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    ROUTING IN FAT TREE NETWORKS USING NEGATIVE DISAGGREGATION ADVERTISEMENTS
    132.
    发明申请
    ROUTING IN FAT TREE NETWORKS USING NEGATIVE DISAGGREGATION ADVERTISEMENTS 有权

    公开(公告)号：US20220116306A1

    公开(公告)日：2022-04-14

    申请号：US17559640

    申请日：2021-12-22

    Applicant: Cisco Technology, Inc.

    Inventor： Pascal Thubert ,  Eric Levy-Abegnoli ,  Jakob Heitz

    IPC: H04L45/02

    Abstract: A particular fat tree network node stores default routing information indicating that the particular fat tree network node can reach a plurality of parent fat tree network nodes of the particular fat tree network node. The particular fat tree network node obtains, from a first parent fat tree network node of the plurality of parent fat tree network nodes, a negative disaggregation advertisement indicating that the first parent fat tree network node cannot reach a specific destination. The particular fat tree network node determines whether the first parent fat tree network node is the only parent fat tree network node of the plurality of parent fat tree network nodes that cannot reach the specific destination. If so, the particular fat tree network node installs supplemental routing information indicating that every parent fat tree network node except the first parent fat tree network node can reach the specific destination.

    Routing in fat tree networks using negative disaggregation advertisements
    133.
    发明授权
    Routing in fat tree networks using negative disaggregation advertisements 有权

    公开(公告)号：US11271844B2

    公开(公告)日：2022-03-08

    申请号：US16781270

    申请日：2020-02-04

    Applicant: Cisco Technology, Inc.

    Inventor： Pascal Thubert ,  Eric Levy-Abegnoli ,  Jakob Heitz

    IPC: H04L12/751 ,  H04L45/02

    Abstract: A particular fat tree network node stores default routing information indicating that the particular fat tree network node can reach a plurality of parent fat tree network nodes of the particular fat tree network node. The particular fat tree network node obtains, from a first parent fat tree network node of the plurality of parent fat tree network nodes, a negative disaggregation advertisement indicating that the first parent fat tree network node cannot reach a specific destination. The particular fat tree network node determines whether the first parent fat tree network node is the only parent fat tree network node of the plurality of parent fat tree network nodes that cannot reach the specific destination. If so, the particular fat tree network node installs supplemental routing information indicating that every parent fat tree network node except the first parent fat tree network node can reach the specific destination.

    Network security from host and network impersonation
    134.
    发明授权
    Network security from host and network impersonation 有权

    公开(公告)号：US11165748B1

    公开(公告)日：2021-11-02

    申请号：US17069579

    申请日：2020-10-13

    Applicant: Cisco Technology, Inc.

    Inventor： Pascal Thubert ,  Eric Levy-Abegnoli ,  Jonas Zaddach ,  Patrick Wetterwald

    IPC: G06F15/16 ,  H04L29/12 ,  H04L12/751 ,  H04L29/06

    Abstract: Systems and methods may include sending, to a network registrar, an extended duplicate address request (EDAR) message including a first nonce generated by a host computing device, and receiving, from the network registrar, an extended duplicate address confirmation (EDAC) message including a second nonce, the second nonce being signed by the network registrar via a private key of a first public key infrastructure (PM) key pair of the network registrar via a first signature. The method further includes sending a first neighbor advertisement (NA) message to the host computing device including the second nonce. The second nonce and the private key of the network registrar verifies the first signature from the network registrar, the verification of the first signature indicating that the router is not impersonating the network.

    NEGOTIATING MACHINE LEARNING MODEL INPUT FEATURES BASED ON COST IN CONSTRAINED NETWORKS
    136.
    发明申请
    NEGOTIATING MACHINE LEARNING MODEL INPUT FEATURES BASED ON COST IN CONSTRAINED NETWORKS 有权

    公开(公告)号：US20210176146A1

    公开(公告)日：2021-06-10

    申请号：US16709235

    申请日：2019-12-10

    Applicant: Cisco Technology, Inc.

    Inventor： Jean-Philippe Vasseur ,  Pascal Thubert ,  Eric Levy-Abegnoli ,  Patrick Wetterwald

    IPC: H04L12/26 ,  G06N20/00 ,  G06N5/04

    Abstract: In one embodiment, a service receives a feature availability report indicative of which telemetry variables are available at a device in a network and resource costs associated with data features that the device could compute from the telemetry variables. The service selects at least a subset of the data features for input to a machine learning model, based on their associated resource costs and on their respective impacts on one or more performance metrics for the machine learning model. The service trains the machine learning model to evaluate the selected data features. The service sends the trained machine learning model to the device. The device computes the selected data features from the telemetry variables available at the device and uses the computed data features as input to the machine learning model.

    Re-broadcasting a message by a road side unit
    138.
    发明授权
    Re-broadcasting a message by a road side unit 有权

    公开(公告)号：US10735924B2

    公开(公告)日：2020-08-04

    申请号：US16149237

    申请日：2018-10-02

    Applicant: Cisco Technology, Inc.

    Inventor： Pascal Thubert ,  Srinath Gundavelli ,  Patrick Wetterwald ,  Eric Levy-Abegnoli

    IPC: H04W4/40 ,  H04W40/22 ,  H04W12/10 ,  H04W8/00 ,  H04W4/06 ,  H04W80/02 ,  H04W88/18

    Abstract: In one embodiment, a supervisory service receives a registration message broadcast by a first vehicle and captured by a RSU in the network of RSUs. The supervisory service registers the first vehicle by validating a signature of the registration message without registering a media access control (MAC) address of the first vehicle and without causing to send a registration response to the first vehicle. The supervisory service receives a message broadcast by a second vehicle addressed to the first vehicle and captured by at least one RSU in the network of RSUs. The supervisory service selects one or more RSUs in the network of RSUs to re-broadcast the message. The supervisory service controls the one or more RSUs to re-broadcast the message.

    Automated sensor coverage optimization with an actuating walker agent
    139.
    发明授权
    Automated sensor coverage optimization with an actuating walker agent 有权

    公开(公告)号：US10721630B2

    公开(公告)日：2020-07-21

    申请号：US15804064

    申请日：2017-11-06

    Applicant: Cisco Technology, Inc.

    Inventor： Pascal Thubert ,  Jean-Philippe Vasseur ,  Patrick Wetterwald ,  Eric Levy-Abegnoli

    IPC: H04W16/18 ,  G05D1/02 ,  H04Q9/00

    Abstract: In one embodiment, a first actuator in a network of sensors and actuators executes a walker agent configured to adjust an actuation setting of the first actuator. The actuation setting controls an area of coverage of the first actuator when actuated. The executing agent on the first actuator receives one or more sensor measurements from one or more of the sensors that are in communication range of the first actuator. The executing agent also controls, based on the received one or more sensor measurements, the area of coverage of the first actuator by adjusting its actuation setting, in an attempt to optimize coverage of the sensors in the network by the areas of coverage of the actuators. The first actuator unloads the executing walker agent after adjusting the actuation setting of the first actuator and propagates the agent to another one of the actuators in the network for execution.

    DISTRIBUTED NETWORK QUERY USING WALKER AGENTS
    140.
    发明申请
    DISTRIBUTED NETWORK QUERY USING WALKER AGENTS 审中-公开

    公开(公告)号：US20200213179A1

    公开(公告)日：2020-07-02

    申请号：US16814255

    申请日：2020-03-10

    Applicant: Cisco Technology, Inc.

    Inventor： Pascal Thubert ,  Eric Levy-Abegnoli ,  Patrick Wetterwald ,  Jean-Philippe Vasseur

    IPC: H04L12/24 ,  H04L29/08

    Abstract: In one embodiment, a device in a network receives a query walker agent configured to query information from a distributed set of devices in the network based on a query. The device executes the query walker agent to identify the query. The device updates state information of the executing query walker agent using local information from the device and based on the query. The device unloads the executing query walker agent after updating the state information. The device propagates the query walker agent with the updated state information to one or more of the distributed set of devices in the network, when the updated state information does not fully answer the query.

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