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:
Aug. 14, 2012
Filed:
Dec. 30, 2008
Nicolas Tausanovitch, Windham, NH (US);
Michael Craren, Holliston, MA (US);
Hamid Assarpour, Arlington, MA (US);
Nicolas Tausanovitch, Windham, NH (US);
Michael Craren, Holliston, MA (US);
Hamid Assarpour, Arlington, MA (US);
Rockstar Bidco, LP, New York, NY (US);
Abstract
A network element disposed at an edge of a connectivity fault management (CFM) domain includes a switch fabric, a central processor (CP) card, and a line card in communication with the CP card through the switch fabric. The line card includes an Ethernet interface for transmitting and receiving Ethernet CFM frames over a network and circuitry configured to generate new continuity check messages (CCMs) periodically, to process CCMs received on each connection supported by the line card, and to detect a loss of continuity for any of the connections supported by the line card. The line card maintains a list of supported connections. A generate timer and an age counter are associated with each connection in the list. The line card generates a CCM for a given connection when the generate timer expires and detects a loss of continuity for the given connection when its age counter exceeds a threshold.