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1. 发明授权

US08780706B1 Controlled distribution of Phasor measurement data using multicast routing 有权
标题翻译：使用多播路由控制相量测量数据的分布
公开(公告)号：US08780706B1
公开(公告)日：2014-07-15
申请号：US13343117
申请日：2012-01-04
申请人： Paul Donner , Navindra Yadav
发明人： Paul Donner , Navindra Yadav
IPC分类号： H04L1/00 , H04L12/26
CPC分类号： H04L45/16 , H04L12/1895
摘要： A network device sends into a network a request to be connected to a particular multicast source-group pair for a Phasor Measurement Unit (PMU) data stream comprising packets containing phasor measurement data. The network device receives the phasor measurement data stream for the particular multicast source-group pair. The source-group pair information is compared against stored data specifying handling rules for packets associated with phasor measurement data streams. The packets in the received phasor measurement data stream are modified when there are handling rules in the stored data for the particular multicast source-group pair of the received phasor measurement data stream. The packets (now modified) for the phasor measurement data stream for the particular multicast source-group pair are re-originated with a new multicast source-group pair and sent into the network. In order to support existing legacy PMU devices, IP unicast-to-multicast conversion is implemented.
摘要翻译：网络设备将包含相量测量数据的分组的相量测量单元（PMU）数据流的请求连接到特定的组播源组对的请求。网络设备接收特定组播源组对的相量测量数据流。将源组对信息与指定与相量测量数据流相关联的分组的处理规则的存储数据进行比较。当接收到的相量测量数据流的特定组播源组对的存储数据中存在处理规则时，接收的相量测量数据流中的分组被修改。用于特定组播源组对的相量测量数据流的分组（现在被修改）用新的组播源组对重新发送并发送到网络中。为了支持现有的传统PMU设备，实现了IP单播到组播转换。

2. 发明授权

US09083710B1 Server load balancing using minimally disruptive hash tables 有权
标题翻译：使用最小破坏性哈希表的服务器负载平衡
公开(公告)号：US09083710B1
公开(公告)日：2015-07-14
申请号：US13342493
申请日：2012-01-03
申请人： Navindra Yadav
发明人： Navindra Yadav
IPC分类号： G06F15/16 , H04L29/08 , H04L12/803
CPC分类号： H04L67/1004 , H04L47/125 , H04L67/1002 , H04L67/1008 , H04L67/1023
摘要： Methods and articles of manufacture relating to server load balancing are disclosed. In one aspect, the method includes load balancing a plurality of network packets among a plurality of servers using a minimally disruptive hash table having a plurality of hash table buckets by identifying a plurality of elements, each element corresponding to at least one of the plurality of servers, inserting at least two of the identified plurality of elements into the minimally disruptive hash table so that at least some of the hash table buckets each include one of the plurality of elements, receiving one of the plurality of network packets, determining a hash table index for the received network packet using a hash function, identifying an element stored in a hash table bucket corresponding to the hash table index, and transmitting the received network packet to a server corresponding to the identified element.
摘要翻译：公开了与服务器负载平衡有关的方法和制造。在一个方面，该方法包括通过识别多个元素来使用具有多个散列表桶的最小破坏性散列表在多个服务器之间对多个网络分组进行负载平衡，每个元素对应于多个服务器，将所识别的多个元素中的至少两个插入到最小破坏性散列表中，使得至少一些散列表桶中的每一个包括多个元素之一，接收多个网络分组之一，确定散列表使用散列函数对接收到的网络分组进行索引，识别存储在与散列表索引相对应的散列表桶中的元素，以及将接收到的网络分组发送到与所识别的元素相对应的服务器。

3. 发明授权

US09071611B2 Integration of network admission control functions in network access devices 有权
标题翻译：网络接入控制功能集成在网络接入设备中
公开(公告)号：US09071611B2
公开(公告)日：2015-06-30
申请号：US12932456
申请日：2011-02-23
申请人： Navindra Yadav , Atul Mahamuni , Azim Ozakil , Bora A. Akyol , Peirong Feng , Thomas J. Enderwick , Aji Joseph , Shashi Kumar , Sambasivam Valliappan
发明人： Navindra Yadav , Atul Mahamuni , Azim Ozakil , Bora A. Akyol , Peirong Feng , Thomas J. Enderwick , Aji Joseph , Shashi Kumar , Sambasivam Valliappan
IPC分类号： H04L29/06
CPC分类号： H04L63/102 , H04L63/0227 , H04L63/0236 , H04L63/0892
摘要： In one embodiment, a method includes receiving a communication from an endpoint device at a network access device located within a data path between the endpoint device and a network, identifying a network admission control policy for the endpoint device, enforcing at the network access device, the network admission control policy for traffic received from the endpoint device, and forwarding at the network access device, traffic from the endpoint device to the network in accordance with the network admission control policy. An apparatus is also disclosed.
摘要翻译：在一个实施例中，一种方法包括：在位于端点设备和网络之间的数据路径内的网络接入设备处从端点设备接收通信，识别端点设备的网络接纳控制策略，在网络接入设备处执行，根据网络接纳控制策略，从端点设备接收的流量的网络准入控制策略以及在网络接入设备处的转发，从端点设备到网络的业务。还公开了一种装置。

4. 发明授权

US08971289B2 Maintaining point of presence for clients roaming within a layer 2 domain 有权
标题翻译：维护客户端在第2层域内漫游的存在点
公开(公告)号：US08971289B2
公开(公告)日：2015-03-03
申请号：US13068926
申请日：2011-05-24
申请人： Vipul Shah , Bhanu Gopalasetty , Navindra Yadav , Sudhir K. Jain , Rohit Suri
发明人： Vipul Shah , Bhanu Gopalasetty , Navindra Yadav , Sudhir K. Jain , Rohit Suri
IPC分类号： H04W4/00 , H04W36/00 , H04W36/02
CPC分类号： H04W36/02
摘要： In one embodiment, a method includes receiving a packet from a source wireless device at a second switch, the source wireless device previously associated with a first switch and roamed to and associated with the second switch, wherein a point of presence for the source wireless device is maintained at the first switch, inserting into the packet a direction indicator, and forwarding the packet from the second switch to the first switch, the direction indicator identifying the packet as being transmitted towards the point of presence for the source wireless device to prevent a forwarding loop. An apparatus is also disclosed.
摘要翻译：在一个实施例中，一种方法包括在第二交换机处从源无线设备接收分组，所述源无线设备先前与第一交换机相关联并且漫游到第二交换机并且与第二交换机相关联，其中源无线设备的存在点保持在第一交换机处，将数据包插入方向指示器，并将分组从第二交换机转发到第一交换机，方向指示符将分组标识为向源无线设备的存在点发送以防止转发循环。还公开了一种装置。

5. 发明授权

US08893216B2 Security measures for the smart grid 有权
标题翻译：智能电网的安全措施
公开(公告)号：US08893216B2
公开(公告)日：2014-11-18
申请号：US13160909
申请日：2011-06-15
申请人： Navindra Yadav , Jeffrey D. Taft
发明人： Navindra Yadav , Jeffrey D. Taft
IPC分类号： H04L29/06
CPC分类号： H04L63/0236 , H04L63/1441 , H04L63/1491 , Y04S40/24
摘要： Security is enabled in an electrical system by examining a configuration file for a substation present in the electrical system, where the substation includes one or more electrical devices and one or more network devices. Based on the examination of the configuration file, information is determined on a characteristic of an electrical device that is selected from a group including a type, allowed role of the electrical device and allowed communication modes for the electrical device. Based on the determined information, a basis for controlling the role and communication modes for the electrical device is identified. A security policy is configured in a network device in the substation to incorporate the identified basis. Based on the configured security policy in the network device, communication patterns for the electrical device are allowed that are associated with the allowed role and allowed communication modes for the electrical device.
摘要翻译：通过检查电气系统中存在的变电站的配置文件，在电气系统中启用安全性，其中变电站包括一个或多个电气设备和一个或多个网络设备。基于配置文件的检查，根据从包括电气设备的类型，允许的角色以及电气设备的允许通信模式的组中选择的电气设备的特性来确定信息。基于确定的信息，识别用于控制电气设备的角色和通信模式的基础。在变电站中的网络设备中配置安全策略以合并所识别的基础。基于网络设备中配置的安全策略，允许与电子设备的允许角色和允许的通信模式相关联的电气设备的通信模式。

6. 发明授权

US08806573B2 Authentication control in low-power lossy networks 有权
标题翻译：低功耗有损网络中的认证控制
公开(公告)号：US08806573B2
公开(公告)日：2014-08-12
申请号：US13206012
申请日：2011-08-09
申请人： Atul Mahamuni , Navindra Yadav , Jonathan Hui , Alec Woo , Wei Hong
发明人： Atul Mahamuni , Navindra Yadav , Jonathan Hui , Alec Woo , Wei Hong
IPC分类号： H04L9/32
CPC分类号： H04W12/06 , Y02D70/142 , Y02D70/144 , Y02D70/146 , Y02D70/22
摘要： Techniques are provided for the controlled scheduling of the authentication of devices in a lossy network, such as a mesh network. An authenticator device that is configured to authenticate devices in a lossy network receives an authentication start message from a particular device to be authenticated. The authenticator device determines a schedule for engaging in an authentication procedure for the particular device based on an indication of current network utilization.
摘要翻译：提供技术用于有损网络（例如网状网络）中的设备的认证的受控调度。被配置为对有损网络中的设备进行认证的认证设备从特定设备接收认证开始消息以进行认证。认证器设备基于当前网络利用率的指示来确定用于参与特定设备的认证过程的调度。

7. 发明授权

US08675654B2 System and method for providing smart grid communications and management 有权
标题翻译：提供智能电网通信和管理的系统和方法
公开(公告)号：US08675654B2
公开(公告)日：2014-03-18
申请号：US13251728
申请日：2011-10-03
申请人： Jeffrey D. Taft , Navindra Yadav
发明人： Jeffrey D. Taft , Navindra Yadav
IPC分类号： H04L12/28 , G05B11/01 , G05D3/12
CPC分类号： H04L12/1863 , H04L12/1836 , H04L12/185 , H04L45/16 , H04L49/15 , H04L49/35 , H04L67/125 , H04L69/22
摘要： A method is provided in one example embodiment and includes receiving a request for a service that involves phasor measurement unit (PMU) data; identifying a service device in a network to perform the service; and multicasting one or more results of the service to a group of subscribers identified by a multicast group address. In more particular embodiments, particular PMU data is redirected to the service device via a service insertion architecture (SIA) protocol. In addition, the service can include replicating packets and masking a subset of traffic for forwarding to a first hop router of the network. In certain example instances, metadata is used in order to apply the service to certain traffic propagating in the network.
摘要翻译：在一个示例实施例中提供了一种方法，并且包括接收对涉及相量测量单元（PMU）数据的服务的请求; 识别网络中的服务设备来执行所述服务; 以及将一个或多个服务结果多播到由多播组地址标识的一组订户。在更具体的实施例中，特定PMU数据经由服务插入架构（SIA）协议被重定向到服务设备。此外，该服务可以包括复制分组并且掩蔽用于转发到网络的第一跳路由器的流量子集。在某些示例实例中，使用元数据来将服务应用于在网络中传播的某些流量。

8. 发明授权

US08538708B2 Fast fault isolation and restoration for distribution networks 有权
标题翻译：配电网快速故障隔离和恢复
公开(公告)号：US08538708B2
公开(公告)日：2013-09-17
申请号：US13021932
申请日：2011-02-07
申请人： Navindra Yadav , Shmuel Shaffer , Nitin Nayar
发明人： Navindra Yadav , Shmuel Shaffer , Nitin Nayar
IPC分类号： G06F19/00
CPC分类号： H02H7/261 , H02H1/0084 , H02J13/0079 , H02J13/0086 , Y02E60/725 , Y04S10/20 , Y04S10/525
摘要： In one embodiment, a method includes obtaining information relating to a steady state operation of a portion of an electrical network, the electrical network including a plurality of components, the information being obtained from the plurality of components while the portion of the electrical network is operating at steady state, wherein the information is obtained through a communications network that at least partially overlays the electrical network. The method also includes detecting a fault in the electrical network, isolating the location of the fault, and restoring the electrical network. The fault is detected by at least a first component of the plurality of components. Restoring the electrical network includes determining when the first component owns the fault. Determining when the first component owns the fault includes at least processing the information obtained from the plurality of components.
摘要翻译：在一个实施例中，一种方法包括获得与电网的一部分的稳态操作相关的信息，所述电网包括多个组件，所述信息是从所述多个组件获得的，而所述电网的所述部分正在操作在稳定状态下，其中通过至少部分地覆盖电网的通信网络获得信息。该方法还包括检测电网故障，隔离故障位置和恢复电网。故障由多个部件中的至少第一部件检测。恢复电网包括确定第一组件何时拥有故障。确定第一组件何时拥有故障包括至少处理从多个组件获得的信息。

9. 发明申请

US20120203479A1 FAST FAULT ISOLATION AND RESTORATION FOR DISTRIBUTION NETWORKS 有权
标题翻译：分销网络的快速分离和恢复
公开(公告)号：US20120203479A1
公开(公告)日：2012-08-09
申请号：US13021932
申请日：2011-02-07
申请人： Navindra Yadav , Shmuel Shaffer , Nitin Nayar
发明人： Navindra Yadav , Shmuel Shaffer , Nitin Nayar
IPC分类号： G06F19/00 , G01R31/02
CPC分类号： H02H7/261 , H02H1/0084 , H02J13/0079 , H02J13/0086 , Y02E60/725 , Y04S10/20 , Y04S10/525
摘要： In one embodiment, a method includes obtaining information relating to a steady state operation of a portion of an electrical network, the electrical network including a plurality of components, the information being obtained from the plurality of components while the portion of the electrical network is operating at steady state, wherein the information is obtained through a communications network that at least partially overlays the electrical network. The method also includes detecting a fault in the electrical network, isolating the location of the fault, and restoring the electrical network. The fault is detected by at least a first component of the plurality of components. Restoring the electrical network includes determining when the first component owns the fault. Determining when the first component owns the fault includes at least processing the information obtained from the plurality of components.
摘要翻译：在一个实施例中，一种方法包括获得与电网的一部分的稳态操作相关的信息，所述电网包括多个组件，所述信息是从所述多个组件获得的，而所述电网的所述部分正在操作在稳定状态下，其中通过至少部分地覆盖电网的通信网络获得信息。该方法还包括检测电网故障，隔离故障位置和恢复电网。故障由多个部件中的至少第一部件检测。恢复电网包括确定第一组件何时拥有故障。确定第一组件何时拥有故障包括至少处理从多个组件获得的信息。

10. 发明申请

US20120155395A1 Client modeling in a forwarding plane 有权
标题翻译：转发平面中的客户端建模
公开(公告)号：US20120155395A1
公开(公告)日：2012-06-21
申请号：US12928863
申请日：2010-12-21
申请人： Navindra Yadav , Bhanu Gopalasetty , Sheausong Yang
发明人： Navindra Yadav , Bhanu Gopalasetty , Sheausong Yang
IPC分类号： H04L12/56 , H04W4/00
CPC分类号： H04L41/0893 , H04L49/503
摘要： In one embodiment, a method includes receiving a packet at a network device in communication with a plurality of client nodes, the packet identifying a first client node, performing a look up in a table stored at the network device to locate policies associated with the first client node, the table including an entry for each of the client nodes, each entry having a plurality of policies associated with the client node, applying the policies associated with the first client node at a forwarding engine at the network device, and forwarding the packet from the network device. An apparatus is also disclosed.
摘要翻译：在一个实施例中，一种方法包括在与多个客户端节点通信的网络设备处接收分组，该分组识别第一客户端节点，在存储在网络设备处的表中执行查找以定位与第一客户端节点相关联的策略客户端节点，该表包括用于每个客户端节点的条目，每个条目具有与客户机节点相关联的多个策略，将与第一客户端节点相关联的策略应用于网络设备处的转发引擎，并且转发该分组从网络设备。还公开了一种装置。

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