Patents by Inventor Samir Vapiwala

Samir Vapiwala 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).

  • Point-to-multipoint for multicast and unicast forwarding
    Patent number: 7792111
    Abstract: A method and apparatus for establishing multicast and unicast forwarding are disclosed. In one embodiment, a method includes transmitting path messages to a plurality of receivers, receiving a plurality of messages in response to the path messages and establishing unicast and multicast forwarding based on received unicast and multicast labels. Each of the receivers is associated with a sub-LSP (Label Switched Path) in a Point-to-Multipoint (P2MP) LSP and the response messages include a multicast label and at least one unicast label corresponding to a unicast path to one of the receivers.
    Type: Grant
    Filed: April 23, 2008
    Date of Patent: September 7, 2010
    Assignee: Cisco Technology, Inc.
    Inventors: Ashok Narayanan, Robert Goguen, Ali Sajassi, Samir Vapiwala
  • Point-to -multipoint for multicast and unicast forwarding
    Publication number: 20090268731
    Abstract: A method and apparatus for establishing multicast and unicast forwarding are disclosed. In one embodiment, a method includes transmitting path messages to a plurality of receivers, receiving a plurality of messages in response to the path messages and establishing unicast and multicast forwarding based on received unicast and multicast labels. Each of the receivers is associated with a sub-LSP (Label Switched Path) in a Point-to-Multipoint (P2MP) LSP and the response messages include a multicast label and at least one unicast label corresponding to a unicast path to one of the receivers.
    Type: Application
    Filed: April 23, 2008
    Publication date: October 29, 2009
    Applicant: CISCO TECHNOLOGY, INC.
    Inventors: Ashok Narayanan, Robert Goguen, Ali Sajassi, Samir Vapiwala