公开(公告)号：US20180026891A1

公开(公告)日：2018-01-25

申请号：US15711417

申请日：2017-09-21

Applicant: Cisco Technology, Inc.

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

IPC: H04L12/801 ,  H04L12/707

Abstract: In one embodiment, a device in a network receives data regarding traffic volumes of deterministic and non-deterministic traffic along a first path in the network. The device predicts, using the received data, an increase in the traffic volume of the non-deterministic traffic along the first path in the network. The device identifies a period of time associated with the predicted increase in the traffic volume of the non-deterministic traffic along the first path. The device causes the deterministic traffic to be sent along a second path in the network during the identified period of time, to allow the first path to accommodate the predicted increase in the traffic volume of the non-deterministic traffic along the first path.

公开(公告)号：US20180026870A1

公开(公告)日：2018-01-25

申请号：US15216007

申请日：2016-07-21

Applicant: Cisco Technology, Inc.

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

IPC: H04L12/727 ,  H04L12/751 ,  H04L29/06 ,  H04L12/721

CPC classification number: H04L45/121 ,  H04L45/02 ,  H04L45/26 ,  H04L45/302 ,  H04L45/32 ,  H04L45/48 ,  H04L65/4076

Abstract: In one embodiment, a multicast listener device floods a path lookup request to search for a multicast tree, and may then receive path lookup responses from candidate nodes on the multicast tree, where each of the path lookup responses indicates a unicast routing cost from a respective candidate node to the multicast listener device, and where each of the candidate nodes is configured to suppress a path lookup response if a total path latency from a source of the multicast tree to the multicast listener device via that respective candidate node is greater than a maximum allowable path latency. The multicast listener device may then select a particular candidate node as a join point for the multicast tree based on the particular node having a lowest associated unicast routing cost to the multicast listener device from among the candidate nodes, and joins the multicast tree at the selected join point.

公开(公告)号：US09866431B2

公开(公告)日：2018-01-09

申请号：US15611836

申请日：2017-06-02

Applicant: Cisco Technology, Inc.

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

IPC: H04J1/16 ,  H04L12/24

CPC classification number: H04L41/0803 ,  H04L41/04

Abstract: In one embodiment, a scheduling device in a network receives routing metrics regarding a network path between a device controller and a networked device. The scheduling device also receives controller metrics for the device controller. The scheduling device determines time costs associated with the network path and one or more control operations performed by the device controller, based on the routing and controller metrics. The scheduling device generates a communication schedule based on the time costs and instructs the device controller and the networked device to use the communication schedule.

公开(公告)号：US20170353446A1

公开(公告)日：2017-12-07

申请号：US15430617

申请日：2017-02-13

Applicant: Cisco Technology, Inc.

Inventor： Patrick Wetterwald ,  Maik Seewald

IPC: H04L29/06 ,  G06F1/26 ,  H04L29/08

CPC classification number: H04L63/0823 ,  H04L63/0209 ,  H04L67/12 ,  Y04S40/18

Abstract: In one embodiment, a supervisory device for a network of a power substation identifies a plurality of nodes in the network of the power substation. The supervisory device associates each of the nodes with one or more security certificates. A particular security certificate authenticates a particular node to the supervisory device and authorizes the particular node to communicate in the network of the power substation. The supervisory device determines a security perimeter for the nodes in the network. The supervisory device schedules communications among the nodes using the one or more security certificates and based on the determined security perimeter.

公开(公告)号：US09800506B2

公开(公告)日：2017-10-24

申请号：US14336250

申请日：2014-07-21

Applicant: Cisco Technology, Inc.

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

IPC: H04L12/801 ,  H04L12/825 ,  H04W72/04 ,  H04W72/12

CPC classification number: H04L47/127 ,  H04L47/17 ,  H04L47/25 ,  H04W72/0446 ,  H04W72/121 ,  H04W72/1252

Abstract: In one embodiment, a device in a network receives one or more time slot usage reports regarding a use of time slots of a channel hopping schedule by nodes in the network. The device predicts a time slot demand change for a particular node based on the one or more time slot usage reports. The device identifies a time frame associated with the predicted time slot demand change. The device adjusts a time slot assignment for the particular node in the channel hopping schedule based on predicted demand change and the identified time frame associated with the predicted time slot demand change.

公开(公告)号：US20170295071A1

公开(公告)日：2017-10-12

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 ,  H04L29/08 ,  H04L12/46

CPC classification number: H04L41/145 ,  H04L12/4641 ,  H04L41/0893 ,  H04L41/12 ,  H04L67/12

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.

公开(公告)号：US20170111271A1

公开(公告)日：2017-04-20

申请号：US14886352

申请日：2015-10-19

Applicant: Cisco Technology, Inc.

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

IPC: H04L12/721 ,  H04L12/823

CPC classification number: H04L45/70 ,  H04L45/121 ,  H04L47/14 ,  H04L47/32 ,  H04W40/20 ,  H04W40/24 ,  H04W40/38

Abstract: In one embodiment, a device in a network receives packet arrival information for a packet from a neighbor of the device in the network. The packet arrival information indicates a likelihood of the packet being received by a target node that is moving in the network were the packet forwarded by the neighbor to the target node. The device forwards the packet to the target node based on a determination that the device has a higher likelihood of the packet being received by target node were the packet forwarded by the device to the target node than were the packet forwarded by the neighbor to the target node.

公开(公告)号：US09608863B2

公开(公告)日：2017-03-28

申请号：US14516799

申请日：2014-10-17

Applicant: Cisco Technology, Inc.

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

IPC: G06F15/177 ,  H04L12/24 ,  H04L12/26 ,  H04L29/12 ,  H04L12/743

CPC classification number: H04L41/0803 ,  H04L43/10 ,  H04L45/7453 ,  H04L61/2092 ,  H04L61/6059

Abstract: In one embodiment, a method comprises generating, by a network device, a Bloom filter bit vector based on applying Bloom filter parameters to a candidate address autoconfigured by the network device; and selectively repeating, by the network device, the autoconfiguring of the candidate address until the corresponding Bloom filter bit vector includes a bit set at a reserved bit vector position that is reserved for the network device, the reserved bit vector position providing uniqueness of the candidate address within a link layer domain.

公开(公告)号：US09515914B2

公开(公告)日：2016-12-06

申请号：US14038120

申请日：2013-09-26

Applicant: Cisco Technology, Inc.

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

IPC: H04L12/28 ,  H04L12/751 ,  H04L12/717

CPC classification number: H04L45/02 ,  H04L45/42

Abstract: In one embodiment, an agent device discovers a set of path computation elements (PCEs) and corresponding available capabilities and resources, and determines particular capabilities and resources of interest in a particular computer network. Upon building a simplified view of the available capabilities and resources of the set of PCEs based on the particular capabilities and resources of interest, the agent device advertises the simplified view of the available capabilities and resources into the particular computer network.

Abstract translation: 在一个实施例中，代理设备发现一组路径计算元件（PCE）和相应的可用能力和资源，并确定特定计算机网络中感兴趣的特定能力和资源。 在基于感兴趣的特定能力和资源构建PCE集合的可用能力和资源的简化视图后，代理设备将可用能力和资源的简化视图通告给特定的计算机网络。

公开(公告)号：US09413479B2

公开(公告)日：2016-08-09

申请号：US14155474

申请日：2014-01-15

Applicant: Cisco Technology, Inc.

Inventor： Patrick Wetterwald ,  Pascal Thubert ,  Vincent J. Ribiere ,  Jean-Philippe Vasseur

IPC: H04L12/40 ,  H04J3/16 ,  H04W16/02 ,  H04W84/10

CPC classification number: H04J3/16 ,  H04L2012/40208 ,  H04W16/02 ,  H04W84/10 ,  Y02D70/00 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/22

Abstract: In one embodiment, the locations of a plurality of network devices in a low power and lossy network (LLN) are determined along an intelligent wire. One or more neighboring devices for each network device in the plurality are identified based on the locations of the network devices along the intelligent wire. A communication schedule for the network devices is determined that prevents neighboring devices along the intelligent wire from transmitting on the same frequency. The network devices are assigned to communication time slots based on the communication schedule. The network devices are also assigned frequency offsets based on the communication schedule.

Abstract translation: 在一个实施例中，多个网络设备在低功率和有损耗网络（LLN）中的位置沿智能线路确定。 基于网络设备沿着智能电线的位置来识别多个中的每个网络设备的一个或多个相邻设备。 确定网络设备的通信调度，以防止沿着智能线路的相邻设备在相同频率上发送。 根据通信时间表将网络设备分配给通信时隙。 网络设备也根据通信时间表分配频率偏移。