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. 19, 2006
Filed:
Sep. 04, 2001
Leo Temoshenko, Raleigh, NC (US);
Leo Temoshenko, Raleigh, NC (US);
Cisco Technology, Inc., San Jose, CA (US);
Abstract
In a pipeline network processor, a multicast echo feature ensures that a copy of a packet is sent to all downstream ports associated with an upstream port that delivers the packet. The pipeline network processor maintains a table of header information that is stripped away upon reception in order to forward the packet to each appropriate downstream port. The pipeline network processor performs direct lookups to identify downstream ports associated with the upstream port over which the packet is received. A direct lookup is also performed to obtain the necessary header with which to forward the packet. A copy of the packet with the correct header is then sent to each identified downstream port.