tunnel failure synchronization with the downstream endpoint.