Patents by Inventor Sreeram Iyer

Sreeram Iyer 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: 11909612
    Abstract: Some embodiments provide a novel method of performing health monitoring for resources associated with a global server load balancing (GSLB) system. This system is implemented by several domain name system (DNS) servers that perform DNS services for resources located at several geographically separate sites. The method identifies several different groupings of the resources. It then assigns the health monitoring of the different resource groups to different DNS servers. The method then configures each particular DNS server (1) to send health monitoring messages to the particular group of resources assigned to the particular DNS server, (2) to generate data by analyzing responses to the sent health monitoring messages, and (3) to distribute the generated data to the other DNS servers. The method in some embodiments is performed by a set of one or more controllers.
    Type: Grant
    Filed: January 28, 2023
    Date of Patent: February 20, 2024
    Assignee: VMware LLC
    Inventors: Murali Basavaiah, Anand Parthasarathy, Sreeram Iyer, Sambit Kumar Das, Narasimhan Gomatam Mandeyam
  • Publication number: 20240022598
    Abstract: Some embodiments provide a two-tier DNS (Domain Name System) service for processing DNS requests. In some embodiments, the two-tier DNS service deploys first and second tiers of service machines, with the second-tier having several groups of service machines each of which is configured to resolve DNS requests for a different set of domain names than the other second-tier group(s). Each service machine in the first-tier is configured to identify the second-tier group responsible for each particular DNS request that the service machine receives for each particular domain name, and to forward the particular DNS request to the second-tier group that it identifies for the particular DNS request. The first-tier DNS service in some embodiments has only one group of service machines. Each first or second service machine group in some embodiments can have one or more service machines, and can be scaled up or down to add or remove service machines to the group (e.g., through an active/active layer 3 scaleout with BGP).
    Type: Application
    Filed: June 19, 2023
    Publication date: January 18, 2024
    Inventors: Sreeram Iyer, Murali Basavaiah, Prasad Rao, Shyam Prasad Anisetti, Naveen Dhillon
  • Publication number: 20240022538
    Abstract: Some embodiments provide a two-tier DNS (Domain Name System) service for processing DNS requests. In some embodiments, the two-tier DNS service deploys first and second tiers of service machines, with the second-tier having several groups of service machines each of which is configured to resolve DNS requests for a different set of domain names than the other second-tier group(s). Each service machine in the first-tier is configured to identify the second-tier group responsible for each particular DNS request that the service machine receives for each particular domain name, and to forward the particular DNS request to the second-tier group that it identifies for the particular DNS request. The first-tier DNS service in some embodiments has only one group of service machines. Each first or second service machine group in some embodiments can have one or more service machines, and can be scaled up or down to add or remove service machines to the group (e.g., through an active/active layer 3 scaleout with BGP).
    Type: Application
    Filed: June 19, 2023
    Publication date: January 18, 2024
    Inventors: Sreeram Iyer, Murali Basavaiah, Prasad Rao, Shyam Prasad Anisetti, Naveen Dhillon
  • Publication number: 20240022539
    Abstract: Some embodiments provide a two-tier DNS (Domain Name System) service for processing DNS requests. In some embodiments, the two-tier DNS service deploys first and second tiers of service machines, with the second-tier having several groups of service machines each of which is configured to resolve DNS requests for a different set of domain names than the other second-tier group(s). Each service machine in the first-tier is configured to identify the second-tier group responsible for each particular DNS request that the service machine receives for each particular domain name, and to forward the particular DNS request to the second-tier group that it identifies for the particular DNS request. The first-tier DNS service in some embodiments has only one group of service machines. Each first or second service machine group in some embodiments can have one or more service machines, and can be scaled up or down to add or remove service machines to the group (e.g., through an active/active layer 3 scaleout with BGP).
    Type: Application
    Filed: June 19, 2023
    Publication date: January 18, 2024
    Inventors: Sreeram Iyer, Murali Basavaiah, Prasad Rao, Shyam Prasad Anisetti, Naveen Dhillon
  • Publication number: 20240015133
    Abstract: Some embodiments provide a method that, at a first domain name system (DNS) cluster of a set of DNS clusters, receives a DNS request from a client. The first DNS cluster identifies, based on an identifier of the client in the DNS request, a home DNS cluster of the client. The method forwards the DNS request to the home DNS cluster. The home DNS cluster supplies a DNS response to the client. Identifying the home DNS cluster, in some embodiments, includes performing a hash on the identifier of the client. Supplying the DNS response, in some embodiments, includes receiving a virtual IP (VIP) address associated with one of a plurality of sets of application servers to the client and providing the received VIP address to the client in the DNS response.
    Type: Application
    Filed: September 22, 2023
    Publication date: January 11, 2024
    Inventors: Sudarshana Kandachar Sridhara Rao, Rajagopal Sreenivasan, Raghav Kempanna, Sreeram Iyer
  • Publication number: 20230403319
    Abstract: Some embodiments provide a method of implementing capacity-aware load balancing across a set of data compute nodes (DCNs) by reducing latency for the set of DCNs. From the set of DCNs, the method identifies (1) a first subset of DCNs including DCNs that have a latency that is higher than an average latency computed for the set of DCNs and (2) a second subset of DCNs including DCNs that have a latency that is lower than the average latency computed for the set of DCNs. For each DCN in the first subset of DCNs, the method assigns to the DCN a weight value that corresponds to a target latency computed for the set of DCNs. Based on the assigned weight values for the first subset of DCNs, the method computes an excess weight value to be redistributed across the second subset of DCNs. The method redistributes the computed excess weight value across the second subset of DCNs.
    Type: Application
    Filed: July 28, 2023
    Publication date: December 14, 2023
    Inventors: Sachin Pandey, Rohan Gandhi, Sreeram Iyer, Santosh Pallagatti Kotrabasappa, Sairam Veeraswamy
  • Patent number: 11799824
    Abstract: Some embodiments provide a method that, at a first domain name system (DNS) cluster of a set of DNS clusters, receives a DNS request from a client. The first DNS cluster identifies, based on an identifier of the client in the DNS request, a home DNS cluster of the client. The method forwards the DNS request to the home DNS cluster. The home DNS cluster supplies a DNS response to the client. Identifying the home DNS cluster, in some embodiments, includes performing a hash on the identifier of the client. Supplying the DNS response, in some embodiments, includes receiving a virtual IP (VIP) address associated with one of a plurality of sets of application servers to the client and providing the received VIP address to the client in the DNS response.
    Type: Grant
    Filed: June 10, 2022
    Date of Patent: October 24, 2023
    Assignee: VMWARE, INC.
    Inventors: Sudarshana Kandachar Sridhara Rao, Rajagopal Sreenivasan, Raghav Kempanna, Sreeram Iyer
  • Patent number: 11792155
    Abstract: Some embodiments provide a method that, at a first domain name system (DNS) cluster of a set of DNS clusters, receives a DNS request from a client. The first DNS cluster identifies, based on an identifier of the client in the DNS request, a home DNS cluster of the client. The method forwards the DNS request to the home DNS cluster. The home DNS cluster supplies a DNS response to the client. Identifying the home DNS cluster, in some embodiments, includes performing a hash on the identifier of the client. Supplying the DNS response, in some embodiments, includes receiving a virtual IP (VIP) address associated with one of a plurality of sets of application servers to the client and providing the received VIP address to the client in the DNS response.
    Type: Grant
    Filed: June 10, 2022
    Date of Patent: October 17, 2023
    Assignee: VMWARE, INC.
    Inventors: Sudarshana Kandachar Sridhara Rao, Rajagopal Sreenivasan, Raghav Kempanna, Sreeram Iyer
  • Patent number: 11757983
    Abstract: Some embodiments provide a method of implementing capacity-aware load balancing across a set of data compute nodes (DCNs) by reducing latency for the set of DCNs. From the set of DCNs, the method identifies (1) a first subset of DCNs including DCNs that have a latency that is higher than an average latency computed for the set of DCNs and (2) a second subset of DCNs including DCNs that have a latency that is lower than the average latency computed for the set of DCNs. For each DCN in the first subset of DCNs, the method assigns to the DCN a weight value that corresponds to a target latency computed for the set of DCNs. Based on the assigned weight values for the first subset of DCNs, the method computes an excess weight value to be redistributed across the second subset of DCNs. The method redistributes the computed excess weight value across the second subset of DCNs.
    Type: Grant
    Filed: May 17, 2022
    Date of Patent: September 12, 2023
    Assignee: VMWARE, INC.
    Inventors: Sachin Pandey, Rohan Gandhi, Sreeram Iyer, Santosh Pallagatti Kotrabasappa, Sairam Veeraswamy
  • Publication number: 20230171171
    Abstract: Some embodiments provide a novel method of performing health monitoring for resources associated with a global server load balancing (GSLB) system. This system is implemented by several domain name system (DNS) servers that perform DNS services for resources located at several geographically separate sites. The method identifies several different groupings of the resources. It then assigns the health monitoring of the different resource groups to different DNS servers. The method then configures each particular DNS server (1) to send health monitoring messages to the particular group of resources assigned to the particular DNS server, (2) to generate data by analyzing responses to the sent health monitoring messages, and (3) to distribute the generated data to the other DNS servers. The method in some embodiments is performed by a set of one or more controllers.
    Type: Application
    Filed: January 28, 2023
    Publication date: June 1, 2023
    Inventors: Murali Basavaiah, Anand Parthasarathy, Sreeram Iyer, Sambit Kumar Das, Narasimhan Gomatam Mandeyam
  • Patent number: 11582120
    Abstract: Some embodiments provide a novel method of performing health monitoring for resources associated with a global server load balancing (GSLB) system. This system is implemented by several domain name system (DNS) servers that perform DNS services for resources located at several geographically separate sites. The method identifies several different groupings of the resources. It then assigns the health monitoring of the different resource groups to different DNS servers. The method then configures each particular DNS server (1) to send health monitoring messages to the particular group of resources assigned to the particular DNS server, (2) to generate data by analyzing responses to the sent health monitoring messages, and (3) to distribute the generated data to the other DNS servers. The method in some embodiments is performed by a set of one or more controllers.
    Type: Grant
    Filed: January 17, 2020
    Date of Patent: February 14, 2023
    Assignee: VMWARE, INC.
    Inventors: Murali Basavaiah, Anand Parthasarathy, Sreeram Iyer, Sambit Kumar Das, Narasimhan Gomatam Mandeyam
  • Publication number: 20220400098
    Abstract: Some embodiments provide a method that, at a first domain name system (DNS) cluster of a set of DNS clusters, receives a DNS request from a client. The first DNS cluster identifies, based on an identifier of the client in the DNS request, a home DNS cluster of the client. The method forwards the DNS request to the home DNS cluster. The home DNS cluster supplies a DNS response to the client. Identifying the home DNS cluster, in some embodiments, includes performing a hash on the identifier of the client. Supplying the DNS response, in some embodiments, includes receiving a virtual IP (VIP) address associated with one of a plurality of sets of application servers to the client and providing the received VIP address to the client in the DNS response.
    Type: Application
    Filed: June 10, 2022
    Publication date: December 15, 2022
    Inventors: Sudarshana Kandachar Sridhara Rao, Rajagopal Sreenivasan, Raghav Kempanna, Sreeram Iyer
  • Publication number: 20220400097
    Abstract: Some embodiments provide a method that, at a first domain name system (DNS) cluster of a set of DNS clusters, receives a DNS request from a client. The first DNS cluster identifies, based on an identifier of the client in the DNS request, a home DNS cluster of the client. The method forwards the DNS request to the home DNS cluster. The home DNS cluster supplies a DNS response to the client. Identifying the home DNS cluster, in some embodiments, includes performing a hash on the identifier of the client. Supplying the DNS response, in some embodiments, includes receiving a virtual IP (VIP) address associated with one of a plurality of sets of application servers to the client and providing the received VIP address to the client in the DNS response.
    Type: Application
    Filed: June 10, 2022
    Publication date: December 15, 2022
    Inventors: Sudarshana Kandachar Sridhara Rao, Rajagopal Sreenivasan, Raghav Kempanna, Sreeram Iyer
  • Patent number: 11477274
    Abstract: Example methods and systems for capability-aware service request distribution are described. In one example, a network element may obtain a set of capability information associated with multiple load balancers capable of service request handling and identify varying capability levels among the multiple load balancers. The network element may assign unequal path cost information to the multiple load balancers to indicate the varying capability levels. The unequal path cost information may include (a) a first path cost that is assigned to the first load balancer; and (b) a second path cost that is assigned to the second load balancer and different to the first path cost to indicate the lower capability level of the second load balancer compared to the first load balancer. In response to detecting a service request, the service request may be steered towards one of the multiple load balancers based on the unequal path cost information.
    Type: Grant
    Filed: January 6, 2021
    Date of Patent: October 18, 2022
    Assignee: VMWARE, INC.
    Inventors: Raghav Kempanna, Sreeram Iyer, Prasad Rao, Rajagopal Sreenivasan, Sudarshana Kandachar Sridhara Rao, Rakesh Kumar R
  • Publication number: 20220291970
    Abstract: Core to resource and resource to core mapping is disclosed. In an embodiment, a method includes obtaining an input pattern including a plurality of resource identifiers corresponding to resources. The method further includes applying the input pattern to a guaranteed regular and uniform distribution process to obtain a distribution pattern that indicates a distribution of resources across cores or a distribution of the cores across the resources. The method further includes distributing the resources across the cores or distributing the cores across the resources according to the distribution pattern.
    Type: Application
    Filed: May 30, 2022
    Publication date: September 15, 2022
    Inventors: Raju Kumar, Sreeram Iyer
  • Publication number: 20220217202
    Abstract: Example methods and systems for capability-aware service request distribution are described. In one example, a network element may obtain a set of capability information associated with multiple load balancers capable of service request handling and identify varying capability levels among the multiple load balancers. The network element may assign unequal path cost information to the multiple load balancers to indicate the varying capability levels. The unequal path cost information may include (a) a first path cost that is assigned to the first load balancer; and (b) a second path cost that is assigned to the second load balancer and different to the first path cost to indicate the lower capability level of the second load balancer compared to the first load balancer. In response to detecting a service request, the service request may be steered towards one of the multiple load balancers based on the unequal path cost information.
    Type: Application
    Filed: January 6, 2021
    Publication date: July 7, 2022
    Applicant: VMware, Inc.
    Inventors: Raghav KEMPANNA, Sreeram IYER, Prasad RAO, Rajagopal SREENIVASAN, Sudarshana KANDACHAR SRIDHARA RAO, Rakesh KUMAR R
  • Patent number: 11347561
    Abstract: Core to resource and resource to core mapping is disclosed. In an embodiment, a method includes obtaining an input pattern including a plurality of resource identifiers corresponding to resources. The method further includes applying the input pattern to a guaranteed regular and uniform distribution process to obtain a distribution pattern that indicates a distribution of resources across cores or a distribution of the cores across the resources. The method further includes distributing the resources across the cores or distributing the cores across the resources according to the distribution pattern.
    Type: Grant
    Filed: June 22, 2018
    Date of Patent: May 31, 2022
    Assignee: VMWARE, INC.
    Inventors: Raju Kumar, Sreeram Iyer
  • Patent number: 11290358
    Abstract: Some embodiments provide a novel method of performing health monitoring for resources associated with a global server load balancing (GSLB) system. This system is implemented by several domain name system (DNS) servers that perform DNS services for resources located at several geographically separate sites. The method identifies several different groupings of the resources. It then assigns the health monitoring of the different resource groups to different DNS servers. The method then configures each particular DNS server (1) to send health monitoring messages to the particular group of resources assigned to the particular DNS server, (2) to generate data by analyzing responses to the sent health monitoring messages, and (3) to distribute the generated data to the other DNS servers. The method in some embodiments is performed by a set of one or more controllers.
    Type: Grant
    Filed: January 17, 2020
    Date of Patent: March 29, 2022
    Assignee: VMWARE, INC.
    Inventors: Murali Basavaiah, Anand Parthasarathy, Sreeram Iyer, Sambit Kumar Das, Narasimhan Gomatam Mandeyam
  • Patent number: 10931548
    Abstract: In an embodiment, a method includes selecting, among service engines (SEs) executing on a respective plurality of hosts, a set of one or more SEs to perform health monitoring of an application, where a plurality of instances of the application are executing on at least some of the hosts, and the selected SE(s) includes a subset of the SEs. The method includes collecting health monitor data from the selected SE(s), determining a health condition based at least in part on the collected data, and outputting the health condition. In another embodiment, a method includes receiving, at a first SE of a first host among a plurality of hosts, configuration information pertaining to a subset of application instances executing on corresponding ones of the plurality of hosts, obtaining health data pertaining to the subset of application instances, and outputting the health data to be shared by the plurality of hosts.
    Type: Grant
    Filed: March 8, 2017
    Date of Patent: February 23, 2021
    Assignee: VMWARE, INC.
    Inventors: Sreeram Iyer, Aditya Somasundara, Raju Kumar, Praveen Yalagandula
  • Publication number: 20200382584
    Abstract: Some embodiments provide a novel method of performing health monitoring for resources associated with a global server load balancing (GSLB) system. This system is implemented by several domain name system (DNS) servers that perform DNS services for resources located at several geographically separate sites. The method identifies several different groupings of the resources. It then assigns the health monitoring of the different resource groups to different DNS servers. The method then configures each particular DNS server (1) to send health monitoring messages to the particular group of resources assigned to the particular DNS server, (2) to generate data by analyzing responses to the sent health monitoring messages, and (3) to distribute the generated data to the other DNS servers. The method in some embodiments is performed by a set of one or more controllers.
    Type: Application
    Filed: January 17, 2020
    Publication date: December 3, 2020
    Inventors: Murali Basavaiah, Anand Parthasarathy, Sreeram Iyer, Sambit Kumar Das, Narasimhan Gomatam Mandeyam