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. 31, 2010
Filed:
Jul. 23, 2004
Kurt J. Windisch, Florence, OR (US);
Weesan Lee, Arcadia, CA (US);
Isidoros Kouvelas, San Mateo, CA (US);
Kurt J. Windisch, Florence, OR (US);
WeeSan Lee, Arcadia, CA (US);
Isidoros Kouvelas, San Mateo, CA (US);
Cisco Technology, Inc., San Jose, CA (US);
Abstract
A multicast non-stop forwarding (NSF) router architecture enhances high availability of a multicast router in a computer network. The router architecture further preserves multicast data forwarding through a data plane during NSF recovery of one or more failures in a control plane of the router. Various multicast components of the router cooperate to provide a checkpointing and recovery technique of the multicast NSF architecture that enables efficient restart and recovery of the control plane failures without loss of data connectivity.