Patents by Inventor Karthik Subramani

Karthik Subramani 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).

  • Efficient distribution of peer zone database in fibre channel fabric
    Patent number: 11381524
    Abstract: Provided are techniques for the efficient distribution of peer zone databases in a FC Fabric. In an example, a switch instantiates a peer zone definition defining a peer zone in which two or more initiator host devices are each permitted to communicate with one or more target storage devices via the switched FC fabric and the two or more initiator host devices are prevented from communicating with each other. The switch stores the peer zone definition in a peer zone database at the FC switch, and distributes the peer zone definition to other FC switches of the switched FC fabric without performing a Fabric lock operation.
    Type: Grant
    Filed: July 17, 2020
    Date of Patent: July 5, 2022
    Assignee: CISCO TECHNOLOGY, INC.
    Inventors: Karthik Subramani, Venu Gopal Tummala, Kishan Kumar Kotari Uppunda
  • EFFICIENT DISTRIBUTION OF PEER ZONE DATABASE IN FIBRE CHANNEL FABRIC
    Publication number: 20200351221
    Abstract: Provided are techniques for the efficient distribution of peer zone databases in a FC Fabric. In an example, a switch instantiates a peer zone definition defining a peer zone in which two or more initiator host devices are each permitted to communicate with one or more target storage devices via the switched FC fabric and the two or more initiator host devices are prevented from communicating with each other. The switch stores the peer zone definition in a peer zone database at the FC switch, and distributes the peer zone definition to other FC switches of the switched FC fabric without performing a Fabric lock operation.
    Type: Application
    Filed: July 17, 2020
    Publication date: November 5, 2020
    Inventors: Karthik Subramani, Venu Gopal Tummala, Kishan Kumar Kotari Uppunda
  • Efficient distribution of peer zone database in Fibre Channel fabric
    Patent number: 10757040
    Abstract: Provided are techniques for the efficient distribution of peer zone databases in a FC Fabric. In an example, a switch instantiates a peer zone definition defining a peer zone in which two or more initiator host devices are each permitted to communicate with one or more target storage devices via the switched FC fabric and the two or more initiator host devices are prevented from communicating with each other. The switch stores the peer zone definition in a peer zone database at the FC switch, and distributes the peer zone definition to other FC switches of the switched FC fabric without performing a Fabric lock operation.
    Type: Grant
    Filed: July 11, 2017
    Date of Patent: August 25, 2020
    Assignee: CISCO TECHNOLOGY, INC.
    Inventors: Karthik Subramani, Venu Gopal Tummala, Kishan Kumar Kotari Uppunda
  • Fibre channel fabric slow drain mitigation
    Patent number: 10594599
    Abstract: Presented herein are priority route based techniques for mitigation of slow drain devices in a Fibre Channel (FC) fabric comprising a plurality of FC switches. In accordance with examples presented herein, a first FC switch in a FC fabric receives an indication that a first computing device attached to the FC fabric has entered a slow drain condition. The first FC switch is configured to prepare and install a priority route for packet flows directed to the first computing device.
    Type: Grant
    Filed: August 26, 2016
    Date of Patent: March 17, 2020
    Assignee: Cisco Technology, Inc.
    Inventors: Kishan Kumar Kotari Uppunda, Karthik Subramani, Venu Gopal Tummala, Jayaprakash Nallapalingu, Sumanth Sindiri, Malipedy Vijaya Kumar
  • EFFICIENT DISTRIBUTION OF PEER ZONE DATABASE IN FIBRE CHANNEL FABRIC
    Publication number: 20190020603
    Abstract: Provided are techniques for the efficient distribution of peer zone databases in a FC Fabric. In an example, a switch instantiates a peer zone definition defining a peer zone in which two or more initiator host devices are each permitted to communicate with one or more target storage devices via the switched FC fabric and the two or more initiator host devices are prevented from communicating with each other. The switch stores the peer zone definition in a peer zone database at the FC switch, and distributes the peer zone definition to other FC switches of the switched FC fabric without performing a Fabric lock operation.
    Type: Application
    Filed: July 11, 2017
    Publication date: January 17, 2019
    Inventors: Karthik Subramani, Venu Gopal Tummala, Kishan Kumar Kotari Uppunda
  • FIBRE CHANNEL FABRIC SLOW DRAIN MITIGATION
    Publication number: 20180063004
    Abstract: Presented herein are priority route based techniques for mitigation of slow drain devices in a Fibre Channel (FC) fabric comprising a plurality of FC switches. In accordance with examples presented herein, a first FC switch in a FC fabric receives an indication that a first computing device attached to the FC fabric has entered a slow drain condition. The first FC switch is configured to prepare and install a priority route for packet flows directed to the first computing device.
    Type: Application
    Filed: August 26, 2016
    Publication date: March 1, 2018
    Inventors: Kishan Kumar Kotari Uppunda, Karthik Subramani, Venu Gopal Tummala, Jayaprakash Nallapalingu, Sumanth Sindiri, Malipedy Vijaya Kumar