Patents by Inventor Harshad Bhaskar Nakil

Harshad Bhaskar Nakil 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: 20210075726
    Abstract: Techniques are described for facilitating flow symmetry using a scalable service platform that anchors the service chain. The scalable service platform may facilitate flow symmetry and, at least in some cases, flow stickiness for a first packet flow (a “forward packet flow”) and a second, related packet flow (a “reverse packet flow”) both traversing the service chain in the forward and reverse directions, respectively. For example, a virtualized computing infrastructure may deploy a scalable service platform to perform load balancing of multiple forward packet flows, received from the gateway, among multiple parallel service instances for an ingress service in a service chain. For each corresponding reverse packet flows for the multiple forward packet flows, the scalable service platform load balances the reverse packet flow to the service instance for the egress service in the service chain that is applied to the corresponding forward packet flow.
    Type: Application
    Filed: November 23, 2020
    Publication date: March 11, 2021
    Inventors: Sreelakshmi Sarva, Harshad Bhaskar Nakil
  • Patent number: 10855588
    Abstract: Techniques are described for facilitating flow symmetry using a scalable service platform that anchors the service chain. The scalable service platform may facilitate flow symmetry and, at least in some cases, flow stickiness for a first packet flow (a “forward packet flow” and a second, related packet flow (a “reverse packet flow”) both traversing the service chain in the forward and reverse directions, respectively. For example, a virtualized computing infrastructure may deploy a scalable service platform to perform load balancing of multiple forward packet flows, received from the gateway, among multiple parallel service instances for an ingress service in a service chain. For each corresponding reverse packet flows for the multiple forward packet flows, the scalable service platform load balances the reverse packet flow to the service instance for the egress service in the service chain that is applied to the corresponding forward packet flow.
    Type: Grant
    Filed: December 21, 2018
    Date of Patent: December 1, 2020
    Assignee: Juniper Networks, Inc.
    Inventors: Sreelakshmi Sarva, Harshad Bhaskar Nakil
  • Patent number: 10757006
    Abstract: In one example, a method includes by a Software Defined Networking (SDN) controller, receiving one or more virtual routes to virtual interfaces from a first virtual router agent managed by the SDN controller, the one or more virtual routes received via a messaging protocol session between the SDN controller and the first virtual router agent; storing, by the SDN controller, the one or more virtual routes to a data structure; in response to determining the messaging protocol session has closed, marking, by the SDN controller, the one or more virtual routes in the data structure as stale without deleting the one or more virtual routes from the data structure and without withdrawing the virtual routes from routing protocol peers of the SDN controller; and subsequent to marking the one or more virtual routes as stale, sending, by the SDN controller, the one or more virtual routes to a second virtual router agent.
    Type: Grant
    Filed: February 4, 2019
    Date of Patent: August 25, 2020
    Assignee: Juniper Networks, Inc.
    Inventors: Anantharamu Suryanarayana, Harshad Bhaskar Nakil, Nischal Kumar N. Sheth
  • Publication number: 20200204492
    Abstract: Techniques are described for facilitating flow symmetry using a scalable service platform that anchors the service chain. The scalable service platform may facilitate flow symmetry and, at least in some cases, flow stickiness for a first packet flow (a “forward packet flow” and a second, related packet flow (a “reverse packet flow”) both traversing the service chain in the forward and reverse directions, respectively. For example, a virtualized computing infrastructure may deploy a scalable service platform to perform load balancing of multiple forward packet flows, received from the gateway, among multiple parallel service instances for an ingress service in a service chain. For each corresponding reverse packet flows for the multiple forward packet flows, the scalable service platform load balances the reverse packet flow to the service instance for the egress service in the service chain that is applied to the corresponding forward packet flow.
    Type: Application
    Filed: December 21, 2018
    Publication date: June 25, 2020
    Inventors: Sreelakshmi Sarva, Harshad Bhaskar Nakil
  • Patent number: 10565001
    Abstract: In general, techniques are described for configuring and managing virtual networks. For example, a distributed virtual network controller is described that configures and manages an overlay network within a physical network formed by plurality of switches. A plurality of servers are interconnected by the switch fabric, each of the servers comprising an operating environment executing one or more virtual machines in communication via the overlay networks. The servers comprises a set of virtual switches that extends the overlay network as a virtual network to the operating environment of the virtual machines.
    Type: Grant
    Filed: February 14, 2018
    Date of Patent: February 18, 2020
    Assignee: Juniper Networks, Inc.
    Inventors: Harshad Bhaskar Nakil, Ankur Singla, Pedro R. Marques
  • Patent number: 10200274
    Abstract: In one example, a method includes by a Software Defined Networking (SDN) controller, receiving one or more virtual routes to virtual interfaces from a first virtual router agent managed by the SDN controller, the one or more virtual routes received via a messaging protocol session between the SDN controller and the first virtual router agent; storing, by the SDN controller, the one or more virtual routes to a data structure; in response to determining the messaging protocol session has closed, marking, by the SDN controller, the one or more virtual routes in the data structure as stale without deleting the one or more virtual routes from the data structure and without withdrawing the virtual routes from routing protocol peers of the SDN controller; and subsequent to marking the one or more virtual routes as stale, sending, by the SDN controller, the one or more virtual routes to a second virtual router agent.
    Type: Grant
    Filed: March 31, 2017
    Date of Patent: February 5, 2019
    Assignee: Juniper Networks, Inc.
    Inventors: Anantharamu Suryanarayana, Harshad Bhaskar Nakil, Nischal Kumar N. Sheth
  • Publication number: 20180173557
    Abstract: In general, techniques are described for configuring and managing virtual networks. For example, a distributed virtual network controller is described that configures and manages an overlay network within a physical network formed by plurality of switches. A plurality of servers are interconnected by the switch fabric, each of the servers comprising an operating environment executing one or more virtual machines in communication via the overlay networks. The servers comprises a set of virtual switches that extends the overlay network as a virtual network to the operating environment of the virtual machines.
    Type: Application
    Filed: February 14, 2018
    Publication date: June 21, 2018
    Inventors: Harshad Bhaskar Nakil, Ankur Singla, Pedro R. Marques
  • Patent number: 9929911
    Abstract: In general, techniques are described in which a plurality of network switches automatically configure themselves to operate as a single virtual network switch. A virtual switch is a collection of individual switch devices that operate like as single network switch. As described herein, network switches in a network that are capable of participating in a virtual switch may automatically discover one another. The participating network switches may then elect one of the participating switches as a master switch. The master switch may generate forwarding information and store the forwarding information in the participating switches, including the master switch. The forwarding information causes the participating switches to act like a single network switch.
    Type: Grant
    Filed: October 23, 2015
    Date of Patent: March 27, 2018
    Assignee: Juniper Networks, Inc.
    Inventors: Rajashekar Reddy, Ankur Singla, Harshad Bhaskar Nakil, Pedro R. Marques, Ashish Ranjan
  • Patent number: 9898317
    Abstract: In general, techniques are described for configuring and managing virtual networks. For example, a distributed virtual network controller is described that configures and manages an overlay network within a physical network formed by plurality of switches. A plurality of servers are interconnected by the switch fabric, each of the servers comprising an operating environment executing one or more virtual machines in communication via the overlay networks. The servers comprises a set of virtual switches that extends the overlay network as a virtual network to the operating environment of the virtual machines.
    Type: Grant
    Filed: June 5, 2013
    Date of Patent: February 20, 2018
    Assignee: Juniper Networks, Inc.
    Inventors: Harshad Bhaskar Nakil, Ankur Singla
  • Patent number: 9710762
    Abstract: In general, techniques are described for dynamically modifying the extent of logging performed by logging information generators in response to events detected in logging information received by the collector. In some examples, a network device includes one or more processors and a collector executed by the processors to receive a log message that includes logging information from a generator. The network device also includes a rules engine to apply one or more rules that each specify a condition and a corresponding action to the logging information to identify a matching rule, wherein the rules engine, upon identifying a matching rule, executes the action of the matching rule to generate and send a logging modification message to increase an extent to which the generator generates logging information.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: July 18, 2017
    Assignee: Juniper Networks, Inc.
    Inventors: Harshad Bhaskar Nakil, Ankur Singla, Rajashekar Reddy
  • Patent number: 9596159
    Abstract: Techniques are described for determining latency in a physical network that includes a number of network devices over which packets travel. A virtual network controller receives a plurality of messages from a plurality of network devices in a network, each of the messages including a packet signature comprising a hash of an invariant portion of an original packet that uniquely identifies the original packet, an identifier of one of the plurality of network devices from which the respective message was received, and a timestamp indicating a time an original packet was processed by the network device from which the respective message was received. The virtual network controller determines a latency of a physical network path in the network based on analysis of contents of the identified messages having a common packet signature.
    Type: Grant
    Filed: June 30, 2015
    Date of Patent: March 14, 2017
    Assignee: Juniper Networks, Inc.
    Inventors: Tirthankar Ghose, Harshad Bhaskar Nakil, ND Ramesh
  • Patent number: 9374270
    Abstract: Techniques are described to provide multicast service within a virtual network using a virtual network controller and endpoint replication without requiring multicast support in the underlying network. The virtual network controller is configured to create a multicast tree for endpoint devices of a multicast group in the virtual network at a centralized location instead of in a distributed fashion. The virtual network controller communicates the multicast tree to one or more of the endpoint devices of the multicast group to instruct the endpoint devices to replicate and forward multicast packets to other endpoint devices according to the multicast tree. The replication and forwarding of multicast packets is performed by virtual switches executed on the endpoint devices in the virtual network. No replication is performed within the underlying network. The techniques enable multicast service within a virtual network without requiring multicast support in the underlying network.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: June 21, 2016
    Assignee: Juniper Networks, Inc.
    Inventors: Harshad Bhaskar Nakil, Pedro R. Marques, Hampapur Ajay, Ashish Ranjan, Ankur Singla
  • Patent number: 9172609
    Abstract: In general, techniques are described in which a plurality of network switches automatically configure themselves to operate as a single virtual network switch. A virtual switch is a collection of individual switch devices that operate like as single network switch. As described herein, network switches in a network that are capable of participating in a virtual switch may automatically discover one another. The participating network switches may then elect one of the participating switches as a master switch. The master switch may generate forwarding information and store the forwarding information in the participating switches, including the master switch. The forwarding information causes the participating switches to act like a single network switch.
    Type: Grant
    Filed: March 27, 2014
    Date of Patent: October 27, 2015
    Assignee: Juniper Networks, Inc.
    Inventors: Rajashekar Reddy, Ankur Singla, Harshad Bhaskar Nakil, Pedro R. Marques, Ashish Ranjan
  • Publication number: 20150304194
    Abstract: Techniques are described for determining latency in a physical network that includes a number of network devices over which packets travel. A virtual network controller receives a plurality of messages from a plurality of network devices in a network, each of the messages including a packet signature comprising a hash of an invariant portion of an original packet that uniquely identifies the original packet, an identifier of one of the plurality of network devices from which the respective message was received, and a timestamp indicating a time an original packet was processed by the network device from which the respective message was received. The virtual network controller determines a latency of a physical network path in the network based on analysis of contents of the identified messages having a common packet signature.
    Type: Application
    Filed: June 30, 2015
    Publication date: October 22, 2015
    Inventors: Tirthankar Ghose, Harshad Bhaskar Nakil, ND Ramesh
  • Publication number: 20150244617
    Abstract: In general, techniques are described for configuring and managing virtual networks. For example, a distributed virtual network controller is described that configures and manages an overlay network within a physical network formed by plurality of switches. A plurality of servers are interconnected by the switch fabric, each of the servers comprising an operating environment executing one or more virtual machines in communication via the overlay networks. The servers comprises a set of virtual switches that extends the overlay network as a virtual network to the operating environment of the virtual machines.
    Type: Application
    Filed: June 5, 2013
    Publication date: August 27, 2015
    Inventors: Harshad Bhaskar Nakil, Ankur Singla, Rajashekar Reddy, Tirthankar Ghose, ND Ramesh, Pedro Marques, Hampapur Ajay, Ashish Ranjan
  • Patent number: 9094308
    Abstract: Techniques are described for determining latency in a physical network that includes a number of network devices over which packets travel. A virtual network controller receives a plurality of messages from a plurality of network devices in a network, each of the messages including a packet signature comprising a hash of an invariant portion of an original packet that uniquely identifies the original packet, an identifier of one of the plurality of network devices from which the respective message was received, and a timestamp indicating a time an original packet was processed by the network device from which the respective message was received. The virtual network controller determines a latency of a physical network path in the network based on analysis of contents of the identified messages having a common packet signature.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: July 28, 2015
    Assignee: Juniper Networks, Inc.
    Inventors: Tirthankar Ghose, Harshad Bhaskar Nakil, N D Ramesh
  • Patent number: 9064216
    Abstract: In general, techniques are described for automatically identifying likely faulty components in massively distributed complex systems. In some examples, snapshots of component parameters are automatically repeatedly fed to a pre-trained classifier and the classifier indicates whether each received snapshot is likely to belong to a fault and failure class or to a non-fault/failure class. Components whose snapshots indicate a high likelihood of fault or failure are investigated, restarted or taken off line as a pre-emptive measure. The techniques may be applied in a massively distributed complex system such as a data center.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: June 23, 2015
    Assignee: Juniper Networks, Inc.
    Inventors: Rajeshekar Reddy, Harshad Bhaskar Nakil
  • Patent number: 8959185
    Abstract: In general, techniques are described for facilitating multi-tenancy of a server accessed by virtual networks of a data center. A device included within a data center comprising one or more processors may perform the techniques. The processors may be configured to execute a virtual switch that supports a number of virtual networks executing within the data center. The virtual switch may be configured to receive a request regarding data associated with an identifier that is unique within one of the virtual networks that originated the request. The virtual switch may then translate the identifier included within the request to generate a globally unique identifier that is unique within the plurality of virtual networks, update the request to replace the identifier included within the request with the globally unique identifier, and transmit the updated request to a server of the data center.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: February 17, 2015
    Assignee: Juniper Networks, Inc.
    Inventors: Harshad Bhaskar Nakil, Pedro R. Marques, Hampapur Ajay, Ashish Ranjan, Ankur Singla
  • Patent number: 8953441
    Abstract: In one example, a network device includes a virtual network agent, and a network interface to send network packets to the virtual network controller using a default route for a physical network prior to establishing a communication session between a virtual network controller and the virtual network agent, wherein, after establishing the communication session between the virtual network controller device and the virtual network agent, the virtual network agent receives from the virtual network controller a command to install a new route at the network device, wherein the new route specifies encapsulation information to use for encapsulating network packets for sending the network packets to the virtual network controller over an overlay network, and wherein, responsive to detecting a failed link in the physical network, the virtual network agent sends packets to the virtual network controller on an alternate route in the overlay network.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: February 10, 2015
    Assignee: Juniper Networks, Inc.
    Inventors: Harshad Bhaskar Nakil, Pedro R. Marques, Hampapur Ajay, Ashish Ranjan, Ankur Singla
  • Patent number: 8755377
    Abstract: Techniques for facilitating the operation of one or more virtual networks are described. In some examples, a system may include a first controller node device configured to control operation of a first set of elements in the one or more virtual networks, wherein the first set of elements includes a first server device. The system may also include a second controller node device configured to control operation of a second set of elements in the one or more virtual networks, wherein the second set of elements includes the second server device. The first controller node device and the second controller node device are peers according to a peering protocol by which the first controller node device and the second controller node device exchange information relating to the operation of the first set of elements and the second set of elements.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: June 17, 2014
    Assignee: Juniper Networks, Inc.
    Inventors: Harshad Bhaskar Nakil, Ankur Singla