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:
Jun. 17, 2003
Filed:
May. 14, 1999
Katsuhiko Ikeda, Hino, JP;
Kazuo Nogami, Sagamihara, JP;
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Abstract
The present invention aims at implementing acceleration of the hop-by-hop transfer without using a high-speed processor. In the present invention, a transfer destination searching circuit ( ) constituted by hardware is provided in addition to a processor ( ). In the transfer destination searching circuit ( ), after header information has been extracted from received IP packet data, a content addressable memory ( ) is first searched by using the header information as a key. If corresponding forwarding information cannot be obtained from the searching of the content addressable memory ( ), HASH function searching is executed by employing an HASH searching pointer table ( ). If the forwarding information is obtained from a forwarding table ( ) as a result of these searching operations, the hop-by-hop transfer of the IP packet data is executed in accordance with the forwarding information.