公开(公告)号：US09172613B2

公开(公告)日：2015-10-27

申请号：US13960701

申请日：2013-08-06

Applicant: Cisco Technology, Inc.

Inventor： Jonathan W. Hui ,  Jean-Philippe Vasseur ,  Wei Hong

IPC: H04L12/26 ,  H04L12/24 ,  H04W40/12 ,  H04W40/24 ,  H04L12/751 ,  H04W40/30 ,  H04W88/06

CPC classification number: H04L45/02 ,  H04L41/12 ,  H04L45/121 ,  H04L45/125 ,  H04L45/306 ,  H04L45/48 ,  H04W40/12 ,  H04W40/246 ,  H04W40/30 ,  H04W88/06 ,  Y02D70/00 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/22 ,  Y02D70/34

Abstract: In a multiple interface, low power and lossy network comprising a plurality of nodes, a low transmission power and medium transmission power topology are defined for the network and a channel-hopping schedule is defined for the devices operating in each topology. A sender determines that data is capable of being transmitted via a link on the low transmission power topology. The sender determines the transmission parameters for the transmission of the data over the link on the low transmission power topology and determines a low transmission power channel for transmission of the data. The sender transmits the determined channel and the transmission parameters to the receiver. The sender transmits the data via the determined channel in the low transmission power topology.

Abstract translation: 在包括多个节点的多接口，低功率和有损网络中，针对网络定义了低发射功率和中等传输功率拓扑，并为每个拓扑中运行的设备定义了跳频调度。 发送方确定数据能够通过低传输功率拓扑上的链路传输。 发送方确定通过低传输功率拓扑上的链路传输数据的传输参数，并确定用于传输数据的低传输功率信道。 发送方将确定的信道和传输参数发送到接收机。 发送方通过低传输功率拓扑中的确定信道发送数据。

公开(公告)号：US09166880B2

公开(公告)日：2015-10-20

申请号：US14148249

申请日：2014-01-06

Applicant: Cisco Technology, Inc.

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

IPC: G06F15/177 ,  H04L12/24 ,  H04L29/12 ,  H04W8/26 ,  H04W40/24

CPC classification number: H04L41/0816 ,  H04L29/12254 ,  H04L29/12273 ,  H04L29/12933 ,  H04L41/085 ,  H04L61/2038 ,  H04L61/2053 ,  H04L61/6068 ,  H04W8/26 ,  H04W40/248 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/22 ,  Y04S40/162

Abstract: A node in a Low power and Lossy Network (LLN) is managed by monitoring a routing configuration on a node in a LLN. A triggering parameter that is used to invoke an address change on a child node is tracked and a threshold against which to compare the triggering parameter is accessed. The triggering parameter is compared to the threshold. Based on results of comparing the triggering parameter to the threshold, it is determined that an address change at the child node is appropriate. An address change of a child node appearing in the routing configuration is invoked based on the determination that an address change is appropriate.

Abstract translation: 低功耗和有损网络（LLN）中的节点通过监视LLN中节点上的路由配置进行管理。 跟踪用于调用子节点上的地址更改的触发参数，并访问与之对比的触发参数的阈值。 将触发参数与阈值进行比较。 基于将触发参数与阈值进行比较的结果，确定子节点处的地址变化是适当的。 基于地址改变的确定，调用出现在路由配置中的子节点的地址变化。

公开(公告)号：US09160760B2

公开(公告)日：2015-10-13

申请号：US14164475

申请日：2014-01-27

Applicant: Cisco Technology, Inc.

Inventor： Jean-Philippe Vasseur ,  Javier Cruz Mota ,  Andrea Di Pietro

IPC: G06F17/18 ,  H04L29/06

CPC classification number: H04L63/1425 ,  G06N3/02 ,  G06N3/08 ,  G06N3/084 ,  G06N99/005 ,  H04L41/16 ,  H04L43/0876 ,  H04L45/48 ,  H04L47/127 ,  H04L47/2466 ,  H04L47/41

Abstract: In one embodiment, a training request is sent to a plurality of nodes in a network to cause the nodes to generate statistics regarding unicast and broadcast message reception rates associated with the nodes. The statistics are received from the nodes and a statistical model is generated using the received statistics and is configured to detect a network attack by comparing unicast and broadcast message reception statistics. The statistical model is then provided to the nodes and an indication that a network attack was detected by a particular node is received from the particular node.

Abstract translation: 在一个实施例中，训练请求被发送到网络中的多个节点，以使节点产生关于与节点相关联的单播和广播消息接收速率的统计。 从节点接收统计信息，并使用接收到的统计信息生成统计模型，并配置为通过比较单播和广播消息接收统计信息来检测网络攻击。 然后将统计模型提供给节点，并且从特定节点接收到特定节点检测到网络攻击的指示。

公开(公告)号：US09154407B2

公开(公告)日：2015-10-06

申请号：US14332871

申请日：2014-07-16

Applicant: Cisco Technology, Inc.

Inventor： Jonathan W. Hui ,  Jean-Philippe Vasseur

IPC: H04L12/28 ,  H04L12/707 ,  H04W28/14 ,  H04W40/32 ,  H04W40/36 ,  H04L12/861 ,  H04L12/851

CPC classification number: H04L45/22 ,  H04L47/24 ,  H04L49/90 ,  H04W28/14 ,  H04W40/32 ,  H04W40/36

Abstract: In one embodiment, an ingress device of a first routing domain in a computer network buffers received packets, and in response to receiving a request from a particular node indicating that the particular node has migrated from the first routing domain to a second routing domain, determines how to reach the particular node in the second routing domain, and forwards the buffered received packets to the particular node in the second routing domain, accordingly. In another embodiment, a device in the first routing domain migrates from the first routing domain to a second routing domain, and determines its new IP address. The device may then send a request to the first ingress router to forward buffered packets for the device to the second routing domain at the new IP address, and may thus receive buffered packets forwarded from the first ingress router at the device in the second routing domain.

Abstract translation: 在一个实施例中，计算机网络中的第一路由域的入口设备缓冲所接收的分组，并且响应于从特定节点接收到指示特定节点已经从第一路由域迁移到第二路由域的请求，确定 如何到达第二路由域中的特定节点，并相应地将缓冲的接收分组转发到第二路由域中的特定节点。 在另一个实施例中，第一路由域中的设备从第一路由域迁移到第二路由域，并确定其新的IP地址。 然后，设备可以向第一入口路由器发送请求，以将新设备的缓冲分组转发到新IP地址处的第二路由域，并且因此可以接收在第二路由域中的设备处从第一入口路由器转发的缓冲分组 。

公开(公告)号：US09154370B2

公开(公告)日：2015-10-06

申请号：US13669210

申请日：2012-11-05

Applicant: Cisco Technology, Inc.

Inventor： Jonathan W. Hui ,  Jean-Philippe Vasseur ,  Wei Hong

IPC: H04L12/66 ,  H04L29/14

CPC classification number: H04L45/28 ,  H04L29/14 ,  H04L45/20 ,  H04L45/22 ,  H04L45/34 ,  H04L49/25 ,  H04L61/2592 ,  H04L69/22 ,  H04L2212/00

Abstract: In one embodiment, a device receives a destination unreachable message originated by a particular node along a first source route, the message carrying an encapsulated packet as received by the particular node. In response, the device may determine a failed link along the first source route based on a tunnel header and the particular node. Once determining an alternate source route without the failed link, the device may re-encapsulate and re-transmit the original packet on an alternate source route with a new tunnel header indicating the alternate source route (e.g., and a new hop limit count for the tunnel header and an adjusted hop limit count in the original packet).

Abstract translation: 在一个实施例中，设备从第一源路由接收由特定节点发起的目的地不可达消息，该消息携带由特定节点接收的封装分组。 作为响应，设备可以基于隧道报头和特定节点来确定沿着第一源路由的故障链路。 一旦确定了没有故障链路的替代源路由，设备可以在备用源路由上重新封装并重新发送原始分组，其中新的隧道报头指示替代源路由（例如，并且新的跳数限制计数为 隧道报头和原始分组中的调整跳频限制计数）。

公开(公告)号：US09143456B2

公开(公告)日：2015-09-22

申请号：US14107565

申请日：2013-12-16

Applicant: Cisco Technology, Inc.

Inventor： Shmuel Shaffer ,  Jean-Philippe Vasseur ,  Sandeep J. Shetty

IPC: H04L12/28 ,  H04L12/851 ,  H04L12/54 ,  H04L12/801 ,  H04L12/911 ,  H04L12/913 ,  H04L12/927

CPC classification number: H04L47/2433 ,  H04L47/10 ,  H04L47/17 ,  H04L47/245 ,  H04L47/724 ,  H04L47/805 ,  H04L47/826

Abstract: In one embodiment, a node may determine a trigger for establishing transmission priority on a path through a shared-media communication network for priority traffic to a particular node. As such, the node may generate a path clear message (PCM) that would instruct one or more receiving nodes along the path to suspend transmission for traffic other than the priority traffic for a specified duration, and also to transmit a local non-repeated distributed message to one or more neighbor nodes of each respective receiving node, the local non-repeated distributed message to instruct the neighbor nodes to suspend transmission for the specified duration. After transmitting the PCM along the path to the particular node to establish the transmission priority for the priority traffic along the path through the shared-media network, the priority traffic may be transmitted to the particular node along the path during the transmission priority.

Abstract translation: 在一个实施例中，节点可以确定用于在通过共享媒体通信网络的路径上建立传输优先级的触发，以用于到特定节点的优先流量。 因此，节点可以生成路径清除消息（PCM），其将指示沿着该路径的一个或多个接收节点在指定的持续时间内暂停除优先级业务之外的业务的传输，并且还发送本地非重复分布式 消息到每个相应接收节点的一个或多个邻居节点，该本地非重复分布式消息指示相邻节点在指定持续时间内暂停传输。 在沿着路径发送PCM到特定节点以建立沿着通过共享媒体网络的路径的优先业务的传输优先级的情况下，优先业务可以在传输优先级期间沿着路径发送到特定节点。

公开(公告)号：US09130863B2

公开(公告)日：2015-09-08

申请号：US14311537

申请日：2014-06-23

Applicant: Cisco Technology, Inc.

Inventor： Jean-Philippe Vasseur ,  Jonathan W. Hui ,  Stefano Previdi ,  Shmuel Shaffer

IPC: G06F15/173 ,  H04L12/707 ,  H04L12/715

CPC classification number: H04L45/22 ,  H04L45/64

Abstract: In one embodiment, a particular field area router (FAR), in a local computer network (e.g., a mesh network) having a plurality of FARs, advertises a common subnet prefix assigned to the local computer network into a global computer network. Each of the plurality of FARs of the local computer network is configured to accept any traffic destined to the local computer network, and a tunnel overlay is built among the plurality of FARs. Upon receiving a packet at the particular FAR destined to a particular device in the local computer network, and in response to the particular FAR not having a host route to the particular device, it forwards the packet on the tunnel overlay to another of the plurality of FARs of the local computer network.

Abstract translation: 在一个实施例中，具有多个FAR的本地计算机网络（例如，网状网络）中的特定场区域路由器（FAR）将分配给本地计算机网络的公共子网前缀通告给全局计算机网络。 本地计算机网络的多个FAR中的每一个被配置为接受去往本地计算机网络的任何流量，并且在多个FAR之间建立隧道覆盖。 一旦在特定的FAR上收到一个目的地是本地计算机网络中的特定设备的分组，并且响应于特定的FAR没有到该特定设备的主机路由，它将隧道覆盖上的分组转发到多个 本地计算机网络的FAR。

公开(公告)号：US09128689B2

公开(公告)日：2015-09-08

申请号：US14267205

申请日：2014-05-01

Applicant: Cisco Technology, Inc.

Inventor： Shmuel Shaffer ,  Jean-Philippe Vasseur ,  Sandeep Jay Shetty

IPC: G06F1/26 ,  G01R29/16 ,  G01R29/18 ,  H02J3/26

CPC classification number: G06F1/26 ,  G01R29/16 ,  G01R29/18 ,  H02J3/14 ,  H02J3/26 ,  Y02B70/3225 ,  Y02E40/50 ,  Y04S20/222

Abstract: In one embodiment, a device in a computer network monitors an alternating-current (AC) waveform of an electrical power source at the device, where the power source is part of a polyphase power source system. Once the device determines a particular phase of the polyphase power source system at the device, then the device joins a directed acyclic graph (DAG) specific to the particular phase. In another embodiment, a device detects a time of a zero crossing of the AC waveform, and may then determine a particular phase of the polyphase power source system at the device based on the time of the zero crossing relative to a corresponding location within a frequency hopping superframe of the computer network.

Abstract translation: 在一个实施例中，计算机网络中的设备监视设备处的电源的交流（AC）波形，其中电源是多相电源系统的一部分。 一旦器件确定器件上的多相电源系统的特定相位，器件将连接特定相位的有向非循环图（DAG）。 在另一个实施例中，设备检测AC波形的过零时间，然后可以基于相对于频率内的对应位置的过零点的时间来确定设备处的多相电源系统的特定相位 跳台超级计算机网络。

公开(公告)号：US20150195216A1

公开(公告)日：2015-07-09

申请号：US14164507

申请日：2014-01-27

Applicant: Cisco Technology, Inc.

Inventor： Andrea Di Pietro ,  Jean-Philippe Vasseur ,  Javier Cruz Mota

IPC: H04L12/911 ,  H04L12/24 ,  H04W24/02 ,  H04L29/08 ,  H04W72/08 ,  H04B1/7156

CPC classification number: H04L41/5025 ,  H04L41/12 ,  H04L43/0852 ,  H04L45/02 ,  H04L45/70 ,  H04L47/122 ,  H04L47/365 ,  H04W24/02 ,  H04W24/04 ,  Y04S40/164

Abstract: In one embodiment, statistical information is collected relating to one or both of communication link quality or channel quality in a frequency-hopping network, in which packets are sent according to a frequency-hopping schedule that defines one or more timeslots, each timeslot corresponding to a transmission frequency. Also, a performance metric of a particular transmission frequency corresponding to a scheduled timeslot is predicted based on the collected statistical information. Based on the predicted performance metric, it is determined whether a transmitting node in the frequency-hopping network should transmit a packet during the scheduled timeslot using the particular transmission channel or wait until a subsequent timeslot to transmit the packet using another transmission frequency.

Abstract translation: 在一个实施例中，收集关于跳频网络中的通信链路质量或信道质量中的一个或两个的统计信息，其中根据定义一个或多个时隙的跳频调度发送分组，每个时隙对应于 传输频率。 此外，基于收集的统计信息来预测对应于调度时隙的特定传输频率的性能度量。 基于预测的性能度量，确定跳频网络中的发送节点是否应该在调度时隙期间使用特定传输信道发送分组，或者等待直到后续时隙来使用另一个传输频率来发送分组。

公开(公告)号：US20150195171A1

公开(公告)日：2015-07-09

申请号：US14164781

申请日：2014-01-27

Applicant: Cisco Technology, Inc.

Inventor： Grêgory Mermoud ,  Jean-Philippe Vasseur ,  Sukrit Dasgupta

IPC: H04L12/26 ,  H04W24/10

CPC classification number: H04L43/0864 ,  G06N7/005 ,  G06N99/005 ,  H04L41/142 ,  H04L41/147 ,  H04L41/16 ,  H04L43/10 ,  H04L43/106 ,  H04W24/10

Abstract: In one embodiment, periodic round-trip probes are executed in a network, whereby a packet is transmitted along a particular communication path from a source to a destination and back to the source. Statistical information relating to the round-trip probes is gathered, and a transmission delay of the round-trip probes is calculated based on the gathered statistical information. Also, an end-to-end transmission delay along an arbitrary communication path in the network is estimated based on the calculated transmission delay of the round-trip probes.

Abstract translation: 在一个实施例中，在网络中执行周期性的往返探测器，由此，分组沿着特定的通信路径从源传输到目的地并返回到源。 收集与往返探测有关的统计信息，并根据收集的统计信息计算往返探测器的传输延迟。 此外，基于所计算的往返探测的传输延迟来估计沿着网络中的任意通信路径的端到端传输延迟。