Patents by Inventor Heng-Hui Debbie Chu

Heng-Hui Debbie Chu 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).

  • High availability using full memory replication between virtual machine instances on a network device
    Patent number: 8806266
    Abstract: Techniques are described for providing high availability for a network device, e.g., a router, using full memory replication between a primary virtual machine (VM) and a standby VM running on the network device. In one example, the techniques provide hot-standby high availability for a router by initializing a primary VM and a standby VM on the router at the same time. In another example, the techniques provide high availability for the router by initializing a standby VM on the router upon detecting a failure of the primary VM. In both examples, the primary VM controls the routing functionality and periodically stores a full memory state. Upon a failure of the primary VM, a hypervisor may perform a full memory replication between the primary VM and the standby VM. The standby VM may then take control of the routing functionality at the last stored state of the memory.
    Type: Grant
    Filed: September 28, 2011
    Date of Patent: August 12, 2014
    Assignee: Juniper Networks, Inc.
    Inventors: Hui Qu, Mu Lin, Shine-Chu Wang, Heng-Hui Debbie Chu, Leyi Zhang, Zi Zhou, Joel Obstfeld