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1. 发明申请

US20130227336A1 EFFICIENT LINK REPAIR MECHANISM TRIGGERED BY DATA TRAFFIC 有权
标题翻译：有效的链接维修机制由数据传输触发
公开(公告)号：US20130227336A1
公开(公告)日：2013-08-29
申请号：US13406771
申请日：2012-02-28
申请人： Navneet Agarwal , Jean-Philippe Vasseur
发明人： Navneet Agarwal , Jean-Philippe Vasseur
IPC分类号： G06F11/07
CPC分类号： H04L45/28 , H04L41/0677 , H04L43/0811 , H04L45/02 , H04L45/14 , H04L45/22
摘要： In one embodiment, an intermediate device transmits a data message away from a root device toward a receiver device in a computer network, the data message transmitted by utilizing, in reverse, a link that had been previously selected by the receiver device toward the root device. In response to detecting that the data message did not reach the receiver device, a discovery message is may be sent to one or more neighbor devices, wherein the discovery message carries an identification (ID) of the receiver device and a discovery scope indicating how many hops the discovery message is allowed to traverse to reach the receiver device, and wherein the receiver device, upon receiving the discovery message, triggers a local link repair of the link from the receiver device toward the root device.
摘要翻译：在一个实施例中，中间设备将数据消息从根设备发送到计算机网络中的接收机设备，数据消息通过相反地利用先前由接收机设备选择的链路朝向根设备。响应于检测到数据消息没有到达接收机设备，发现消息可以被发送到一个或多个相邻设备，其中发现消息携带接收机设备的标识（ID）和指示多少跳过发现消息被允许遍历以到达接收机设备，并且其中接收机设备在接收到发现消息时触发从接收机设备朝向根设备的链路的本地链路修复。

2. 发明授权

US08392541B2 Distributed control technique for RPL topology 有权
标题翻译： RPL拓扑分布式控制技术
公开(公告)号：US08392541B2
公开(公告)日：2013-03-05
申请号：US13117276
申请日：2011-05-27
申请人： Navneet Agarwal , Jean-Philippe Vasseur
发明人： Navneet Agarwal , Jean-Philippe Vasseur
IPC分类号： G06F15/16
CPC分类号： H04W40/246 , H04L45/14 , H04W40/32
摘要： In one embodiment, a distributed control technique may enable management of a monolithic routing topology of nodes in a computer network by apportioning the monolithic routing topology into a plurality of regional routing topology domains, each represented by a directed acyclic graph (DAG). The regional topology domains may include a super topology domain that is established as a super-DAG of intermediate nodes interconnected with leaf nodes and rooted by a master node of the computer network. The regional topology domains may further include at least one local topology domain that is established as a local-DAG of intermediate nodes interconnected with leaf nodes and rooted by a local root node of the computer network. Notably, a super node of the computer network may be configured to participate in both the super topology domain as an intermediate node of the super-DAG and the local topology domain as the local root node of the local-DAG.
摘要翻译：在一个实施例中，分布式控制技术可以通过将单片路由拓扑分配到多个区域路由拓扑域（每个由有向无环图（DAG）表示）来实现对计算机网络中节点的单片路由拓扑的管理。区域拓扑域可以包括被建立为与叶节点互连并且由计算机网络的主节点根植的中间节点的超级DAG的超拓扑域。区域拓扑结构域还可以包括至少一个本地拓扑域，其被建立为与叶节点互连并由计算机网络的本地根节点根植的中间节点的本地DAG。值得注意的是，计算机网络的超级节点可以被配置为作为本地DAG的本地根节点参与超级拓扑域作为超级DAG和本地拓扑域的中间节点。

3. 发明授权

US09172636B2 Efficient link repair mechanism triggered by data traffic 有权
标题翻译：由数据流量触发的高效链路修复机制
公开(公告)号：US09172636B2
公开(公告)日：2015-10-27
申请号：US13406771
申请日：2012-02-28
申请人： Navneet Agarwal , Jean-Philippe Vasseur
发明人： Navneet Agarwal , Jean-Philippe Vasseur
IPC分类号： H04L12/703 , H04L12/26 , H04L12/24 , H04L12/751 , H04L12/721 , H04L12/707
CPC分类号： H04L45/28 , H04L41/0677 , H04L43/0811 , H04L45/02 , H04L45/14 , H04L45/22
摘要： In one embodiment, an intermediate device transmits a data message away from a root device toward a receiver device in a computer network, the data message transmitted by utilizing, in reverse, a link that had been previously selected by the receiver device toward the root device. In response to detecting that the data message did not reach the receiver device, a discovery message is may be sent to one or more neighbor devices, wherein the discovery message carries an identification (ID) of the receiver device and a discovery scope indicating how many hops the discovery message is allowed to traverse to reach the receiver device, and wherein the receiver device, upon receiving the discovery message, triggers a local link repair of the link from the receiver device toward the root device.
摘要翻译：在一个实施例中，中间设备将数据消息从根设备发送到计算机网络中的接收机设备，数据消息通过相反地利用先前由接收机设备选择的链路朝向根设备。响应于检测到数据消息没有到达接收机设备，发现消息可以被发送到一个或多个相邻设备，其中发现消息携带接收机设备的标识（ID）和指示多少跳过发现消息被允许遍历以到达接收机设备，并且其中接收机设备在接收到发现消息时触发从接收机设备朝向根设备的链路的本地链路修复。

4. 发明申请

US20130219045A1 KEEPALIVE MECHANISM TO MAINTAIN LINKS IN A LOSSY ENVIRONMENT 有权
标题翻译：保持机密，维护环境中的链接
公开(公告)号：US20130219045A1
公开(公告)日：2013-08-22
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： G06F15/173
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。

5. 发明授权

US08489765B2 Dynamic directed acyclic graph (DAG) adjustment 有权
标题翻译：动态有向无环图（DAG）调整
公开(公告)号：US08489765B2
公开(公告)日：2013-07-16
申请号：US12790060
申请日：2010-05-28
申请人： Jean-Philippe Vasseur , Navneet Agarwal , Pascal Thubert , Patrick Wetterwald
发明人： Jean-Philippe Vasseur , Navneet Agarwal , Pascal Thubert , Patrick Wetterwald
IPC分类号： G06F15/16 , G06F12/00
CPC分类号： H04L45/124 , H04L45/48
摘要： In one embodiment, a root device may request that one or more devices of a computer network build a directed acyclic graph (DAG) for routing traffic within the computer network based on an objective function (OF), where the OF has one or more metrics to optimize the DAG against and optionally certain constraints. Particular devices that receive the request may then build the DAG based on the OF, and may determine and report OF feedback to the root device. Upon receiving the reports regarding OF feedback, the root device may then adjust the OF based on the feedback, and request a rebuild of the DAG from the devices based on the adjusted OF.
摘要翻译：在一个实施例中，根设备可以请求计算机网络的一个或多个设备基于目标函数（OF）构建用于在计算机网络内路由业务的有向非循环图（DAG），其中OF具有一个或多个度量以优化DAG和任选的某些约束。接收请求的特定设备然后可以基于OF构建DAG，并且可以确定并向根设备报告反馈。在接收到关于OF反馈的报告之后，根设备可以基于反馈来调整OF，并且基于经调整的OF请求从设备重建DAG。

6. 发明申请

US20110231573A1 DYNAMIC DIRECTED ACYCLIC GRAPH (DAG) ADJUSTMENT 有权
标题翻译：动态方向指示图（DAG）调整
公开(公告)号：US20110231573A1
公开(公告)日：2011-09-22
申请号：US12790060
申请日：2010-05-28
申请人： Jean-Philippe Vasseur , Navneet Agarwal , Pascal Thubert , Patrick Wetterwald
发明人： Jean-Philippe Vasseur , Navneet Agarwal , Pascal Thubert , Patrick Wetterwald
IPC分类号： G06F15/173
CPC分类号： H04L45/124 , H04L45/48
摘要： In one embodiment, a root device may request that one or more devices of a computer network build a directed acyclic graph (DAG) for routing traffic within the computer network based on an objective function (OF), where the OF has one or more metrics to optimize the DAG against and optionally certain constraints. Particular devices that receive the request may then build the DAG based on the OF, and may determine and report OF feedback to the root device. Upon receiving the reports regarding OF feedback, the root device may then adjust the OF based on the feedback, and request a rebuild of the DAG from the devices based on the adjusted OF.
摘要翻译：在一个实施例中，根设备可以请求计算机网络的一个或多个设备基于目标函数（OF）构建用于在计算机网络内路由业务的有向非循环图（DAG），其中OF具有一个或多个度量以优化DAG和任选的某些约束。接收请求的特定设备然后可以基于OF构建DAG，并且可以确定并向根设备报告反馈。在接收到关于OF反馈的报告之后，根设备可以基于反馈来调整OF，并且基于经调整的OF请求从设备重建DAG。

7. 发明授权

US09106555B2 Troubleshooting routing topology based on a reference topology 有权
标题翻译：基于参考拓扑来排除路由拓扑
公开(公告)号：US09106555B2
公开(公告)日：2015-08-11
申请号：US13358217
申请日：2012-01-25
申请人： Navneet Agarwal , Jean-Philippe Vasseur , Ajay Kumar
发明人： Navneet Agarwal , Jean-Philippe Vasseur , Ajay Kumar
IPC分类号： G06F11/28 , H04L12/24
CPC分类号： H04L41/12 , H04L41/0873
摘要： In one embodiment, a computing device (e.g., border router or network management server) transmits a discovery message into a computer network, such as in response to a given trigger. In response to the discovery message, the device receives a unicast reply from each node of a plurality of nodes in the computer network, each reply having a neighbor list of a corresponding node and a selected parent node for the corresponding node. Based on the neighbor lists from the replies and a routing protocol shared by each of the plurality of nodes in the computer network, the device may create a reference topology for the computer network, and based on the selected parent nodes from the replies, may also determine a current topology of the computer network. Accordingly, the device may then compare the current topology to the reference topology to detect anomalies in the current topology.
摘要翻译：在一个实施例中，计算设备（例如，边界路由器或网络管理服务器）将发现消息发送到计算机网络中，例如响应于给定的触发。响应于发现消息，设备从计算机网络中的多个节点的每个节点接收单播应答，每个应答具有对应节点的相邻列表和对应节点的所选父节点。基于来自所述答复的所述邻居列表和所述计算机网络中的所述多个节点中的每一个共享的路由协议，所述设备可以为所述计算机网络创建参考拓扑，并且基于来自所述答复的所选择的父节点，还可以确定计算机网络的当前拓扑。因此，设备然后可以将当前拓扑与参考拓扑进行比较，以检测当前拓扑中的异常。

8. 发明申请

US20130191688A1 TROUBLESHOOTING ROUTING TOPOLOGY BASED ON A REFERENCE TOPOLOGY 有权
标题翻译：基于参考拓扑的故障排除路由拓扑
公开(公告)号：US20130191688A1
公开(公告)日：2013-07-25
申请号：US13358217
申请日：2012-01-25
申请人： Navneet Agarwal , Jean-Philippe Vasseur , Ajay Kumar
发明人： Navneet Agarwal , Jean-Philippe Vasseur , Ajay Kumar
IPC分类号： G06F11/28 , G06F15/16
CPC分类号： H04L41/12 , H04L41/0873
摘要： In one embodiment, a computing device (e.g., border router or network management server) transmits a discovery message into a computer network, such as in response to a given trigger. In response to the discovery message, the device receives a unicast reply from each node of a plurality of nodes in the computer network, each reply having a neighbor list of a corresponding node and a selected parent node for the corresponding node. Based on the neighbor lists from the replies and a routing protocol shared by each of the plurality of nodes in the computer network, the device may create a reference topology for the computer network, and based on the selected parent nodes from the replies, may also determine a current topology of the computer network. Accordingly, the device may then compare the current topology to the reference topology to detect anomalies in the current topology.
摘要翻译：在一个实施例中，计算设备（例如，边界路由器或网络管理服务器）将发现消息发送到计算机网络中，例如响应于给定的触发。响应于发现消息，设备从计算机网络中的多个节点的每个节点接收单播应答，每个应答具有对应节点的相邻列表和对应节点的所选父节点。基于来自所述答复的所述邻居列表和所述计算机网络中的所述多个节点中的每一个共享的路由协议，所述设备可以为所述计算机网络创建参考拓扑，并且基于来自所述答复的所选择的父节点，还可以确定计算机网络的当前拓扑。因此，设备然后可以将当前拓扑与参考拓扑进行比较，以检测当前拓扑中的异常。

9. 发明申请

US20120254338A1 DISTRIBUTED CONTROL TECHNIQUE FOR RPL TOPOLOGY 有权
标题翻译： RPL拓扑分布控制技术
公开(公告)号：US20120254338A1
公开(公告)日：2012-10-04
申请号：US13117276
申请日：2011-05-27
申请人： Navneet Agarwal , Jean-Philippe Vasseur
发明人： Navneet Agarwal , Jean-Philippe Vasseur
IPC分类号： G06F15/177
CPC分类号： H04W40/246 , H04L45/14 , H04W40/32
摘要： In one embodiment, a distributed control technique may enable management of a monolithic routing topology of nodes in a computer network by apportioning the monolithic routing topology into a plurality of regional routing topology domains, each represented by a directed acyclic graph (DAG). The regional topology domains may include a super topology domain that is established as a super-DAG of intermediate nodes interconnected with leaf nodes and rooted by a master node of the computer network. The regional topology domains may further include at least one local topology domain that is established as a local-DAG of intermediate nodes interconnected with leaf nodes and rooted by a local root node of the computer network. Notably, a super node of the computer network may be configured to participate in both the super topology domain as an intermediate node of the super-DAG and the local topology domain as the local root node of the local-DAG.
摘要翻译：在一个实施例中，分布式控制技术可以通过将单片路由拓扑分配到多个区域路由拓扑域（每个由有向无环图（DAG）表示）来实现对计算机网络中节点的单片路由拓扑的管理。区域拓扑域可以包括被建立为与叶节点互连并且由计算机网络的主节点根植的中间节点的超级DAG的超拓扑域。区域拓扑结构域还可以包括至少一个本地拓扑域，其被建立为与叶节点互连并由计算机网络的本地根节点根植的中间节点的本地DAG。值得注意的是，计算机网络的超级节点可以被配置为作为本地DAG的本地根节点参与超级拓扑域作为超级DAG和本地拓扑域的中间节点。

10. 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。

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