Patents by Inventor Hunan Cao

Hunan Cao 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).

  • Traffic flow redirection between border routers using routing encapsulation
    Patent number: 9755971
    Abstract: In response to receiving one or more packets from an interface, an anchoring border router classifies the traffic flow and either transmits the packets based upon the routing control table as usual, or determines that the packets of the traffic flow are to be forwarded to a forwarding border router. Upon determining that the packets are to be forwarded, the packets are encapsulated with a routing encapsulation key corresponding to a routing path and are forwarded from the anchoring border router to the forwarding border router via a routing encapsulation tunnel. When a forwarding border router receives the redirected packets over the routing encapsulation tunnel, the forwarding border router removes the routing encapsulation key from the packets of the traffic flow and transmits the packets via a routing path corresponding to the routing encapsulation key.
    Type: Grant
    Filed: February 12, 2016
    Date of Patent: September 5, 2017
    Assignee: Cisco Technology, Inc.
    Inventors: Xiaorong Wang, Dapeng Liu, Hunan Cao, Hongbo Xia
  • Traffic Flow Redirection between Border Routers using Routing Encapsulation
    Publication number: 20160164782
    Abstract: In response to receiving one or more packets from an interface, an anchoring border router classifies the traffic flow and either transmits the packets based upon the routing control table as usual, or determines that the packets of the traffic flow are to be forwarded to a forwarding border router. Upon determining that the packets are to be forwarded, the packets are encapsulated with a routing encapsulation key corresponding to a routing path and are forwarded from the anchoring border router to the forwarding border router via a routing encapsulation tunnel. When a forwarding border router receives the redirected packets over the routing encapsulation tunnel, the forwarding border router removes the routing encapsulation key from the packets of the traffic flow and transmits the packets via a routing path corresponding to the routing encapsulation key.
    Type: Application
    Filed: February 12, 2016
    Publication date: June 9, 2016
    Inventors: Xiaorong Wang, Dapeng Liu, Hunan Cao, Hongbo Xia
  • Traffic flow redirection between border routers using routing encapsulation
    Patent number: 9331941
    Abstract: In response to receiving one or more packets from an interface, an anchoring border router classifies the traffic flow and either transmits the packets based upon the routing control table as usual, or determines that the packets of the traffic flow are to be forwarded to a forwarding border router. Upon determining that the packets are to be forwarded, the packets are encapsulated with a routing encapsulation key corresponding to a routing path and are forwarded from the anchoring border router to the forwarding border router via a routing encapsulation tunnel. When a forwarding border router receives the redirected packets over the routing encapsulation tunnel, the forwarding border router removes the routing encapsulation key from the packets of the traffic flow and transmits the packets via a routing path corresponding to the routing encapsulation key.
    Type: Grant
    Filed: August 12, 2013
    Date of Patent: May 3, 2016
    Assignee: Cisco Technology, Inc.
    Inventors: Xiaorong Wang, Dapeng Liu, Hunan Cao, Hongbo Xia
  • Traffic Flow Redirection between Border Routers using Routing Encapsulation
    Publication number: 20150043348
    Abstract: In response to receiving one or more packets from an interface, an anchoring border router classifies the traffic flow and either transmits the packets based upon the routing control table as usual, or determines that the packets of the traffic flow are to be forwarded to a forwarding border router. Upon determining that the packets are to be forwarded, the packets are encapsulated with a routing encapsulation key corresponding to a routing path and are forwarded from the anchoring border router to the forwarding border router via a routing encapsulation tunnel. When a forwarding border router receives the redirected packets over the routing encapsulation tunnel, the forwarding border router removes the routing encapsulation key from the packets of the traffic flow and transmits the packets via a routing path corresponding to the routing encapsulation key.
    Type: Application
    Filed: August 12, 2013
    Publication date: February 12, 2015
    Applicant: Cisco Technology, Inc.
    Inventors: Xiaorong Wang, Dapeng Liu, Hunan Cao, Hongbo Xia