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. 22, 2015
Filed:
Mar. 15, 2013
Donald B. Grosser, Apex, NC (US);
Vanitha Neelamegam, Chennai, IN;
Maruthamuthu Palani, Chennai, IN;
Balasubramanian Ramu, Chennai, IN;
Kannan Selvaraj, Chennai, IN;
Donald B. Grosser, Apex, NC (US);
Vanitha Neelamegam, Chennai, IN;
Maruthamuthu Palani, Chennai, IN;
Balasubramanian Ramu, Chennai, IN;
Kannan Selvaraj, Chennai, IN;
Extreme Networks, Inc., San Jose, CA (US);
Abstract
A switching device receives a data packet and searches for a layer 3 multicast destination address specified in a header of the received data packet in a layer 3 multicast forwarding database table. The switch searches for a corresponding port list in a layer 3 egress table if the layer 3 multicast destination address is found. However, if the layer 3 multicast destination address is not found, the switch searches for a layer 2 destination address specified in header of the received data packet in a layer 2 multicast forwarding database table, and the switch searches for a port list in a layer 2 egress table if the layer 2 destination address is found. If neither the layer 3 or layer 2 destination address is found in the searches, the switch discards or floods the received data packet out all ports of the switching device.