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. 03, 2003
Filed:
Dec. 21, 1998
Hiroo Kanamaru, Tokyo, JP;
Masato Ushijima, Tokyo, JP;
Kenji Ueda, Tokyo, JP;
Yukio Yaguchi, Tokyo, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
A network monitoring device disposed at a node connected to a network includes a determination unit for sending a monitoring packet to a neighboring node upstream or downstream, and for determining that the neighboring node has broken away from the network unless the determination unit does not receive a response packet from the neighbor, and a notification unit for, when the determination unit has determined that the neighboring node upstream or downstream has broken away from the network, broadcasting a notification packet indicating the event to all other nodes connected to the network.