Patents by Inventor Keiichirou Yamate

Keiichirou Yamate 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).

  • Arrangements for constructing a virtual private network (VPN) using forwarding techniques
    Patent number: 8379649
    Abstract: An extranet direct route allowing extranet forwarding to a directly linked device is written in a layer 2-layer 3-integrated forwarding table. The procedure of introducing a layer 3 address-to-layer 2 address correspondence relation table entry into the layer 2-layer 3-integrated forwarding table searches the layer 2-layer 3-integrated forwarding table with a layer 3 address of the correspondence relation table entry and a layer 3 interface as search keys to retrieve any forwarding entry relating to an extranet direct route as a forwarding destination. The procedure subsequently extracts a VRF of each retrieved forwarding entry and introduces the correspondence relation table entry for the extracted VRF into the layer 2-layer 3-integrated forwarding table.
    Type: Grant
    Filed: June 29, 2009
    Date of Patent: February 19, 2013
    Assignee: Alaxala Networks Corporation
    Inventors: Keiichirou Yamate, Shinji Nozaki, Masaya Arai
  • NETWORK RELAY APPARATUS, NETWORK SYSTEM, AND CONTROL METHOD OF NETWORK RELAY APPARATUS
    Publication number: 20110164508
    Abstract: Network relay apparatus connected directly or indirectly to a first processing apparatus, a second processing apparatus, and a client apparatus, the network relay apparatus being configured to relay packet communication between the respective apparatuses, wherein one identical address is set in both the first processing apparatus and the second processing apparatus, and the client apparatus uses the first processing apparatus and the second processing apparatus.
    Type: Application
    Filed: January 4, 2011
    Publication date: July 7, 2011
    Inventors: MASAYA ARAI, Keiichirou Yamate, Shinji Nozaki
  • Forwarding Apparatus, Forwarding Method, and Computer Program Product
    Publication number: 20100080235
    Abstract: An extranet direct route allowing extranet forwarding to a directly linked device is written in a layer 2-layer 3-integrated forwarding table. The procedure of introducing a layer 3 address-to-layer 2 address correspondence relation table entry into the layer 2-layer 3-integrated forwarding table searches the layer 2-layer 3-integrated forwarding table with a layer 3 address of the correspondence relation table entry and a layer 3 interface as search keys to retrieve any forwarding entry relating to an extranet direct route as a forwarding destination. The procedure subsequently extracts a VRF of each retrieved forwarding entry and introduces the correspondence relation table entry for the extracted VRF into the layer 2-layer 3-integrated forwarding table.
    Type: Application
    Filed: June 29, 2009
    Publication date: April 1, 2010
    Inventors: Keiichirou Yamate, Shinji Nozaki, Masaya Arai