公开(公告)号：US20070189157A1

公开(公告)日：2007-08-16

申请号：US11353312

申请日：2006-02-13

申请人： Robert Andrews ,  Navindra Yadav ,  Shree Murthy ,  Gnanaprakasam Pandian ,  Murali Duvvury ,  Sudhakar Padavala

发明人： Robert Andrews ,  Navindra Yadav ,  Shree Murthy ,  Gnanaprakasam Pandian ,  Murali Duvvury ,  Sudhakar Padavala

IPC分类号： H04J3/14

CPC分类号： H04L45/18 ,  H04L45/00 ,  H04L45/02 ,  H04L45/22

摘要： Method and system for providing dynamic configuration of link redundancy in data network based on detection of dynamic changes in the network topology including the steps of detecting data network topology, determining a number of data paths from a node in the data network topology to each of a respective pair of peer nodes coupled to the node by a corresponding interface, determining a data path in the data network topology between the peer nodes, calculating a set of nodes reachable via each interface coupled to the node and the respective peer node in the data network topology, and comparing the set of calculated nodes is provided.

摘要翻译： 基于检测网络拓扑中的动态变化来提供数据网络中的链路冗余的动态配置的方法和系统，包括检测数据网络拓扑，确定从数据网络拓扑中的节点到数据网络拓扑中的每一个的数据路径 相应的一对对等节点通过对应的接口耦合到节点，确定对等节点之间的数据网络拓扑中的数据路径，计算经由耦合到该节点的每个接口和数据网络中的相应对等节点可到达的一组节点 提供拓扑结构，并比较计算出的节点集。

公开(公告)号：US09112710B2

公开(公告)日：2015-08-18

申请号：US13251701

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 ,  H04L12/18 ,  H04L12/933 ,  H04L12/931 ,  H04L12/761

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 phasor measurement unit (PMU) data in a first transmission; converting the first transmission into a multicast transmission; and multicasting the PMU data to a multicast group address, which identifies a plurality of subscribers. In more specific implementations, the converting of the first transmission into the multicast transmission occurs at a first-hop router in relation to a PMU source that sent the first transmission. In some cases, the first transmission is a unicast transmission sent from a network element, which includes a PMU sensor.

摘要翻译： 在一个示例实施例中提供了一种方法，并且包括在第一传输中接收相量测量单元（PMU）数据; 将第一传输转换成多播传输; 以及将所述PMU数据组播到识别多个订户的多播组地址。 在更具体的实现中，将第一传输转换为组播传输发生在相对于发送第一传输的PMU源的第一跳路由器处。 在一些情况下，第一传输是从包括PMU传感器的网元发送的单播传输。

公开(公告)号：US08705528B2

公开(公告)日：2014-04-22

申请号：US13455822

申请日：2012-04-25

申请人： Navindra Yadav ,  James Rivers ,  Gnanaprakasam Pandian ,  Pauline Shuen ,  Scott Emery

发明人： Navindra Yadav ,  James Rivers ,  Gnanaprakasam Pandian ,  Pauline Shuen ,  Scott Emery

IPC分类号： H04L12/56 ,  H04L12/54 ,  H04L12/18

CPC分类号： H04L12/56 ,  H04L12/1868 ,  H04L12/1886 ,  H04L45/16

摘要： In one embodiment, a subnet-scoped multicast packet is received on an interface of a forwarding device that is connected to a host device of a subnet of a forwarding domain. The received subnet-scoped multicast packet is transmitted from one or more other interfaces of the forwarding device that are connected to one or more other host devices of the subnet. The received subnet-scoped multicast packet is also encapsulated with an additional header. The encapsulated subnet-scoped multicast packet is forwarded from the forwarding device to an intermediate router which routes the encapsulated subnet-scoped multicast packet to one or more other forwarding devices configured to decapsulate the encapsulated subnet-scoped multicast packet and transmit the decapsulated subnet-scoped multicast packet to one or more connected host devices of an additional portion of the subnet.

摘要翻译： 在一个实施例中，在连接到转发域的子网的主机设备的转发设备的接口上接收子网范围的组播分组。 接收到的子网范围的组播数据包是从连接到子网的一个或多个其他主机设备的转发设备的一个或多个其他接口传送的。 接收到的子网范围的组播数据包也封装了一个额外的头。 封装的子网范围组播数据包从转发设备转发到中间路由器，路由器将封装的子网范围组播数据包路由到一个或多个其他转发设备，该转发设备配置为对封装的子网范围组播数据包进行解封装，并发送解封装的子网范围 组播分组到子网的附加部分的一个或多个连接的主机设备。

公开(公告)号：US08675601B2

公开(公告)日：2014-03-18

申请号：US12781120

申请日：2010-05-17

申请人： Patrice Calhoun ,  Abhijit Choudhury ,  Rohit Suri ,  Sudhir Jain ,  Ranganatha Marathe ,  Bhanu Gopalasetty ,  Navindra Yadav ,  Sreenivasulu Mondem

发明人： Patrice Calhoun ,  Abhijit Choudhury ,  Rohit Suri ,  Sudhir Jain ,  Ranganatha Marathe ,  Bhanu Gopalasetty ,  Navindra Yadav ,  Sreenivasulu Mondem

IPC分类号： H04W4/00

CPC分类号： H04W76/12 ,  H04W36/0016 ,  H04W36/10

摘要： Techniques are provided to enable a support for guest access of devices in a network. At a controller apparatus in a first mobility sub-domain of a network comprising a plurality of mobility sub-domains, a request message containing a request for guest network access for a device is received from a first access switch in the first mobility sub-domain. The controller apparatus forwards the request message to a guest controller. At a tunneling endpoint apparatus in the first mobility sub-domain, a tunnel is established to the guest controller to carry traffic between the device and the guest controller. Traffic for the device passes in a tunnel between the first access switch and the tunneling endpoint apparatus in the first mobility sub-domain, through the tunneling endpoint apparatus in the first mobility sub-domain and in the tunnel between the routing apparatus in the first mobility sub-domain and the guest controller.

摘要翻译： 提供技术以支持对网络中设备的访客访问。 在包括多个移动性子域的网络的第一移动性子域中的控制器装置处，从第一移动性子域中的第一接入交换机接收到包含用于设备的访客网络接入请求的请求消息 。 控制器装置将请求消息转发给客人控制器。 在第一移动子域中的隧道终端设备处，建立到客户控制器的隧道，以在设备和客户控制器之间携带业务。 该设备的业务通过第一移动性子域中的第一接入交换机和隧道终端设备之间的隧道，通过第一移动性子域中的隧道终端设备和第一移动性子域中的路由设备之间的隧道 子域和访客控制器。

公开(公告)号：US08644137B2

公开(公告)日：2014-02-04

申请号：US11353312

申请日：2006-02-13

申请人： Robert Andrews ,  Navindra Yadav ,  Shree Murthy ,  Gnanaprakasam Pandian ,  Murali Duvvury ,  Sudhakar Padavala

发明人： Robert Andrews ,  Navindra Yadav ,  Shree Murthy ,  Gnanaprakasam Pandian ,  Murali Duvvury ,  Sudhakar Padavala

IPC分类号： H04L12/26

CPC分类号： H04L45/18 ,  H04L45/00 ,  H04L45/02 ,  H04L45/22

摘要： Method and system for providing dynamic configuration of link redundancy in data network based on detection of dynamic changes in the network topology including the steps of detecting data network topology, determining a number of data paths from a node in the data network topology to each of a respective pair of peer nodes coupled to the node by a corresponding interface, determining a data path in the data network topology between the peer nodes, calculating a set of nodes reachable via each interface coupled to the node and the respective peer node in the data network topology, and comparing the set of calculated nodes is provided.

摘要翻译： 基于检测网络拓扑中的动态变化来提供数据网络中的链路冗余的动态配置的方法和系统，包括检测数据网络拓扑，确定从数据网络拓扑中的节点到数据网络拓扑中的每一个的数据路径 相应的一对对等节点通过对应的接口耦合到节点，确定对等节点之间的数据网络拓扑中的数据路径，计算经由耦合到该节点的每个接口和数据网络中的相应对等节点可到达的一组节点 提供拓扑结构，并比较计算出的节点集。

公开(公告)号：US08542681B2

公开(公告)日：2013-09-24

申请号：US12883531

申请日：2010-09-16

申请人： Robert Andrews ,  Navindra Yadav ,  Shree Murthy ,  Gnanaprakasam Pandian

发明人： Robert Andrews ,  Navindra Yadav ,  Shree Murthy ,  Gnanaprakasam Pandian

IPC分类号： H04L12/28

CPC分类号： H04L12/4675 ,  H04L12/4695 ,  H04L41/0816

摘要： Method and system for providing dynamic network data traffic monitoring including monitoring a data network, detecting a change in the data network, initiating a span session based on the detected change in the data network, and dynamically modifying network configuration based on the detected change in the data network is disclosed.

摘要翻译： 用于提供动态网络数据流量监控的方法和系统，包括监视数据网络，检测数据网络的变化，基于检测到的数据网络的变化启动跨度会话，以及基于检测到的数据网络中的变化动态地修改网络配置 数据网络被公开。

公开(公告)号：US08189588B2

公开(公告)日：2012-05-29

申请号：US12403906

申请日：2009-03-13

申请人： Navindra Yadav ,  Shree Murthy ,  Vijayaraghavan Doraiswami ,  Peter Geoffrey Jones

发明人： Navindra Yadav ,  Shree Murthy ,  Vijayaraghavan Doraiswami ,  Peter Geoffrey Jones

IPC分类号： H04L12/56

CPC分类号： H04L67/1095 ,  H04L45/00 ,  H04L45/24 ,  H04L45/28 ,  H04L69/28

摘要： In an example embodiment, packets for a selected flow are replicated and sent over one or more diverse paths, such as a primary path and at least one secondary path, to a destination switching device. At the destination switching device, one copy of the replicated packets is selected for delivery to the destination, and the remaining copies are discarded. In the event that packets are not received at the destination switching device due to loss of connection on the primary path or packets are not timely delivered due to congestion on the primary path, a different path may be selected as the primary path.

摘要翻译： 在示例实施例中，用于所选流的分组被复制并通过一个或多个不同路径（诸如主路径和至少一个次要路径）发送到目的地交换设备。 在目的地交换设备处，选择复制的分组的一个副本以传送到目的地，并且剩余的副本被丢弃。 如果由于主路径上的连接丢失而在目的地交换设备处没有接收到分组，否则由于主路径上的拥塞而不能及时地传送分组，可以选择不同的路径作为主要路径。

公开(公告)号：US20110280213A1

公开(公告)日：2011-11-17

申请号：US12781120

申请日：2010-05-17

申请人： Patrice Calhoun ,  Abhijit Choudhury ,  Rohit Suri ,  Sudhir Jain ,  Ranganatha Marathe ,  Bhanu Gopalasetty ,  Navindra Yadav ,  Sreenivasulu Mondem

发明人： Patrice Calhoun ,  Abhijit Choudhury ,  Rohit Suri ,  Sudhir Jain ,  Ranganatha Marathe ,  Bhanu Gopalasetty ,  Navindra Yadav ,  Sreenivasulu Mondem

IPC分类号： H04W36/10 ,  H04W72/04

CPC分类号： H04W76/12 ,  H04W36/0016 ,  H04W36/10

摘要： Techniques are provided to enable a support for guest access of devices in a network. At a controller apparatus in a first mobility sub-domain of a network comprising a plurality of mobility sub-domains, a request message containing a request for guest network access for a device is received from a first access switch in the first mobility sub-domain. The controller apparatus forwards the request message to a guest controller. At a tunneling endpoint apparatus in the first mobility sub-domain, a tunnel is established to the guest controller to carry traffic between the device and the guest controller. Traffic for the device passes in a tunnel between the first access switch and the tunneling endpoint apparatus in the first mobility sub-domain, through the tunneling endpoint apparatus in the first mobility sub-domain and in the tunnel between the routing apparatus in the first mobility sub-domain and the guest controller.

摘要翻译： 提供技术以支持对网络中设备的访客访问。 在包括多个移动性子域的网络的第一移动性子域中的控制器装置处，从第一移动性子域中的第一接入交换机接收到包含用于设备的访客网络接入请求的请求消息 。 控制器装置将请求消息转发给客人控制器。 在第一移动子域中的隧道终端设备处，建立到客户控制器的隧道，以在设备和客户控制器之间携带业务。 该设备的业务通过第一移动性子域中的第一接入交换机和隧道终端设备之间的隧道，通过第一移动性子域中的隧道终端设备和第一移动性子域中的路由设备之间的隧道 子域和访客控制器。

公开(公告)号：US20110274037A1

公开(公告)日：2011-11-10

申请号：US12823227

申请日：2010-06-25

申请人： Sudhir Jain ,  Patrice Calhoun ,  Abhijit Choudhury ,  Rohit Suri ,  Ly Loi ,  Bhanu Gopalasetty ,  Navindra Yadav ,  Fusun Ertemalp

发明人： Sudhir Jain ,  Patrice Calhoun ,  Abhijit Choudhury ,  Rohit Suri ,  Ly Loi ,  Bhanu Gopalasetty ,  Navindra Yadav ,  Fusun Ertemalp

IPC分类号： H04W40/00

CPC分类号： H04W8/085 ,  H04W8/26

摘要： A system and method are provided for a hierarchical distributed control architecture to support roaming of wireless client devices. A plurality of access switches are provided and configured to serve one or more Internet Protocol (IP) subnets that comprises a plurality of IP addresses. The plurality of access switches are arranged in switch peer groups such that each access switch within a given switch peer group is configured to store information about other access switches in that switch peer group and about locations of wireless client devices that are associated with any wireless access point on any access switch in the switch peer group. The plurality of access switches are further grouped into a corresponding one of a plurality of mobility sub-domains each comprising a plurality of switch peer groups. A plurality of controller devices are provided, each configured to control access switches in a corresponding mobility sub-domain. Each controller device stores information about the plurality of access switches within its mobility sub-domain and about locations of wireless client devices at access switches in its mobility sub-domain. A central controller device is provided and configured to communicate with the plurality of controller devices for the respective mobility sub-domains. The central controller device is configured to store information about locations of wireless client devices in the mobility sub-domains.

摘要翻译： 提供了一种用于分级分布式控制架构以支持无线客户端设备的漫游的系统和方法。 多个接入交换机被提供和配置为服务于包括多个IP地址的一个或多个因特网协议（IP）子网。 多个接入交换机布置在交换对等体组中，使得给定交换机对等体组内的每个接入交换机被配置为存储关于该交换机对等体组中的其他接入交换机的信息以及与任何无线接入相关联的无线客户端设备的位置 指向交换机对等体组中的任何接入交换机。 多个接入交换机被进一步分组成多个移动性子域中的每个包括多个交换对等体组的对应的一个。 提供了多个控制器设备，每个控制器设备被配置为控制相应的移动性子域中的接入交换机。 每个控制器设备将关于多个接入交换机的信息存储在其移动性子域内以及关于移动性子域中的接入交换机处的无线客户端设备的位置。 中央控制器设备被提供和配置成与用于各个移动性子域的多个控制器设备进行通信。 中央控制器设备被配置为存储关于无线客户端设备在移动性子域中的位置的信息。

公开(公告)号：US20110274035A1

公开(公告)日：2011-11-10

申请号：US12773355

申请日：2010-05-04

申请人： Navindra Yadav ,  Bhanu Gopalasetty ,  Patrice Calhoun ,  Abhijit Choudhury ,  Rohit Suri ,  Sudir Jain ,  Fusun Ertemalp ,  Kent Leung

发明人： Navindra Yadav ,  Bhanu Gopalasetty ,  Patrice Calhoun ,  Abhijit Choudhury ,  Rohit Suri ,  Sudir Jain ,  Fusun Ertemalp ,  Kent Leung

IPC分类号： H04W40/00

CPC分类号： H04W40/24 ,  H04L45/04 ,  H04L45/42

摘要： Techniques are provided for seamless integration of wired and wireless functionality packet forwarding in network. A plurality of access switches are provided in each of a plurality of mobility sub-domains that are part of a mobility domain of a network. Each access switch serves one or more Internet Protocol (IP) subnets, each comprising a plurality of IP addresses. An access switch obtains an IP address for a wireless device according to the one or more IP subnets that the access switch serves. The access switch sends an association advertisement message to indicate the IP address of the wireless device and to enable other access switches and routers to compute a path to the wireless device. When a wireless device obtains an IP address, it can keep the same IP address as it roams in the mobility domain.

摘要翻译： 为网络中有线和无线功能数据包转发的无缝集成提供了技术。 在作为网络的移动性域的一部分的多个移动性子域中的每一个中提供多个接入交换机。 每个接入交换机提供一个或多个互联网协议（IP）子网，每个网络包括多个IP地址。 接入交换机根据接入交换机所服务的一个或多个IP子网获取无线设备的IP地址。 接入交换机发送关联广告消息以指示无线设备的IP地址，并使得其他接入交换机和路由器能够计算到无线设备的路径。 当无线设备获得IP地址时，它可以保持与移动域中漫游相同的IP地址。