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51. 发明授权

US09276833B2 Path-ping and ECMP-traceroute for IPv6 overlay virtualized networks 有权
标题翻译： IPv6覆盖虚拟化网络的路径和ECMP跟踪路由
公开(公告)号：US09276833B2
公开(公告)日：2016-03-01
申请号：US13949538
申请日：2013-07-24
申请人： Cisco Technology, Inc.
发明人： Carlos M. Pignataro , Nagendra Kumar
IPC分类号： H04L12/26
CPC分类号： H04L43/10 , H04L1/14 , H04L41/0866 , H04L45/24 , H04L45/64
摘要： In one embodiment, an ingress network virtualization edge (NVE) in a computer network generates an echo packet, and sets an indication in the echo packet that the echo packet is for overlay path validation. In addition, the ingress NVE sets a message type of the echo packet to a generic echo request, and includes virtualization network (VN) context information within the echo packet. Once setting a destination address of the echo packet as an egress NVE address and including an indication to the egress NVE that the echo packet is an operations, administration, and management (OAM) message, the ingress NVE may then send the echo packet toward the egress NVE (e.g., to validate the VN context information and/or to reveal multipath traces).
摘要翻译：在一个实施例中，计算机网络中的入口网络虚拟化边缘（NVE）生成回波分组，并且在回波分组中设置回波分组用于覆盖路径验证的指示。另外，入口NVE将回波分组的消息类型设置为通用回显请求，并且在回波分组内包括虚拟化网络（VN）上下文信息。一旦将回波分组的目的地址设置为出口NVE地址，并且向出口NVE指示回波分组是操作，管理和管理（OAM）消息的指示，则入口NVE然后可以将回波分组发送到出口NVE（例如，验证VN上下文信息和/或显示多径轨迹）。

52. 发明授权

US09253088B2 Breaking loops in overlay networks using an IP transport header 有权
标题翻译：使用IP传输标头在覆盖网络中断开环路
公开(公告)号：US09253088B2
公开(公告)日：2016-02-02
申请号：US13930614
申请日：2013-06-28
申请人： Cisco Technology, Inc.
发明人： Jesper Skriver , Isidoros Kouvelas , Christian Cassar
IPC分类号： H04L12/28 , H04L12/741 , H04L12/733
CPC分类号： H04L45/74 , H04L45/20
摘要： In one embodiment, a device receives a payload encapsulated in an Internet Protocol (IP) transport header having a time-to-live (TTL) value, and decapsulates the payload while maintaining the TTL value. In response to determining that a destination of the payload is not attached to the device, the device may then re-encapsulate the payload in a new IP transport header with a new TTL value that is less than the maintained TTL value, and transmits the re-encapsulated payload toward the destination. In this manner, loops in overlay networks may be prevented based on eventual expiration of the TTL value of the IP transport header, accordingly.
摘要翻译：在一个实施例中，设备接收封装在具有生存时间（TTL）值的因特网协议（IP）传输报头中的有效载荷，并且在保持TTL值的同时解封装有效载荷。响应于确定有效载荷的目的地未附加到设备，则设备然后可以将新的有效载荷重新封装在具有小于所保持的TTL值的新TTL值的新IP传输报头中，并且将该重传 - 封装的有效载荷到目的地。以这种方式，可以相应地基于IP传输报头的TTL值的最终到期来防止覆盖网络中的环路。

53. 发明授权

US09246845B2 Overlaying receive schedules for energy-constrained devices in channel-hopping networks 有权
标题翻译：在跳频网络中覆盖能量约束设备的接收时间表
公开(公告)号：US09246845B2
公开(公告)日：2016-01-26
申请号：US13921680
申请日：2013-06-19
申请人： Cisco Technology, Inc.
发明人： Jonathan W. Hui , Wei Hong , Jean-Philippe Vasseur
IPC分类号： H04W4/00 , H04L12/43 , H04L12/911 , H04B1/713 , H04W72/12 , H04B1/7156 , H04W84/18 , H04L29/08 , H04W72/04
CPC分类号： H04W72/1263 , H04B1/713 , H04B1/7156 , H04L47/826 , H04L67/12 , H04L67/325 , H04W4/70 , H04W72/0446 , H04W84/18
摘要： In one embodiment, a time at which a first device in a frequency-hopping communication network is expected to transmit a data message is determined. A first schedule is then generated based on the determined time, and the first schedule is overlaid on a frequency-hopping schedule for a second device in the network. The first schedule defines a first timeslot during which the second device listens for the data message, while the frequency-hopping schedule defines second timeslots during which the second device listens for data messages from other devices in the network. Notably, a duration of the first timeslot is greater than respective durations of the second timeslots.
摘要翻译：在一个实施例中，确定跳频通信网络中的第一设备期望发送数据消息的时间。然后基于所确定的时间生成第一调度，并且第一调度被叠加在网络中的第二设备的跳频调度上。第一调度定义了第二设备在其中侦听数据消息的第一时隙，而跳频调度定义了第二时隙，在第二时隙期间，第二设备监听来自网络中的其他设备的数据消息。值得注意的是，第一时隙的持续时间大于第二时隙的相应持续时间。

54. 发明授权

US09231850B2 Keepalive mechanism to maintain links in a lossy environment 有权
标题翻译：保持机制在有损环境中保持联系
公开(公告)号：US09231850B2
公开(公告)日：2016-01-05
申请号：US13400819
申请日：2012-02-21
申请人： Navneet Agarwal , Jean-Philippe Vasseur
发明人： Navneet Agarwal , Jean-Philippe Vasseur
IPC分类号： G06F15/16 , H04L12/751 , H04W40/12 , H04L12/721
CPC分类号： H04L45/026 , H04L45/70 , H04W40/12
摘要： In one embodiment, a particular device determines a selected link from the particular device toward a root device in a computer network, wherein traffic destined away from the root device via the particular device utilizes the selected link in reverse. By monitoring a link quality of the selected link in reverse based on received traffic over the selected link, the particular device may determine whether the link quality is below a lower threshold. In response to the link quality being below the lower threshold, the particular device activates use of keepalive messages from the particular device over the selected link.
摘要翻译：在一个实施例中，特定设备确定从特定设备到计算机网络中的根设备的选定链路，其中通过特定设备远离根设备的业务相反地使用所选择的链路。通过基于所选择的链路上的接收到的业务来反向监视所选择的链路的链路质量，特定设备可以确定链路质量是否低于较低的阈值。响应于链路质量低于较低阈值，特定设备激活在所选链路上使用来自特定设备的保持活动消息。

55. 发明授权

US09198203B2 System and method for routing critical communications 有权
标题翻译：关键通信路由系统和方法
公开(公告)号：US09198203B2
公开(公告)日：2015-11-24
申请号：US12942972
申请日：2010-11-09
申请人： Shmuel Shaffer , Jean-Philippe Vasseur , Sandeep Jay Shetty
发明人： Shmuel Shaffer , Jean-Philippe Vasseur , Sandeep Jay Shetty
IPC分类号： G06F15/16 , H04W76/00 , H04L29/06 , H04L12/701 , H04L12/707 , H04W4/00 , H04W84/18
CPC分类号： H04W76/007 , H04L29/06 , H04L45/00 , H04L45/24 , H04W4/38 , H04W40/22 , H04W40/28 , H04W76/50 , H04W84/18 , Y02D70/142 , Y02D70/144 , Y02D70/22
摘要： According to one or more implementations of the disclosure, packets may be transmitted in a low power and lossy network (LLN) by receiving, on a first node, a message from a sending node, and by activating a critical message configuration to be applied in routing the message. A message identifier (e.g., signature) for the message may also be received or gleaned. The message identifier can be compared at the first node to a list of stored message identifiers, created based on routing history, to determine if the message has already been received. As such, if the message has not been received at the first node previously, a first parent and a second parent for the message are identified and the message, along with the critical message indication, can be transmitted to the first parent and the second parent, thereby achieving redundancy in the routing of the message.
摘要翻译：根据本公开的一个或多个实现方式，分组可以通过在第一节点上从发送节点接收消息并且通过激活要应用的关键消息配置来在低功率和有损网络（LLN）中发送路由消息。消息的消息标识符（例如，签名）也可以被接收或收集。可以将消息标识符在第一节点处与基于路由历史创建的存储消息标识符列表进行比较，以确定消息是否已经被接收。因此，如果先前还没有在第一个节点处接收到消息，则识别该消息的第一个父节点和第二个父节点，并将该消息连同关键消息指示一起发送到第一个父节点和第二个父节点从而在消息的路由中实现冗余。

56. 发明授权

US09197508B2 Time-based scheduling for tunnels computed by a stateful path computation element 有权
标题翻译：由状态路径计算元素计算的隧道的基于时间的调度
公开(公告)号：US09197508B2
公开(公告)日：2015-11-24
申请号：US13524751
申请日：2012-06-15
申请人： Jean-Philippe Vasseur , Stefano Previdi , Clarence Filsfils , George Swallow
发明人： Jean-Philippe Vasseur , Stefano Previdi , Clarence Filsfils , George Swallow
IPC分类号： H04L12/24 , H04L12/26 , H04L12/911
CPC分类号： H04L41/0896 , H04L41/147 , H04L47/823 , H04L47/825 , H04L47/826
摘要： In one embodiment, a path computation element (PCE) in a computer network receives one or more path computation requests (PCReqs), and records a time of each PCReq and the corresponding requested bandwidth. Based on this information, the PCE may determine a traffic profile of the computer network, and may augment a traffic engineering database (TED) with requested bandwidth according to time based on the traffic profile. As such, prior to a particular time, the PCE may determine placement of tunnels within the traffic profile for the particular time.
摘要翻译：在一个实施例中，计算机网络中的路径计算元件（PCE）接收一个或多个路径计算请求（PCReq），并记录每个PCReq的时间和相应的请求带宽。基于该信息，PCE可以确定计算机网络的流量简档，并且可以基于流量简档来根据时间来增加具有所请求带宽的流量工程数据库（TED）。因此，在特定时间之前，PCE可以在特定时间内确定隧道在业务简档内的布置。

57. 发明授权

US09182972B2 Method and system for minimizing disruption during in-service software upgrade 有权
标题翻译：在使用软件升级过程中尽量减少中断的方法和系统
公开(公告)号：US09182972B2
公开(公告)日：2015-11-10
申请号：US13751372
申请日：2013-01-28
申请人： Cisco Technology, Inc.
发明人： Peter J. Hanselmann
IPC分类号： H04L12/54 , H04L12/771 , G06F9/445 , H04L12/707 , H04L12/703 , H04L12/773 , H04L29/08 , H04L29/14
CPC分类号： G06F8/65 , G06F8/656 , H04L45/22 , H04L45/28 , H04L45/60 , H04L67/34 , H04L69/40
摘要： A method and a system for in-service software upgrade in a Hot Standby Redundant Distributed (HSRD) system are provided. A standby route processor in HSRD system is updated with upgraded software. The standby route processor is synchronized with an active route processor present in the HSRD system. The control of routing process is switched over to the standby route processor (with the upgraded software) from the active route processor. During the switchover, a minimal context forwarder on the line card begins execution and continues forwarding packets across a network, while a line card in the HSRD system is being reloaded and configured.
摘要翻译：提供了一种在热备份冗余分布式（HSRD）系统中进行在线软件升级的方法和系统。升级后的软件更新HSRD系统中的待机路由处理器。备用路由处理器与存在于HSRD系统中的活动路由处理器同步。路由处理的控制从主动路由处理器切换到备用路由处理器（具有升级的软件）。在切换期间，线卡上的最小上下文转发器开始执行，并继续通过网络转发数据包，同时重新加载和配置HSRD系统中的线路卡。

58. 发明授权

US09166880B2 Dynamic address assignment for address aggregation in low power and lossy networks 有权
标题翻译：低功耗和有损网络中地址聚合的动态地址分配
公开(公告)号：US09166880B2
公开(公告)日：2015-10-20
申请号：US14148249
申请日：2014-01-06
申请人： Cisco Technology, Inc.
发明人： Shmuel Shaffer , Pascal Thubert , Patrick Wetterwald , Jean-Philippe Vasseur
IPC分类号： G06F15/177 , H04L12/24 , H04L29/12 , H04W8/26 , H04W40/24
CPC分类号： 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
摘要： 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.
摘要翻译：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。

59. 发明授权

US09160760B2 Anomaly detection in a computer network 有权
标题翻译：计算机网络中异常检测
公开(公告)号：US09160760B2
公开(公告)日：2015-10-13
申请号：US14164475
申请日：2014-01-27
申请人： Cisco Technology, Inc.
发明人： Jean-Philippe Vasseur , Javier Cruz Mota , Andrea Di Pietro
IPC分类号： G06F17/18 , H04L29/06
CPC分类号： H04L63/1425 , G06N3/02 , G06N3/08 , G06N3/084 , G06N99/005 , H04L41/16 , H04L43/0876 , H04L45/48 , H04L47/127 , H04L47/2466 , H04L47/41
摘要： 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.
摘要翻译：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。

60. 发明授权

US09154407B2 Maintained message delivery during routing domain migration 有权
标题翻译：在路由域迁移期间维护邮件传递
公开(公告)号：US09154407B2
公开(公告)日：2015-10-06
申请号：US14332871
申请日：2014-07-16
申请人： Cisco Technology, Inc.
发明人： Jonathan W. Hui , Jean-Philippe Vasseur
IPC分类号： H04L12/28 , H04L12/707 , H04W28/14 , H04W40/32 , H04W40/36 , H04L12/861 , H04L12/851
CPC分类号： H04L45/22 , H04L47/24 , H04L49/90 , H04W28/14 , H04W40/32 , H04W40/36
摘要： 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.
摘要翻译：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。

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