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:
May. 22, 2012
Filed:
Aug. 28, 2009
Yiqun Cai, Cupertino, CA (US);
Toerless Eckert, Mountain View, CA (US);
Heidi Ou, Saratoga, CA (US);
Yiqun Cai, Cupertino, CA (US);
Toerless Eckert, Mountain View, CA (US);
Heidi Ou, Saratoga, CA (US);
Cisco Technology, Inc., San Jose, CA (US);
Abstract
In one embodiment, a method includes receiving a join message from a receiver at a receiver edge router, the join message identifying a source and a group, and creating at least two forwarding trees for transmitting multicast data streams comprising duplicate data to the receiver edge router. The forwarding trees include a root at a source edge router in communication with the source, and different network paths. The method further includes receiving a packet from one of the forwarding trees and processing the received packet to determine if the packet is a duplicate of another packet received at the receiver edge router. If the packet is a duplicate packet, it is discarded. If the packet is not a duplicate, it is forwarded to the receiver. An apparatus is also disclosed.