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:
Mar. 21, 2017
Filed:
Jan. 15, 2015
International Business Machines Corporation, Armonk, NY (US);
Chidambaram Bhagavathiperumal, Santa Clara, CA (US);
Angu Selvam Chandra Sekaran, Santa Clara, CA (US);
Suryanarayan Ramamurthy, Sunnyvale, CA (US);
Jun Yao, Qingxi, CN;
Yuan Yuan Zhang, Wuxi, CN;
International Business Machines Corporation, Armonk, NY (US);
Abstract
In one embodiment, a system includes a multicast snooping querier configured to send and receive Internet Group Membership Protocol (IGMP) messages, and one or more IGMP switches interconnected to form a network, wherein at least one of the one or more IGMP switches is connected to the multicast snooping querier, wherein the one or more IGMP switches are configured to: handle IGMP messages, and create a general query solicit (GQS) message configured to solicit a general query from the multicast snooping querier, and wherein the multicast snooping querier is configured to send out a general query (GQ) message on all ports in response to receiving the GQS message to solicit port information and group membership information from each of the one or more IGMP switches. In other embodiments, systems, methods and computer program products are described to enable fast recovery of multicast router ports, upon a STP topology change.