Patents by Inventor Vasant Sahay

Vasant Sahay 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).

  • Patent number: 10764264
    Abstract: A technique for authenticating network users is disclosed. In one particular exemplary embodiment, the technique may be realized as a method for authenticating network users. The method may comprise receiving, from a client device, a request for connection to a network. The method may also comprise evaluating a security context associated with the requested connection. The method may further comprise assigning the client device one or more access privileges based at least in part on the evaluation of the security context.
    Type: Grant
    Filed: December 30, 2005
    Date of Patent: September 1, 2020
    Assignee: Avaya Inc.
    Inventors: Ravi Chakravarthi Kumar, Tal I. Lavian, Vasant Sahay, Nirmalendu Das, Biju Sajibhavan Kunjukunju, David Burton Levi, Philippe Michelet, Shmuel Nehama
  • Patent number: 9021130
    Abstract: Embodiments of the present invention present a method and apparatus for photonic line sharing for high-speed routers. Photonic switches receive high-speed optical data streams and produce the data streams to a router operating according to routing logic and produce optical data streams according to destination addresses stored in the data packets. Each photonic switch can be configured as one of a 1:N multiplexer or an M:N cross-connect switch. In one embodiment, optical data is converted to electrical data prior to routing, while an alternate embodiment routes only optical data. Another embodiment transfers large volumes of high-speed data through an optical bypass line in a circuit switched network to bypass the switch fabric thereby routing the data packets directly to the destination. An edge device selects one of the packet switched network or the circuit switched network. The bypass resources are released when the large volume of high-speed data is transferred.
    Type: Grant
    Filed: December 31, 2003
    Date of Patent: April 28, 2015
    Assignee: RPX Clearinghouse LLC
    Inventors: Vasant Sahay, Tal Lavian, Bruce Schofield
  • Patent number: 8971706
    Abstract: Automatic discovery and verification of optical communication links as well as isolation of link failures in an optical communication system.
    Type: Grant
    Filed: September 30, 2002
    Date of Patent: March 3, 2015
    Assignee: Rockstar Consortium US LP
    Inventors: Ornan A. Gerstel, Humair Raza, Rajiv Ramaswami, Babu O. Narayanan, Robert Ward, Robert Keys, David Park, Vasant Sahay, Osama Aboul-Magd, Frederic Simard
  • Patent number: 8707395
    Abstract: A technique for providing secure network access is disclosed. In one particular exemplary embodiment, the technique may be realized as a method for providing secure network access. The method may comprise establishing a plurality of access zones in a network, wherein client devices assigned to different access zones have different access privileges and are isolated from one another. The method may also comprise assigning a client device to one of the plurality of access zones based on an assessment of a security context associated with the client device and a connection of the client device to the network.
    Type: Grant
    Filed: December 30, 2005
    Date of Patent: April 22, 2014
    Assignee: Avaya Inc.
    Inventors: Vasant Sahay, Biju Sajibhavan, Nirmalendu Das, Subhasree Mandal, David Burton Levi, Manoj Kumar Guglani, Philippe Michelet, Ravi Chakravarthi Kumar
  • Patent number: 7411916
    Abstract: A method and an apparatus that reduce the burden on routers by removing the aggregation and physical Wide Area Network (WAN) interface functions from the router are provided. The aggregation and physical Wide Area Network interface transparently forwards traffic and routing information to and from the WAN without becoming a router. The disclosed forwarding technique and apparatus is applicable to IP protocol as well as other protocols. As provided, the routing device is connected to a forwarding device via the Local Area Network (LAN) and the IP Multiplexer forwards data packets to one or more physical WAN links.
    Type: Grant
    Filed: June 14, 2002
    Date of Patent: August 12, 2008
    Assignee: Nortel Networks Limited
    Inventors: Joshua Sakov, Mohan Dattatreya, Vasant Sahay
  • Publication number: 20070169171
    Abstract: A technique for authenticating network users is disclosed. In one particular exemplary embodiment, the technique may be realized as a method for authenticating network users. The method may comprise receiving, from a client device, a request for connection to a network. The method may also comprise evaluating a security context associated with the requested connection. The method may further comprise assigning the client device one or more access privileges based at least in part on the evaluation of the security context.
    Type: Application
    Filed: December 30, 2005
    Publication date: July 19, 2007
    Inventors: Ravi Kumar, Tal Lavian, Vasant Sahay, Nirmalendu Das, Biju Kunjukunju, David Levi, Philippe Michelet
  • Publication number: 20070011725
    Abstract: A technique for providing secure network access is disclosed. In one particular exemplary embodiment, the technique may be realized as a method for providing secure network access. The method may comprise establishing a plurality of access zones in a network, wherein client devices assigned to different access zones have different access privileges and are isolated from one another. The method may also comprise assigning a client device to one of the plurality of access zones based on an assessment of a security context associated with the client device and a connection of the client device to the network.
    Type: Application
    Filed: December 30, 2005
    Publication date: January 11, 2007
    Inventors: Vasant Sahay, Biju Kunjukunju, Nirmalendu Das, Subhasree Mandal, David Levi, Manoj Guglani, Philippe Michelet, Ravi Kumar
  • Publication number: 20040008988
    Abstract: Automatic discovery and verification of optical communication links as well as isolation of link failures in an optical communication system.
    Type: Application
    Filed: September 30, 2002
    Publication date: January 15, 2004
    Inventors: Ornan A. Gerstal, Humair Raza, Rajiv Ramaswami, Babu O. Narayanan, Robert Ward, Robert Keys, David Park, Vasant Sahay, Osama Aboul-Magd, Frederic Simard
  • Publication number: 20020196802
    Abstract: A method and an apparatus that reduce the burden on routers by removing the aggregation and physical Wide Area Network (WAN) interface functions from the router are provided. The aggregation and physical Wide Area Network interface transparently forwards traffic and routing information to and from the WAN without becoming a router. The disclosed forwarding technique and apparatus is applicable to IP protocol as well as other protocols. As provided, the routing device is connected to a forwarding device via the Local Area Network (LAN) and the IP Multiplexer forwards data packets to one or more physical WAN links.
    Type: Application
    Filed: June 14, 2002
    Publication date: December 26, 2002
    Inventors: Joshua Sakov, Mohan Dattatreva, Vasant Sahay