Patents by Inventor Xiaopu Zhang

Xiaopu Zhang 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).

  • Pro-active mechanism to detect LISP movable silent host
    Patent number: 10530735
    Abstract: A network device may receive a request seeking a location identifier for an endpoint identifier from a first router. The network device may determine that the endpoint identifier belongs to a dynamic endpoint identifier range associated with a plurality of routers. The request may be forwarded to the plurality of routers to discover a host having the endpoint identifier and a notification may be received from one of the plurality of routers reporting discovery of the host having the endpoint identifier. The network device may send an identifier of the one of the plurality of routers which reports discovery of the host to the first router as the location identifier for the endpoint identifier.
    Type: Grant
    Filed: September 10, 2015
    Date of Patent: January 7, 2020
    Assignee: Cisco Technology, Inc.
    Inventors: Xiaopu Zhang, Yuefeng Jiang, Fang Yang
  • Proactive detection of host status in a communications network
    Patent number: 9641417
    Abstract: In one embodiment, a method includes receiving a packet from a host at a first hop router in a network site, the first hop router in communication with a core network and operable to encapsulate packets received from the host for transmission to a remote network site, setting a status for the host in a table at the first hop router as active, starting a timer for the host at the first hop router, transmitting a probe message from the first hop router to the host if a packet is not received at the first hop router from the host before the timer expires, updating the status of the host at the table based on whether a response message is received from the host, and using the host status to detect host migration. An apparatus and logic are also disclosed herein.
    Type: Grant
    Filed: December 15, 2014
    Date of Patent: May 2, 2017
    Assignee: Cisco Technology, Inc.
    Inventors: Yuefeng Jiang, Xiaopu Zhang, Fang Yang
  • Pro-Active Mechanism to Detect LISP Movable Silent Host
    Publication number: 20170078241
    Abstract: A network device may receive a request seeking a location identifier for an endpoint identifier from a first router. The network device may determine that the endpoint identifier belongs to a dynamic endpoint identifier range associated with a plurality of routers. The request may be forwarded to the plurality of routers to discover a host having the endpoint identifier and a notification may be received from one of the plurality of routers reporting discovery of the host having the endpoint identifier. The network device may send an identifier of the one of the plurality of routers which reports discovery of the host to the first router as the location identifier for the endpoint identifier.
    Type: Application
    Filed: September 10, 2015
    Publication date: March 16, 2017
    Inventors: Xiaopu Zhang, Yuefeng Jiang, Fang Yang
  • Scalable network virtualization with aggregate endpoints
    Patent number: 9596099
    Abstract: Techniques provided herein use aggregate endpoints in a virtual overlay network. In general, aggregate endpoints operate as a single receiving entity for certain packets/frames sent between different physical proximities of the virtual overlay network.
    Type: Grant
    Filed: May 6, 2015
    Date of Patent: March 14, 2017
    Assignee: Cisco Technology, Inc.
    Inventors: Yibin Yang, Liqin Dong, Chia Tsai, Weng Hong Chan, Yuchen Zhou, Fang Yang, Jeffrey Cai, Yuefeng Jiang, Xiaopu Zhang
  • Scalable Network Virtualization With Aggregate Endpoints
    Publication number: 20160330046
    Abstract: Techniques provided herein use aggregate endpoints in a virtual overlay network. In general, aggregate endpoints operate as a single receiving entity for certain packets/frames sent between different physical proximities of the virtual overlay network.
    Type: Application
    Filed: May 6, 2015
    Publication date: November 10, 2016
    Inventors: Yibin Yang, Liqin Dong, Chia Tsai, Weng Hong Chan, Yuchen Zhou, Fang Yang, Jeffrey Cai, Yuefeng Jiang, Xiaopu Zhang
  • PROACTIVE DETECTION OF HOST STATUS IN A COMMUNICATIONS NETWORK
    Publication number: 20160173356
    Abstract: In one embodiment, a method includes receiving a packet from a host at a first hop router in a network site, the first hop router in communication with a core network and operable to encapsulate packets received from the host for transmission to a remote network site, setting a status for the host in a table at the first hop router as active, starting a timer for the host at the first hop router, transmitting a probe message from the first hop router to the host if a packet is not received at the first hop router from the host before the timer expires, updating the status of the host at the table based on whether a response message is received from the host, and using the host status to detect host migration. An apparatus and logic are also disclosed herein.
    Type: Application
    Filed: December 15, 2014
    Publication date: June 16, 2016
    Applicant: CISCO TECHNOLOGY, INC.
    Inventors: Yuefeng Jiang, Xiaopu Zhang, Fang Yang