1
Naoki Oguchi, Tetsumei Tsuruoka, Makoto Kubota: Virtual path configuration apparatus, virtual path configuration method, and computer product. Fujitsu, Katten Muchin Rosenman, October 20, 2009: US07606260 (145 worldwide citation)

Configuration information set in one virtual path configuration apparatus is shared with all the virtual path configuration apparatuses in the virtual private network. The configuration information may be shared by transmitting the configuration information to other virtual path configuration appara ...


2
Naoki Oguchi, Yuji Saito: Virtual network construction method, system, and relaying apparatus. Fujitsu, Katten Muchin Rosenman, February 9, 2010: US07660324 (87 worldwide citation)

In a virtual network construction method, a virtual network construction system, and a relaying apparatus within a public data communication network, control packets each having set a multicast address are multicast, and upon reception of the control packets by the relaying apparatuses belonging to ...


3
Naoki Oguchi: Packet processing device. Fujitsu, Katten Muchin Zavis Rosenman, June 14, 2005: US06907042 (85 worldwide citation)

A packet processing device in which a receiving buffer free space notifying portion notifies a free space of a receiving buffer, an accumulation condition determining portion determines a size of a big packet based on the free space, and a reassembly buffer processor reassembles a plurality of recei ...


4
Naoki Oguchi, Tetsumei Tsuruoka: Process and apparatus for speeding-up layer-2 and layer-3 routing, and for determining layer-2 reachability, through a plurality of subnetworks. Fujitsu, Helfgott & Karas P C, October 16, 2001: US06304912 (32 worldwide citation)

A communication apparatus contains a first table having entries each storing a data-link-layer path to a second communication apparatus, and a second table storing a pointer to the entry of the first table, storing the data-link-layer path to the second communication apparatus, corresponding to a ne ...


5
Makoto Kubota, Naoki Oguchi, Tetsumei Tsuruoka: Communication data relay system and method of controlling connectability between domains. Fujitsu, Katten Muchin Rosenman, August 23, 2005: US06934763 (21 worldwide citation)

A relay system, comprises interface units for accessing networks, a domain definition module, an connection definition module, a routing module, an address translation module for translating, when forwarding a communication data from one domain to another domain, a source address belonging to the so ...


6
Naoki Oguchi: Device, network, and system for forwarding frames between geographically dispersed user networks. Fujitsu, Katten Muchin Rosenman, September 29, 2009: US07596101 (15 worldwide citation)

A frame forwarding system which has a plurality of frame forwarding devices and links to transport frames between external networks that belong to a particular group. This system is designed to prevent backbone links from being blocked even when there is a backdoor link that forms a potential loop i ...


7
Naoki Oguchi, Satoshi Nojima: End equipment and router. Fujitsu, Katten Muchin Zavis Rosenman, September 23, 2003: US06625658 (14 worldwide citation)

An end equipment (including a terminal equipment and a router) executes a destination address resolution of a data packet. In a network layer, when a packet transmitter detects that a direct route of an input packet is not registered in a routing table a path manager transmits an inquiry packet, dem ...


8
Naoki Oguchi, Tetsumei Tsuruoka: Packet processing system. Fujitsu, Katten Muchin Rosenman, January 13, 2009: US07477640 (9 worldwide citation)

A packet processing system including a forwarding apparatus that sends and receives a packet by using a network interface and a control apparatus that includes an application receiving the packet is provided. The control apparatus includes: a symbol part corresponding to the forwarding apparatus; an ...


9
Naoki Oguchi: Communication data relay system. Fujitsu, Katten Muchin Rosenman, August 11, 2009: US07574522 (8 worldwide citation)

A technology in a relay system for relaying communication data between a plurality of domains by an address translation, is capable of executing, even when there are both streams of inter-domain and intra-domain communications, the communications with security ensured without setting a complicated p ...


10
Naoki Oguchi: Mobile communications system conforming to mobile IP, and home agent, mobile node and method used in the mobile communications system. Fujitsu, Murphy & King P C, August 30, 2011: US08009614 (6 worldwide citation)

A home agent used in a mobile communications system conforming to Mobile IP is disclosed. A mobile node belongs to the home agent, and the home agent has a global IP address that is a home address common to a plurality of mobile nodes. The home agent includes: an interface unit configured to route a ...