Patents by Inventor Lucern K. Ma

Lucern K. Ma 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).

  • Patent number: 7656788
    Abstract: A method for managing a cluster of network devices, the cluster includes a command network device and at least one member network device, and the command network device has a commander IP address and a commander MAC address, includes: defining a standby group by assigning a virtual IP address and a virtual MAC address; selecting a first network device, which is the command device, for the standby group; selecting at least one second network device, which has an IP address, for the standby group; defining a standby priority for each network device in the standby group; and binding the standby group to the cluster, by replacing the commander IP address with the virtual IP address and replacing the commander MAC address with the virtual MAC address. Upon the binding, the network device with a highest priority becomes an active commander, and the network device with a second highest priority becomes a standby commander.
    Type: Grant
    Filed: February 14, 2005
    Date of Patent: February 2, 2010
    Assignee: Cisco Technology, Inc.
    Inventors: Lucern K. Ma, Murali Duvvury
  • Patent number: 6856591
    Abstract: A method provides high reliability to management of a cluster of network devices. The cluster including a command network device and at least one member network device. The command network device has a commander IP address and a commander MAC address. The method includes: defining a standby group by assigning a virtual IP address and a virtual MAC address; selecting a first network device; which is the command network device, for the standby group; selecting at least one second network device, which has an IP address, for the standby group; defining a standby priority for each network device in the standby group; and binding the standby group to the cluster, by replacing the commander IP address with the virtual IP address and replacing the commander MAC address with the virtual MAC address. Upon the binding, the network device with a highest priority becomes an active commander, and the network device with a second highest priority becomes a standby commander.
    Type: Grant
    Filed: December 15, 2000
    Date of Patent: February 15, 2005
    Assignee: Cisco Technology, Inc.
    Inventors: Lucern K. Ma, Murali Duvvury