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:
Aug. 09, 2016
Filed:
Feb. 03, 2014
Hitachi Metals, Ltd., Minato-ku, Tokyo, JP;
Makoto Yasuda, Tsuchiura, JP;
Hitachi Metals, Ltd., Tokyo, JP;
Abstract
A network relay device capable of easily recognizing a state of hash value collision is provided. Each of a plurality of entries contained in an address table includes: a first area in which first information is registered, the first information indicating a relation between a plurality of ports and MAC addresses existing beyond the plurality of ports; and a second area in which second information is registered. In learning a transmission-source MAC address of a frame received at a port, a frame processing unit calculates a hash value by using the transmission-source MAC address first. Next, if a MAC address different from the transmission-source MAC address has been registered in the first area of an entry corresponding to the hash value, the frame processing unit registers the second information in the second area.