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:
Feb. 14, 2012
Filed:
Nov. 24, 2007
Arjen Boers, Sitges, ES;
Ijsbrand Wijnands, Leuven, BE;
Giovanni Meo, Rome, IT;
Cisco Technology, Inc., San Jose, CA (US);
Abstract
Disclosed are, inter alia, methods, apparatus, computer-readable media, mechanisms, and means for reducing packet flooding by a packet switch. A packet switch receives a flood prevention request message from an upstream router, with this message identifying a forwarding media access control (MAC) address and one or more destination MAC addresses of downstream routers. The packet switch looks up, typically in its forwarding data structure(s), these specified MAC addresses of the downstream routers in order to determine its corresponding ports on which to communicate with these MAC addresses. The packet switch updates its forwarding data structures accordingly such that a received multicast packet having as its destination MAC address the received forwarding MAC address will be forwarded out only these determined ports.