Patents by Inventor Robert Sawaya

Robert Sawaya 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 link protection using shared SRLG association
    Patent number: 8576708
    Abstract: In one embodiment, certain SRLGs associated with members of a bundle are deemed to be “risk-free SRLGs”, i.e., SRLGs whose failure may not substantially impact the capacity of the bundle to carry traffic in a computer network. In a bandwidth unaware embodiment a number of active members of the bundle is identified for each SRLG, and a bandwidth aware embodiment further specifies an available bandwidth capacity for each SRLG to determine risk-free SRLGs. A backup path or tunnel may be established and utilized to protect a communication link as long as the SRLGs shared are deemed to be risk-free SRLGs.
    Type: Grant
    Filed: June 2, 2011
    Date of Patent: November 5, 2013
    Assignee: Cisco Technology, Inc.
    Inventors: Rakesh Gandhi, Eric W. Osborne, Prabhu Vaithilingam, Robert Sawaya, Junaid Israr
  • Soft preemption for minimizing preemptions in a network
    Patent number: 8462638
    Abstract: In an embodiment, a method is disclosed for minimizing soft preemptions of LSPs. Upon receiving a reservation message for an LSP whose requested bandwidth that exceeds the available bandwidth of downstream links, a network node may select a set of LSPs for soft preemption and share the selection with other nodes along their paths, both upstream and downstream. By coordinating the selection of LSPs to soft-preempt among nodes on the path, fewer LSPs may require soft preemption, which may result in minimizing excessive network disruptions, and thus, allowing the network to function more efficiently.
    Type: Grant
    Filed: March 31, 2011
    Date of Patent: June 11, 2013
    Assignee: Cisco Technology, Inc.
    Inventors: Rakesh Gandhi, Robert Sawaya, Tarek Saad, Junaid Israr
  • SYSTEM AND METHOD FOR LINK PROTECTION USING SHARED SRLG ASSOCIATION
    Publication number: 20120307644
    Abstract: In one embodiment, certain SRLGs associated with members of a bundle are deemed to be “risk-free SRLGs”, i.e., SRLGs whose failure may not substantially impact the capacity of the bundle to carry traffic in a computer network. In a bandwidth unaware embodiment a number of active members of the bundle is identified for each SRLG, and a bandwidth aware embodiment further specifies an available bandwidth capacity for each SRLG to determine risk-free SRLGs. A backup path or tunnel may be established and utilized to protect a communication link as long as the SRLGs shared are deemed to be risk-free SRLGs.
    Type: Application
    Filed: June 2, 2011
    Publication date: December 6, 2012
    Applicant: Cisco Technology, Inc.
    Inventors: Rakesh Gandhi, Eric W. Osborne, Prabhu Vaithilingam, Robert Sawaya, Junaid Israr
  • Soft Preemption For Minimizing Preemptions In A Network
    Publication number: 20120250696
    Abstract: In an embodiment, a method is disclosed for minimizing soft preemptions of LSPs. Upon receiving a reservation message for an LSP whose requested bandwidth that exceeds the available bandwidth of downstream links, a network node may select a set of LSPs for soft preemption and share the selection with other nodes along their paths, both upstream and downstream. By coordinating the selection of LSPs to soft-preempt among nodes on the path, fewer LSPs may require soft preemption, which may result in minimizing excessive network disruptions, and thus, allowing the network to function more efficiently.
    Type: Application
    Filed: March 31, 2011
    Publication date: October 4, 2012
    Inventors: Rakesh Gandhi, Robert Sawaya, Tarek Saad, Junaid Israr