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. 02, 2008
Filed:
Jul. 26, 2004
Daiki Nozue, Fujisawa, JP;
Hiroaki Miyata, Yokohama, JP;
Norihiro Kambe, Yokohama, JP;
Shinsuke Shimizu, Yokohama, JP;
Daiki Nozue, Fujisawa, JP;
Hiroaki Miyata, Yokohama, JP;
Norihiro Kambe, Yokohama, JP;
Shinsuke Shimizu, Yokohama, JP;
Hitachi Communcation Technologies, Ltd., Tokyo, JP;
Abstract
One physical VLAN server provides a plurality of VLANs with services. VLANs #to #are connected to the VLAN server though a switching hub. The VLAN server includes server processes #to #corresponding to the VLANs #to #, respectively, for providing the VLANs with services. The server processes #to #each have internal IP addresses N, N, and N. The VLAN server has external IP addresses G, G, and Gfor the VLANs #to #, respectively. When a client #-on the VLAN #issues data to the VLAN server with the destination IP address being set to G, a receiving-VLAN-tag-NAT processing section of a device driver in the VLAN server changes the destination IP address from Gto Nwith the use of a VLAN tag V, and the server process #receives the data