Patents Assigned to CPlane Inc.
  • Patent number: 6392989
    Abstract: Method of providing a recovery plan for a connection in a communications network when the connection is disrupted by a failure of a switch, switch or link in the network. In a provisioning phase, a primary plan and recovery plan for a connection to be protected in a communications network are developed. Forwarding information in the form of mapping or forwarding tables is derived from the plans and is distributed to each of the switches in the network. In the event of a failure each switch receives notice of the failure and switches to the recovery plan related to the failure. If and when the failure is repaired or cleared, each switch then switches back to its primary plan. Determining a recovery plan during the provisioning phase is based on the rule that a unit of failure is a switch or group of switches in the network rather than a link, regardless of the actual cause of the failure.
    Type: Grant
    Filed: June 15, 2000
    Date of Patent: May 21, 2002
    Assignee: CPlane Inc.
    Inventors: Paul Wenceslas Jardetzky, Jaroslaw Joseph Sydir, Balaji Srinivasan