公开(公告)号：US20140223155A1

公开(公告)日：2014-08-07

申请号：US13926447

申请日：2013-06-25

Applicant: Cisco Technology, Inc.

Inventor： Jean-Philippe Vasseur ,  Grégory Mermoud ,  Sukrit Dasgupta ,  Jonathan W. Hui

IPC: G06F9/44

CPC classification number: G06F9/4405

Abstract: In one embodiment, a triggered reboot of a field area router (FAR) of a computer network is initiated, and gathered states of the FAR are saved. The nodes in the computer network are informed of the triggered reboot, and then feedback may be collected from the nodes in response to the triggered reboot. As such, it can be determined whether to complete the triggered reboot based on the feedback, and the FAR is rebooted in response to determining to complete the triggered reboot. In another embodiment, a node receives information about the initiated triggered reboot of the FAR, and determines whether it has critical traffic. If not, the node buffers non-critical traffic and indicates positive feedback in response to the triggered reboot, but if so, then the node continues to process the critical traffic and indicates negative feedback in response to the triggered reboot.

Abstract translation: 在一个实施例中，启动计算机网络的场区域路由器（FAR）的触发重新启动，并且保存FAR的收集状态。 计算机网络中的节点被通知触发的重新引导，然后可以响应于触发的重新启动从节点收集反馈。 因此，可以基于反馈来确定是否完成触发的重新启动，并且响应于确定完成触发的重新启动而重新启动FAR。 在另一个实施例中，节点接收关于FAR的启动的触发重启的信息，并且确定它是否具有关键业务。 如果没有，节点将缓存非关键流量，并响应触发的重新启动来指示正反馈，但如果是，则节点继续处理关键流量，并响应于触发的重新启动来指示负反馈。

公开(公告)号：US20140126610A1

公开(公告)日：2014-05-08

申请号：US13669243

申请日：2012-11-05

Applicant: CISCO TECHNOLOGY, INC.

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

IPC: H04B1/7156

CPC classification number: H04B1/7156 ,  H04W56/001

Abstract: In one embodiment, a device determines a need to resynchronize a broadcast and unicast frequency-hopping schedules on its network interface. In response to the need, the device may solicit the broadcast schedule from one or more neighbor devices having the synchronized broadcast schedule, and then establishes the unicast schedule for the network interface using communication during the synchronized broadcast schedule.

Abstract translation: 在一个实施例中，设备确定需要在其网络接口上重新同步广播和单播跳频计划。 响应于需要，设备可以从具有同步广播调度的一个或多个相邻设备征求广播调度，然后在同步的广播调度中使用通信建立网络接口的单播调度。

公开(公告)号：US20140126423A1

公开(公告)日：2014-05-08

申请号：US13668904

申请日：2012-11-05

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Jean-Philippe Vasseur ,  Jonathan W. Hui

IPC: H04L12/28

CPC classification number: H04L45/48 ,  H04L45/02 ,  H04W40/24 ,  H04W84/18

Abstract: In one embodiment, a device determines a set of sources and used destinations for traffic in a computer network, where nodes of the network are configured to send all traffic to the used destinations through a root node of the computer network according to a directed acyclic graph (DAG). The device may then also determine a set of capable nodes as common ancestors to source-destination pairs that provide a more optimal path between the source-destination pairs than traversing the root node, and instructs the set of capable nodes to store downward routes to forward traffic for one or more of the used destinations according to the stored downward route rather than through the root node.

Abstract translation: 在一个实施例中，设备确定计算机网络中的通信量的一组源和所使用的目的地，其中网络的节点被配置为根据有向非循环图通过计算机网络的根节点向所使用的目的地发送所有业务 （DAG）。 然后，设备还可以确定一组能力节点作为源 - 目的地对的共同祖先，其在源 - 目的地对之间提供比遍历根节点更优选的路径，并且指示该组能力节点存储向下的路由以向前 根据存储的向下路由而不是通过根节点的一个或多个所使用的目的地的流量。

公开(公告)号：US20140105211A1

公开(公告)日：2014-04-17

申请号：US13652887

申请日：2012-10-16

Applicant: CISCO TECHNOLOGY, INC.

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

IPC: H04L12/56

CPC classification number: H04L45/02 ,  H04L45/20 ,  H04L45/72 ,  H04L45/74 ,  H04L2212/00

Abstract: In one embodiment, the techniques herein provide that a node may receive a packet from a neighboring node in a low power and lossy network (LLN). The node may then extract, from the packet, a link-layer source address from a link layer header and an internet protocol (IP) source address from an IP header. The node may then determine whether the neighboring node originated the packet and, based on that determination, the node may correlate the link-layer source address with the IP source address to provide neighbor discovery.

Abstract translation: 在一个实施例中，这里的技术提供节点可以在低功率和有损网络（LLN）中从相邻节点接收分组。 然后，节点可以从分组中提取来自IP报头的链路层报头和因特网协议（IP）源地址的链路层源地址。 节点然后可以确定相邻节点是否发起分组，并且基于该确定，节点可以将链路层源地址与IP源地址相关联，以提供邻居发现。

公开(公告)号：US20140092769A1

公开(公告)日：2014-04-03

申请号：US14099251

申请日：2013-12-06

Applicant: Cisco Technology, Inc.

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

IPC: H04L12/721 ,  H04L12/26 ,  H04L12/707

CPC classification number: H04L45/70 ,  H04L12/1854 ,  H04L12/1877 ,  H04L43/08 ,  H04L45/16 ,  H04L45/22 ,  H04L45/24 ,  H04L45/302

Abstract: In one embodiment, a quality of one or more links of a particular node in a communication network may be determined, and then whether the quality of the one or more links is below a threshold may also be determined. In response to determining that the quality of at least one of the one or more links is above the threshold, a select one of the at least one of the one or more links with quality above the threshold may be utilized for communication with the particular node. Conversely, in response to determining that the quality of each of the one or more links is below the threshold, multi-path forwarding over a plurality of links of the particular node may be utilized for communication with the particular node.

Abstract translation: 在一个实施例中，可以确定通信网络中的特定节点的一个或多个链路的质量，然后也可以确定一个或多个链路的质量是否低于阈值。 响应于确定一个或多个链路中的至少一个链路的质量高于阈值，可以利用具有高于阈值的质量的一个或多个链路中的至少一个链路中的一个选择之一用于与特定节点的通信 。 相反，响应于确定一个或多个链路中的每一个的质量低于阈值，可以利用特定节点的多个链路上的多路径转发来与特定节点进行通信。

公开(公告)号：US20140092753A1

公开(公告)日：2014-04-03

申请号：US13630909

申请日：2012-09-28

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Jean-Philippe Vasseur ,  Sukrit Dasgupta ,  Jonathan W. Hui

IPC: H04L12/26

CPC classification number: H04L43/0876 ,  H04L41/5009 ,  H04L43/106 ,  H04L45/14 ,  H04L45/48

Abstract: In one embodiment, one or more monitoring nodes may monitor network traffic within a computer network, and dynamically identify one or more paths within the network that specifically require performance monitoring based on one or more traffic criteria triggered by the monitoring. The one or more paths may each include one or more path nodes. The one or more monitoring nodes may then request that the one or more path nodes initiate transmission of performance indicia, which may allow the one or more monitoring nodes to monitor the performance of the one or more paths based on the performance indicia received at the one or more monitoring nodes.

Abstract translation: 在一个实施例中，一个或多个监视节点可以监视计算机网络内的网络流量，并且基于由监视触发的一个或多个流量准则来动态地识别网络内特定需要性能监视的一个或多个路径。 一个或多个路径可以各自包括一个或多个路径节点。 一个或多个监视节点可以然后请求一个或多个路径节点发起性能标记的传输，这可以允许一个或多个监视节点基于在一个接收到的性能标记来监视一个或多个路径的性能 或更多的监控节点。

公开(公告)号：US20140092752A1

公开(公告)日：2014-04-03

申请号：US13631452

申请日：2012-09-28

Applicant: Cisco Technology, Inc.

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

IPC: H04L12/26 ,  H04B1/713

CPC classification number: H04L12/18 ,  H04B1/713 ,  H04L12/1895 ,  H04L67/32 ,  H04W4/06

Abstract: In one embodiment, a node may discover the density of neighboring nodes in a frequency-hopping communication network. In response to identifying a power outage condition, the node may also dynamically determine an initial power outage notification (PON) transmission protocol based on the density of neighboring nodes. The node may then communicate a first PON to a plurality of neighboring nodes according to the initial PON transmission protocol.

Abstract translation: 在一个实施例中，节点可以在跳频通信网络中发现相邻节点的密度。 响应于识别停电状况，节点还可以基于相邻节点的密度动态地确定初始断电通知（PON）传输协议。 然后，节点可以根据初始PON传输协议将第一PON传送到多个相邻节点。

公开(公告)号：US20140064172A1

公开(公告)日：2014-03-06

申请号：US14067274

申请日：2013-11-20

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Jonathan W. Hui ,  Lik Chuen Alec Woo ,  Wei Hong

IPC: H04W52/02 ,  H04W56/00

CPC classification number: H04W52/0209 ,  H04B1/7156 ,  H04W56/00

Abstract: In one embodiment, a battery-operated communication device “quick-samples” a frequency hopping sequence at a periodic rate corresponding to a substantially low duty cycle, and is discovered by (e.g., attached to) a main-powered communication device. During a scheduled sample, the main-powered communication device transmits a control packet to be received by the battery-operated communication device, the control packet containing timing information and transmitted to account for worst-case clock drift error between the two devices. The battery-operated communication device responds to the control packet with a link-layer acknowledgment containing timing information from the battery-operated communication device. Accordingly, the two devices may re-synchronize their timing based on the timing information in the control packet and acknowledgment, respectively.

Abstract translation: 在一个实施例中，电池供电的通信设备以对应于基本上较低占空比的周期性速率“跳频”跳频序列，并且通过（例如附接到）主供电通信设备来发现。 在预定采样期间，主供电通信设备发送由电池供电的通信设备接收的控制分组，该控制分组包含定时信息，并且被传送以考虑两个设备之间的最坏情况时钟漂移误差。 电池供电的通信设备用包含来自电池供电通信设备的定时信息的链路层确认来响应控制分组。 因此，两个设备可以分别基于控制分组和确认中的定时信息重新同步其定时。

公开(公告)号：US10454834B2

公开(公告)日：2019-10-22

申请号：US15438032

申请日：2017-02-21

Applicant: Cisco Technology, Inc.

Inventor： Jean-Philippe Vasseur ,  Jonathan W. Hui

IPC: H04L12/26 ,  H04L12/815 ,  H04L12/813 ,  H04L12/24 ,  H04L12/707 ,  H04L12/703 ,  H04L12/851 ,  H04L12/801 ,  H04W40/10

Abstract: In one embodiment, a device in a network detects a power outage event. The device monitors one or more operational properties of the device, in response to detecting the power outage event. The device determines whether to initiate a traffic control mechanism based on the one or more monitored operational properties of the device, according to a power outage traffic control policy. The device causes one or more nodes in the network that send traffic to the device to regulate the traffic sent to the device, in response to a determination that the traffic control mechanism should be initiated.

公开(公告)号：US20180302312A1

公开(公告)日：2018-10-18

申请号：US16018529

申请日：2018-06-26

Applicant: Cisco Technology, Inc.

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

IPC: H04L12/26 ,  H04W40/00 ,  H04W4/06 ,  H04B1/00 ,  H04W84/18

CPC classification number: H04L43/16 ,  H04B1/00 ,  H04W4/06 ,  H04W40/00 ,  H04W84/18 ,  Y02D70/00 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/22

Abstract: In one embodiment, asynchronous broadcast communication is performed based on time-based events in channel-hopping networks. The embodiments include determining a plurality of channels in a channel-hopping network, on which a plurality of nodes communicate, and identifying an asynchronous broadcast message to transmit from a particular node. A plurality of time-based events is determined, and in response to each time-based event, the asynchronous broadcast message is transmitted on a single selected channel of the plurality of channels per time-based event.