Patents by Inventor Chandra Rao

Chandra Rao 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).

  • Publication number: 20200228395
    Abstract: Systems, methods, and computer-readable media for localizing faults in a network policy are disclosed. In some examples, a system or method can obtain TCAM rules across a network and use the TCAM rules to perform an equivalency check between the logical model and the hardware model of the network policy. One or more risk models are annotated with output from the equivalency check and the risk models are used to identify a set of policy objects of the network policy that are likely responsible for the faults.
    Type: Application
    Filed: March 25, 2020
    Publication date: July 16, 2020
    Inventors: Praveen Tammana, Chandra Nagarajan, Pavan Mamillapalli, Ramana Rao Kompella
  • Patent number: 10686669
    Abstract: Systems, methods, and computer-readable media for collecting node information from a fabric and generating models based on the node information. In some examples, a system can obtain, from one or more controllers in a software-defined network (SDN), a logical model of the SDN, the logical model containing objects configured for the SDN from a hierarchical management information tree (MIT) associated with the SDN and representing configurations of the objects, the hierarchical MIT defining manageable objects and object properties for the SDN, the objects corresponding to the manageable objects. The system can obtain a topological model of a fabric associated with the SDN and, based on the topological model, poll nodes in the fabric for respective configurations at the nodes. Based on the respective configurations, the system can generate a node-specific representation of the logical model, the node-specific representation projecting the logical model on each node.
    Type: Grant
    Filed: July 28, 2017
    Date of Patent: June 16, 2020
    Assignee: CISCO TECHNOLOGY, INC.
    Inventors: Chandra Nagarajan, Divjyot Sethi, Ramana Rao Kompella
  • Publication number: 20200186426
    Abstract: Systems, methods, and computer-readable media for static network policy analysis for a network. In one example, a system obtains a logical model based on configuration data stored in a controller on a software-defined network, the logical model including a declarative representation of respective configurations of objects in the software-defined network, the objects including one or more endpoint groups, bridge domains, contexts, or tenants. The system defines rules representing respective conditions of the objects according to a specification corresponding to the software-defined network, and determines whether the respective configuration of each of the objects in the logical model violates one or more of the rules associated with that object. When the respective configuration of an object in the logical model violates one or more of the rules, the system detects an error in the respective configuration associated with that object.
    Type: Application
    Filed: February 10, 2020
    Publication date: June 11, 2020
    Inventors: Kartik Mohanram, Chandra Nagarajan, Sundar Iyer, Shadab Nazar, Ramana Rao Kompella
  • Publication number: 20200177456
    Abstract: Systems, methods, and computer-readable media analyzing memory usage in a network node. A network assurance appliance may be configured to obtain reference concrete level rules for a node in the network, obtain implemented concrete level rules for the node from the node in the network, compare the reference concrete level rules with the implemented concrete level rules, and determining that the implemented concrete level rules are not appropriately configured based on the comparison.
    Type: Application
    Filed: January 28, 2020
    Publication date: June 4, 2020
    Inventors: Ramana Rao Kompella, Chandra Nagarajan, John Thomas Monk, Purna Mani Kumar Ghantasala
  • Patent number: 10652102
    Abstract: Systems, methods, and computer-readable media analyzing memory usage in a network node. A network assurance appliance may be configured to query a node in the network fabric for a number of hardware level entries, stored in memory for the node, that are associated with a concrete level network rule. The network assurance appliance may identify a logical level network intent associated with the concrete level network rule, identify a logical level component of the logical level network intent, and attribute the number of hardware level entries to the logical level component.
    Type: Grant
    Filed: July 27, 2017
    Date of Patent: May 12, 2020
    Assignee: CISCO TECHNOLOGY, INC.
    Inventors: Ramana Rao Kompella, Chandra Nagarajan, John Thomas Monk, Purna Mani Kumar Ghantasala
  • Publication number: 20200099589
    Abstract: Systems, methods, and computer-readable media for discovering a network's topology and health. In some examples, a system can obtain, from at least one of a plurality of controllers on a network, a logical model of the network, the logical model including configurations of one or more objects defined for the network. Based on the logical model, the system can identify a respective location of the plurality of controllers in the network and a plurality of nodes in a fabric of the network. Based on the respective location of the plurality of controllers and plurality of nodes, the system can poll the plurality of controllers and plurality of nodes for respective status information, and determine a health and topology of the network based on the logical model, the respective location, and respective status information.
    Type: Application
    Filed: November 27, 2019
    Publication date: March 26, 2020
    Inventors: Divjyot Sethi, Chandra Nagarajan, Ramana Rao Kompella, Gaurav Gupta, Sundar Iyer
  • Patent number: 10574513
    Abstract: Systems, methods, and computer-readable media for handling failure scenarios during data collection and analysis for assurance. In some examples, a system can obtain a logical model of a network and, based on the logical model, identify a plurality of controllers on the network and a plurality of nodes on a fabric of the network. The system can probe the plurality of controllers and plurality of nodes for respective status information, including respective reachability information, respective login diagnostics information, and/or respective software information. Based on the respective status information, the system can determine conditions at the plurality of controllers and the plurality of nodes and define one or more assurance operations based on the conditions at the plurality of controllers and the plurality of nodes. The system can then perform the one or more assurance operations.
    Type: Grant
    Filed: October 26, 2017
    Date of Patent: February 25, 2020
    Assignee: CISCO TECHNOLOGY, INC.
    Inventors: Chandra Nagarajan, Divjyot Sethi, Ramana Rao Kompella
  • Patent number: 10560328
    Abstract: Systems, methods, and computer-readable media for static network policy analysis for a network. In one example, a system obtains a logical model based on configuration data stored in a controller on a software-defined network, the logical model including a declarative representation of respective configurations of objects in the software-defined network, the objects including one or more endpoint groups, bridge domains, contexts, or tenants. The system defines rules representing respective conditions of the objects according to a specification corresponding to the software-defined network, and determines whether the respective configuration of each of the objects in the logical model violates one or more of the rules associated with that object. When the respective configuration of an object in the logical model violates one or more of the rules, the system detects an error in the respective configuration associated with that object.
    Type: Grant
    Filed: July 28, 2017
    Date of Patent: February 11, 2020
    Assignee: CISCO TECHNOLOGY, INC.
    Inventors: Kartik Mohanram, Chandra Nagarajan, Sundar Iyer, Shadab Nazar, Ramana Rao Kompella
  • Patent number: 10554483
    Abstract: Systems, methods, and computer-readable media for performing network assurance in a traditional network. In some examples, a system can collect respective sets of configurations programmed at network devices in a network and, based on the respective sets of configurations, determine a network-wide configuration of the network, the network-wide configuration including virtual local area networks (VLANs), access control lists (ACLs) associated with the VLANs, subnets, and/or a topology. Based on the network-wide configuration of the network, the system can compare the ACLs for each of the VLANs to yield a VLAN consistency check, compare respective configurations of the subnets to yield a subnet consistency check, and perform a topology consistency check based on the topology. Based on the VLAN consistency check, the subnet consistency check, and the topology consistency check, the system can determine whether the respective sets of configurations programmed at the network devices contain a configuration error.
    Type: Grant
    Filed: July 28, 2017
    Date of Patent: February 4, 2020
    Assignee: CISCO TECHNOLOGY, INC.
    Inventors: Chandra Nagarajan, Kartik Mohanram, Sundar Iyer, Ramana Rao Kompella
  • Patent number: 10554493
    Abstract: Systems, methods, and computer-readable media analyzing memory usage in a network node. A network assurance appliance may be configured to obtain reference concrete level rules for a node in the network, obtain implemented concrete level rules for the node from the node in the network, compare the reference concrete level rules with the implemented concrete level rules, and determining that the implemented concrete level rules are not appropriately configured based on the comparison.
    Type: Grant
    Filed: July 27, 2017
    Date of Patent: February 4, 2020
    Assignee: CISCO TECHNOLOGY, INC.
    Inventors: Ramana Rao Kompella, Chandra Nagarajan, John Thomas Monk, Purna Mani Kumar Ghantasala
  • Publication number: 20200017972
    Abstract: A nozzle for uniform plasma processing comprises an inlet portion and an outlet portion. The inlet portion has a side surface substantially parallel to a vertical axis. The inlet portion comprises a plurality of gas channels. The outlet portion is coupled to the inlet portion. The outlet portion comprises a plurality of outlets. At least one of the outlets is at an angle other than a right angle relative to the vertical axis.
    Type: Application
    Filed: September 26, 2019
    Publication date: January 16, 2020
    Inventors: Rohit Mishra, Siva Suri Chandra Rao Bhesetti, Eng Sheng Peh, Sriskantharajah Thirunavukarasu, Shoju Vayyapron, Cheng Sun
  • Publication number: 20200007495
    Abstract: Systems, methods, and computer-readable media relate to providing a network management service. A system is configured to request first network information from a first component of a network using a public IP address for the first component, wherein the first network information includes private IP addresses for a second component in the network and translate, based on a mapping information for a private IP address space to a public IP address space, the private IP address for a second component to a public IP address for the second component. The system is further configured to request second network information from the second component using the public IP address and provide a network management service for the network based on the second network information.
    Type: Application
    Filed: October 26, 2018
    Publication date: January 2, 2020
    Inventors: Vivek Balamurugan, Chandra Nagarajan, Divjyot Sethi, Chaitanya Velpula, Manvesh Vyas, Ramana Rao Kompella, Pradhap Muthuraman
  • Patent number: 10498608
    Abstract: Systems, methods, and computer-readable media for discovering a network's topology and health. In some examples, a system can obtain, from at least one of a plurality of controllers on a network, a logical model of the network, the logical model including configurations of one or more objects defined for the network. Based on the logical model, the system can identify a respective location of the plurality of controllers in the network and a plurality of nodes in a fabric of the network. Based on the respective location of the plurality of controllers and plurality of nodes, the system can poll the plurality of controllers and plurality of nodes for respective status information, and determine a health and topology of the network based on the logical model, the respective location, and respective status information.
    Type: Grant
    Filed: October 23, 2017
    Date of Patent: December 3, 2019
    Assignee: CISCO TECHNOLOGY, INC.
    Inventors: Divjyot Sethi, Chandra Nagarajan, Ramana Rao Kompella, Gaurav Gupta, Sundar Iyer
  • Patent number: 10465288
    Abstract: A nozzle for uniform plasma processing comprises an inlet portion and an outlet portion. The inlet portion has a side surface substantially parallel to a vertical axis. The inlet portion comprises a plurality of gas channels. The outlet portion is coupled to the inlet portion. The outlet portion comprises a plurality of outlets. At least one of the outlets is at an angle other than a right angle relative to the vertical axis.
    Type: Grant
    Filed: August 15, 2014
    Date of Patent: November 5, 2019
    Assignee: Applied Materials, Inc.
    Inventors: Rohit Mishra, Siva Suri Chandra Rao Bhesetti, Eng Sheng Peh, Sriskantharajah Thirunavukarasu, Shoju Vayyapron, Cheng Sun
  • Publication number: 20190325499
    Abstract: Visual diagram searching techniques are described herein. A visual diagram service enables users to efficiently search for data for item parts even in cases where the name of the item part is unknown. In one or more examples, search query input to locate item parts of an item is received via a user interface displayed by at least one computing device. A visual diagram of the item is displayed in the user interface. The visual diagram includes selectable portions mapped to respective item parts depicted in the corresponding selectable portion of the visual diagram. A user selection of one of the selectable portions of the visual diagram of the item is received via the user interface. In response to the user selection, search result data corresponding to the respective item part depicted in the selected selectable portion of the visual diagram of the item is displayed.
    Type: Application
    Filed: April 23, 2018
    Publication date: October 24, 2019
    Applicant: eBay Inc.
    Inventors: Shilpa Jois Rao, Seyed-Mahdi Pedramrazi, Shaumik Chandra Mondal, Subramanian Sri Sankaran, Bryan Ephraim Freeland, Rita Marion Bosch, James L. Grubbs, JR., Dong Chen
  • Patent number: 10438118
    Abstract: A device may receive, from a user device, a request to verify a machine learning (ML) application using a metamorphic testing procedure. The device may determine a type of ML process used by the ML application, and may select one or more metamorphic relations (MRs), to be used for performing the metamorphic testing procedure, based on the type of ML process. The device may receive test data to be used to test the ML application, wherein the test data is based on the one or more MRs, and may perform, by using the one or more MRs and the test data, the metamorphic testing procedure to verify one or more aspects of the ML application. The device may generate a report that indicates whether the one or more aspects of the ML application have been verified and may provide the report for display on an interface of the user device.
    Type: Grant
    Filed: September 28, 2018
    Date of Patent: October 8, 2019
    Assignee: Accenture Global Solutions Limited
    Inventors: Anurag Dwarakanath, Sanjay Podder, Neville Dubash, Kishore P Durg, Manish Ahuja, Raghotham M Rao, Samarth Sikand, Jagadeesh Chandra Bose Rantham Prabhakara
  • Patent number: 10365266
    Abstract: The disclosed invention includes methods and kits for the removal of white blood cells from samples of immunomagnetically enriched rare cells by treating the sample with a leukocyte marker conjugated to a hapten which adheres to the white blood cells and treating the resulting product with a second medium that adheres to the hapten of the white blood cells that are labeled with the leukocyte marker conjugated to hapten and removing the labeled white blood cells.
    Type: Grant
    Filed: October 11, 2017
    Date of Patent: July 30, 2019
    Assignee: Menarini Silicon Biosystems, Inc.
    Inventors: Galla Chandra Rao, Brad Foulk, Denis Smirnov, Karl Nielsen
  • Publication number: 20190222485
    Abstract: Systems, methods, and computer-readable media for emulating a state of a network environment for purposes of re-executing a network assurance appliance in the emulated state of the network environment. In some embodiments, a method can include receiving snapshot data for a network environment corresponding to a specific time in the network environment and including network events occurring in the network environment generated by a network assurance appliance. A state of the network environment at the specific time can be emulated using the snapshot data to create an emulated state of the network environment. Subsequently, the network assurance appliance can be re-executed in the emulated state of the network environment corresponding to the specific time and the network assurance appliance can be debugged outside of the network environment based on re-execution of the network assurance appliance in the emulated state of the network environment.
    Type: Application
    Filed: January 17, 2018
    Publication date: July 18, 2019
    Inventors: Divjyot Sethi, Chandra Nagarajan, Advait Dixit, John Thomas Monk, Gabriel Cheukbun Ng, Ramana Rao Kompella, Sundar Iyer
  • Publication number: 20190211244
    Abstract: Disclosed are methods for making a cured sealant. The methods include depositing an uncured sealant composition on a substrate and exposing the uncured sealant composition to actinic radiation to provide a cured sealant. The uncured sealant composition includes a thiol-terminated polythioether, a polyene comprising a polyvinyl ether and/or a polyallyl compound, and a hydroxy-functional vinyl ether. Related sealant compositions are also disclosed.
    Type: Application
    Filed: March 15, 2019
    Publication date: July 11, 2019
    Inventors: RAQUEL KELEDJIAN, RENHE LIN, CHANDRA RAO, BRUCE VIRNELSON
  • Publication number: 20190199541
    Abstract: A conference management application for a remote conferencing system stores information on a plurality of users and a plurality of client devices though which the plurality of users communicate with the remote conferencing system. The conference management application transmits information for a remote conference to a user, wherein the information that is transmitted is generated by a cognitive engine via learning mechanisms that iteratively incorporate information on previously completed remote conferences, information on the user, and information on the client device used by the user to communicate with the conference management application.
    Type: Application
    Filed: December 22, 2017
    Publication date: June 27, 2019
    Inventors: Madan K. Chukka, Purna Chandra Rao Jasti, Manish Bhide, Phani Kumar V. U. Ayyagari