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：US09621581B2

公开(公告)日：2017-04-11

申请号：US13839259

申请日：2013-03-15

Applicant: Cisco Technology, Inc.

Inventor： Pascal Thubert ,  Christophe Benejean ,  Eric Levy-Abegnoli

IPC: H04L29/06 ,  H04L12/935 ,  H04L12/931 ,  H04L12/761 ,  H04L29/12 ,  H04L12/721 ,  H04L12/743

CPC classification number: H04L63/1458 ,  H04L45/16 ,  H04L45/66 ,  H04L45/7457 ,  H04L49/201 ,  H04L49/3009 ,  H04L61/103 ,  H04L63/1416

Abstract: In one embodiment, a switch in a computer network intercepts a packet to a destination target, the packet having a solicited node multicast address of the target as a destination media access control (MAC) address of the packet. As such, the switch may determine whether the solicited node multicast address is a hit or miss within a switch hardware table of the switch, and in response to a hit, re-writes the destination MAC address with a known value of the destination target from the table, and unicasts the packet to the destination target. In one or more additional embodiments, in response to a miss, and in response to a single-switch architecture, the switch drops the packet, while in response to a miss, and in response to a multi-switch architecture, the switch may compute a repository switch for the solicited multicast destination, and unicasts the packet to the computed repository switch.

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：US20170026279A1

公开(公告)日：2017-01-26

申请号：US15284000

申请日：2016-10-03

Applicant: Cisco Technology, Inc.

Inventor： Pascal Thubert ,  Patrice Bellagamba ,  Dirk Anteunis ,  Eric Levy-Abegnoli

IPC: H04L12/703 ,  H04L12/939 ,  H04L12/24 ,  H04L12/705

CPC classification number: H04L45/28 ,  H04L41/0668 ,  H04L45/18 ,  H04L45/48 ,  H04L49/557

Abstract: A network includes routing arcs for routing network traffic to a destination. Each arc comprising nodes connected in sequence by reversible links oriented to direct network traffic to first and second edge nodes through which the network traffic exits the arc. The nodes in the arc detect a first failure. In response, the nodes exchange first management frames to reverse links in the arc so that the network traffic in the arc is directed away from the first failure toward the first edge node of the arc through which the network traffic exits the arc. The nodes detect a second failure in the arc that is spaced apart from the first failure. In response, the nodes exchange second management frames to freeze incoming edges of parent arcs to prevent network traffic in the corresponding parent arc from entering the arc.

Abstract translation: 网络包括用于将网络流量路由到目的地的路由弧。 每个弧包括依次通过可逆链接连接的节点，所述可逆链接被定向以将网络业务定向到第一和第二边缘节点，网络业务通过所述第一和第二边缘节 电弧中的节点检测到第一个故障。 作为响应，节点交换第一管理帧以反转电弧中的链路，使得电弧中的网络业务被引导离开第一故障朝向网络业务离开电弧的弧的第一边缘节点。 节点检测到与第一个故障间隔开的电弧中的第二个故障。 作为响应，节点交换第二管理帧以冻结父弧的进入边，以防止相应的母弧中的网络流量进入弧。

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：US09485136B2

公开(公告)日：2016-11-01

申请号：US14155562

申请日：2014-01-15

Applicant: Cisco Technology, Inc.

Inventor： Pascal Thubert ,  Patrice Bellagamba ,  Dirk Anteunis ,  Eric Levy-Abegnoli

IPC: H04L12/24 ,  H04L12/939 ,  H04L12/703 ,  H04L12/753 ,  H04L12/705

CPC classification number: H04L45/28 ,  H04L41/0668 ,  H04L45/18 ,  H04L45/48 ,  H04L49/557

Abstract: A network includes multiple routing arcs for routing network traffic to a destination. Each arc comprising nodes connected in sequence by reversible links oriented away from a node initially holding a cursor toward one of first and second edge nodes through which the network traffic exits the arc. Each node includes a network device. The nodes in the arc detect a first failure in the arc. Responsive to the detecting the first failure, the nodes exchange first management frames over a data plane within the arc in order to transfer the cursor from the node initially holding the cursor to a first node proximate the first failure and reverse links in the arc as appropriate so that the network traffic in the arc is directed away from the first failure toward the first edge node of the arc through which the network traffic is able to exit the arc.

Abstract translation: 网络包括用于将网络流量路由到目的地的多个路由弧。 每个弧包括通过可逆的链接依次连接的节点，所述可逆链接朝向远离最初保持光标的节点朝向第一和第二边缘节点之一，网络业务通过该节点离开该弧。 每个节点包括网络设备。 弧中的节点检测到弧中的第一个故障。 响应于检测到第一故障，节点通过弧内的数据平面交换第一管理帧，以将光标从最初保持光标的节点传送到靠近第一故障的第一节点，并且适当地在弧中反向链接 使得电弧中的网络流量被引导离开第一故障朝向电弧的第一边缘节点，网络业务通过该第一边缘节点能够离开电弧。

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。

公开(公告)号：US09276844B2

公开(公告)日：2016-03-01

申请号：US14230034

申请日：2014-03-31

Applicant: Cisco Technology, Inc.

Inventor： Pascal Thubert ,  Charles Calvin Byers ,  Douglas Chan

IPC: H04L12/721 ,  H04L29/06 ,  H04B10/27 ,  H04B10/50 ,  H04B10/114 ,  H04B10/116

CPC classification number: H04L45/66 ,  H04B10/1149 ,  H04B10/116 ,  H04B10/27 ,  H04B10/502 ,  H04L69/22

Abstract: In one embodiment, a method comprises receiving, by an apparatus, a Media Access Control (MAC) frame destined for a destination device; dividing, by the apparatus, the MAC frame into frame fragments; coding the frame fragments into encoded cells; and causing, by the apparatus, transmission of selected subsets of the encoded cells, as distinct flows of the encoded cells, by respective optical physical layer transmitter devices reachable by the destination device.

Abstract translation: 在一个实施例中，一种方法包括由设备接收去往目的地设备的媒体接入控制（MAC）帧; 将MAC帧划分成帧分段; 将帧片段编码成编码的细胞; 并且由所述设备通过由所述目的地设备可达的相应光学物理层发射机设备使所编码的小区的所选择的子集作为编码小区的不同流发送。

公开(公告)号：US20160021017A1

公开(公告)日：2016-01-21

申请号：US14334821

申请日：2014-07-18

Applicant: Cisco Technology, Inc.

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

IPC: H04L12/841 ,  H04L12/803

CPC classification number: H04L47/28 ,  H04L47/12 ,  H04L47/125 ,  H04L47/14 ,  H04L47/24

Abstract: In one embodiment, a device determines that a latency between a receive timeslot of a channel hopping schedule of the device and a transmit timeslot of the channel hopping schedule is greater than a latency threshold for a particular traffic flow to be received during the receive timeslot. The device requests an additional transmit timeslot for the channel hopping schedule from a parent node of the device in the network. The device receives an indication of a newly allocated transmit timeslot for the channel hopping schedule from the parent node. The device maps the receive timeslot to one of the transmit timeslots of the channel hopping schedule, wherein the particular traffic flow is to be forwarded to a second device during the mapped transmit timeslot.

Abstract translation: 在一个实施例中，设备确定设备的信道跳频调度的接收时隙与信道跳频调度的发送时隙之间的等待时间大于在接收时隙期间接收的特定业务流的等待时间阈值。 该设备从网络中的设备的父节点请求用于信道跳频调度的附加传输时隙。 设备从父节点接收关于信道跳频调度的新分配的发射时隙的指示。 设备将接收时隙映射到信道跳频调度的发送时隙之一，其中在映射的发送时隙期间将特定业务流转发到第二设备。

公开(公告)号：US20160020979A1

公开(公告)日：2016-01-21

申请号：US14336005

申请日：2014-07-21

Applicant: Cisco Technology, Inc.

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

IPC: H04L12/26

CPC classification number: H04L43/062 ,  H04L41/0803 ,  H04L41/12 ,  H04L43/12 ,  Y04S40/162 ,  Y04S40/164 ,  Y04S40/168

Abstract: In one embodiment, a network node monitors communications between a sender node and an intermediary receiver node during a set of time slots of a channel hopping schedule. The sender node, intermediary receiver node, and a final destination node for the communications may all be located along a primary communication path in the network. The network node stores a copy of one of the communications sent from the sender node to the intermediary receiver node during a particular time slot in the set of time slots. The network node forwards the copy of the communication to a listener node configured to monitor communications between the intermediary receiver node and another node located along the primary communication path. The intermediary receiver node is also configured to monitor communications between the network node and the listener node.

Abstract translation: 在一个实施例中，网络节点在信道跳频调度的一组时隙期间监视发送方节点和中间接收机节点之间的通信。 发送方节点，中间接收方节点和用于通信的最终目的地节点都可以沿着网络中的主要通信路径定位。 网络节点在一组时隙中的特定时隙期间存储从发送者节点发送到中间接收机节点的通信之一的副本。 网络节点将通信的副本转发到被配置为监视中间接收机节点与沿着主通信路径的另一个节点之间的通信的监听节点。 中间接收机节点还被配置为监视网络节点和监听节点之间的通信。