Patents by Inventor Sammy Chung

Sammy Chung 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).

  • Cooperative MAC learning/aging in highly distributed forwarding system
    Patent number: 8155150
    Abstract: A method may be performed by a device in a network, the device including multiple security process units (SPUs). The method includes receiving a packet over the network, the packet including a media access control (MAC) address, and assigning one SPU as the MAC address owner. The method also includes sending information about the MAC address to other SPUs within the device, storing the MAC address in a MAC table within each SPU, and initiating a MAC age query to confirm the MAC address has timed out among all SPUs. The MAC age query is passed via a logical ring of the SPUs beginning with the MAC address owner. If the MAC address is aged out at each SPU, the MAC address is deleted from each MAC table. If the MAC entry is still active, a different SPU is assigned as the MAC address owner.
    Type: Grant
    Filed: March 11, 2009
    Date of Patent: April 10, 2012
    Assignee: Juniper Networks, Inc.
    Inventors: Sammy Chung, Dongyi Jiang, Tsai-Zong Lin, Jin Shang, Anthony Ng