Patents by Inventor Bernard E. Volz

Bernard E. Volz 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).

  • Recovering lost device information in cable networks
    Patent number: 10027622
    Abstract: In one embodiment, methods are described for recovering lost customer premises equipment (CPE) information on a cable modem termination system (CMTS) in the presence of only Dynamic Host Control Protocol Version 6 (DHCPv6) CONFIRM. A CMTS purges routing information for an Internet Protocol Version 6 (IPv6) node, such as a CPE router, in response to detecting an interface reset for the IPv6 node. IPv6 addresses and prefixes information for the IPv6 node is gleaned from a DHCPv6 CONFIRM message received from the IPv6 node. By sending portions of the IPv6 addresses and prefixes information within a DHCPv6 LEASEQUERY message, a DHCPv6 CONFIRM message with an embedded DHCPv6 LEASEQUERY message, or a DHCPv6 CONFIRM message with an Interface-ID option, a reply message can be received that contains the purged routing information for the IPv6 node.
    Type: Grant
    Filed: January 31, 2013
    Date of Patent: July 17, 2018
    Assignee: CISCO TECHNOLOGY, INC.
    Inventors: Hemant Singh, William Beebee, Madhu Sudan, Bernard E. Volz, Chad Mikkelson
  • RECOVERING LOST DEVICE INFORMATION IN CABLE NETWORKS
    Publication number: 20140215091
    Abstract: In one embodiment, methods are described for recovering lost customer premises equipment (CPE) information on a cable modem termination system (CMTS) in the presence of only Dynamic Host Control Protocol Version 6 (DHCPv6) CONFIRM. A CMTS purges routing information for an Internet Protocol Version 6 (IPv6) node, such as a CPE router, in response to detecting an interface reset for the IPv6 node. IPv6 addresses and prefixes information for the IPv6 node is gleaned from a DHCPv6 CONFIRM message received from the IPv6 node. By sending portions of the IPv6 addresses and prefixes information within a DHCPv6 LEASEQUERY message, a DHCPv6 CONFIRM message with an embedded DHCPv6 LEASEQUERY message, or a DHCPv6 CONFIRM message with an Interface-ID option, a reply message can be received that contains the purged routing information for the IPv6 node.
    Type: Application
    Filed: January 31, 2013
    Publication date: July 31, 2014
    Applicant: CISCO TECHNOLOGY, INC.
    Inventors: Hemant Singh, William Beebee, Madhu Sudan, Bernard E. Volz, Chad Mikkelson