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. 27, 2016
Filed:
Apr. 07, 2014
Hitachi Metals, Ltd., Minato-ku, Tokyo, JP;
Kazutoshi Kariya, Tsuchiura, JP;
Hitachi Metals, Ltd., Tokyo, JP;
Abstract
A network relay device capable of shortening retrieval time for an address table or reducing a capacity of the address table is provided. When a transmission-source address of a frame received at first and second port groups is learned, a frame processing unit performs a hash calculation by using the transmission-source address and a first internal identifier. Then, an internal identifier etc., corresponding to the receiving port is registered in an entry inside an address table obtained by the hash calculation. On the other hand, when a transmission-destination address of a frame received at the first and second pot groups is retrieved, the frame processing unit performs a hash calculation by using the transmission-destination address and, reads out an entry inside the address table obtained by the hash calculation, and compares the internal identifier inside the address table with an internal identifier corresponding to the receiving port.