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:
Feb. 04, 2014
Filed:
Sep. 22, 2011
Keisuke Fujita, Tokyo, JP;
Keisuke Fujita, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Abstract
A quarantine deviceperforms processing on a network provided with a VLAN-aware Layer 2 Switch. The quarantine deviceincludes a terminal detection unitthat, when a single terminal is connected to a specified port of the Layer 2 Switchthrough a VLAN-unaware hub, detects a connection of a new terminalto the hub, and a switch control unitthat, upon detecting the connection of the new terminal, configures the specified port as a trunk port and, furthermore, configures a first VLAN, which transfers only Ethernet frames having preset tags attached thereto, and a second VLAN, which transfers only Ethernet frames having no tags attached thereto, on the specified port.