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:
Jun. 15, 2004
Filed:
Dec. 14, 2000
Yunzhou Li, Lowell, MA (US);
Nortel Networks Limited, , CA;
Abstract
A system, device, and method for detecting and recovering from failures in a multicast communication system involves joining a multicast group over a primary interface, monitoring for multicast group information received over the primary interface, and determining that there is a multicast group failure if no multicast group information is received over the primary interface for a predetermined amount of time. Recovering from such a failure typically involves joining the multicast group over a backup interface in order to continue receiving multicast group information over the backup interface. A relay/proxy device may join the multicast group on behalf of a multicast host and forward multicast group information to the multicast host.