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    FAST AND LOSS-FREE LOCAL RECOVERY BY A RPL PARENT DEVICE
    51.
    发明申请
    FAST AND LOSS-FREE LOCAL RECOVERY BY A RPL PARENT DEVICE 审中-公开

    公开(公告)号：US20200053006A1

    公开(公告)日：2020-02-13

    申请号：US16657179

    申请日：2019-10-18

    Applicant: Cisco Technology, Inc.

    Inventor： PASCAL THUBERT ,  PATRICK WETTERWALD

    IPC: H04L12/753 ,  H04L12/751 ,  H04L12/705 ,  H04L12/24

    Abstract: In one embodiment, a network device (e.g., a RPL router) executes fast local RPL recovery in a low power and lossy network (LLN). The network device, in response to becoming an orphan in a directed acyclic graph (DAG) topology, can utilize the data plane to maintain at least some data traffic by randomly forwarding the data traffic to identified neighbor devices, while eliminating children from the list of forwarders and by finding successors that can be used for re-parenting. Hence, when a RPL network device having lost its last feasible parent can avoid data loss and accelerate a re-parenting process using local repair in the data plane instead of the control plane of the routing protocol used to establish the DAG topology.

    FAST AND LOSS-FREE LOCAL RECOVERY BY A RPL PARENT DEVICE
    52.
    发明申请
    FAST AND LOSS-FREE LOCAL RECOVERY BY A RPL PARENT DEVICE 审中-公开

    公开(公告)号：US20190081892A1

    公开(公告)日：2019-03-14

    申请号：US15922177

    申请日：2018-03-15

    Applicant: Cisco Technology, Inc.

    Inventor： PASCAL THUBERT ,  PATRICK WETTERWALD

    IPC: H04L12/753 ,  H04L12/751 ,  H04L12/24 ,  H04L12/705

    Abstract: In one embodiment, a network device (e.g., a RPL router) executes fast local RPL recovery in a low power and lossy network (LLN). The network device, in response to becoming an orphan in a directed acyclic graph (DAG) topology, can utilize the data plane to maintain at least some data traffic by randomly forwarding the data traffic to identified neighbor devices, while eliminating children from the list of forwarders and by finding successors that can be used for re-parenting. Hence, when a RPL network device having lost its last feasible parent can avoid data loss and accelerate a re-parenting process using local repair in the data plane instead of the control plane of the routing protocol used to establish the DAG topology.

    CLASS-AWARE LOAD BALANCING USING DATA-PLANE PROTOCOL IN A LOOP-FREE MULTIPLE EDGE NETWORK TOPOLOGY
    56.
    发明申请
    CLASS-AWARE LOAD BALANCING USING DATA-PLANE PROTOCOL IN A LOOP-FREE MULTIPLE EDGE NETWORK TOPOLOGY 有权
    在无循环多边形网络拓扑中使用数据平面协议的等级负载平衡

    公开(公告)号：US20170006497A1

    公开(公告)日：2017-01-05

    申请号：US14754922

    申请日：2015-06-30

    Applicant: Cisco Technology, Inc.

    Inventor： PASCAL THUBERT ,  DIRK ANTEUNIS ,  PATRICE BELLAGAMBA ,  DAVID DELANO WARD

    IPC: H04W28/08 ,  H04L12/743 ,  H04L12/801 ,  H04L12/751

    CPC classification number: H04L47/11 ,  H04L47/125

    Abstract: In one embodiment, a method comprises detecting a traffic condition by a network device in a loop-free routing topology comprising routing arcs for reaching a destination device, each routing arc comprising a first edge, a second edge, and at least a third network device configured for routing any network traffic along the routing arc toward the destination device and exiting via any one of the first or second edges of the routing arc, the traffic condition proximate to the first edge of at least one of the routing arcs in which the network device is positioned; and the network device initiating load balancing based on sending a management frame over a data plane of the at least one routing arc toward the corresponding second edge, the management frame requesting a change in load balancing for at least one of an identified traffic class based on the detected traffic condition.

    Abstract translation: 在一个实施例中，一种方法包括在无环路由拓扑中检测网络设备的业务状况，包括用于到达目的地设备的路由弧，每个路由弧包括第一边缘，第二边缘和至少第三网络设备 被配置为沿着所述路由电弧将任何网络业务路由到所述目的地设备并且经由所述路由选择电弧的所述第一或第二边缘中的任一个路线退出，所述交通状况接近所述路由弧中的至少一个路由弧的所述第一边缘， 设备定位; 并且所述网络设备基于通过所述至少一个路由选择电弧的数据平面向对应的第二边缘发送管理帧来发起负载平衡，所述管理帧请求基于所识别的业务类别中的至少一个的负载均衡 检测到的交通状况。

    ENDPOINT DEVICE IDENTIFICATION BASED ON DETERMINED NETWORK BEHAVIOR
    57.
    发明申请
    ENDPOINT DEVICE IDENTIFICATION BASED ON DETERMINED NETWORK BEHAVIOR 有权
    基于确定的网络行为的终端设备识别

    公开(公告)号：US20160344693A1

    公开(公告)日：2016-11-24

    申请号：US14716927

    申请日：2015-05-20

    Applicant: Cisco Technology, Inc.

    Inventor： PATRICK WETTERWALD ,  ERIC MICHEL LEVY-ABEGNOLI ,  PASCAL THUBERT

    IPC: H04L29/12

    CPC classification number: H04L61/103 ,  H04L61/6022

    Abstract: In one embodiment, a method comprises detecting, by a network device, an endpoint device attempting to access a data network via a data link; and generating, by the network device, a unique device signature for identifying the endpoint device based on the network device identifying a sequence of link layer data packets transmitted by the endpoint device upon connection to the data link, the unique device signature identifying a behavior of the endpoint device independent of any link layer address used by the endpoint device.

    Abstract translation: 在一个实施例中，一种方法包括由网络设备检测经由数据链路尝试访问数据网络的端点设备; 以及由所述网络设备生成用于基于所述网络设备识别所述端点设备的唯一设备签名，所述网络设备标识由所述端点设备在连接到所述数据链路时发送的链路层数据分组的序列，所述唯一设备签名识别 端点设备独立于端点设备使用的任何链路层地址。

    RECURSIVE LOAD BALANCING IN A LOOP-FREE ROUTING TOPOLOGY USING ROUTING ARCS
    58.
    发明申请
    RECURSIVE LOAD BALANCING IN A LOOP-FREE ROUTING TOPOLOGY USING ROUTING ARCS 审中-公开
    使用路由ARCS的无循环路由拓扑中的平衡负载平衡

    公开(公告)号：US20150036507A1

    公开(公告)日：2015-02-05

    申请号：US14518555

    申请日：2014-10-20

    Applicant: Cisco Technology, Inc.

    Inventor： PASCAL THUBERT ,  DIRK ANTEUNIS ,  ERIC MICHEL LEVY-ABEGNOLI ,  PATRICE BELLAGAMBA

    IPC: H04L12/803 ,  H04L12/705 ,  H04L12/707

    CPC classification number: H04L47/125 ,  H04L41/0663 ,  H04L45/02 ,  H04L45/18 ,  H04L45/22

    Abstract: In one embodiment, a method comprises creating, in a computing network, a loop-free routing topology comprising a plurality of routing arcs for reaching a destination device, each routing arc comprising a first network device as a first end of the routing arc, a second network device as a second end of the routing arc, and at least a third network device configured for routing any network traffic along the routing arc toward the destination device via any one of the first or second ends of the routing arc; and load balancing the network traffic along the routing arcs based on traffic metrics obtained at the first and second ends of the routing arcs, including selectively sending a backpressure command to a first one of the routing arcs supplying at least a portion of the network traffic to a congested one of the routing arcs.

    Abstract translation: 在一个实施例中，一种方法包括在计算网络中创建包括用于到达目的地设备的多个路由弧的无环路由拓扑，每个路由弧包括作为路由电弧的第一端的第一网络设备， 第二网络设备作为路由电弧的第二端，以及至少第三网络设备，被配置为经由所述路由电弧的所述第一或第二端中的任何一个沿着所述路由电弧将任何网络业务路由到目的地设备; 以及基于在所述路由弧的第一和第二端处获得的流量度量来沿着所述路由弧负载平衡网络流量，包括选择性地向所述路由弧中的所述路由弧中的第一个提供所述网络业务的至少一部分， 拥塞的一个路由弧。

    INTER-PAN OPTIMIZATION BY CONTROLLER DEVICE REDIRECTING TARGET NETWORK DEVICES TO ATTACH TO SELECTED PARENT DEVICES
    59.
    发明公开
    INTER-PAN OPTIMIZATION BY CONTROLLER DEVICE REDIRECTING TARGET NETWORK DEVICES TO ATTACH TO SELECTED PARENT DEVICES 审中-公开

    公开(公告)号：US20230379782A1

    公开(公告)日：2023-11-23

    申请号：US17747649

    申请日：2022-05-18

    Applicant: Cisco Technology, Inc.

    Inventor： PASCAL THUBERT ,  HUIMIN SHE ,  LI ZHAO

    IPC: H04W36/22 ,  H04W60/06 ,  H04W28/08

    CPC classification number: H04W36/22 ,  H04W60/06 ,  H04W28/0804

    Abstract: In one embodiment, a method comprises: determining, by a controller device, load attributes for respective wireless network devices in a data network comprising at least a first wireless data network rooted by a first root network device, each wireless network device attached to at least an identified parent network device; identifying, by the controller device based on at least a subset of the load attributes, that at least one targeted device among the wireless network devices needs to migrate to a different parent network device in the data network; and causing, by the controller device, the targeted device to detach from its identified parent network device and attach to the different parent network device based on generating and outputting an individual attachment directive destined for the targeted device.

    PERIMETER FORMATION AND MOBILE DEVICE DETECTION IN A RPL NETWORK
    60.
    发明公开
    PERIMETER FORMATION AND MOBILE DEVICE DETECTION IN A RPL NETWORK 审中-公开

    公开(公告)号：US20230319683A1

    公开(公告)日：2023-10-05

    申请号：US17712381

    申请日：2022-04-04

    Applicant: Cisco Technology, Inc.

    Inventor： PASCAL THUBERT ,  LELE ZHANG ,  HUIMIN SHE ,  LI ZHAO

    IPC: H04W40/24

    CPC classification number: H04W40/246

    Abstract: In one embodiment, a method comprises: creating, by a root network device in a wireless data network, a perimeter topology comprising a first distance vector-protocol path of a first group of perimeter devices and a second distance vector-protocol path of a second group of the perimeter devices, the creating comprising outputting first and second advertisement messages causing the perimeter devices to attach to only one parent of only one of the first or second distance vector-protocol paths and a junction device to attach at respective ends of the first and second distance vector-protocol paths; and causing the junction device to forward, from the first distance vector-protocol path, a data packet toward the root network device via the second distance vector-protocol path.

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