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:
Jan. 27, 2009
Filed:
Feb. 28, 2003
Applicants:
Felix Yuan, Fremont, CA (US);
Jian LI, Fremont, CA (US);
Inventors:
Felix Yuan, Fremont, CA (US);
Jian Li, Fremont, CA (US);
Assignee:
Cisco Technology, Inc., San Jose, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04L 12/28 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method for performing a lookup to support forwarding of IP packets in a router comprising a network processor and a route processor is disclosed. The method includes receiving a packet having an IP address containing a network prefix and dividing available network prefixes into groups. The longest prefix is identified and a lookup is performed using hash tables. The packet is forwarded if a match is found.