Patents by Inventor Chakravarthi S. Chigurapati

Chakravarthi S. Chigurapati 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).

  • Methods and apparatus for performing in-service software upgrading for a network device using system virtualization
    Patent number: 10372437
    Abstract: A method and/or network system is able to perform an in-service software upgrade (“ISSU”) using virtualization technology while ongoing network service is maintained. After receipt of an upgrade signal such as a command of software upgrade, a new or second virtual machine (“VM”) is created in response to the upgrade signal. After downloading the new version of program to the second VM while maintaining the first version of program running on the first VM, the process for providing network management begins to migrate from the first version of program to the new version of program. The process simultaneously facilitates ISSU for a data-path module such as a line card to convert from the previous version of software to the new version of the software.
    Type: Grant
    Filed: October 31, 2017
    Date of Patent: August 6, 2019
    Assignee: Tellabs Operations Inc.
    Inventors: Chakravarthi S. Chigurapati, Pawan Uberoy, Somnath Mani, Praveen Madhav, Duncan Stuart Ritchie, Sebastian Sapa
  • Methods and Apparatus for Performing In-Service Software Upgrading For a Network Device Using System Virtualization
    Publication number: 20180052678
    Abstract: A method and/or network system is able to perform an in-service software upgrade (“ISSU”) using virtualization technology while ongoing network service is maintained. After receipt of an upgrade signal such as a command of software upgrade, a new or second virtual machine (“VM”) is created in response to the upgrade signal. After downloading the new version of program to the second VM while maintaining the first version of program running on the first VM, the process for providing network management begins to migrate from the first version of program to the new version of program. The process simultaneously facilitates ISSU for a data-path module such as a line card to convert from the previous version of software to the new version of the software.
    Type: Application
    Filed: October 31, 2017
    Publication date: February 22, 2018
    Applicant: Coriant Operations, Inc.
    Inventors: Chakravarthi S. Chigurapati, Pawan Uberoy, Somnath Mani, Praveen Madhav, Duncan Stuart Ritchie, Sebastian Sapa
  • Methods and apparatus for performing in-service software upgrade for a network device using system virtulization
    Patent number: 9830143
    Abstract: A method and/or network system is able to perform an in-service software upgrade (“ISSU”) using virtualization technology while ongoing network service is maintained. After receipt of an upgrade signal such as a command of software upgrade, a new or second virtual machine (“VM”) is created in response to the upgrade signal. After downloading the new version of program to the second VM while maintaining the first version of program running on the first VM, the process for providing network management begins to migrate from the first version of program to the new version of program. The process simultaneously facilitates ISSU for a data-path module such as a line card to convert from the previous version of software to the new version of the software.
    Type: Grant
    Filed: May 29, 2014
    Date of Patent: November 28, 2017
    Assignee: Tellabs Operations, Inc.
    Inventors: Chakravarthi S. Chigurapati, Pawan Uberoy, Somnath Mani, Praveen Madhav, Duncan Stuart Ritchie, Sebastian Sapa
  • Share access of allocated storage space via in-memory file system between virtual machines
    Patent number: 9703582
    Abstract: A method or network system able to efficiently redistribute information, data, and/or context between virtual machines (“VMs”) using an in-memory file system (“IMFS”) is disclosed. After requesting memory access by an application program, a process of VM using IMFS is able to forward the memory allocation request from a VM kernel operating under a VM environment to an emulator. The emulator, which operates between the VM kernel and the hypervisor, again redirects the memory allocation request to the hypervisor for storage allocation. The hypervisor subsequently allocates at least a portion of storage space in the IMFS in accordance with the memory allocation request.
    Type: Grant
    Filed: September 7, 2012
    Date of Patent: July 11, 2017
    Assignee: Tellabs Operations, Inc.
    Inventors: Chakravarthi S. Chigurapati, Praveen Madhav, Sebastian Sapa, Anirban Sinha, Travis Frederick Brown, Duncan Stuart Ritchie
  • Methods and Apparatus for Performing In-Service Software Upgrade for a Network Device Using System Virtulization
    Publication number: 20140304698
    Abstract: A method and/or network system is able to perform an in-service software upgrade (“ISSU”) using virtualization technology while ongoing network service is maintained. After receipt of an upgrade signal such as a command of software upgrade, a new or second virtual machine (“VM”) is created in response to the upgrade signal. After downloading the new version of program to the second VM while maintaining the first version of program running on the first VM, the process for providing network management begins to migrate from the first version of program to the new version of program. The process simultaneously facilitates ISSU for a data-path module such as a line card to convert from the previous version of software to the new version of the software.
    Type: Application
    Filed: May 29, 2014
    Publication date: October 9, 2014
    Applicant: Tellabs Operations, Inc.
    Inventors: Chakravarthi S. Chigurapati, Pawan Uberoy, Somnath Mani, Praveen Madhav, Duncan Stuart Ritchie, Sebastian Sapa
  • Methods and apparatus for performing in-service software upgrade for a network device using system virtualization
    Patent number: 8782632
    Abstract: A method and/or network system is able to perform an in-service software upgrade (“ISSU”) using virtualization technology while ongoing network service is maintained. After receipt of an upgrade signal such as a command of software upgrade, a new or second virtual machine (“VM”) is created in response to the upgrade signal. After downloading the new version of program to the second VM while maintaining the first version of program running on the first VM, the process for providing network management begins to migrate from the first version of program to the new version of program. The process simultaneously facilitates ISSU for a data-path module such as a line card to convert from the previous version of software to the new version of the software.
    Type: Grant
    Filed: June 18, 2012
    Date of Patent: July 15, 2014
    Assignee: Tellabs Operations, Inc.
    Inventors: Chakravarthi S. Chigurapati, Pawan Uberoy, Somnath Mani, Praveen Madhav, Duncan Stuart Ritchie, Sebastian Sapa