Patents by Inventor Leonard Thomas Tracy

Leonard Thomas Tracy 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: 11516126
    Abstract: Techniques are disclosed for providing high performant packets processing capabilities in a virtualized cloud environment that enhance the scalability and high availability of the packets processing infrastructure. In certain embodiments disclosed herein, the VNICs functionality performed by network virtualization devices (NVDs) is offloaded from the NVDs to a fleet of computers, referred to as VNIC-as-a-Service System (or VNICaaS system). VNICaaS system is configured to provide Virtual Network Interface Cards (VNICs)-related functionality or service for multiple compute instances belonging to multiple tenants or customers of the CSPI. The VNICaaS system is capable of hosting multiple VNICs to process and transmit traffic in a distributed virtualized cloud networks environment. A single VNIC executed by the VNICaaS system can be used to process packets received from multiple compute instances.
    Type: Grant
    Filed: February 12, 2021
    Date of Patent: November 29, 2022
    Assignee: Oracle International Corporation
    Inventors: Leonard Thomas Tracy, Lucas Michael Kreger-Stickles, Andrey Yurovsky, Philip James Ramsey, Shane Baker
  • Publication number: 20220263789
    Abstract: Techniques are disclosed for scaling an IP address in overlay networks without using load balancers. In certain implementations, an overlay IP address can be attached to multiple compute instances via virtual network interface cards (VNICs) associated with the multiple compute instances. Traffic directed to the multi-attached IP address is distributed across the multiple compute instances. In some other implementations, ECMP techniques in overlay networks are used to scale an overlay IP address. In forwarding tables used for routing packets, the IP address being scaled is associated with multiple next hop paths to multiple network virtualization devices (NVDs) associated with the multiple compute instances. When a particular packet directed to the overlay IP address is to be routed, one of the multiple next hop paths is selected for routing the packet. This enables packets directed to the IP address to be distributed across the multiple compute instances.
    Type: Application
    Filed: February 12, 2021
    Publication date: August 18, 2022
    Applicant: Oracle International Corporation
    Inventors: Myron Decker King, Lucas Michael Kreger-Stickles, Jagwinder Singh Brar, Leonard Thomas Tracy
  • Publication number: 20220263754
    Abstract: Techniques for managing the distribution of configuration information that supports the flow of packets in a cloud environment are described. In an example, a virtual network interface card (VNIC) hosted on a network virtualization device NVD receives a first packet from a compute instance associated with the VNIC. The VNIC determines that flow information to send the first packet on a virtual network is unavailable from a memory of the NVD. The VNIC sends, via the NVD, the first packet to a network interface service, where the network interface service maintains configuration information to send packets on the substrate network and is configured to send the first packet on the substrate network based on the configuration information. The NVD receives the flow information from the network interface service, where the flow information is a subset of the configuration information. The NVD stores the flow information in the memory.
    Type: Application
    Filed: April 22, 2021
    Publication date: August 18, 2022
    Applicant: Oracle International Corporation
    Inventors: Leonard Thomas Tracy, Lucas Michael Kreger-Stickles, Jagwinder Singh Brar, Bryce Eugene Bockman
  • Publication number: 20220263793
    Abstract: Techniques for providing, to a resource on a private network of a service provider, access to a resource on a private network of a customer. Service to customer (S2C) resources deployed on a cloud infrastructure to facilitate the access. Whereas IP address ranges may overlap between private networks and/or private IP addresses may be used in one or more of the private networks, the S2C resources enable the data exchange between the private networks. For example, the S2C resources translate between IP addresses such that data within each private network uses IP addresses that can be properly processed by the private network.
    Type: Application
    Filed: June 14, 2021
    Publication date: August 18, 2022
    Applicant: Oracle International Corporation
    Inventors: Shane Baker, Richendra Khanna, Leonard Thomas Tracy, Guanhong Pei
  • Publication number: 20220263713
    Abstract: Techniques for managing the distribution of configuration information that supports the flow of packets in a cloud environment are described. In an example, a virtual network interface card (VNIC) hosted on a network virtualization device NVD receives a first packet from a compute instance associated with the VNIC. The VNIC determines that flow information to send the first packet on a virtual network is unavailable from a memory of the NVD. The VNIC sends, via the NVD, the first packet to a network interface service, where the network interface service maintains configuration information to send packets on the substrate network and is configured to send the first packet on the substrate network based on the configuration information. The NVD receives the flow information from the network interface service, where the flow information is a subset of the configuration information. The NVD stores the flow information in the memory.
    Type: Application
    Filed: April 22, 2021
    Publication date: August 18, 2022
    Applicant: Oracle International Corporation
    Inventors: Leonard Thomas Tracy, Lucas Michael Kreger-Stickles, Jagwinder Singh Brar, Bryce Eugene Bockman
  • Publication number: 20220116310
    Abstract: Techniques are disclosed for providing high performant packets processing capabilities in a virtualized cloud environment that enhance the scalability and high availability of the packets processing infrastructure. In certain embodiments disclosed herein, the VNICs functionality performed by network virtualization devices (NVDs) is offloaded from the NVDs to a fleet of computers, referred to as VNIC-as-a-Service System (or VNICaaS system). VNICaaS system is configured to provide Virtual Network Interface Cards (VNICs)-related functionality or service for multiple compute instances belonging to multiple tenants or customers of the CSPI. The VNICaaS system is capable of hosting multiple VNICs to process and transmit traffic in a distributed virtualized cloud networks environment. A single VNIC executed by the VNICaaS system can be used to process packets received from multiple compute instances.
    Type: Application
    Filed: February 12, 2021
    Publication date: April 14, 2022
    Applicant: Oracle International Corporation
    Inventors: Leonard Thomas Tracy, Raman Kumar Sonkhla, Guanhong Pei
  • Publication number: 20220116323
    Abstract: Techniques are disclosed for providing high performant packets processing capabilities in a virtualized cloud environment that enhance the scalability and high availability of the packets processing infrastructure. In certain embodiments disclosed herein, the VNICs functionality performed by network virtualization devices (NVDs) is offloaded from the NVDs to a fleet of computers, referred to as VNIC-as-a-Service System (or VNICaaS system). VNICaaS system is configured to provide Virtual Network Interface Cards (VNICs)-related functionality or service for multiple compute instances belonging to multiple tenants or customers of the CSPI. The VNICaaS system is capable of hosting multiple VNICs to process and transmit traffic in a distributed virtualized cloud networks environment. A single VNIC executed by the VNICaaS system can be used to process packets received from multiple compute instances.
    Type: Application
    Filed: February 12, 2021
    Publication date: April 14, 2022
    Applicant: Oracle International Corporation
    Inventors: Leonard Thomas Tracy, Lucas Michael Kreger-Stickles, Andrey Yurovsky, Philip James Ramsey, Shane Baker
  • Publication number: 20210377166
    Abstract: Techniques for loop prevention while allowing multipath in a virtual L2 network are described. In an example, a NIC supports the virtual L2 network. The NIC is configured to receive, via a first port of the NIC, an L2 frame that includes a source MAC address and a destination MAC address. Based on a loop prevention rule, the NIC transmits the L2 frame via its ports except the first port. In an additional example, the NIC is further configured to send an L2 frame to a host via the first port of the NIC. The L2 frame can be a BPDU. Upon receiving a BPDU from the host via the first port, the NIC determines that the BPDU is looped back and disables the first port.
    Type: Application
    Filed: March 4, 2021
    Publication date: December 2, 2021
    Applicant: Oracle International Corporation
    Inventors: Jagwinder Singh Brar, Shane Baker, Leonard Thomas Tracy, Steven Chervets, Bryce Eugene Bockman
  • Patent number: 10931530
    Abstract: The following description is directed to managing routing resources of a communication network. In one example, a method can include determining an amount of routing capacity from a network device and toward a routing prefix. An attribute associated with the routing prefix can be modified based on the amount of routing capacity toward the routing prefix. The modified attribute associated with the routing prefix can be announced to a peer of the network device.
    Type: Grant
    Filed: June 26, 2017
    Date of Patent: February 23, 2021
    Assignee: Amazon Technologies, Inc.
    Inventors: Maciej Rzehak, Amit Sahoo, Ryan Shaw, Stepen Callaghan, Alan Michael Judge, Mitchell Bernard Skiba, Leonard Thomas Tracy, Mark Noel Kelly
  • Patent number: 10374956
    Abstract: The following description is directed to managing a hierarchical network including one or more network zones. In one example, a method of managing a hierarchical network includes collecting network state from respective devices of a network zone; using the collected network state to build an aggregated topology of the network zone; and transmitting the aggregated topology of the network zone to a traffic engineering service.
    Type: Grant
    Filed: September 25, 2015
    Date of Patent: August 6, 2019
    Assignee: Amazon Technologies, Inc.
    Inventors: Leonard Thomas Tracy, Stephen Callaghan, Thomas Bradley Scholl, Edward Crabbe, Justin Oliver Pietsch
  • Patent number: 10367676
    Abstract: A first role manager of a distributed service determines that a leadership assignment decision is to be made with respect to a particular node of the service. The first role manager identifies a particular role indicator value from a first subset of a set of role indicator values according to a value selection order of a role assignment policy of the service. The first role manager is not permitted to assign values from a different subset of the first set of role indicator values. The particular role indicator value is transmitted to the particular node, enabling the particular node to fulfill at least a first category of service requirements corresponding to the role of leader node.
    Type: Grant
    Filed: September 28, 2015
    Date of Patent: July 30, 2019
    Assignee: Amazon Technologies, Inc.
    Inventors: Allan Henry Vermeulen, Leonard Thomas Tracy, Tate Andrew Certain
  • Patent number: 10284460
    Abstract: Network packet tracing may be implemented on packet processors or other devices that perform packet processing. As network packets are received, a determination may be made as to whether tracing is enabled for the network packets. For those network packets with tracing enabled, trace information may be generated and the network packets modified to include the trace information such that forwarding decisions for the network packets ignore the trace information. Trace information indicate a packet processor as a location in a route traversed by the network packets and may include ingress and egress timestamps. Forwarding decisions may then be made and the network packets sent according to the forwarding decisions. Tracing may be enabled or disabled by packet processors for individual network packets. Trace information may also be truncated at a packet processor.
    Type: Grant
    Filed: December 28, 2015
    Date of Patent: May 7, 2019
    Assignee: Amazon Technologies, Inc.
    Inventors: Nafea Bshara, Leonard Thomas Tracy, Thomas A. Volpe, Mark Bradley Davis, Mark Noel Kelly, Stephen Callaghan, Justin Oliver Pietsch, Edward Crabbe
  • Patent number: 10181912
    Abstract: Network links are exercised by transmitting network frames across the links at a threshold level of network traffic by filling unutilized bandwidth with test frames. By increasing network traffic across the links, errors are increased and easier to detect. The test frames can be given lower priority than customer traffic so as not to impact the test traffic. The test frames can be designed such that they are dropped upon receipt by another network switch.
    Type: Grant
    Filed: February 26, 2016
    Date of Patent: January 15, 2019
    Assignee: Amazon Technologies, Inc.
    Inventors: Stephen Callaghan, Minsung Kim, Leonard Thomas Tracy
  • Patent number: 10116593
    Abstract: Methods, systems, and devices are described for transmitting and storing routing path information and routing topology information using a single protocol. In particular embodiments, routing path information for an exterior gateway protocol (“EGP”) network such as a border gateway protocol (“BGP”) network is transmitted throughout an interior gateway protocol (“IGP”) network using IGP messages such as open-shortest-path-first (“OSPF”) or intermediate state to intermediates state (“IS-IS”) messages. The IGP networks may transmit and store the BGP information using type length values (TLVs). As a result, network areas running an IGP may maintain BGP information throughout the network area without the overhead of an iBGP mesh and related message-passing.
    Type: Grant
    Filed: September 23, 2016
    Date of Patent: October 30, 2018
    Assignee: Amazon Technologies, Inc.
    Inventors: Frederick David Sinn, Leonard Thomas Tracy, Stephen Callaghan, Colin John Whittaker
  • Patent number: 9819587
    Abstract: Indirect destination determinations for forwarding tunnel network packets may be performed. Tunneling may be initiated for network packets received at a packet processor according to a forwarding route or other prior packet processing stage, such as an access control list stage. A corresponding entry in a tunnel lookup table may be accessed to determine the tunneling to be applied to the network packet, such as Internet Protocol tunneling or Multiprotocol Label Switching tunneling. The corresponding entry may also include a pointer to a next hop address table that stores a next hop address for the tunneled version of the network packet. The tunneled version of the network packet may be forwarded to the next hop address.
    Type: Grant
    Filed: December 28, 2015
    Date of Patent: November 14, 2017
    Assignee: Amazon Technologies, Inc.
    Inventors: Leonard Thomas Tracy, Mark Bradley Davis, Thomas A. Volpe, Kari Ann O'Brien, Nafea Bshara
  • Patent number: 9807645
    Abstract: A method for adjusting capacity in a multi-stage routing network includes monitoring a number of available connections between a router in a first stage of a multi-stage router network and one or more routers in a second stage of the multi-stage router network. Each of the stages of the multi-stage router network may include a plurality of routers. The method may also include detecting that the number of available connections falls below a threshold number. A notification can be sent to one or more routers in a third stage of the multi-stage router network that the router in the first stage is deprioritized. The one or more routers in the third stage can be operated so that communications to the first stage are routed to one or more other routers in the first stage.
    Type: Grant
    Filed: June 24, 2015
    Date of Patent: October 31, 2017
    Assignee: Amazon Technologies, Inc.
    Inventors: Stephen Callaghan, Leonard Thomas Tracy, Mark Noel Kelly, Alan Michael Judge, Justin Oliver Pietsch, Amit Sahoo
  • Patent number: 9699068
    Abstract: Techniques and solutions for distributing routing updates using timing information are described. For example, inter-device messaging protocols can support timing information (e.g., routing protocols be extended to support timing information). The timing information can indicate a time at which the routing update is to be put into effect where the time decreases the further away a given routing device is from the source of the routing update. For example, each routing device can determine a decayed update reference time when the given routing device will put the routing update into effect according to a decay mode. Routing updates can be managed between routing devices that support timing information and routing devices that do not support timing information.
    Type: Grant
    Filed: September 30, 2014
    Date of Patent: July 4, 2017
    Assignee: Amazon Technologies, Inc.
    Inventors: Spencer Giacalone, Alan Michael Judge, Stephen Callaghan, Mark Noel Kelly, Leonard Thomas Tracy, Justin Oliver Pietsch
  • Patent number: 9531642
    Abstract: Techniques and solutions for distributing routing updates using timing information are described. For example, inter-device messaging protocols can support timing information (e.g., routing protocols be extended to support timing information). The timing information can comprise an indication of a time at which the routing update is to be put into effect. Using the timing information, a number of routing devices can put the routing update into effect at the same time (e.g., at an update reference time) according to a synchronous mode. Routing updates can be managed between routing devices that support timing information and routing devices that do not support timing information.
    Type: Grant
    Filed: September 30, 2014
    Date of Patent: December 27, 2016
    Assignee: Amazon Technologies, Inc.
    Inventors: Spencer Giacalone, Alan Michael Judge, Stephen Callaghan, Mark Noel Kelly, Leonard Thomas Tracy, Justin Oliver Pietsch