Patents by Inventor Srihari Raju Vegesna

Srihari Raju Vegesna 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: 11469922
    Abstract: A network system for a data center is described in which a switch fabric provides interconnectivity such that any servers may communicate packet data to any other of the servers using any of a number of parallel data paths. Moreover, according to the techniques described herein, edge-positioned access nodes, permutation devices and core switches of the switch fabric may be configured and arranged in a way such that the parallel data paths provide single L2/L3 hop, full mesh interconnections between any pairwise combination of the access nodes, even in massive data centers having tens of thousands of servers. The access nodes may be arranged within access node groups, and permutation devices may be used within the access node groups to spray packets across the access node groups prior to injection within the switch fabric, thereby increasing the fanout and scalability of the network system.
    Type: Grant
    Filed: April 27, 2020
    Date of Patent: October 11, 2022
    Assignee: FUNGIBLE, INC.
    Inventors: Deepak Goel, Pradeep Sindhu, Srihari Raju Vegesna, Robert William Bowdidge, Ayaskant Pani
  • Patent number: 11412076
    Abstract: Network access node virtual fabrics configured dynamically over an underlay network are described. A centralized controller, such as a software-defined networking (SDN) controller, of a packet switched network is configured to establish one or more virtual fabrics as overlay networks on top of the physical underlay network of the packet switched network. For example, the SDN controller may define multiple sets of two of more access nodes connected to the packet switched network, and the access nodes of a given one of the sets may use a new data transmission protocol, referred to generally herein as a fabric control protocol (FCP), to dynamically setup tunnels as a virtual fabric over the packet switched network. The FCP tunnels may include all or a subset of the parallel data paths through the packet switched network between the access nodes for a given virtual fabric.
    Type: Grant
    Filed: January 21, 2021
    Date of Patent: August 9, 2022
    Assignee: FUNGIBLE, INC.
    Inventors: Deepak Goel, Narendra Jayawant Gathoo, Philip A. Thomas, Srihari Raju Vegesna, Pradeep Sindhu, Wael Noureddine, Robert William Bowdidge, Ayaskant Pani, Gopesh Goyal
  • Publication number: 20220174133
    Abstract: This disclosure describes techniques for performing communications between devices using various aspects of Ethernet standards. As further described herein, a protocol is disclosed that may be used for communications between devices, where the communications take place over a physical connection complying with Ethernet standards. Such a protocol may enable reliable and in-order delivery of frames between devices, while following Ethernet physical layer rules, Ethernet symbol encoding, Ethernet lane alignment, and/or Ethernet frame formats.
    Type: Application
    Filed: February 15, 2022
    Publication date: June 2, 2022
    Inventors: Pradeep Sindhu, Deepak Goel, Srihari Raju Vegesna, Aibing Zhou, Shashi Kumar, Rohit Sunkam Ramanujam
  • Publication number: 20220103661
    Abstract: A fabric control protocol is described for use within a data center in which a switch fabric provides full mesh interconnectivity such that any of the servers may communicate packet data for a given packet flow to any other of the servers using any of a number of parallel data paths within the data center switch fabric. The fabric control protocol enables spraying of individual packets for a given packet flow across some or all of the multiple parallel data paths in the data center switch fabric and, optionally, reordering of the packets for delivery to the destination. The fabric control protocol may provide end-to-end bandwidth scaling and flow fairness within a single tunnel based on endpoint-controlled requests and grants for flows. In some examples, the fabric control protocol packet structure is carried over an underlying protocol, such as the User Datagram Protocol (UDP).
    Type: Application
    Filed: November 12, 2021
    Publication date: March 31, 2022
    Inventors: Deepak Goel, Narendra Jayawant Gathoo, Philip A. Thomas, Srihari Raju Vegesna, Pradeep Sindhu, Wael Noureddine, Robert William Bowdidge, Ayaskant Pani, Gopesh Goyal
  • Patent number: 11272041
    Abstract: This disclosure describes techniques for performing communications between devices using various aspects of Ethernet standards. As further described herein, a protocol is disclosed that may be used for communications between devices, where the communications take place over a physical connection complying with Ethernet standards. Such a protocol may enable reliable and in-order delivery of frames between devices, while following Ethernet physical layer rules, Ethernet symbol encoding, Ethernet lane alignment, and/or Ethernet frame formats.
    Type: Grant
    Filed: October 5, 2020
    Date of Patent: March 8, 2022
    Assignee: Fungible, Inc.
    Inventors: Pradeep Sindhu, Deepak Goel, Srihari Raju Vegesna, Aibing Zhou, Shashi Kumar, Rohit Sunkam Ramanujam
  • Patent number: 11178262
    Abstract: A fabric control protocol is described for use within a data center in which a switch fabric provides full mesh interconnectivity such that any of the servers may communicate packet data for a given packet flow to any other of the servers using any of a number of parallel data paths within the data center switch fabric. The fabric control protocol enables spraying of individual packets for a given packet flow across some or all of the multiple parallel data paths in the data center switch fabric and, optionally, reordering of the packets for delivery to the destination. The fabric control protocol may provide end-to-end bandwidth scaling and flow fairness within a single tunnel based on endpoint-controlled requests and grants for flows. In some examples, the fabric control protocol packet structure is carried over an underlying protocol, such as the User Datagram Protocol (UDP).
    Type: Grant
    Filed: September 28, 2018
    Date of Patent: November 16, 2021
    Assignee: Fungible, Inc.
    Inventors: Deepak Goel, Narendra Jayawant Gathoo, Phillip A. Thomas, Srihari Raju Vegesna, Pradeep Sindhu, Wael Noureddine, Robert William Bowdidge, Ayaskant Pani, Gopesh Goyal
  • Publication number: 20210320820
    Abstract: A fabric control protocol (FCP) and packet forwarding mechanisms are described that maximize utilization of bandwidth within massive, large-scale data centers having multi-stage data center switch fabric topologies, such as topologies that include a third switching layer formed by super spine switches. Automatic generation of data plane forwarding information referred to as FCP path information enumerates, for each data processing unit (DPU), the available FCP paths. The FCP path information may be based on unique combinations of peak points of the switch fabric for a given DPU with FCP colors assigned to network links that are used to multi-home the DPU to the switch fabric.
    Type: Application
    Filed: June 24, 2021
    Publication date: October 14, 2021
    Inventors: Yixing Ruan, Deepak Goel, Narendra Jayawant Gathoo, Philip A. Thomas, Srihari Raju Vegesna, Pradeep Sindhu, Wael Noureddine, Robert William Bowdidge, Ayaskant Pani, Gopesh Goyal
  • Publication number: 20210297343
    Abstract: A fabric control protocol (FCP) is a data transmission protocol that enables spraying of individual packets for a given packet flow across a data center from an ingress interface of the source data processing unit (DPU) across a plurality of parallel data paths of a logical tunnel in the network fabric to the egress interface of the destination DPU. The FCP has congestion control mechanisms used to determine a degree of congestion at the egress interface of the destination DPU and to modify a send window size at the source DPU based on the degree of congestion. Reliable FCP (rFCP) extensions provide reliability enhancements and improved failure resilience within the data center. The rFCP extensions provide an unsolicited mode for low latency operation with enhanced reliability mechanisms. The rFCP extensions provide failure resilience mechanisms to identify and avoid failed paths among multiple parallel data paths within the logical tunnel.
    Type: Application
    Filed: June 10, 2021
    Publication date: September 23, 2021
    Inventors: Srihari Raju Vegesna, Narendra Jayawant Gathoo, Pradeep Sindhu, Jean-Marc Frailong, Gopesh Goyal, Suresh Vemula, John David Huber, Chetan Ambalal Shah
  • Publication number: 20210297351
    Abstract: A fabric control protocol (FCP) is a data transmission protocol that enables spraying of individual packets for a given packet flow across a data center from an ingress interface of the source data processing unit (DPU) across a plurality of parallel data paths of a logical tunnel in the network fabric to the egress interface of the destination DPU. The FCP has congestion control mechanisms used to determine a degree of congestion at the egress interface of the destination DPU and to modify a send window size at the source DPU based on the degree of congestion. Reliable FCP (rFCP) extensions provide reliability enhancements and improved failure resilience within the data center. The rFCP extensions provide an unsolicited mode for low latency operation with enhanced reliability mechanisms. The rFCP extensions provide failure resilience mechanisms to identify and avoid failed paths among multiple parallel data paths within the logical tunnel.
    Type: Application
    Filed: June 10, 2021
    Publication date: September 23, 2021
    Inventors: Srihari Raju Vegesna, Narendra Jayawant Gathoo, Pradeep Sindhu, Jean-Marc Frailong, Gopesh Goyal, Suresh Vemula, John David Huber
  • Publication number: 20210297350
    Abstract: A fabric control protocol (FCP) is a data transmission protocol that enables spraying of individual packets for a given packet flow across a data center from an ingress interface of the source data processing unit (DPU) across a plurality of parallel data paths of a logical tunnel in the network fabric to the egress interface of the destination DPU. The FCP has congestion control mechanisms used to determine a degree of congestion at the egress interface of the destination DPU and to modify a send window size at the source DPU based on the degree of congestion. Reliable FCP (rFCP) extensions provide reliability enhancements and improved failure resilience within the data center. The rFCP extensions provide an unsolicited mode for low latency operation with enhanced reliability mechanisms. The rFCP extensions provide failure resilience mechanisms to identify and avoid failed paths among multiple parallel data paths within the logical tunnel.
    Type: Application
    Filed: June 9, 2021
    Publication date: September 23, 2021
    Inventors: Srihari Raju Vegesna, Narendra Jayawant Gathoo, Pradeep Sindhu, Jean-Marc Frailong, Gopesh Goyal, Suresh Vemula, John David Huber
  • Publication number: 20210218665
    Abstract: Techniques for detecting path failures and reducing packet loss as a result of such failures are described for use within a data center or other environment. For example, a source and/or destination access node may create and/or maintain information about health and/or connectivity for a plurality of ports or paths between the source and destination device and core switches. The source access node may spray packets over a number of paths between the source access node and the destination access node. The source access node may use the information about connectivity for the paths between the source or destination access nodes and the core switches to limit the paths over which packets are sprayed. The source access node may spray packets over paths between the source access node and the destination access node that are identified as healthy, while avoiding paths that have been identified as failed.
    Type: Application
    Filed: March 29, 2021
    Publication date: July 15, 2021
    Inventors: Deepak Goel, Pradeep Sindhu, Ayaskant Pani, Srihari Raju Vegesna, Narendra Jayawant Gathoo, John David Huber, Rohit Sunkam Ramanujam, Saurin Patel
  • Patent number: 11038993
    Abstract: Aspects of this disclosure describes techniques for parsing network packets, processing network packets, and modifying network packets before forwarding the modified network packets over a network. The present disclosure describes a system that, in some examples, parses network packets, generates data describing or specifying attributes of the network packet, identifies operations to be performed when processing a network packet, performs the identified operations, generates data describing or specifying how to modify and/or forward the network packet, modifies the network packet, and outputs the modified packet to another device or system, such as a switch.
    Type: Grant
    Filed: March 13, 2019
    Date of Patent: June 15, 2021
    Assignee: FUNGIBLE, INC.
    Inventors: Deepak Goel, Jean-Marc Frailong, Srihari Raju Vegesna, Stimit Kishor Oak, Rohit Sunkam Ramanujam, John David Huber, Hariharan Lakshminarayanan Thantry, Vikas Minglani, Saurin Patel, Sureshkumar Nedunchezhian
  • Publication number: 20210176347
    Abstract: Network access node virtual fabrics configured dynamically over an underlay network are described. A centralized controller, such as a software-defined networking (SDN) controller, of a packet switched network is configured to establish one or more virtual fabrics as overlay networks on top of the physical underlay network of the packet switched network. For example, the SDN controller may define multiple sets of two of more access nodes connected to the packet switched network, and the access nodes of a given one of the sets may use a new data transmission protocol, referred to generally herein as a fabric control protocol (FCP), to dynamically setup tunnels as a virtual fabric over the packet switched network. The FCP tunnels may include all or a subset of the parallel data paths through the packet switched network between the access nodes for a given virtual fabric.
    Type: Application
    Filed: January 21, 2021
    Publication date: June 10, 2021
    Inventors: Deepak Goel, Narendra Jayawant Gathoo, Philip A. Thomas, Srihari Raju Vegesna, Pradeep Sindhu, Wael Noureddine, Robert William Bowdidge, Ayaskant Pani, Gopesh Goyal
  • Publication number: 20210103408
    Abstract: An apparatus includes an output bus configured to store data, a match table, one or more storage devices, and logic. The match table is configured to store a plurality of entries, each entry including a key value, wherein the match table specifies a matching entry in response to being queried by the query data. The one or more storage devices are configured to store operation information for each of the plurality of entries stored in the match table. The operation information specifies one or more instructions associated with each respective entry in the plurality of entries stored in the match table. The logic is configured to receive one or more operands from the output bus, identify one or more instructions from the one or more storage devices, and generate, based on the one or more instructions and the one or more operands, processed data.
    Type: Application
    Filed: October 2, 2020
    Publication date: April 8, 2021
    Inventors: Hariharan Lakshminarayanan Thantry, Srihari Raju Vegesna, Sureshkumar Nedunchezhian, Stimit Kishor Oak
  • Patent number: 10965586
    Abstract: Techniques for detecting path failures and reducing packet loss as a result of such failures are described for use within a data center or other environment. For example, a source and/or destination access node may create and/or maintain information about health and/or connectivity for a plurality of ports or paths between the source and destination device and core switches. The source access node may spray packets over a number of paths between the source access node and the destination access node. The source access node may use the information about connectivity for the paths between the source or destination access nodes and the core switches to limit the paths over which packets are sprayed. The source access node may spray packets over paths between the source access node and the destination access node that are identified as healthy, while avoiding paths that have been identified as failed.
    Type: Grant
    Filed: September 28, 2018
    Date of Patent: March 30, 2021
    Assignee: Fungible, Inc.
    Inventors: Deepak Goel, Pradeep Sindhu, Ayaskant Pani, Srihari Raju Vegesna, Narendra Jayawant Gathoo, John David Huber, Rohit Sunkam Ramanujam, Saurin Patel
  • Patent number: 10958770
    Abstract: This disclosure describes techniques that include storing, during parsing of a data unit or a network packet, information (i.e., “summary information”) that identifies how the network packet has been process and/or other aspects of the parsing process. In one example, this disclosure describes a method that includes parsing a packet header from a data unit, wherein parsing the packet header includes storing in result vector storage each of a plurality of data items derived from the packet header, the result vector storage having a result vector format defining fields within the result vector storage for storing each of the plurality of data items; storing in template storage, for each of the plurality of data items, summary information about the plurality of data items stored in the result vector storage; and processing, by the packet-processing integrated circuit and based on the summary information and the plurality of data items, the network packet.
    Type: Grant
    Filed: October 15, 2018
    Date of Patent: March 23, 2021
    Assignee: Fungible, Inc.
    Inventors: Hariharan Lakshminarayanan Thantry, Srihari Raju Vegesna, Stimit Kishor Oak, Vikas Minglani, Rohit Sunkam Ramanujam, John David Huber, Deepak Goel
  • Patent number: 10904367
    Abstract: Network access node virtual fabrics configured dynamically over an underlay network are described. A centralized controller, such as a software-defined networking (SDN) controller, of a packet switched network is configured to establish one or more virtual fabrics as overlay networks on top of the physical underlay network of the packet switched network. For example, the SDN controller may define multiple sets of two of more access nodes connected to the packet switched network, and the access nodes of a given one of the sets may use a new data transmission protocol, referred to generally herein as a fabric control protocol (FCP), to dynamically setup tunnels as a virtual fabric over the packet switched network. The FCP tunnels may include all or a subset of the parallel data paths through the packet switched network between the access nodes for a given virtual fabric.
    Type: Grant
    Filed: September 28, 2018
    Date of Patent: January 26, 2021
    Assignee: Fungible, Inc.
    Inventors: Deepak Goel, Narendra Jayawant Gathoo, Phillip A. Thomas, Srihari Raju Vegesna, Pradeep Sindhu, Wael Noureddine, Robert William Bowdidge, Ayaskant Pani, Gopesh Goyal
  • Publication number: 20210021696
    Abstract: This disclosure describes techniques for performing communications between devices using various aspects of Ethernet standards. As further described herein, a protocol is disclosed that may be used for communications between devices, where the communications take place over a physical connection complying with Ethernet standards. Such a protocol may enable reliable and in-order delivery of frames between devices, while following Ethernet physical layer rules, Ethernet symbol encoding, Ethernet lane alignment, and/or Ethernet frame formats.
    Type: Application
    Filed: October 5, 2020
    Publication date: January 21, 2021
    Inventors: Pradeep Sindhu, Deepak Goel, Srihari Raju Vegesna, Aibing Zhou, Shashi Kumar, Rohit Sunkam Ramanujam
  • Patent number: 10798223
    Abstract: This disclosure describes techniques for performing communications between devices using various aspects of Ethernet standards. As further described herein, a protocol is disclosed that may be used for communications between devices, where the communications take place over a physical connection complying with Ethernet standards. Such a protocol may enable reliable and in-order delivery of frames between devices, while following Ethernet physical layer rules, Ethernet symbol encoding, Ethernet lane alignment, and/or Ethernet frame formats.
    Type: Grant
    Filed: March 7, 2019
    Date of Patent: October 6, 2020
    Assignee: Fungible, Inc.
    Inventors: Pradeep Sindhu, Deepak Goel, Srihari Raju Vegesna, Aibing Zhou, Shashi Kumar, Rohit Sunkam Ramanujam
  • Publication number: 20200314026
    Abstract: A network system for a data center is described in which an access node sprays a data flow of packets over a logical tunnel to another access node. In one example, a method comprises establishing, by a plurality of access nodes, a logical tunnel over a plurality of data paths across a switch fabric between a source access node and a destination access node included within the plurality of access nodes, wherein the source access node is coupled to a source network device; and spraying, by the source access node, a data flow of packets over the logical tunnel to the destination access node, wherein the source access node receives the data flow of packets from the source network device, and wherein spraying the data flow of packets includes directing each of the packets within the data flow to a least loaded data path.
    Type: Application
    Filed: June 15, 2020
    Publication date: October 1, 2020
    Inventors: Pradeep Sindhu, Deepak Goel, Jean-Marc Frailong, Srihari Raju Vegesna, Wael Noureddine, Philip A. Thomas, Satish D Deo, Sunil Mekad, Ayaskant Pani