Patents by Inventor Changfeng Zhao

Changfeng Zhao 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).

  • IDENTIFIERS FOR SPOKE-PES IN HUB-SPOKE NETWORKS
    Publication number: 20150304174
    Abstract: A method for allocating identifiers to Spoke-PEs in a Hub-Spoke network. A same private network identifier is allocated to the Spoke-PEs to identity the Hub-Spoke network. A unique service identifier is allocated to the Spoke-PEs in the Hub-Spoke network, respectively, to uniquely identify the Spoke-PEs in the Hub-Spoke network.
    Type: Application
    Filed: November 8, 2013
    Publication date: October 22, 2015
    Inventor: Changfeng Zhao
  • Recovery of Dynamic Host Configuration Protocol IP Addresses
    Publication number: 20140344444
    Abstract: Recovery of an Internet Protocol (IP) address allocated to a client using Dynamic Host Configuration Protocol (DHCP) is provided. Media Access Control (MAC) address and the IP address of the client are stored. When the client is determined as being offline, MAC address and IP address of the client are determined and a DHCP release message carrying the IP address of the client is sent to an address allocation server. The client is determined as being offline based on a shutdown status of a port to which the client is connected. The port may be on the relay device, or an access device that connects the client and the relay device.
    Type: Application
    Filed: March 4, 2014
    Publication date: November 20, 2014
    Applicant: Hangzhou H3C Technologies Co., Ltd.
    Inventors: Wenguo Wu, Changfeng Zhao, Leifang Li