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. 28, 2010
Filed:
Oct. 31, 2007
Charles Chen, Fremont, CA (US);
Charles Chen, Fremont, CA (US);
Cortina Systems, Inc., Sunnyvale, CA (US);
Abstract
Forwarding loop prevention apparatus and methods are provided. After a communication traffic block such as a packet is received, a determination is made as to whether the packet is to be broadcasted to a number of communication devices. If the packet is to be broadcasted, the packet is modified to include an indication that the packet is reflected, and the packet is broadcasted. A device that receives the broadcasted packet determines whether it is reflected and whether the identifier is associated with the device. If the packet is reflected and the identifier is associated with the device, the device discards the packet. Otherwise it forwards the packet. Forwarding loops may instead be avoided without modifying packets, based on an amount of time elapsed between sending and receiving a packet.