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:
Oct. 23, 2007
Filed:
Feb. 27, 2006
Munetoshi Tsuge, Sagamihara, JP;
Ryo Nakamura, Yokohama, JP;
Toshiyuki Saito, Yokohama, JP;
Yasunari Shinohara, Fujisawa, JP;
Munetoshi Tsuge, Sagamihara, JP;
Ryo Nakamura, Yokohama, JP;
Toshiyuki Saito, Yokohama, JP;
Yasunari Shinohara, Fujisawa, JP;
Hitachi Communication Technologies, Ltd., Tokyo, JP;
Abstract
A packet forwarding apparatus for connecting a plurality of user terminals to an ISP management server has a management table indicating the relationship between a connection port identifier and specific header information in association with the MAC address of each of the user terminals so that, in a communication protocol procedure executed between each of the user terminals and the ISP management server prior to communication with a wide-area network, the packet forwarding apparatus discards a packet for the user terminal when it is determined that the specific header information cannot be assigned to the user terminal based on the management table.