Patents by Inventor Nithin Bangalore RAJU

Nithin Bangalore RAJU 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: 12348492
    Abstract: Techniques for utilizing a network gateway provisioned in a software-defined network to verify service readiness of one or more security service(s) of a service chain prior to redirecting network traffic along a given data-path to the security service(s). The gateway may be configured to open a specific port on a network device hosting a security service to transmit network policies and/or test network traffic to the security service. The network gateway may host a virtual source and/or a virtual destination and cause the virtual source to send test network traffic through the security service via the port and to the virtual destination. The gateway may then utilize the received test network traffic to determine whether a given security service satisfies a threshold health and/or functionality measurement. Once it is determined that the security service satisfies the thresholds, the gateway may cause network traffic to be redirected to the security service.
    Type: Grant
    Filed: March 30, 2023
    Date of Patent: July 1, 2025
    Assignee: Cisco Technology, Inc.
    Inventors: Pritam Baruah, Balaji Sundararajan, Nithin Bangalore Raju, Srilatha Tangirala, Ramakumara Kariyappa
  • Patent number: 12335062
    Abstract: Techniques for virtualizing tenant transport interfaces configured to implement pertenant network routing attribute differentiation in each tenant overlay of a multisite wide area network (WAN) and share the virtual transport interfaces between multi-tenant edge (MTE) devices providing transport services to tenant devices based on a defined tenant tier model. A Software-Defined Networking (SDN) controller may receive a physical transport interface and/or a device type associated with a tenant device. The SDN controller may determine a virtual transport interface for the tenant device based on a tier associated with the tenant. MTE device(s) may utilize the physical transport interface to establish sessions with other MTE device(s) in the WAN. The virtual transport interface may be utilized by MTE devices to implement and/or enforce network routing attributes when forwarding network traffic associated with the tenant via the sessions established between the MTE devices through the WAN.
    Type: Grant
    Filed: March 18, 2024
    Date of Patent: June 17, 2025
    Assignee: Cisco Technology, Inc.
    Inventors: Balaji Sundararajan, Ajeet Pal Singh Gill, Srilatha Tangirala, Nithin Bangalore Raju, Ravi Kiran Chintallapudi, Pradeepan Kannawadi, Ganesh Devendrachar
  • Publication number: 20250175420
    Abstract: Symmetric networking techniques disclosed herein can be applied by gateway routers in cloud networks. The techniques can ensure that both outbound traffic received at a cloud from a branch device and return traffic directed from the cloud back to the branch device are processed by a same gateway router. The gateway router can use network address translation to insert IP addresses from an inside pool and an outside pool assigned to the router.
    Type: Application
    Filed: January 29, 2025
    Publication date: May 29, 2025
    Inventors: Balaji Sundararajan, Ramakumara Kariyappa, Nithin Bangalore Raju, Bhairav Dutia, Vivek Agarwal, Satish Kumar Mahadevan, Ankur Bhargava
  • Patent number: 12293224
    Abstract: A method for allocating resources of a virtual controller is disclosed. The method comprises: allocating resources of a virtual controller to a first tenant, wherein the first tenant is allocated a first tenant quantity of guaranteed resources of the virtual controller and a second tenant is allocated a second tenant quantity of guaranteed resources of the virtual controller; determining that resources requested by the first tenant are greater than the first tenant quantity of guaranteed resources; determining that the virtual controller has unutilized resources sufficient to at least partially provide additional resources beyond the first tenant quantity of guaranteed resources to the first tenant; and temporarily provisioning the additional resources to the first tenant, wherein the additional resources are greater than the first tenant quantity of guaranteed resources.
    Type: Grant
    Filed: July 30, 2021
    Date of Patent: May 6, 2025
    Assignee: Cisco Technology, Inc.
    Inventors: Xiaohu Wang, Ajeet Pal Singh Gill, Srilatha Tangirala, Nithin Bangalore Raju, Prabahar Radhakrishnan, Vivek Agarwal, Balaji Sundararajan
  • Patent number: 12273267
    Abstract: Symmetric networking techniques disclosed herein can be applied by gateway routers in cloud networks. The techniques can ensure that both outbound traffic received at a cloud from a branch device and return traffic directed from the cloud back to the branch device are processed by a same gateway router. The gateway router can use network address translation to insert IP addresses from an inside pool and an outside pool assigned to the router.
    Type: Grant
    Filed: March 14, 2024
    Date of Patent: April 8, 2025
    Assignee: Cisco Technology, Inc.
    Inventors: Balaji Sundararajan, Ramakumara Kariyappa, Nithin Bangalore Raju, Bhairav Dutia, Vivek Agarwal, Satish Mahadevan, Ankur Bhargava
  • Publication number: 20250030638
    Abstract: According to certain embodiments, a method by a network device includes receiving a handshake message for a traffic flow from a Software-Defined Wide-Area Network (SDWAN) and determining, from a traffic policy, whether the traffic flow should be symmetrical. In response to determining from the traffic policy that the traffic flow should be symmetrical, the method further includes performing a flow lookup on the traffic flow to determine if the network device originated the traffic flow. In response to determining that the network device did not originate the traffic flow, the method further includes determining a second network device that originated the traffic flow and sending the handshake message for the traffic flow to the second network device in order to maintain symmetry for the traffic flow.
    Type: Application
    Filed: October 7, 2024
    Publication date: January 23, 2025
    Inventors: Balaji Sundararajan, Srilatha Tangirala, Ajeet Pal Singh Gill, Vivek Agarwal, Nithin Bangalore Raju
  • Patent number: 12160370
    Abstract: Route exchange in a plurality of network controller appliances on a per-tenant basis is disclosed. In one aspect, a method includes receiving, from a network management system and at a first network controller appliance, a designation of at least two tenants to be hosted on the first network controller appliance, the first network controller appliance being one of a plurality of network controller appliances in a SD-WAN; sending, from the first network controller appliance to other network controller appliances of the plurality of network controller appliances, a tenant list query message to obtain a corresponding tenant list of each of the other network controller appliances; and receiving a corresponding response from each of the other network controller appliances indicating the corresponding tenant list of each of the other network controller appliances, the corresponding response being used to update the tenant list on the first network controller appliance.
    Type: Grant
    Filed: February 9, 2023
    Date of Patent: December 3, 2024
    Assignee: Cisco Technology, Inc.
    Inventors: Srilatha Tangirala, Nithin Bangalore Raju, Ananya Raval, Prabahar Radhakrishnan, Vivek Agarwal, Balaji Sundararajan
  • Patent number: 12132660
    Abstract: According to certain embodiments, a method by a network device includes receiving a handshake message for a traffic flow from a Software-Defined Wide-Area Network (SDWAN) and determining, from a traffic policy, whether the traffic flow should be symmetrical. In response to determining from the traffic policy that the traffic flow should be symmetrical, the method further includes performing a flow lookup on the traffic flow to determine if the network device originated the traffic flow. In response to determining that the network device did not originate the traffic flow, the method further includes determining a second network device that originated the traffic flow and sending the handshake message for the traffic flow to the second network device in order to maintain symmetry for the traffic flow.
    Type: Grant
    Filed: April 12, 2022
    Date of Patent: October 29, 2024
    Assignee: CISCO TECHNOLOGY, INC.
    Inventors: Balaji Sundararajan, Srilatha Tangirala, Ajeet Pal Singh Gill, Vivek Agarwal, Nithin Bangalore Raju
  • Publication number: 20240333689
    Abstract: Techniques for utilizing a network gateway provisioned in a software-defined network to verify service readiness of one or more security service(s) of a service chain prior to redirecting network traffic along a given data-path to the security service(s). The gateway may be configured to open a specific port on a network device hosting a security service to transmit network policies and/or test network traffic to the security service. The network gateway may host a virtual source and/or a virtual destination and cause the virtual source to send test network traffic through the security service via the port and to the virtual destination. The gateway may then utilize the received test network traffic to determine whether a given security service satisfies a threshold health and/or functionality measurement. Once it is determined that the security service satisfies the thresholds, the gateway may cause network traffic to be redirected to the security service.
    Type: Application
    Filed: March 30, 2023
    Publication date: October 3, 2024
    Inventors: Pritam Baruah, Balaji Sundararajan, Nithin Bangalore Raju, Srilatha Tangirala, Ramakumara Kariyappa
  • Publication number: 20240267325
    Abstract: Symmetric networking techniques disclosed herein can be applied by gateway routers in cloud networks. The techniques can ensure that both outbound traffic received at a cloud from a branch device and return traffic directed from the cloud back to the branch device are processed by a same gateway router. The gateway router can use network address translation to insert IP addresses from an inside pool and an outside pool assigned to the router.
    Type: Application
    Filed: March 14, 2024
    Publication date: August 8, 2024
    Inventors: Balaji Sundararajan, Ramakumara Kariyappa, Nithin Bangalore Raju, Bhairav Dutia, Vivek Agarwal, Satish Mahadevan, Ankur Bhargava
  • Publication number: 20240223397
    Abstract: Techniques for virtualizing tenant transport interfaces configured to implement pertenant network routing attribute differentiation in each tenant overlay of a multisite wide area network (WAN) and share the virtual transport interfaces between multi-tenant edge (MTE) devices providing transport services to tenant devices based on a defined tenant tier model. A Software-Defined Networking (SDN) controller may receive a physical transport interface and/or a device type associated with a tenant device. The SDN controller may determine a virtual transport interface for the tenant device based on a tier associated with the tenant. MTE device(s) may utilize the physical transport interface to establish sessions with other MTE device(s) in the WAN. The virtual transport interface may be utilized by MTE devices to implement and/or enforce network routing attributes when forwarding network traffic associated with the tenant via the sessions established between the MTE devices through the WAN.
    Type: Application
    Filed: March 18, 2024
    Publication date: July 4, 2024
    Inventors: Balaji Sundararajan, Ajeet Pal Singh Gill, Srilatha Tangirala, Nithin Bangalore Raju, Ravi Kiran Chintallapudi, Pradeepan Kannawadi, Ganesh Devendrachar
  • Publication number: 20240146565
    Abstract: Techniques for virtualizing tenant transport interfaces configured to implement per-tenant network routing attribute differentiation in each tenant overlay of a multisite wide area network (WAN) and share the virtual transport interfaces between multi-tenant edge (MTE) devices providing transport services to tenant devices based on a defined tenant tier model. A Software-Defined Networking (SDN) controller may receive a physical transport interface and/or a device type associated with a tenant device. The SDN controller may determine a virtual transport interface for the tenant device based on a tier associated with the tenant. MTE device(s) may utilize the physical transport interface to establish sessions with other MTE device(s) in the WAN. The virtual transport interface may be utilized by MTE devices to implement and/or enforce network routing attributes when forwarding network traffic associated with the tenant via the sessions established between the MTE devices through the WAN.
    Type: Application
    Filed: November 2, 2022
    Publication date: May 2, 2024
    Inventors: Ajeet Pal Singh Gill, Balaji Sundararajan, Srilatha Tangirala, Nithin Bangalore Raju, Ravi Kiran Chintallapudi, Pradeepan Kannawadi, Ganesh Devendrachar
  • Patent number: 11962498
    Abstract: Symmetric networking techniques disclosed herein can be applied by gateway routers in cloud networks. The techniques can ensure that both outbound traffic received at a cloud from a branch device and return traffic directed from the cloud back to the branch device are processed by a same gateway router. The gateway router can use network address translation to insert IP addresses from an inside pool and an outside pool assigned to the router.
    Type: Grant
    Filed: June 9, 2023
    Date of Patent: April 16, 2024
    Assignee: Cisco Technology, Inc.
    Inventors: Balaji Sundararajan, Ramakumara Kariyappa, Nithin Bangalore Raju, Bhairav Dutia, Vivek Agarwal, Satish Kumar Mahadevan, Ankur Bhargava
  • Patent number: 11962429
    Abstract: Techniques for virtualizing tenant transport interfaces configured to implement per-tenant network routing attribute differentiation in each tenant overlay of a multisite wide area network (WAN) and share the virtual transport interfaces between multi-tenant edge (MTE) devices providing transport services to tenant devices based on a defined tenant tier model. A Software-Defined Networking (SDN) controller may receive a physical transport interface and/or a device type associated with a tenant device. The SDN controller may determine a virtual transport interface for the tenant device based on a tier associated with the tenant. MTE device(s) may utilize the physical transport interface to establish sessions with other MTE device(s) in the WAN. The virtual transport interface may be utilized by MTE devices to implement and/or enforce network routing attributes when forwarding network traffic associated with the tenant via the sessions established between the MTE devices through the WAN.
    Type: Grant
    Filed: November 2, 2022
    Date of Patent: April 16, 2024
    Assignee: Cisco Technology, Inc.
    Inventors: Balaji Sundararajan, Srilatha Tangirala, Ajeet Pal Singh Gill, Nithin Bangalore Raju, Ravi Kiran Chintallapudi, Pradeepan Kannawadi, Ganesh Devendrachar
  • Patent number: 11943143
    Abstract: In some embodiments, a method adds a specific route for an IP address that is associated with a first workload into a routing table for a first network device in a first site in response to the first workload being migrated from a second site to the first site. The first network device receives a packet from a second workload for the first workload and determines that a destination of the packet matches the specific route in the routing table. The method routes the packet from the second workload to the first workload using the specific route in the routing table without sending the packet to the second site.
    Type: Grant
    Filed: January 19, 2022
    Date of Patent: March 26, 2024
    Assignee: VMware, Inc.
    Inventors: Hongwei Zhu, Dileep Devireddy, Ganesan Chandrashekhar, Feng Gu, Sreenivas Duvvuri, Chidambareswaran Raman, Nithin Bangalore Raju
  • Publication number: 20240073084
    Abstract: Techniques and architecture are described for a pull model for obtaining and implementing config changes on network devices are described herein. A user submits intent configuration to the network controller that needs to be delivered to several network sites. The network controller generates a config file. The network controller sends a pull notification message to all network devices that need to retrieve the config file. This pull notification message only contains a corresponding transaction ID for each network device and a location for the network device to use to pull the config file. The network devices may utilize a HTTP REST API exposed by the network controller to obtain the config file from the network controller. The network devices may utilize a REST API exposed by the network controller to reply with statuses of the configuration transaction. The techniques and architecture may be applied to multi-tenant network devices.
    Type: Application
    Filed: March 17, 2023
    Publication date: February 29, 2024
    Inventors: Bhairav Dutia, Manish Jiwansingh Mehra, Upendar Surabhi, Sharmishtha Upadhyay, Sanjeev Pandurang Tondale, Yanbo Zhang, Yogesh Mittal, Nithin Bangalore Raju, Srilatha Tangirala, Balaji Sundararajan
  • Publication number: 20230327994
    Abstract: According to certain embodiments, a method by a network device includes receiving a handshake message for a traffic flow from a Software-Defined Wide-Area Network (SDWAN) and determining, from a traffic policy, whether the traffic flow should be symmetrical. In response to determining from the traffic policy that the traffic flow should be symmetrical, the method further includes performing a flow lookup on the traffic flow to determine if the network device originated the traffic flow. In response to determining that the network device did not originate the traffic flow, the method further includes determining a second network device that originated the traffic flow and sending the handshake message for the traffic flow to the second network device in order to maintain symmetry for the traffic flow.
    Type: Application
    Filed: April 12, 2022
    Publication date: October 12, 2023
    Inventors: Balaji Sundararajan, Srilatha Tangirala, Ajeet Pal Singh Gill, Vivek Agarwal, Nithin Bangalore Raju
  • Publication number: 20230188502
    Abstract: In one embodiment, a method includes identifying, by a router, a first tenant. The first tenant is associated with a first tenant virtual private network (VPN). The method also includes determining, by the router, a mapping of the first tenant VPN to a first device VPN and generating, by the router, a first label representing the first device VPN. The method further includes adding, by the router, the first label to a first network packet and communicating, by the router, the first network packet with the first label to a controller.
    Type: Application
    Filed: March 31, 2022
    Publication date: June 15, 2023
    Inventors: Samir Thoria, Ajeet Pal Singh Gill, Srilatha Tangirala, Balaji Sundararajan, Nithin Bangalore Raju, Vivek Agarwal
  • Publication number: 20230188476
    Abstract: Route exchange in a plurality of network controller appliances on a per-tenant basis is disclosed. In one aspect, a method includes receiving, from a network management system and at a first network controller appliance, a designation of at least two tenants to be hosted on the first network controller appliance, the first network controller appliance being one of a plurality of network controller appliances in a SD-WAN; sending, from the first network controller appliance to other network controller appliances of the plurality of network controller appliances, a tenant list query message to obtain a corresponding tenant list of each of the other network controller appliances; and receiving a corresponding response from each of the other network controller appliances indicating the corresponding tenant list of each of the other network controller appliances, the corresponding response being used to update the tenant list on the first network controller appliance.
    Type: Application
    Filed: February 9, 2023
    Publication date: June 15, 2023
    Inventors: Srilatha Tangirala, Nithin Bangalore Raju, Ananya Raval, Prabahar Radhakrishnan, Vivek Agarwal, Balaji Sundararajan
  • Patent number: 11588752
    Abstract: Route exchange in a plurality of network controller appliances on a per-tenant basis is disclosed. In one aspect, a method includes receiving, from a network management system and at a first network controller appliance, a designation of at least two tenants to be hosted on the first network controller appliance, the first network controller appliance being one of a plurality of network controller appliances in a SD-WAN; sending, from the first network controller appliance to other network controller appliances of the plurality of network controller appliances, a tenant list query message to obtain a corresponding tenant list of each of the other network controller appliances; and receiving a corresponding response from each of the other network controller appliances indicating the corresponding tenant list of each of the other network controller appliances, the corresponding response being used to update the tenant list on the first network controller appliance.
    Type: Grant
    Filed: July 29, 2021
    Date of Patent: February 21, 2023
    Assignee: Cisco Technology, Inc.
    Inventors: Srilatha Tangirala, Nithin Bangalore Raju, Ananya Raval, Prabahar Radhakrishnan, Vivek Agarwal, Balaji Sundararajan