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:
Sep. 30, 2014
Filed:
Oct. 22, 2010
Kunal R. Shah, Mountain View, CA (US);
Avoy K. Nanda, Milpitas, CA (US);
Kunal R. Shah, Mountain View, CA (US);
Avoy K. Nanda, Milpitas, CA (US);
Telefonaktiebolaget L M Ericsson (Publ), Stockholm, SE;
Abstract
A method performed in a network element coupled between a subscriber end station and a multicast source for tracking a history of IGMP report messages. The network element receives and IGMP report message from the subscriber end station and determines a multicast group address and multicast source IP address corresponding to a multicast group to which the network element is a member. The network element builds an IGMP report history record indicating the subscriber end station's identity and comprises the multicast group address, the multicast source IP address, and a time stamp corresponding to the date and time at which the network element received the IGMP report message. This record is then stored in an IGMP report history database along with a plurality of other IGMP report history records so that the network element can maintain a history of IGMP report messages received from the subscriber end station.