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. 02, 2008
Filed:
Feb. 17, 2004
Yoshihisa Takatsu, Yamato, JP;
Shinpei Watanabe, Yokohama, JP;
Masaya Mori, Kawasaki, JP;
Toshio Sunaga, Ohtsu, JP;
Yoshihisa Takatsu, Yamato, JP;
Shinpei Watanabe, Yokohama, JP;
Masaya Mori, Kawasaki, JP;
Toshio Sunaga, Ohtsu, JP;
International Business Machines Corporation, Armonk, NY (US);
Abstract
A communication control apparatus includes search information associated with a tree structure. A mask prefix is associated with at least one entry, each entry including information on the mask length of a mask prefix associated therewith and a sort key. Each entry is assigned to a node in the tree structure according to a sorting order. Each node is linked to a different node at the next lower hierarchy via a branch based on the entry of the node. A destination address of the packet received is first extracted, and a search target node specified by a search control for an entry having information on the best matched prefix of the extracted address is then searched for. After completion of the node-by-node search process, a transfer route is determined for the packet received based on the longest prefix amongst the most appropriate prefixes of all the current search target nodes.