Patents by Inventor Leo Chun-Chuen Chan

Leo Chun-Chuen Chan 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).

  • Termination of a pseudowires on multiple line cards
    Patent number: 8848716
    Abstract: In one embodiment, line cards of packet switching or other network devices are configured for terminating pseudowires. Typically, this includes multiple line cards being configured for terminating a same pseudowire, which allows the corresponding pseudowire traffic to be received by any one of these multiple line cards. Each of these pseudowire-terminating line cards is typically configured to apply one or more features to a pseudowire packet. Examples of these features include, but are not limited to: Access Control List, Quality of Service, Netflow, and Lawful Intercept. For a received packet to be sent out one of these pseudowires, a two-stage lookup operation can be used to first identify the pseudowire over which to forward the packet; and a second lookup operation based on the pseudowire to identify forwarding information corresponding to a path through a network over which a corresponding pseudowire is configured.
    Type: Grant
    Filed: April 11, 2011
    Date of Patent: September 30, 2014
    Assignee: Cisco Technology, Inc.
    Inventors: Vijayan Ramakrishnan, Sami Boutros, Leo Chun-Chuen Chan, Reshad Rahman, Sundar Siddaramaiah Bettadahalli, Sivakumar Subramaniyan Ganapathy
  • Termination of a Pseudowires on Multiple Line Cards
    Publication number: 20120257629
    Abstract: In one embodiment, line cards of packet switching or other network devices are configured for terminating pseudowires. Typically, this includes multiple line cards being configured for terminating a same pseudowire, which allows the corresponding pseudowire traffic to be received by any one of these multiple line cards. Each of these pseudowire-terminating line cards is typically configured to apply one or more features to a pseudowire packet. Examples of these features include, but are not limited to: Access Control List, Quality of Service, Netflow, and Lawful Intercept. For a received packet to be sent out one of these pseudowires, a two-stage lookup operation can be used to first identify the pseudowire over which to forward the packet; and a second lookup operation based on the pseudowire to identify forwarding information corresponding to a path through a network over which a corresponding pseudowire is configured.
    Type: Application
    Filed: April 11, 2011
    Publication date: October 11, 2012
    Applicant: Cisco Technology, Inc., a corporation of California
    Inventors: Vijayan Ramakrishnan, Sami Boutros, Leo Chun-Chuen Chan, Reshad Rahman, Sundar Siddaramaiah Bettadahalli, Sivakumar Subramaniyan Ganapathy