Patents by Inventor Duc M. Pham

Duc M. Pham 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 verifying a software upgrade for a communication device
    Patent number: 6950863
    Abstract: A method and apparatus for verifying a software upgrade for a communication device identifies transient variables that may change their value over time. These transient variables are then compared to change variables produced by different versions of software to verify the upgrade.
    Type: Grant
    Filed: December 21, 2000
    Date of Patent: September 27, 2005
    Assignee: Cisco Technology, Inc.
    Inventors: Duc M. Pham, Hang Zhang
  • Network management system and method of operation
    Patent number: 6687748
    Abstract: A network management server manages multiple network devices coupled to a communication network. A simulation device coupled to the communication network uses virtual network addresses to simulate multiple network devices in two respects. First, the simulation device uses virtual network addresses to simulate the generation of alarm signals from multiple network devices in the network environment. Second, the simulation device uses virtual network addresses to simulate responses to polling requests issued by the network management server. In this respect, the simulation device simulates the operation of multiple network devices to test the scaleability, performance, and reliability of the network management server.
    Type: Grant
    Filed: January 4, 2000
    Date of Patent: February 3, 2004
    Assignee: Cisco Technology, Inc.
    Inventors: Hang Zhang, Avinash J. Marathe, Duc M. Pham