Patents Assigned to Nicira, Inc.
  • Patent number: 11418445
    Abstract: Some embodiments provide a method for a network controller operating on a host machine that hosts a particular one of multiple centralized routing components for a logical router. The method receives a routing table from a routing protocol application operating on the host machine. Each of the other centralized routing components operates on a different host machine and implements a different interface of the logical router that connects to at least one physical router external to the logical network. The routing protocol application operates as a router server for all of the centralized routing components. For each of the other centralized routing components, the method identifies a set of routes in the routing table to distribute to the centralized routing component. The method sends the identified routes for each centralized routing component to the centralized routing component.
    Type: Grant
    Filed: August 2, 2020
    Date of Patent: August 16, 2022
    Assignee: NICIRA, INC.
    Inventor: Ankur Dubey
  • Patent number: 11411995
    Abstract: Techniques are disclosed for securing traffic flowing across multi-tenant virtualized infrastructures using group key-based encryption. In one embodiment, an encryption module of a virtual machine (VM) host intercepts layer 2 (L2) frames sent via a virtual NIC (vNIC). The encryption module determines whether the vNIC is connected to a “secure wire,” and invokes an API exposed by a key management module to encrypt the frames using a group key associated with the secure wire, if any. Encryption may be performed for all frames from the vNIC, or according to a policy. In one embodiment, the encryption module may be located at a layer farthest from the vNIC, and encryption may be transparent to both the VM and a virtual switch. Unauthorized network entities which lack the group key cannot decipher the data of encrypted frames, even if they gain access to such frames.
    Type: Grant
    Filed: August 2, 2020
    Date of Patent: August 9, 2022
    Assignee: NICIRA, INC.
    Inventors: Amit Chopra, Uday Masurekar
  • Patent number: 11405335
    Abstract: Described herein are systems, methods, and software to enhance network traffic management. In one implementation, a first host identifies a packet to be transferred from a first virtual machine on the first host to a second virtual machine on a second host. In response to identifying the packet, the first host identifies a source logical port for the first virtual machine, and transferring a communication to the second host, wherein the communication encapsulates the data packet and the source logical port. Once the packet is received by the second host, the second host may use the source logical port to determine a forwarding action for the packet.
    Type: Grant
    Filed: January 13, 2017
    Date of Patent: August 2, 2022
    Assignee: Nicira, Inc.
    Inventors: Jayant Jain, Ganesan Chandrashekhar, Anirban Sengupta, Pankaj Thakkar, Alexander Tessmer
  • Patent number: 11405352
    Abstract: The technology disclosed herein enables remote gateways to quickly re-learn MAC addresses of workloads for a gateway that has taken over for another gateway. In a particular embodiment, a method provides determining that a backup gateway should begin handling communications exchanged with one or more workloads of an active gateway for a logical network. The method further provides transferring a control message to one or more remote gateways in communication with the backup gateway. The control message instructs the remote gateways to change MAC addresses learned from, and associated with, the active gateway to being associated with the backup gateway. The method also provides, in the backup gateway, receiving network communications directed to one or more of the workloads from one or more of the remote gateways.
    Type: Grant
    Filed: April 14, 2020
    Date of Patent: August 2, 2022
    Assignee: Nicira, Inc.
    Inventors: Sami Boutros, Jerome Catrouillet, Ankur Kumar Sharma
  • Patent number: 11405431
    Abstract: Some embodiments provide a novel content switching method that distributes requests for different types of content to different sets of content servers. In some embodiments, the method deploys a content switch in the ingress data path of a first content server that is part of a first set of servers that processes requests for a first type of content. This content switch receives each content request that is directed to the first content server, and determines whether the received request is for the first content type that is processed by the first content server. If so, the content switch directs the request to the first content server. On the other hand, if the request is for a second type of content that is processed by a second set of servers, the content switch identifies a second content server in the second set and forwards the request to the second content server.
    Type: Grant
    Filed: March 11, 2020
    Date of Patent: August 2, 2022
    Assignee: NICIRA, INC.
    Inventors: Xinhua Hong, Jayant Jain, Anirban Sengupta
  • Patent number: 11397609
    Abstract: Methods and apparatus for application and/or context-based management of virtual networks using customizable workflows are disclosed. An example apparatus includes a context engine to monitor data traffic from a virtual machine in a data plane of a virtual network to capture context information to identify an application executing on the virtual machine; and a policy manager to receive the context information to instantiate an application entity corresponding to the application in a policy plane of the virtual network and to generate a policy associated with the application entity in the policy plane of the virtual network, the policy and the application entity enabling monitoring and management of the application via the policy plane.
    Type: Grant
    Filed: June 29, 2020
    Date of Patent: July 26, 2022
    Assignee: Nicira, Inc.
    Inventors: Rajiv Krishnamurthy, Laxmikant Gunda
  • Patent number: 11394692
    Abstract: A novel method of providing virtual private access to a software defined data center (SDDC) is provided. The SDDC uses distributed VPN tunneling to allow external access to application services hosted in the SDDC. The SDDC includes host machines for providing computing and networking resources and a VPN gateway for providing external access to those resources. The host machines that host the VMs running the applications that VPN clients are interested in connecting performs the VPN encryption and decryption. The VPN gateway does not perform any encryption and decryption operations. The packet structure is such that the VPN gateway can read the IP address of the VM without decrypting the packet.
    Type: Grant
    Filed: February 9, 2020
    Date of Patent: July 19, 2022
    Assignee: NICIRA, INC.
    Inventors: Sandesh Sawant, Amit Chopra, Vinayak Shashikant Naik, Jayant Jain, Anirban Sengupta, Uday Masurekar
  • Patent number: 11388139
    Abstract: For a host that executes one or more guest virtual machines (GVMs), some embodiments provide a novel virtualization architecture for utilizing a firewall service virtual machine (SVM) on the host to check the packets sent by and/or received for the GVMs. In some embodiments, the GVMs connect to a software forwarding element (e.g., a software switch) that executes on the host to connect to each other and to other devices operating outside of the host. Instead of connecting the firewall SVM to the host's software forwarding element that connects its GVMs, the virtualization architecture of some embodiments provides an SVM interface (SVMI) through which the firewall SVM can be accessed to check the packets sent by and/or received for the GVMs.
    Type: Grant
    Filed: July 31, 2020
    Date of Patent: July 12, 2022
    Assignee: NICIRA, INC.
    Inventors: Chidambareswaran Raman, Subrahmanyam Manuguri, Todd Sabin
  • Patent number: 11372671
    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: Grant
    Filed: January 4, 2021
    Date of Patent: June 28, 2022
    Assignee: NICIRA, INC.
    Inventors: Teemu Koponen, Ronghua Zhang, Pankaj Thakkar, Martin Casado
  • Patent number: 11374899
    Abstract: Described herein are systems, methods, and software to enhance connectivity between cloud computing service endpoints and virtual machines. In one implementation, a method of managing data packet addressing in a first namespace includes receiving a data packet at a first interface for the first namespace, wherein the first interface is paired with a second interface of a second namespace. The method also includes identifying if the packet is destined for a service node in an underlay network outside of an overlay network for the second namespace, and if destined for a service node outside of an overlay network for the second namespace, modifying addressing in the data packet to support the underlay network and transferring the data packet over a virtual network interface for the virtual machine.
    Type: Grant
    Filed: October 13, 2020
    Date of Patent: June 28, 2022
    Assignee: Nicira, Inc.
    Inventors: Mukesh Hira, Sandeep Siroya
  • Patent number: 11374904
    Abstract: In one aspect, a computerized system useful for implementing a cloud-based multipath routing protocol to an Internet endpoint includes an edge device that provides an entry point into an entity's core network. The entity's core network includes a set of resources to be reliably accessed. The computerized system includes a cloud-edge device instantiated in a public-cloud computing platform. The cloud-edge device joins a same virtual routing and forwarding table as the edge device. The cloud-edge device receives a set of sources and destinations of network traffic that are permitted to access the edge device and the set of resources.
    Type: Grant
    Filed: September 19, 2019
    Date of Patent: June 28, 2022
    Assignee: NICIRA, INC.
    Inventors: Ajit Ramachandra Mayya, Parag Pritam Thakore, Stephen Craig Connors, Alex Kompel, Thomas Harold Speeter
  • Patent number: 11368431
    Abstract: Some embodiments provide a method for applying a security policy defined for a logical network to an MHFE that integrates physical workloads (e.g., physical machines connected to the MHFE) with the logical network. The method applies the security policy to the MHFE by generating a set of ACL rules based on the security policy's definition and configuring the MHFE to apply the ACL rules on the network traffic that is forwarded to and/or from the physical machines. In order to configure an MHFE to implement the different LFEs of a logical network, some embodiments propagate an open source database stored on the MHFE, using an open source protocol. Some embodiments propagate a particular table of the database such that each record of the table creates an association between a port of an LFE stored in a logical forwarding table and one or more ACL rules stored in an ACL table.
    Type: Grant
    Filed: May 18, 2020
    Date of Patent: June 21, 2022
    Assignee: NICIRA, INC.
    Inventor: Benjamin Basler
  • Patent number: 11349724
    Abstract: An approach for a software defined networking manager to perform a predictive analysis of proposed modifications to a software defined network (SDN) is presented. A method comprises receiving entity logical associations that are captured in a set of rules implemented in a SDN. Once a proposed modification to the entity logical associations is received, without implementing the proposed modification and without modifying the set of rules, impacted entity associations, from the entity logical associations, are identified. Upon receiving input indicating that the proposed modification is to be accepted, an updated set of rules for the SDN is generated by updating the set of rules based on the proposed modification, and the updated set of rules is implemented in the SDN.
    Type: Grant
    Filed: February 28, 2018
    Date of Patent: May 31, 2022
    Assignee: NICIRA, INC.
    Inventors: Ujwala Kawalay, Prashant Ambardekar, Prayas Gaurav, Rajiv Krishnamurthy, Gurprit Johal
  • Patent number: 11347537
    Abstract: Some embodiments provide a local network controller that manages a first managed forwarding element (MFE) operating to forward traffic on a host machine for several logical networks and configures the first MFE to forward traffic for a set of containers operating within a container virtual machine (VM) that connects to the first MFE. The local network controller receives, from a centralized network controller, logical network configuration information for a logical network to which the set of containers logically connect. The local network controller receives, from the container VM, a mapping of a tag value used by a second MFE operating on the container VM to a logical forwarding element of the logical network to which the set of containers connect. The local network controller configures the first MFE to apply the logical network configuration information to data messages received from the container VM that are tagged with the tag value.
    Type: Grant
    Filed: May 18, 2020
    Date of Patent: May 31, 2022
    Assignee: NICIRA, INC.
    Inventors: Somik Behera, Donghai Han, Jianjun Shen, Justin Pettit
  • Patent number: 11349722
    Abstract: In one aspect, a computerized method useful for connecting to a multipath hub in a cluster includes the step of, with a gateway in a same network as the cluster, receiving, from a branch edge, a request to connect to a logical identifier (ID) of the multipath hub. The gateway recognizes a logical ID representing a cluster. The gateway determines a least-loaded edge in the cluster to be the multipath hub. The gateway returns a connectivity information for the multipath hub. The branch edge configures a tunnel to the multipath hub.
    Type: Grant
    Filed: August 1, 2020
    Date of Patent: May 31, 2022
    Assignee: NICIRA, INC.
    Inventors: Ajit Ramachandra Mayya, Parag Pritam Thakore, Stephen Craig Connors, Steven Michael Woo, Sunil Mukundan, Nitin Kumar Ananda
  • Patent number: 11343183
    Abstract: Example methods are provided to perform traffic forwarding between geographically dispersed first site and second site and to support traffic forwarding via a trunk interface. In one example, the method may include receiving, by a first edge device at the first site, network traffic having a plurality of packets via a trunk interface of the first edge device from a virtual tunnel endpoint, the virtual tunnel endpoint having decapsulated the packets prior to communicating the packets through the trunk interface. The method may further include reading an overlay network identifier from each of the packets to identify a source overlay network of the received network traffic from the multiple overlay networks; modifying each of the packets to include a virtual local area network (VLAN) identifier; and forwarding modified network traffic to a second edge device at the second site to identify the destination network based on the VLAN identifier.
    Type: Grant
    Filed: August 30, 2019
    Date of Patent: May 24, 2022
    Assignee: NICIRA INC.
    Inventors: Qin Li, Shailesh Urhekar, Amit Chopra, Ayyappan Veeraiyan, Uday Masurekar
  • Patent number: 11343204
    Abstract: A novel design of a gateway that handles traffic in and out of a network by using a datapath pipeline is provided. The datapath pipeline includes multiple stages for performing various data-plane packet-processing operations at the edge of the network. The processing stages include centralized routing stages and distributed routing stages. The processing stages can include service-providing stages such as NAT and firewall. The gateway caches the result previous packet operations and reapplies the result to subsequent packets that meet certain criteria. For packets that do not have applicable or valid result from previous packet processing operations, the gateway datapath daemon executes the pipelined packet processing stages and records a set of data from each stage of the pipeline and synthesizes those data into a cache entry for subsequent packets.
    Type: Grant
    Filed: May 27, 2020
    Date of Patent: May 24, 2022
    Assignee: NICIRA, INC.
    Inventors: Ronghua Zhang, Yong Wang, Teemu Koponen, Xinhua Hong
  • Patent number: 11336572
    Abstract: The technology disclosed herein enables a dynamic chain of virtual service functions for processing network traffic in a virtual computing environment. In a particular embodiment, a method includes providing a service chain policy to a virtual routing element connecting the respective service functions and determining an initial classification of a network packet entering the dynamic service chain. The initial classification indicates at least a first service function in a sequence of the service functions for processing the network packet. The method further includes providing a service chain policy to a virtual routing element connecting the respective service functions.
    Type: Grant
    Filed: May 12, 2017
    Date of Patent: May 17, 2022
    Assignee: Nicira, Inc.
    Inventors: Sami Boutros, Mani Kancherla, Dharmaraja Rajan, Philip Kippen, Yashika Narang, Chidambareswaran Raman
  • Patent number: 11336590
    Abstract: Some embodiments provide a method that receives a request for information regarding a path between endpoints of a logical network. The method provides, for display, a visualization of the path including (i) a set of logical network components between the endpoints and (ii) a set of physical network components that implement the logical network components. The physical network components and the logical network components are aligned in the display. In some embodiments, the method receives data regarding a packet tracing operation between the endpoints. The method generates a display including (i) a visualization of the path between the endpoints of the logical network and (ii) a representation of the received data regarding the packet tracing operation, with the packet tracing operation data is visually linked to the components of the path.
    Type: Grant
    Filed: October 12, 2020
    Date of Patent: May 17, 2022
    Assignee: NICIRA, INC.
    Inventors: Alexander Nhu, Brighton Vino Jegarajan, Jian Shen Sik, Venkata Ranganath Babu Golla, Shivraj Shahajirao Sonawane
  • Patent number: 11336733
    Abstract: Described herein are systems, methods, and software to enhance packet . In one implementation, a host computing element identifies a packet from a process executing on the host computing element. In response to identifying the packet, the host computing element determines whether the packet originates from a container namespace corresponding to a container on the host computing element or a host namespace corresponding to the host computing element. If the packet originates from a container namespace, the host computing element may determine supplemental information for the container associated with the container namespace, and process the packet based on the supplemental information.
    Type: Grant
    Filed: September 10, 2018
    Date of Patent: May 17, 2022
    Assignee: Nicira, Inc.
    Inventors: Nilesh Awate, Vivek Parikh, Amit Vasant Patil, Vaibhav Rekhate