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    Transport layer identifying failure cause and mitigation for deterministic transport across multiple deterministic data links
    71.
    发明授权
    Transport layer identifying failure cause and mitigation for deterministic transport across multiple deterministic data links 有权

    公开(公告)号：US10461886B2

    公开(公告)日：2019-10-29

    申请号：US15784401

    申请日：2017-10-16

    Applicant: Cisco Technology, Inc.

    Inventor： Pascal Thubert ,  Eric Michel Levy-Abegnoli ,  Patrick Wetterwald

    IPC: G06F11/00 ,  H04L1/00 ,  H04L12/26 ,  H04L12/24

    Abstract: In one embodiment, a method comprises: detecting, by a transport layer executed by a processor circuit in an apparatus, a request message received via a non-deterministic data link from one of a plurality of deterministic network interface circuits, the request message for a transport layer packet having been stored in a buffer circuit storing a plurality of transport layer packets in the apparatus, the deterministic network interface circuits providing respective deterministic links for deterministic transmission of the transport layer packets in a deterministic data network, the request message specifying a first number identifying any missed transmission opportunities on the corresponding deterministic link; determining, by the transport layer, a cause of failure in one or more of the missed transmission opportunities; and selectively executing, by the transport layer based on determining the cause of failure, a corrective action for preventing an increase in latency of the transport layer packets.

    Mitigating neighbor discovery-based denial of service attacks
    72.
    发明授权
    Mitigating neighbor discovery-based denial of service attacks 有权

    公开(公告)号：US10382397B2

    公开(公告)日：2019-08-13

    申请号：US15654070

    申请日：2017-07-19

    Applicant: Cisco Technology, Inc.

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

    IPC: H04L29/06 ,  H04L29/12 ,  H04L12/743 ,  H04L12/741

    Abstract: In one embodiment, a device in a network determines whether a destination address of a packet received by the device is within a neighbor discovery (ND) cache of the device. The device determines whether the destination address is not in a set of addresses used to generate an address lookup array or possibly in the set of addresses used to generate the address lookup array, in response to determining that the destination address of the packet is not within the ND cache. The device performs address resolution for the destination address of the packet, in response to determining that the destination address of the packet is possibly in the set of addresses used to generate the address lookup array.

    DISTRIBUTED NETWORK QUERY USING WALKER AGENTS
    73.
    发明申请
    DISTRIBUTED NETWORK QUERY USING WALKER AGENTS 审中-公开

    公开(公告)号：US20190013996A1

    公开(公告)日：2019-01-10

    申请号：US15785833

    申请日：2017-10-17

    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.

    INTELLIGENT WALKER AGENTS IN A NETWORK
    74.
    发明申请
    INTELLIGENT WALKER AGENTS IN A NETWORK 审中-公开

    公开(公告)号：US20180367594A1

    公开(公告)日：2018-12-20

    申请号：US15623902

    申请日：2017-06-15

    Applicant: Cisco Technology, Inc.

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

    IPC: H04L29/08 ,  H04L12/721

    Abstract: In one embodiment, a device in a network receives a path computation agent configured to determine a path in the network that satisfies an objective function. The device executes the path computation agent to update state information regarding the network maintained by the path computation agent. The device selects a neighbor of the device in the network to execute the path computation agent based on the updated state information regarding the network. The device instructs the selected neighbor to execute the path computation agent with the updated state information regarding the network. The device unloads the path computation agent from the device after selecting the neighbor of the device to execute the path computation agent.

    Configuring the design of an industrial automation network
    75.
    发明授权
    Configuring the design of an industrial automation network 有权

    公开(公告)号：US10122589B2

    公开(公告)日：2018-11-06

    申请号：US15094230

    申请日：2016-04-08

    Applicant: Cisco Technology, Inc.

    Inventor： Xuechen Yang ,  Rudolph B. Klecka, III ,  Pascal Thubert ,  Patrick Wetterwald ,  Eric Levy-Abegnoli

    IPC: H04L12/24 ,  H04L12/46 ,  H04L29/08

    Abstract: In one embodiment, a device receives a network policy based upon, at least in part, a physical network, and configures a design of an industrial network overlay on the physical network based upon, at least in part, the network policy. The configuring, according to the techniques herein, may generally include: determining a number of virtual local area networks (VLANs) within the industrial network overlay; determining which devices of the physical network are on which VLAN; determining placement of at least one virtual firewall within the industrial network overlay; and determining at least one communication path for the industrial network overlay between at least two devices.

    Leapfrog communications in a TSCH network
    76.
    发明授权
    Leapfrog communications in a TSCH network 有权

    公开(公告)号：US10038608B2

    公开(公告)日：2018-07-31

    申请号：US14336005

    申请日：2014-07-21

    Applicant: Cisco Technology, Inc.

    Inventor： Pascal Thubert ,  Patrick Wetterwald ,  Jean-Philippe Vasseur

    IPC: H04J1/16 ,  H04L12/26 ,  H04L12/24

    CPC classification number: H04L43/062 ,  H04L41/0803 ,  H04L41/12 ,  H04L43/12 ,  Y04S40/162 ,  Y04S40/164 ,  Y04S40/168

    Abstract: In one embodiment, a network node monitors communications between a sender node and an intermediary receiver node during a set of time slots of a channel hopping schedule. The sender node, intermediary receiver node, and a final destination node for the communications may all be located along a primary communication path in the network. The network node stores a copy of one of the communications sent from the sender node to the intermediary receiver node during a particular time slot in the set of time slots. The network node forwards the copy of the communication to a listener node configured to monitor communications between the intermediary receiver node and another node located along the primary communication path. The intermediary receiver node is also configured to monitor communications between the network node and the listener node.

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