Patents by Inventor Yoji Ozawa

Yoji Ozawa has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20140165136
    Abstract: A management server which manages a tenant pattern being information for forming a tenant being an application system for executing a predetermined application by using computer resources within a computer system, the tenant pattern including a configuration item and an ID pool, the management server having: pattern parts information for managing the configuration item as a pattern part that forms the tenant pattern; validation rule information for storing a detail of validation processing for a composition of the tenant pattern; and the management server further comprising: a tenant pattern generation unit; a tenant designing unit for designing a composition of the tenant, and generating a configuration detail for actually building the tenant on the computer system; and a validation execution unit for executing the validation processing for the tenant pattern and the configuration detail based on the validation rule information.
    Type: Application
    Filed: December 9, 2013
    Publication date: June 12, 2014
    Applicant: Hitachi, Ltd.
    Inventors: Yoji OZAWA, Yukio OGAWA, Yoshiko YASUDA, Yosuke HIMURA
  • Patent number: 8605593
    Abstract: A transport control server coupled to a plurality of nodes in a network through which a plurality of traffics passes through is provided. The transport control server is configured to receive bandwidth information from each of the nodes when the traffics pass through the nodes. For each of the traffics, the transport control server calculates bandwidths at an entry edge node and at an exit edge node based on the received bandwidth information. The transport control server defines as a first traffic, based on the calculated bandwidths at the entry edge node and the exit edge node, a traffic having a discarded bandwidth that is larger than a first predetermined bandwidth. Also, the transport control server defines as a second traffic, based on the received bandwidth information, a first traffic having a bandwidth at the two or more nodes that exceeds a specified second bandwidth.
    Type: Grant
    Filed: August 11, 2011
    Date of Patent: December 10, 2013
    Assignee: Hitachi, Ltd.
    Inventors: Hitoshi Yabusaki, Daisuke Matsubara, Yukiko Takeda, Yoji Ozawa
  • Patent number: 8588217
    Abstract: A transport control server (100) wherein a conversion table including a pre-conversion identifier and a post-conversion identifier, and a conversion type indicating the aggregate/transfer of a path are previously stored for each two segments that are connected to each other. When devices (111, 118) at the endpoints of the path are specified, the transport control server (100) calculates the route between the devices to identify one or a plurality of gateway nodes (112 to 117) on the route. Also, the transport control server (100) acquires from a storage unit the pre-conversion identifier, post-conversion identifier, and conversion type corresponding to two segments that are connected by the identified nodes for each of the identified nodes, and sets the acquired identifiers and conversion type to each of the nodes.
    Type: Grant
    Filed: March 2, 2010
    Date of Patent: November 19, 2013
    Assignee: Hitachi, Ltd.
    Inventors: Daisuke Matsubara, Hitoshi Yabusaki, Yoji Ozawa
  • Patent number: 8533316
    Abstract: Provided is a management computer which reduces the workload of an administrator of a network in setting node when the normal network is changed to a network with redundancy. The management computer manages a plurality of nodes that constitute a network accommodating VLANs. The plurality of nodes include a first node and a second node which make a redundancy pair and which divides the network into an active path and a standby path. The management computer stores port management information showing connection relations for respective nodes and identifiers of VLANs allocated to ports of the nodes, and creates the redundancy pair by updating the port management information of the first node such that a VLAN allocated to one of ports of a connected node that is connected to the first node is allocated to one of ports of the first node that is connected to the connected node.
    Type: Grant
    Filed: February 22, 2008
    Date of Patent: September 10, 2013
    Assignee: Hitachi, Ltd.
    Inventors: Hideki Okita, Yoji Ozawa
  • Publication number: 20130111036
    Abstract: A management method for a network system, the method comprising: acquiring, by the management server, a physical composition element and a virtual composition element of the computer resource and generating device information and a physical connection of the computer resource and a virtualized connection and generating connection information; receiving, tenant patterns for holding a template of a configuration item for each logical node, a parameter of the configuration item, a definition for calculating the parameter, and storing the plurality of tenant patterns; storing, mapping information in which a correlation between a node of each of the plurality of tenant patterns and a composition element of the device information; receiving, an input of the plurality of tenant patterns and a type of an operation; selecting, the composition element of the device information for each node; generating, configuration contents of a network.
    Type: Application
    Filed: August 7, 2012
    Publication date: May 2, 2013
    Applicant: HITACHI, LTD.
    Inventors: Yoji Ozawa, Eri Kawai, Akihiro Koizumi, Yoshiko Yasuda, Yosuke Himura
  • Patent number: 8356093
    Abstract: When a failure occurs in a network or in a network apparatus, a connection state of the network is changed. There is provided a network configuration estimating apparatus for knowing logical route information quickly after a failure occurrence in accordance with information collected from network apparatuses, although it is conventionally difficult to know this information quickly. The network configuration estimating apparatus executes: a process of generating network configuration information such as physical and logical topologies from information collected in advance; a process of monitoring a network failure; a process of calculating a network configuration to be estimated after a network failure occurrence, from the network configuration information generated in advance and network failure information; a process of visually displaying the calculated network configuration; and a process of managing history of calculated network configurations.
    Type: Grant
    Filed: July 21, 2010
    Date of Patent: January 15, 2013
    Assignee: Hitachi, Ltd.
    Inventors: Akihiro Koizumi, Eri Kawai, Yoji Ozawa
  • Publication number: 20120233503
    Abstract: A network system configured from a test device that executes a test including a continuity test and a performance test of a network configured from a plurality of transfer devices and a management server that requests an execution of the test for the test device, in this way, one or more backup session used for executing the test is selected from a plurality of sessions, the test is executed for a processing interval in a success, a next test is executed by the backup session when the processing time for the test exceeds over a specified time, thereby, a large number of tests can be executed and the test can be executed regularly even when the processing time becomes longer caused by a failure etc.
    Type: Application
    Filed: February 8, 2012
    Publication date: September 13, 2012
    Applicant: HITACHI, LTD.
    Inventors: Yoji OZAWA, Eri KAWAI, Akihiro KOIZUMI
  • Publication number: 20120069739
    Abstract: There is a need to extract a traffic related to congestion in consideration of an entire network. Multiple traffics are received from multiple nodes. There is available information about bandwidths for the traffics passing through nodes. Bandwidths for the traffics at an entry node and an exit node are extracted from the bandwidth information. Each traffic first passes through the entry node and last passes through the exit node. A bandwidth is dropped when the traffic passes through the nodes. The dropped bandwidth is calculated based on the extracted bandwidths for the traffics at the entry node and the exit node. The calculated bandwidth to be dropped is compared with a specified first bandwidth. One or more first traffics are extracted because of having the dropped bandwidth larger than the first bandwidth. Based on band information, a second traffic is extracted from the extracted first traffic.
    Type: Application
    Filed: August 11, 2011
    Publication date: March 22, 2012
    Applicant: Hitachi, Ltd.
    Inventors: Hitoshi YABUSAKI, Daisuke Matsubara, Yukiko Takeda, Yoji Ozawa
  • Publication number: 20120051263
    Abstract: A network system, management server, and OAM test management method for grouping the virtual networks, selecting a test target for each group, and lowering the network load and the operating load in the OAM testing. Grouping the multiple virtual networks based on their physical topology and selecting a representative virtual network for each group, allows selecting a test target virtual network from among the representative virtual networks for the virtual network selected by the operator and executing tests.
    Type: Application
    Filed: August 5, 2011
    Publication date: March 1, 2012
    Applicant: Hitachi, Ltd.
    Inventors: Yoji OZAWA, Eri KAWAI, Akihiro KOIZUMI
  • Publication number: 20120020357
    Abstract: A transport control server (100) wherein a conversion table including a pre-conversion identifier and a post-conversion identifier, and a conversion type indicating the aggregate/transfer of a path are previously stored for each two segments that are connected to each other. When devices (111, 118) at the endpoints of the path are specified, the transport control server (100) calculates the route between the devices to identify one or a plurality of gateway nodes (112 to 117) on the route. Also, the transport control server (100) acquires from a storage unit the pre-conversion identifier, post- conversion identifier, and conversion type corresponding to two segments that are connected by the identified nodes for each of the identified nodes, and sets the acquired identifiers and conversion type to each of the nodes.
    Type: Application
    Filed: March 2, 2010
    Publication date: January 26, 2012
    Applicant: HITACHI, LTD.
    Inventors: Daisuke Matsubara, Hitoshi Yabusaki, Yoji Ozawa
  • Patent number: 8081640
    Abstract: Provided is a network system, comprising: a plurality of network devices; a network constructed from the plurality of network devices; and a management server managing the network. The plurality of network devices include a first network device in which a filter assigned as a target of reconfiguration is set and a second network device coupled at a lower level of the first network device. The management server obtains topology of the network from the plurality of network devices; reconfigures, by referring to the obtained network topology, the filters of the first and second network device such that a range in which a packet can be forwarded through a reconfiguring filter set in the first network device is made equal to a range in which a packet can be forwarded through the filter set in the second network device; and sets the reconfigured filters into the network devices.
    Type: Grant
    Filed: August 18, 2008
    Date of Patent: December 20, 2011
    Assignee: Hitachi, Ltd.
    Inventors: Yoji Ozawa, Hideki Okita
  • Publication number: 20110093579
    Abstract: When a failure occurs in a network or in a network apparatus, a connection state of the network is changed. There is provided a network configuration estimating apparatus for knowing logical route information quickly after a failure occurrence in accordance with information collected from network apparatuses, although it is conventionally difficult to know this information quickly. The network configuration estimating apparatus executes: a process of generating network configuration information such as physical and logical topologies from information collected in advance; a process of monitoring a network failure; a process of calculating a network configuration to be estimated after a network failure occurrence, from the network configuration information generated in advance and network failure information; a process of visually displaying the calculated network configuration; and a process of managing history of calculated network configurations.
    Type: Application
    Filed: July 21, 2010
    Publication date: April 21, 2011
    Inventors: Akihiro KOIZUMI, Eri KAWAI, Yoji OZAWA
  • Patent number: 7826393
    Abstract: Provided is a computer system capable of cutting the cost of running and managing a company network and improving the security of the network by reducing wrong settings and skipped settings due to human factor. The computer system has switches which constitute a network, a management computer which is connected to the network and manages the network, and clients which are connected to the switches. The management computer sets each switch such that client authentication is executed at port provided in the switch that can be connected to the client. The client authentication is processing of verifying whether the client has the right to connect to the network.
    Type: Grant
    Filed: June 26, 2007
    Date of Patent: November 2, 2010
    Assignee: Hitachi, Ltd.
    Inventors: Hideki Okita, Yoji Ozawa, Takashi Sumiyoshi
  • Patent number: 7801060
    Abstract: A network management apparatus and a network management system are provided which are capable of reducing setting workloads required when an initial setting operation of a network communication apparatus is performed, and a network structure is changed. The network management apparatus acquires information as to respective network communication apparatus which belong to the same network when an operation of the network is commenced, or when a structure of the network is changed. Then, the network management apparatus determines a concrete operating content of said network communication apparatus based upon the acquired information and an operation policy so as to set the determined operating content. Also, the network management apparatus is equipped with a GUI (Graphical User Interface) used to set a role of the network communication apparatus by a manner.
    Type: Grant
    Filed: October 4, 2006
    Date of Patent: September 21, 2010
    Assignee: Hitachi, Ltd.
    Inventors: Takashi Sumiyoshi, Hideki Okita, Yoji Ozawa
  • Publication number: 20100153532
    Abstract: A reservation processing is executed according to the configuration request to VPN and network device to inform a user's terminal of scheduled period. In a network system including plural network devices for transmitting a packet and a management server, plural logical networks (VPNs) are formed on the plural network devices. The management server receives a configuration request including configuration data for VPN and configuration desired time from a user's terminal to generate the configuration data for the network device from the configuration data for the VPN. The management server refers to a configuration reservation table to confirm whether free time is available in the same period about all target network devices. If free time is available, the management server makes configuration reservation and configures the target network device in the reserved time. The management server notifies the user's terminal of the reserved time.
    Type: Application
    Filed: December 15, 2009
    Publication date: June 17, 2010
    Inventors: Yoji Ozawa, Kazuma Yumoto, Tatsuhiko Miyata, Eri Kawai
  • Publication number: 20090109970
    Abstract: Provided is a network system, comprising: a plurality of network devices; a network constructed from the plurality of network devices; and a management server managing the network. The plurality of network devices include a first network device in which a filter assigned as a target of reconfiguration is set and a second network device coupled at a lower level of the first network device. The management server obtains topology of the network from the plurality of network devices; reconfigures, by referring to the obtained network topology, the filters of the first and second network device such that a range in which a packet can be forwarded through a reconfiguring filter set in the first network device is made equal to a range in which a packet can be forwarded through the filter set in the second network device; and sets the reconfigured filters into the network devices.
    Type: Application
    Filed: August 18, 2008
    Publication date: April 30, 2009
    Inventors: Yoji Ozawa, Hideki Okita
  • Publication number: 20080267090
    Abstract: Provided is a management computer which reduces the workload of an administrator of a network in setting node when the normal network is changed to a network with redundancy. The management computer manages a plurality of nodes that constitute a network accommodating VLANs. The plurality of nodes include a first node and a second node which make a redundancy pair and which divides the network into an active path and a standby path. The management computer stores port management information showing connection relations for respective nodes and identifiers of VLANs allocated to ports of the nodes, and creates the redundancy pair by updating the port management information of the first node such that a VLAN allocated to one of ports of a connected node that is connected to the first node is allocated to one of ports of the first node that is connected to the connected node.
    Type: Application
    Filed: February 22, 2008
    Publication date: October 30, 2008
    Inventors: Hideki Okita, Yoji Ozawa
  • Publication number: 20080056161
    Abstract: Provided is a computer system capable of cutting the cost of running and managing a company network and improving the security of the network by reducing wrong settings and skipped settings due to human factor. The computer system has switches which constitute a network, a management computer which is connected to the network and manages the network, and clients which are connected to the switches. The management computer sets each switch such that client authentication is executed at port provided in the switch that can be connected to the client. The client authentication is processing of verifying whether the client has the right to connect to the network.
    Type: Application
    Filed: June 26, 2007
    Publication date: March 6, 2008
    Inventors: Hideki Okita, Yoji Ozawa, Takashi Sumiyoshi
  • Publication number: 20070177604
    Abstract: The invention reduces the initial setting cost, the management cost, and reconfiguration cost of QoS guarantee for network devices. A management device has a control unit and the storage unit. The control unit obtains the number of terminals contained in the network system and connection relations of the network system at the time of initial setting for QoS guarantee. A control unit stores an operation policy which an administrator inputs. The control unit creates QoS control configuration for each connection path between adjacent two network devices using the number of terminals in the network system, the connection relations, and the operation policy. And QoS control configuration is the information for controlling the QoS guarantee of network devices. And the control unit sets the QoS control configuration in the network devices.
    Type: Application
    Filed: December 21, 2006
    Publication date: August 2, 2007
    Inventors: Yoji Ozawa, Hideki Okita, Takashi Sumiyoshi, Kenichi Sakamoto
  • Publication number: 20070076634
    Abstract: A network management apparatus and a network management system are provided which are capable of reducing setting workloads required when an initial setting operation of a network communication apparatus is performed, and a network structure is changed. The network management apparatus acquires information as to respective network communication apparatus which belong to the same network when an operation of the network is commenced, or when a structure of the network is changed. Then, the network management apparatus determines a concrete operating content of said network communication apparatus based upon the acquired information and an operation policy so as to set the determined operating content. Also, the network management apparatus is equipped with a GUI (Graphical User Interface) used to set a role of the network communication apparatus by a manner.
    Type: Application
    Filed: October 4, 2006
    Publication date: April 5, 2007
    Inventors: Takashi Sumiyoshi, Hideki Okita, Yoji Ozawa