Patents by Inventor Pankaj Thakkar

Pankaj Thakkar 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).

  • Patent number: 10476744
    Abstract: A method is provided for a coordinator to manage cluster membership. In a stable state, the coordinator provides a member list to all the nodes in a node list. The member list includes nodes that are cluster members. The node list includes nodes that are or wish to be members of the cluster. When the node list differs from the member list, the coordinator advances to a reconfiguration state to change the membership of the cluster. In the reconfiguration state, the coordinator sends a reconfiguration request to all the nodes in the node list. When reconfiguration acknowledgements are received from all the nodes within a timeout period, the coordinator updates the member list to be equal to the node list, persists the updated member list, sends a reconfiguration confirmation including the updated member list to all the nodes in the node list, and returns to the stable state.
    Type: Grant
    Filed: December 15, 2017
    Date of Patent: November 12, 2019
    Assignee: NICIRA, INC.
    Inventors: Ziyou Wang, Pankaj Thakkar, Jianjun Shen, Yusheng Wang, Donghai Han
  • Publication number: 20190342158
    Abstract: Some embodiments provide a method for a network controller. The method receives network configuration data including an association of an entity configuration profile to a logical entity group that references at least two logical network entities. The entity configuration profile includes a set of configuration settings to apply to logical network entities with which the entity configuration profile is associated. The method associates the entity configuration profile with the logical network entities referenced by the logical entity group. Based on the associations of the entity configuration profile with the logical network entities, the method determines multiple host machines that require the configuration data for the entity configuration profile. The method distributes the entity configuration profile to the host machines.
    Type: Application
    Filed: May 2, 2018
    Publication date: November 7, 2019
    Inventors: Da Wan, Juntao Gao, Jianjun Shen, Donghai Han, Qiong Wang, Qi Wu, Pankaj Thakkar, Yuanhui Wang, Mengdie Song
  • Publication number: 20190342175
    Abstract: Some embodiments provide a method for a network controller. The method receives network configuration data including an association of an entity configuration profile set with a logical network entity. The entity configuration profile set is a group of at least two entity configuration profiles for different types of settings to apply to logical network entities with which the entity configuration profile set is associated. The method identifies a host machine at which the logical network entity is implemented. The method distributes the entity configuration profile set and each of the at least two entity configuration profiles to the identified host machine.
    Type: Application
    Filed: May 2, 2018
    Publication date: November 7, 2019
    Inventors: Da Wan, Juntao Gao, Jianjun Shen, Donghai Han, Qiong Wang, Qi Wu, Pankaj Thakkar, Yuanhui Wang, Mengdie Song
  • Patent number: 10447535
    Abstract: Certain embodiments described herein are generally directed to consistent processing of transport node network configuration data in a physical sharding architecture. For example, in some embodiments a first central control plane (CCP) node of a plurality of CCP nodes determines a sharding table, which is shared by the plurality of CCP nodes. In certain embodiments, the first CCP node determines a connection establishment between a first transport node and the first CCP node. In some embodiments, if the first CCP node determines, based on the sharding table, that it is a physical master of the first transport node, the first CCP node receives network configuration data from the first transport node, stores at least a portion of the network configuration data, and transmits a data update comprising at least a portion of the network configuration data to a shared data store accessible by the plurality of CCP nodes.
    Type: Grant
    Filed: February 2, 2017
    Date of Patent: October 15, 2019
    Assignee: NICIRA, INC.
    Inventors: Ziyou Wang, Jianjun Shen, Pankaj Thakkar, Hua Wang, Donghai Han
  • Publication number: 20190258507
    Abstract: Some embodiments provide a method for configuring a logical middlebox in a hosting system that includes a set of nodes. The logical middlebox is part of a logical network that includes a set of logical forwarding elements that connect a set of end machines. The method receives a set of configuration data for the logical middlebox. The method uses a stored set of tables describing physical locations of the end machines to identify a set of nodes at which to implement the logical middlebox. The method provides the logical middlebox configuration for distribution to the identified nodes.
    Type: Application
    Filed: May 3, 2019
    Publication date: August 22, 2019
    Inventors: Ronghua Zhang, Teemu Koponen, Pankaj Thakkar, Amar Padmanabhan, Martin Casado
  • Patent number: 10389634
    Abstract: Some embodiments provide a method for a network controller in a network control system that manages a plurality of logical networks. The method receives a specification of a logical network that comprises a logical router with a logical port that connects to an external network. The method selects several host machines to host a L3 gateway that implements the connection to the external network for the logical router from a set of host machines designated for hosting logical routers. The method generates data tuples for provisioning a set of managed forwarding elements that implement the logical network to send data packets that require processing by the L3 gateway to the selected host machines. The data tuples specify for the managed forwarding elements to distribute the data packets across the selected host machines.
    Type: Grant
    Filed: June 18, 2018
    Date of Patent: August 20, 2019
    Assignee: NICIRA, INC.
    Inventors: Pankaj Thakkar, Ethan J. Jackson, Benjamin C. Basler
  • Publication number: 20190253346
    Abstract: For a managed network including multiple host machines implementing multiple logical networks, some embodiments provide a method that reduces the memory and traffic load required to implement the multiple logical networks. The method generates configuration data for each of multiple host machines including (i) data to configure a host machine to implement a set of logical forwarding elements that belong to a set of routing domains and (ii) identifiers for each routing domain in the set of routing domains. The method then receives data regarding tunnels endpoints operating on each of the host machines and an association with the routing identifiers sent to the host machines. The method then generates a routing domain tunnel endpoint list for each routing domain based on the data received from each of the host machines including a list of the tunnel endpoints associated with the routing domain which the host machines can use to facilitate packet processing.
    Type: Application
    Filed: February 14, 2019
    Publication date: August 15, 2019
    Inventors: Caixia Jiang, Jianjun Shen, Pankaj Thakkar, Anupam Chanda, Ronghua Zhang, Ganesan Chandrashekhar, Vicky Liu, Da Wan, Frank Pan, Hua Wang, Donghai Han
  • Publication number: 20190238508
    Abstract: The present disclosure generally relates to applying global unified security policies across a plurality of virtual private clouds of a logical network. The logical network is deployed on a software-defined datacenter that constitute one or more private and/or public datacenters. The plurality of virtual private clouds of the logical network may have one or more overlapping internet protocol address blocks, with each virtual private cloud deploying one or more virtual machines and/or containers. A global unified security policy is disseminated to endpoints throughout the logical network using logical ports of the virtual machines and/or containers.
    Type: Application
    Filed: January 26, 2018
    Publication date: August 1, 2019
    Applicant: Nicira, Inc.
    Inventors: Mukesh HIRA, Jayant JAIN, Ganesan CHANDRASHEKHAR, Anirban SENGUPTA, Pankaj THAKKAR, Alexander TESSMER, Vivek AGARWAL
  • Publication number: 20190215238
    Abstract: Some embodiments provide a method for determining a realization status of one or more logical entities of a logical network. The method, each time a particular event occurs, increments the value of a realization number and publishes the incremented value to a set of controllers of the logical network. Upon receiving data that specifies the state of a logical entity of the logical network, the method publishes the logical entity state's data to the set of controllers. In some embodiments, the method queries the set of controllers for a realization status of the state data for a set of logical entities that is published to the set of controllers up to a particular point of time. The submitted query, in some embodiments, includes a particular value of the realization number associated with the particular point of time.
    Type: Application
    Filed: March 14, 2019
    Publication date: July 11, 2019
    Inventors: W. Andrew Lambeth, James Joseph Stabile, Ganesan Chandrashekhar, Pankaj Thakkar, Peter J. Balland, III, Igor Ganichev
  • Publication number: 20190207904
    Abstract: Some embodiments provide an ARP-offload service node for several managed hardware forwarding elements (MHFEs) in a datacenter in order to offload ARP query processing by the MHFEs. The MHFEs are managed elements because one or more network controllers (e.g., one or more management servers) send configuration data to the MHFEs to configure their operations. In some of these embodiments, the network controllers configure the MHFEs to create logical forwarding elements (e.g., logical switches, logical routers, etc.) each of which can span two or more managed forwarding elements.
    Type: Application
    Filed: March 6, 2019
    Publication date: July 4, 2019
    Inventors: Anupam Chanda, Pankaj Thakkar
  • Publication number: 20190188018
    Abstract: A method for a node to become a member of a cluster includes, when the node is in an initialization state, refraining from starting any service for the cluster, rejecting any reconfiguration request from a coordinator of the cluster, and determining if a local copy of a member list is out-of-date. When the local member list is up-to-date, the method includes advancing to an observer state or a participant state depending on if the node is in the member list. When the local copy of the member list is out-of-date, the method includes waiting to receive the member list, updating the local member list to be equal to the member list, persisting the local member list, recording the local member list as up-to-date, and advancing to an observer state or a participant state depending if the node is in the member list.
    Type: Application
    Filed: December 15, 2017
    Publication date: June 20, 2019
    Applicant: Nicira, Inc.
    Inventors: Ziyou WANG, Pankaj THAKKAR, Jianjun SHEN, Yusheng WANG, Donghai HAN
  • Publication number: 20190190783
    Abstract: A method is provided for a coordinator to manage cluster membership. In a stable state, the coordinator provides a member list to all the nodes in a node list. The member list includes nodes that are cluster members. The node list includes nodes that are or wish to be members of the cluster. When the node list differs from the member list, the coordinator advances to a reconfiguration state to change the membership of the cluster. In the reconfiguration state, the coordinator sends a reconfiguration request to all the nodes in the node list. When reconfiguration acknowledgements are received from all the nodes within a timeout period, the coordinator updates the member list to be equal to the node list, persists the updated member list, sends a reconfiguration confirmation including the updated member list to all the nodes in the node list, and returns to the stable state.
    Type: Application
    Filed: December 15, 2017
    Publication date: June 20, 2019
    Applicant: Nicira, Inc.
    Inventors: Ziyou WANG, Pankaj THAKKAR, Jianjun SHEN, Yusheng WANG, Donghai HAN
  • Publication number: 20190188193
    Abstract: Some embodiments of the invention provide a novel method for interfacing between a first tuple-based controller and a second controller using a message-based protocol. The method of some embodiments identifies a set of changed tuples stored in a set of output tables, generates a set of messages based on the changed tuples, and sends the generated set of messages to a second controller. In some embodiments, the first and second controllers are parts of a network control system that manages forwarding elements to implement a logical network.
    Type: Application
    Filed: February 8, 2019
    Publication date: June 20, 2019
    Inventors: Amre Shakimov, Su Wang, Anupam Chanda, Pankaj Thakkar
  • Patent number: 10326660
    Abstract: A network control system for managing a plurality of switching elements that implement a plurality of logical datapath sets. The network control system includes first and second controllers for generating requests for modifications to first and second logical datapath sets. The first controller is further for determining whether to make modifications to the first logical datapath set. The second controller is further for determining whether to make modifications to the second logical datapath set. Each controller is further for receiving logical control plane data that specifies logical datapath sets and for converting the logical control plane data to physical control plane data for propagating to the switching elements.
    Type: Grant
    Filed: June 3, 2016
    Date of Patent: June 18, 2019
    Assignee: NICIRA, INC.
    Inventors: Teemu Koponen, Pankaj Thakkar, Martin Casado, W. Andrew Lambeth
  • Patent number: 10320585
    Abstract: A network controller for managing several managed switching elements that forward data in a network that includes the managed switching elements. The network controller is further for creating a logical switching element to be implemented in a set of managed switching elements. The network controller includes a set of modules for receiving input data specifying a logical switching element and for creating, based on the received input data, a set of logical switch constructs for the logical switching element by performing a set of database join operations. At least one of the logical switch constructs is for facilitating non-forwarding behavior of the logical switching element.
    Type: Grant
    Filed: November 22, 2016
    Date of Patent: June 11, 2019
    Assignee: NICIRA, INC.
    Inventors: Teemu Koponen, Pankaj Thakkar, Martin Casado, W. Andrew Lambeth
  • Patent number: 10310886
    Abstract: Some embodiments provide a method for configuring a logical middlebox in a hosting system that includes a set of nodes. The logical middlebox is part of a logical network that includes a set of logical forwarding elements that connect a set of end machines. The method receives a set of configuration data for the logical middlebox. The method uses a stored set of tables describing physical locations of the end machines to identify a set of nodes at which to implement the logical middlebox. The method provides the logical middlebox configuration for distribution to the identified nodes.
    Type: Grant
    Filed: January 4, 2017
    Date of Patent: June 4, 2019
    Assignee: NICIRA, INC.
    Inventors: Ronghua Zhang, Teemu Koponen, IV, Pankaj Thakkar, Amar Padmanabhan, Martin Casado
  • Publication number: 20190149360
    Abstract: A network system that includes a first set of network hosts in a first domain and a second set of network hosts in a second domain. Within each of the domains, the system includes several edge switching elements (SEs) that each couple to the network hosts and forward network data to and from the set of network hosts. Within the first domain, the system includes (i) an interior SE that couples to a particular edge SE in order to receive network data for forwarding from the edge SE when the edge SE does not recognize a destination location of the network data and (ii) an interconnection SE that couples to the interior SE, the edge SE, and the second domain through an external network. When the edge SE receives network data with a destination address in the second domain, it forwards the network data directly to the interconnection SE.
    Type: Application
    Filed: January 15, 2019
    Publication date: May 16, 2019
    Inventors: Martin Casado, Teemu Koponen, Pankaj Thakkar
  • Publication number: 20190140931
    Abstract: Some embodiments provide a method for a first network controller that manages a set of logical forwarding elements implemented in several managed forwarding elements. The method receives a request to trace a specified packet having a particular source on a logical forwarding element. The method generates the packet according to the packet specification. The generated packet includes an indicator that the packet is for a trace operation. The method sends the packet to a second network controller that manages a managed forwarding element associated with the particular source. The method receives a first set of messages regarding operations performed on the packet from a set of network controllers that receives a second set of messages regarding operations performed on the packet from a set of managed forwarding elements that process the packet.
    Type: Application
    Filed: January 4, 2019
    Publication date: May 9, 2019
    Inventors: Igor Ganichev, Pankaj Thakkar, Teemu Koponen, Mo Dong
  • Publication number: 20190138343
    Abstract: Some embodiments provide a system for implementing a logical network that includes a set of end machines, a first logical middlebox, and a second logical middlebox connected by a set of logical forwarding elements. The system includes a set of nodes. Each of several nodes includes (i) a virtual machine for implementing an end machine of the logical network, (ii) a managed switching element for implementing the set of logical forwarding elements of the logical network, and (iii) a middlebox element for implementing the first logical middlebox of the logical network. The system includes a physical middlebox appliance for implementing the second logical middlebox.
    Type: Application
    Filed: January 2, 2019
    Publication date: May 9, 2019
    Inventors: Teemu Koponen, Ronghua Zhang, Pankaj Thakkar, Martin Casado
  • Publication number: 20190104018
    Abstract: For a network control system that receives, from a user, logical datapath sets that logically express desired forwarding behaviors that are to be implemented by a set of managed switching elements, a controller for managing several managed switching elements that forward data in a network that includes the managed switching elements is described. The controller includes a set of modules for detecting a change in one or more managed switching elements and for updating logical datapath set based on the detected change. The logical datapath set is for subsequent translation into a set of physical forwarding behaviors of the managed switching elements.
    Type: Application
    Filed: September 30, 2018
    Publication date: April 4, 2019
    Inventors: Martin Casado, Teemu Koponen, W. Andrew Lambeth, Pankaj Thakkar