Patents by Inventor Giuseppe F. Italiano

Giuseppe F. Italiano 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).

  • Restoration for virtual private networks
    Patent number: 8028050
    Abstract: Restoration is provided in a communication system having two or more VPN endpoints coupled together through a network comprising a number of nodes interconnected through edges. VPN endpoints coupled through the network are adapted to communicate through a single connection with multiple other VPN endpoints. The single connection may be a VPN hose connection. A restoration topology, comprising backup edges corresponding to primary edges in the network, is determined for the network. A given primary edge is replaced with one or more backup edges if the given primary edge fails. A graph may represent the network and a tree may represent the connections in the network for VPNs connecting the VPN endpoints. The graph can be reduced to a second graph by determining shortest paths between each node in the tree and creating the backup edges from the shortest paths. The second graph can be reduced to a third graph by adding additional backup edges from tree nodes having non-tree edges to least common ancestor nodes.
    Type: Grant
    Filed: June 13, 2003
    Date of Patent: September 27, 2011
    Assignee: Alcatel-Lucent USA Inc.
    Inventors: Giuseppe F. Italiano, Rajeev Rastogi, Bulent Yener
  • Restoration for virtual private networks
    Publication number: 20040255049
    Abstract: Restoration is provided in a communication system having two or more VPN endpoints coupled together through a network comprising a number of nodes interconnected through edges. VPN endpoints coupled through the network are adapted to communicate through a single connection with multiple other VPN endpoints. The single connection may be a VPN hose connection. A restoration topology, comprising backup edges corresponding to primary edges in the network, is determined for the network. A given primary edge is replaced with one or more backup edges if the given primary edge fails. A graph may represent the network and a tree may represent the connections in the network for VPNs connecting the VPN endpoints. The graph can be reduced to a second graph by determining shortest paths between each node in the tree and creating the backup edges from the shortest paths. The second graph can be reduced to a third graph by adding additional backup edges from tree nodes having non-tree edges to least common ancestor nodes.
    Type: Application
    Filed: June 13, 2003
    Publication date: December 16, 2004
    Inventors: Giuseppe F. Italiano, Rajeev Rastogi, Bulent Yener