Patents by Inventor Stephen C. Hanka

Stephen C. Hanka 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).

  • System and method for virtual chassis split prevention
    Patent number: 9148390
    Abstract: A virtual chassis system includes a plurality of network nodes configured with a master virtual chassis address. The network nodes are connected by virtual fabric link (VFLs) that provide a connection for exchange of packets between the network nodes. The virtual chassis system is operable to provide warnings to help prevent a virtual chassis split event in response to an administrative action. The topology of the virtual chassis system is analyzed to determine the possible impact of one or more administrative actions. Based on this analysis, a warning is generated when an administrative action is requested that may lead directly or indirectly to a virtual chassis split.
    Type: Grant
    Filed: November 12, 2012
    Date of Patent: September 29, 2015
    Assignee: Alcatel Lucent
    Inventors: Stephen C. Hanka, Roberto H. Jacob Da Silva, Shaofu Wu, Amy Chung-Hua Chang
  • System and method for a virtual chassis system
    Patent number: 9148389
    Abstract: A virtual chassis system includes a plurality of network nodes configured with a master virtual chassis address. The network nodes are connected by virtual fabric link (VFLs) that provide a connection for exchange of packets between the network nodes. The packets include source MAC addresses and associated hardware device information, such as source chassis ID, source network interface identifier and source port identifier information. The network nodes use this information to maintain synchronized MAC address tables for forwarding of packets in the virtual chassis system.
    Type: Grant
    Filed: November 12, 2012
    Date of Patent: September 29, 2015
    Assignee: Alcatel Lucent
    Inventors: Roberto H. Jacob Da Silva, Gregory G. Page, Surajit Bhattacharya, Chung-Hua Chang, Stephen C. Hanka, Steve Larsen, Christopher Francis Ravenscroft, Eric W. Tolliver, Anand Vinayagam, Shaofu Wu, Ignatius D. Santoso, Nalinakshan Kunnath, Stephen R. Bates
  • SYSTEM AND METHOD FOR A VIRTUAL CHASSIS SYSTEM
    Publication number: 20130077621
    Abstract: A virtual chassis system includes a plurality of network nodes configured with a master virtual chassis address. The network nodes are connected by virtual fabric link (VFLs) that provide a connection for exchange of packets between the network nodes. The packets include source MAC addresses and associated hardware device information, such as source chassis ID, source network interface identifier and source port identifier information. The network nodes use this information to maintain synchronized MAC address tables for forwarding of packets in the virtual chassis system.
    Type: Application
    Filed: November 12, 2012
    Publication date: March 28, 2013
    Inventors: Roberto H. Jacob Da Silva, Gregory G. Page, Surajit Bhattacharya, Chung-Hua Chang, Stephen C. Hanka, Steve Larsen, Christopher Francis Ravenscroft, Eric W. Tolliver, Anand Vinayagam, Shaofu Wu, Ignatius D. Santoso, Nalinakshan Kunnath, Stephen R. Bates
  • SYSTEM AND METHOD FOR VIRTUAL CHASSIS SPLIT PREVENTION
    Publication number: 20130073711
    Abstract: A virtual chassis system includes a plurality of network nodes configured with a master virtual chassis address. The network nodes are connected by virtual fabric link (VFLs) that provide a connection for exchange of packets between the network nodes. The virtual chassis system is operable to provide warnings to help prevent a virtual chassis split event in response to an administrative action. The topology of the virtual chassis system is analyzed to determine the possible impact of one or more administrative actions. Based on this analysis, a warning is generated when an administrative action is requested that may lead directly or indirectly to a virtual chassis split.
    Type: Application
    Filed: November 12, 2012
    Publication date: March 21, 2013
    Inventors: Stephen C. Hanka, Roberto H. Jacob Da Silva, Shaofu Wu, Amy Chung-Hua Chang