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:
Jan. 24, 2023
Filed:
Oct. 14, 2020
Cisco Technology, Inc., San Jose, CA (US);
Carlos M. Pignataro, Cary, NC (US);
Nagendra Kumar Nainar, Morrisville, NC (US);
Jaganbabu Rajamanickam, Kanata, CA;
Madhan Sankaranarayanan, Chennai, IN;
Prakash Jain, Fremont, CA (US);
CISCO TECHNOLOGY, INC., San Jose, CA (US);
Abstract
A method is performed by a node configured to implement an Operation, Administration, and Maintenance (OAM) protocol for rapid link failure detection. The node receives peer OAM packets sent by a peer node over a link at a peer periodic interval. While in a first mode of the OAM protocol, the node determines whether the peer node is reachable based on the peer OAM packets, sends OAM packets to the peer node at a periodic interval to indicate to the peer node that the node is reachable, and responsive to detecting a critical condition of the node that impairs the sending the OAM packets, transitions to a second mode of the OAM protocol. While in the second mode, the node adds, to the peer OAM packets, a code to indicate the critical condition, and reflects the peer OAM packets with the code back to the peer node.