Patents by Inventor Keith E. Holleman

Keith E. Holleman 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).

  • Time adjustment using time-to-live values
    Patent number: 8954609
    Abstract: In one example, network device includes a control unit having one or more hardware-based microprocessors and an interface. The interface can receive a first time synchronization message from a master device that comprises a first TTL value. The first TTL value can be indicative of a number of hops traversed by the first time synchronization message. The interface can subsequently receive a second time synchronization message from the master device that comprises a second TTL value that is is indicative of a number of hops traversed by the second time synchronization message. The network device can also include a timing module that determines a time adjustment based at least in part on the determination that the first and second TTL values are different, and applies the time adjustment to update the time of the network device.
    Type: Grant
    Filed: April 25, 2012
    Date of Patent: February 10, 2015
    Assignee: Juniper Networks, Inc.
    Inventors: Keith E. Holleman, Murthy Garikiparthi, Meenakshi Sundaram Subramanian, DeviPrasad Natesan, Philip Kruzinski
  • Protecting connection traffic using filters
    Patent number: 8619550
    Abstract: A connection between network nodes in a communication network is backed up. A failover switched path such as a label-switched path (LSP) is created starting at a first network node of a connection and ending at the second node of the connection, while bypassing the protected connection. In the event of connection failure, data is transmitted through the failover switched path (e.g., LSP). A network operator can selectively protect different types of data by using filters that bind one or more types of traffic received over one or more interfaces to different failover switched paths (LSPs).
    Type: Grant
    Filed: September 30, 2011
    Date of Patent: December 31, 2013
    Assignee: Juniper Networks, Inc.
    Inventors: Ping Pan, Der-Hwa Gan, Keith E. Holleman, Manoj Leelanivas, Nischal Sheth, Arun Vaidyanathan
  • PROTECTING CONNECTION TRAFFIC USING FILTERS
    Publication number: 20120020205
    Abstract: A connection between network nodes in a communication network is backed up. A failover switched path such as a label-switched path (LSP) is created starting at a first network node of a connection and ending at the second node of the connection, while bypassing the protected connection. In the event of connection failure, data is transmitted through the failover switched path (e.g., LSP). A network operator can selectively protect different types of data by using filters that bind one or more types of traffic received over one or more interfaces to different failover switched paths (LSPs).
    Type: Application
    Filed: September 30, 2011
    Publication date: January 26, 2012
    Inventors: Ping PAN, Der-Hwa Gan, Keith E. Holleman, Manoj Leelanivas, Nischal Sheth, Arun Vaidyanathan
  • Protecting connection traffic using filters
    Patent number: 8055791
    Abstract: A connection between network nodes in a communication network is backed up. A failover label-switched path (LSP) is created starting at a first network node of a connection and ending 5 at the second node of the connection, while bypassing the protected connection. In the event of connection failure, data is transmitted through the failover LSP. A network operator can selectively protect different types of data by using filters that bind one or more types of traffic received over one or more interfaces to different failover LSPs.
    Type: Grant
    Filed: February 15, 2010
    Date of Patent: November 8, 2011
    Assignee: Juniper Networks, Inc.
    Inventors: Ping Pan, Der-Hwa Gan, Keith E. Holleman, Manoj Leelanivas, Nischal Sheth, Arun Vaidyanathan
  • PROTECTING CONNECTION TRAFFIC USING FILTERS
    Publication number: 20100142370
    Abstract: A connection between network nodes in a communication network is backed up. A failover label-switched path (LSP) is created starting at a first network node of a connection and ending 5 at the second node of the connection, while bypassing the protected connection. In the event of connection failure, data is transmitted through the failover LSP. A network operator can selectively protect different types of data by using filters that bind one or more types of traffic received over one or more interfaces to different failover LSPs.
    Type: Application
    Filed: February 15, 2010
    Publication date: June 10, 2010
    Inventors: Ping PAN, Der-Hwa Gan, Keith E. Holleman, Manoj Leelanivas, Nischal Sheth, Arun Vaidyanathan
  • Protecting connection traffic using filters
    Patent number: 7680952
    Abstract: A connection between network nodes in a communication network is backed up. A failover label-switched path (LSP) is created starting at a first network node of a connection and ending at the second node of the connection, while bypassing the protected connection. In the event of connection failure, data is transmitted through the failover LSP. A network operator can selectively protect different types of data by using filters that bind one or more types of traffic received over one or more interfaces to different failover LSPs.
    Type: Grant
    Filed: June 16, 2004
    Date of Patent: March 16, 2010
    Assignee: Juniper Networks, Inc.
    Inventors: Ping Pan, Der-Hwa Gan, Keith E. Holleman, Manoj Leelanivas, Nischal Sheth, Arun Vaidyanathan