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    Localized multicast in a low power and lossy network based on rank-based distance
    21.
    发明授权
    Localized multicast in a low power and lossy network based on rank-based distance 有权

    公开(公告)号：US11431518B2

    公开(公告)日：2022-08-30

    申请号：US16789862

    申请日：2020-02-13

    Applicant: Cisco Technology, Inc.

    Inventor： Pascal Thubert ,  Huimin She ,  Chuanwei Li ,  Lele Zhang

    IPC: H04L12/18 ,  H04L12/46 ,  H04L45/00 ,  H04L1/08

    Abstract: In one embodiment, a method comprises: identifying, by a low power and lossy network (LLN) device in a low power and lossy network, a minimum distance value and a distance limit value for limiting multicast propagation, initiated at the LLN device, of a multicast data message in the LLN; and multicast transmitting, by the LLN device, the multicast data message with a current distance field specifying the minimum distance value and a distance limit field specifying the distance limit value, the multicast transmitting causing a receiving LLN device having a corresponding rank in the LLN to respond to the multicast data message by: (1) determining an updated distance based on adding to the current distance field a rank difference between the receiving LLN device and the LLN device, and (2) selectively retransmitting the multicast data message if the updated distance is less than the distance limit value.

    Location-aware routing for east-west data traffic
    22.
    发明授权
    Location-aware routing for east-west data traffic 有权

    公开(公告)号：US11362937B2

    公开(公告)日：2022-06-14

    申请号：US16825171

    申请日：2020-03-20

    Applicant: Cisco Technology, Inc.

    Inventor： Huimin She ,  Lele Zhang ,  Shiwei Gao ,  Xiaoguang Jason Chen ,  Chuanwei Li

    IPC: G06F15/173 ,  H04L45/00 ,  H04L41/0816 ,  H04L45/02

    Abstract: Techniques for utilizing Software-Defined Field-Area Network (SD-FAN) controllers to receive a geographic location and transmission power of individual nodes and generate a geographic location topology of a Field-Area Network (FAN) to provide nodes with location-aware route paths for data transmission. One or more SD-FAN controller(s) may maintain a geographic location database to store the geographic location and transmission power of the individual nodes. Each node may utilize a Destination Address Object to advertise its geographic location and transmission power to the SD-FAN controller. The SD-FAN controller(s) may utilize the geographic location table to generate the geographic location topology of the FAN and determine a location-aware route path for optimized data transmission between nodes in the FAN.

    LOAD BALANCING OF THROUGHPUT FOR MULTI-PHY NETWORKS USING DECISION TREES
    24.
    发明申请
    LOAD BALANCING OF THROUGHPUT FOR MULTI-PHY NETWORKS USING DECISION TREES 有权

    公开(公告)号：US20210029038A1

    公开(公告)日：2021-01-28

    申请号：US16518130

    申请日：2019-07-22

    Applicant: Cisco Technology, Inc.

    Inventor： Lele Zhang ,  Chuanwei Li ,  Li Zhao ,  Yajun Xia

    IPC: H04L12/803 ,  H04L12/24 ,  H04L12/753 ,  H04L12/721 ,  H04L12/26 ,  G06N20/00

    Abstract: In one embodiment, a technique for load balancing of throughput for multi-PHY networks using decision trees is provided. A first device of a mesh communication network may collect at least one transmission metric indicative of a primary link and a secondary link between the first device and a second device of the mesh communication network. The first device may provide the at least one transmission metric as input to one or more decision trees comprising one or more attributes that are each indicative of a threshold for a corresponding transmission metric. The first device may obtain an output from the decision tree comprising a selection of either the primary link or the secondary link. The first device may send, based on the output from the decision tree, one or more packets to the second device using the selected link.

    Fast reformation in a directed acyclic graph based on deferred contention to higher devices
    25.
    发明授权
    Fast reformation in a directed acyclic graph based on deferred contention to higher devices 有权

    公开(公告)号：US10419293B1

    公开(公告)日：2019-09-17

    申请号：US16004245

    申请日：2018-06-08

    Applicant: Cisco Technology, Inc.

    Inventor： Huimin She ,  Jianzhou Chen ,  Chuanwei Li ,  Pascal Thubert

    IPC: H04L12/24 ,  H04L12/759 ,  H04L12/753

    Abstract: A network device stores in its nonvolatile memory, in response to detecting a power outage in a tree-based network, an identifier for a preferred parent and a distance identifier for the network device within the network. In response to power restoration, the network device starts a trickle timer based on the ring identifier, for determining whether a beacon request from a transmitting node and destined for the preferred parent is detected during the waiting interval. In response to the network device detecting the beacon request during the waiting interval, the network device sets its channel hopping schedule to the corresponding channel hopping schedule of the transmitting node in response to determining the beacon request is destined for the preferred parent, enabling rejoining with the preferred parent in response to detecting a beacon from the preferred parent to the transmitting node via the corresponding channel hopping schedule of the transmitting node.

    Localized multicast in a low power and lossy network based on rank-based distance
    26.
    发明授权
    Localized multicast in a low power and lossy network based on rank-based distance 有权

    公开(公告)号：US11909545B2

    公开(公告)日：2024-02-20

    申请号：US17866768

    申请日：2022-07-18

    Applicant: Cisco Technology, Inc.

    Inventor： Pascal Thubert ,  Huimin She ,  Chuanwei Li ,  Lele Zhang

    IPC: H04L12/18 ,  H04L12/46 ,  H04L45/00 ,  H04L1/08

    CPC classification number: H04L12/1845 ,  H04L1/08 ,  H04L12/189 ,  H04L12/4633 ,  H04L45/32

    Abstract: In one embodiment, a method comprises: identifying, by a low power and lossy network (LLN) device in a low power and lossy network, a minimum distance value and a distance limit value for limiting multicast propagation, initiated at the LLN device, of a multicast data message in the LLN; and multicast transmitting, by the LLN device, the multicast data message with a current distance field specifying the minimum distance value and a distance limit field specifying the distance limit value, the multicast transmitting causing a receiving LLN device having a corresponding rank in the LLN to respond to the multicast data message by: (1) determining an updated distance based on adding to the current distance field a rank difference between the receiving LLN device and the LLN device, and (2) selectively retransmitting the multicast data message if the updated distance is less than the distance limit value.

    Cloud-based deployment service in low-power and lossy network
    27.
    发明授权
    Cloud-based deployment service in low-power and lossy network 有权

    公开(公告)号：US11653220B2

    公开(公告)日：2023-05-16

    申请号：US16375778

    申请日：2019-04-04

    Applicant: Cisco Technology, Inc.

    Inventor： Li Zhao ,  Chuanwei Li ,  Lele Zhang ,  Huimin She

    IPC: H04W16/18 ,  H04W4/02 ,  G06F30/20 ,  H04W84/18

    CPC classification number: H04W16/18 ,  G06F30/20 ,  H04W4/025 ,  H04W84/18

    Abstract: Systems, methods, and computer-readable media for identifying a deployment scheme for forming a wireless mesh network based on environmental characteristics and an optimum deployment scheme. In some examples, a geographical area for deployment of a wireless mesh network is identified. Additionally, environmental information of the geographical area can be collected. Network characteristics of an optimum deployment scheme for forming the wireless mesh network can be defined. As follows, a deployment scheme for forming the wireless mesh network can be identified based on the network characteristics of the optimum deployment scheme and the environmental information of the geographical area.

    SASE Based Method of Preventing Exhausting Attack in Wireless Mesh Networks
    28.
    发明申请
    SASE Based Method of Preventing Exhausting Attack in Wireless Mesh Networks 有权

    公开(公告)号：US20230139002A1

    公开(公告)日：2023-05-04

    申请号：US17515014

    申请日：2021-10-29

    Applicant: Cisco Technology, Inc.

    Inventor： Lele Zhang ,  Li Zhao ,  Chuanwei Li ,  Feiliang Wang

    IPC: H04L29/06 ,  H04L12/751 ,  H04L12/733 ,  G06K9/62 ,  G06N20/00

    Abstract: The present disclosure provides a hierarchical method of identifying unauthorized network traffic in a network by applying, at one of a first plurality of nodes of a network, a first level of network traffic analysis to identify received network traffic as one of authorized or suspicious network traffic, the one of the first plurality of nodes having a first path for traffic routing and a second path to one of a second plurality of nodes of the network, the second path being used for forwarding the suspicious network traffic to the one of the second plurality of nodes; tagging the received network traffic as the suspicious network traffic; and sending the suspicious network traffic to the one of the second plurality of nodes over the second path, the second network node applying a second level of network analysis to determine if the received network traffic is authorized, unauthorized or remains suspicious.

    MALICIOUS BLACK HOLE NODE DETECTION AND CIRCUMVENTION
    30.
    发明申请
    MALICIOUS BLACK HOLE NODE DETECTION AND CIRCUMVENTION 有权

    公开(公告)号：US20220070672A1

    公开(公告)日：2022-03-03

    申请号：US17011792

    申请日：2020-09-03

    Applicant: Cisco Technology, Inc.

    Inventor： Lele Zhang ,  Yajun Xia ,  Chuanwei Li ,  Li Zhao

    IPC: H04W12/12 ,  H04W4/70 ,  G16Y30/10 ,  H04W24/08 ,  H04W64/00 ,  H04L29/06

    Abstract: A method includes identifying a potentially malicious node using a rating assigned to nodes within the network and decrementing the rating based on detected dropped messages to identify a potentially malicious node. The malicious node is identified based on location information obtained from the nodes within the network and comparable distances from the potentially malicious node. The method further includes ending communications with the malicious node and selecting a new parent node based on a presumption that any of the plurality of nodes other than the malicious node are non-malicious.

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