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:
Dec. 21, 2010
Filed:
Sep. 05, 2008
Sunil P. Shah, San Jose, CA (US);
Arnel Lim, San Jose, CA (US);
Donald B. Grosser, Apex, NC (US);
Jim Pan, San Ramon, CA (US);
Kesavan Thiruvenkatasamy, Sunnyvale, CA (US);
Ki-hong Park, Cupertino, CA (US);
Manpreet S. Sandhu, Santa Clara, CA (US);
Prakash Kashyap, Cupertino, CA (US);
Sunil P. Shah, San Jose, CA (US);
Arnel Lim, San Jose, CA (US);
Donald B. Grosser, Apex, NC (US);
Jim Pan, San Ramon, CA (US);
Kesavan Thiruvenkatasamy, Sunnyvale, CA (US);
Ki-Hong Park, Cupertino, CA (US);
Manpreet S. Sandhu, Santa Clara, CA (US);
Prakash Kashyap, Cupertino, CA (US);
Extreme Networks, Inc., Santa Clara, CA (US);
Abstract
A multicast data packet sent from a source node is received by a transit node. The multicast data packet includes a source address and a multicast group address. A hardware cache miss is detected at the transit node for the multicast data packet. The multicast data packet is hardware-flooded onto ports of the network. The flooding consists of forwarding a copy of the multicast data packet to neighbor nodes of the transit node based on virtual local area network (VLAN) membership. A cache-miss copy of the multicast data packet is sent to an out-of-line processing unit where it is processed in software. The processing includes establishing, via a hardware abstraction layer, a hardware cache entry for the multicast data packet. The cache-miss copy is not forwarded onto the network.