Patents by Inventor Russell Eugene Gardo

Russell Eugene Gardo 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).

  • Method and system for emulating an ethernet link over a sonet path
    Patent number: 7653526
    Abstract: A method and system for emulating an Ethernet link over a Sonet path to provide link integrity is disclosed. The method generally includes receiving an error code at a local Ethernet port upon detection of a link failure at a remote Ethernet port. The error code is received over a Sonet path in a Sonet path overhead. If the error code is still present after a specified period of time, the local Ethernet port is disabled. Methods for providing link stability and link availability are also disclosed.
    Type: Grant
    Filed: August 16, 2002
    Date of Patent: January 26, 2010
    Assignee: Cisco Technology, Inc.
    Inventors: Thomas Eric Ryle, Sanjeev Rampal, Jimmy Philip Ervin, Charles Allen Carriker, Jr., Russell Eugene Gardo
  • Method and system within a computer network for maintaining source-route information at a router bypassed by shortcut communication
    Patent number: 6452921
    Abstract: In a data communication internetwork including a source station, an end station, and a default router for the source station, a default communication path including the default router is defined between the source station and the destination station. During operation of the data communication internetwork, a shortcut data communication path by passing the default router is established between the source station and the destination station, such that data packets transmitted by the source station are not received by the default router. After the shortcut communication path has been established, a control frame containing source-route information regarding the source station is transmitted to the router, and the source-route information is stored at the router.
    Type: Grant
    Filed: November 24, 1998
    Date of Patent: September 17, 2002
    Assignee: International Business Machines Corporation
    Inventors: Cedell Adam Alexander, Jr., Russell Eugene Gardo, Brahmanand Kumar Gorti, Olen Lee Stokes, Jr.
  • Next hop resolution protocol cut-through to LANs
    Patent number: 6189041
    Abstract: A method is implemented by which a Logical IP subnetwork attached (LIS) Next Hop Resolution Protocol (NHRP) client or an Emulated LAN (ELAN) subnetwork attached NHRP client in an Asynchronous Transfer Mode (ATM) network can send data to a destination LAN Emulation Client (LEC) on a different ISO layer-3 subnetwork via a data-direct Virtual Channel Connection. The method enables such a IP subnetwork attached NHRP clients to obtain the ATM address corresponding to the destination station by using the vendor-private extension within an NHRP packet. The NHRP client uses the ATM address to build a data-direct VCC over which it unicasts data bound for the destination station. The NHRP client appears to the destination LEC as any other LEC on its ELAN would appear.
    Type: Grant
    Filed: November 12, 1997
    Date of Patent: February 13, 2001
    Assignee: International Business Machines Corporation
    Inventors: Norman Eugene Cox, Russell Eugene Gardo, Stephen W. Piucci, Sonia K. Rovner