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:
Nov. 04, 2014
Filed:
Mar. 26, 2012
Stefano Previdi, Rome, IT;
Dino Farinacci, San Jose, CA (US);
Ijsbrand Wijnands, Leuven, BE;
Arjen Boers, Sitges, ES;
Stefano Previdi, Rome, IT;
Dino Farinacci, San Jose, CA (US);
Ijsbrand Wijnands, Leuven, BE;
Arjen Boers, Sitges, ES;
Cisco Technology, Inc., San Jose, CA (US);
Abstract
Various techniques for exchanging control messages in order to gracefully reroute multicast traffic are disclosed. For example, one method involves sending a join message for a multicast group towards a root of a new multicast tree and forwarding multicast traffic, addressed to the multicast group, on a current multicast tree until an acknowledgment corresponding to the join message is received. The new multicast tree can be identified in response to detection of a topology change within the network. Until the acknowledgment is received, multicast traffic that is received via the new multicast tree can be dropped.