公开(公告)号：US06515967B1

公开(公告)日：2003-02-04

申请号：US09107268

申请日：1998-06-30

申请人： Liming Wei ,  Dino Farinacci

发明人： Liming Wei ,  Dino Farinacci

IPC分类号： H04L1226

CPC分类号： H04L45/00 ,  H04L12/1868 ,  H04L45/28

摘要： A method and system for detecting faults in data packet routing devices in a computer network capable of routing messages using a multicast protocol is described. Faults in devices, such as routers and switches, are detected in near real-time when using a multicast routing infrastructure by configuring a device to be a sender or source of test data packets and one or more other devices to receive test data packets. The test packet sender transmits test data packets to a test group of test packet receivers where the test group has a group identifier. The test receivers prepare data or fault reports describing errors regarding missing or duplicated data packets. These fault reports are prepared soon after the errors are detected and sent back to a multicast routing manager for isolating the device causing the fault. The messages sent to the test devices contain instructions regarding time intervals during which fault reports can be sent to the multicast routing manager from the multiple test receivers.

摘要翻译： 描述了一种用于检测能够使用多播协议路由消息的计算机网络中的数据分组路由设备中的故障的方法和系统。 通过将设备配置为测试数据包的发送者或源，以及一个或多个其他设备来接收测试数据包，在使用组播路由基础设施时，将近乎实时地检测设备（如路由器和交换机）中的故障。 测试分组发送器将测试数据分组发送到测试组具有组标识符的测试分组接收器的测试组。 测试接收器准备数据或故障报告，描述有关丢失或重复数据包的错误。 这些故障报告在检测到错误后立即进行准备，并发回到组播路由管理器，以隔离导致故障的设备。 发送到测试设备的消息包含有关可以从多个测试接收机将故障报告发送到组播路由管理器的时间间隔的指令。

公开(公告)号：US07761500B1

公开(公告)日：2010-07-20

申请号：US09515941

申请日：2000-02-29

申请人： Toerless Eckert ,  Liming Wei ,  Dino Farinacci

发明人： Toerless Eckert ,  Liming Wei ,  Dino Farinacci

IPC分类号： G06F13/00

CPC分类号： H04L67/2814 ,  H04L67/02 ,  H04L67/28

摘要： A method of signaling in a computer network uses interception by a network device of a message transmitted by a client computer to a server. The message contains a Universal Resource Locator (URL), the URL having a reserved port designation. The network device parses the URL and intercepts the message in response to finding the reserved port designation in the URL. The network device executes a command, where the command is carried in a field of the intercepted message. The client computer receives the URL having the reserved port designation in a HTML file transmitted to the client computer by the server. The message containing the URL is transmitted by the client computer in response to a user requesting a resource displayed in a web page displayed by the client computer. A second web page is transmitted to the client computer by a server receiving a request for services, and the URL containing the port designation is written into the second web page so that the URL is executed automatically as the second web page is received by the client's browser. The method transmits a redirect message by the network device to the client computer, the redirect message redirecting to an address of a web page without the reserved port designation in the URL to carry information to the server.

摘要翻译： 在计算机网络中的信令的方法使用网络设备将由客户端计算机发送的消息拦截到服务器。 该消息包含通用资源定位符（URL），URL具有保留端口名称。 网络设备解析URL并拦截消息以响应于在URL中找到保留的端口名称。 网络设备执行命令，其中命令被携带在被拦截的消息的字段中。 客户端计算机在由服务器发送到客户端计算机的HTML文件中接收具有保留端口名称的URL。 响应于请求在客户端计算机显示的网页中显示的资源的用户，客户端计算机发送包含该URL的消息。 通过接收服务请求的服务器将第二网页发送到客户端计算机，并且将包含端口指定的URL写入第二网页，使得URL由客户端的第二网页接收到，自动执行 浏览器 该方法通过网络设备将重定向消息发送到客户端计算机，重定向消息重定向到网页的地址，而在URL中没有保留的端口指定，以将信息携带到服务器。

公开(公告)号：US06940821B1

公开(公告)日：2005-09-06

申请号：US10241597

申请日：2002-09-09

申请人： Liming Wei ,  Dino Farinacci

发明人： Liming Wei ,  Dino Farinacci

IPC分类号： H04L12/18 ,  H04L12/56 ,  H04L12/26

CPC分类号： H04L45/00 ,  H04L12/1868 ,  H04L45/28

摘要： A test monitoring device for detecting a fault in a multicast routing infrastructure includes a processor, a memory coupled with the processor, and a network interface coupled with the processor. The device is configured to send a source configuration request for configuring a device in the infrastructure to be a test packet source, and a receiver configuration request for configuring one or more devices in the infrastructure to be test packet receivers where the test packet source sends out test packets to a predetermined group of test packet receivers. The source configuration request contains an identifier identifying the test monitoring device. The predetermined group has a group identifier. The device is also configured to examine data reports from the test packet receivers relating to a plurality of test packets sent by the test packet source.

摘要翻译： 用于检测组播路由基础架构中的故障的测试监视设备包括处理器，与处理器耦合的存储器以及与处理器耦合的网络接口。 该设备被配置为发送用于将基础架构中的设备配置为测试分组源的源配置请求，以及用于将基础设施中的一个或多个设备配置为测试分组源发送出去的测试分组接收机的接收机配置请求 测试分组到预定组的测试分组接收机。 源配置请求包含识别测试监视设备的标识符。 预定组具有组标识符。 该设备还被配置为检查来自与测试分组源发送的多个测试分组有关的测试分组接收者的数据报告。

公开(公告)号：US08605723B2

公开(公告)日：2013-12-10

申请号：US13305662

申请日：2011-11-28

申请人： Rahul Aggarwal ,  George Apostolopoulos ,  Liming Wei

发明人： Rahul Aggarwal ,  George Apostolopoulos ,  Liming Wei

IPC分类号： H04L12/28 ,  H04L29/02

CPC分类号： H04L45/507 ,  H04H20/16 ,  H04L12/66 ,  H04L29/12575 ,  H04L45/16 ,  H04L45/48

摘要： A method and apparatus for providing point-to-multipoint label switch paths (LSPs) in a Multi-Protocol Label Switching (MPLS) network is described. In one embodiment, a point-to-multipoint LSP is built in a MPLS network by using Resource Reservation Protocol Traffic Engineering (RSVP-TE) to signal the point-to-multipoint LSP as separate point-to-point LSPs and to merge the separate point-to-point LSPs into the point-to-multipoint LSP.

公开(公告)号：US5170116A

公开(公告)日：1992-12-08

申请号：US739031

申请日：1991-08-01

申请人： Jean Bavard ,  Liming Wei

发明人： Jean Bavard ,  Liming Wei

IPC分类号： H02P21/14

CPC分类号： H02P21/141

摘要： A method and device are provided for estimating the magnetic induction flux of an asynchronous electric motor, notably for enabling said motor to be controlled by magnetic induction flux regulation, the method consisting of measuring the motor voltage and current, calculating a flux, defining a measured flux, using the operating equations for said motor and employing said measured values and predetermined values for characteristic parameters of said motor, one of which at least, being fixed arbitrarily, may differ considerably from the actual value thereof, and on the basis of said measured flux, calculating a flux defined as the estimated flux and which can be identified with the actual flux through the use of an expression deduced from said motor operating equations as a function of said measured flux, and from characteristic parameters of said motor other than said parameter having a arbitrarily fixed value which may differ considerably from said actual value, and if necessary from said voltage or current measurements.

摘要翻译： 提供了一种用于估计异步电动机的磁感应通量的方法和装置，特别是为了使所述电动机能够通过磁感应磁通调节来控制，该方法包括测量电动机的电压和电流，计算通量， 通量，使用所述电动机的操作方程，并采用所述测量值和用于所述电动机的特征参数的预定值，其中至少任意一个固定地固定地可以与其实际值大不相同，并且基于所测量的 通量，计算通量，其通过使用从所述电动机操作方程式推导出的表达作为所述测量的通量的函数，以及除了所述参数之外的所述电动机的特性参数，计算通过定义为估计通量的通量并且可以用实际通量来识别 具有可以与所述实际值显着不同的任意固定值，并且如果需要的话 表示电压或电流测量。

公开(公告)号：US09240942B2

公开(公告)日：2016-01-19

申请号：US12932604

申请日：2011-02-28

申请人： Yiqun Cai ,  Heidi Ou ,  Liming Wei ,  Apoorva Karan

发明人： Yiqun Cai ,  Heidi Ou ,  Liming Wei ,  Apoorva Karan

IPC分类号： H04L12/721 ,  H04L12/729 ,  H04L12/18 ,  H04L12/707

CPC分类号： H04L45/125 ,  H04L12/1886 ,  H04L45/24

摘要： In one embodiment, a method includes identifying a packet at an upstream node in communication with a source and in communication with a downstream node through equal cost multiple paths including first and second multi-access networks, the packet transmitted on the first multi-access network and associated with a multicast group, and transmitting from the upstream node a request to the downstream node to join the group on the second multi-access network, if the upstream node is already transmitting data to the group on the second multi-access network, or a bandwidth utilization at the first multi-access network exceeds a specified threshold. An apparatus is also disclosed.

摘要翻译： 在一个实施例中，一种方法包括在与源通信的上游节点处识别分组，并且通过包括第一和第二多接入网络的等价多路径与下游节点通信，所述分组在第一多址网络 并且与组播组相关联，并且如果所述上游节点已经在所述第二多址接入网络上向所述组发送数据，则从所述上游节点向所述下游节点发送加入所述第二多址网络上的组的请求， 或者第一多接入网络的带宽利用率超过规定的阈值。 还公开了一种装置。

公开(公告)号：US20060271780A1

公开(公告)日：2006-11-30

申请号：US11137597

申请日：2005-05-25

申请人： Anand Oswal ,  Jayaraman Iyer ,  Liming Wei

发明人： Anand Oswal ,  Jayaraman Iyer ,  Liming Wei

IPC分类号： H04L9/00

CPC分类号： H04L9/0833 ,  H04L63/065 ,  H04L63/102 ,  H04L2209/60 ,  H04L2209/80

摘要： Providing a multicast service to a mobile node includes receiving a first request to join a multicast group from a first cell site. The first request requests that a first mobile node be permitted to join the multicast group. A first multicast source operable to provide content to the first mobile node is identified. The multicast group and the first multicast source are associated to yield a first group-source combination. A first key is assigned to the first group-source combination, and the first key is provided to the first cell site.

公开(公告)号：US20120218898A1

公开(公告)日：2012-08-30

申请号：US12932604

申请日：2011-02-28

申请人： Yiqun Cai ,  Heidi Ou ,  Liming Wei ,  Apoorva Karan

发明人： Yiqun Cai ,  Heidi Ou ,  Liming Wei ,  Apoorva Karan

IPC分类号： H04L12/26 ,  H04L12/56

CPC分类号： H04L45/125 ,  H04L12/1886 ,  H04L45/24

摘要： In one embodiment, a method includes identifying a packet at an upstream node in communication with a source and in communication with a downstream node through equal cost multiple paths including first and second multi-access networks, the packet transmitted on the first multi-access network and associated with a multicast group, and transmitting from the upstream node a request to the downstream node to join the group on the second multi-access network, if the upstream node is already transmitting data to the group on the second multi-access network, or a bandwidth utilization at the first multi-access network exceeds a specified threshold. An apparatus is also disclosed.

摘要翻译： 在一个实施例中，一种方法包括在与源通信的上游节点处识别分组，并且通过包括第一和第二多接入网络的等价多路径与下游节点通信，所述分组在第一多址网络 并且与组播组相关联，并且如果所述上游节点已经在所述第二多址接入网络上向所述组发送数据，则从所述上游节点向所述下游节点发送加入所述第二多址网络上的组的请求， 或者第一多接入网络的带宽利用率超过规定的阈值。 还公开了一种装置。

公开(公告)号：US20090161675A1

公开(公告)日：2009-06-25

申请号：US12341842

申请日：2008-12-22

申请人： Rahul Aggarwal ,  George Apostolopoulos ,  Liming Wei

发明人： Rahul Aggarwal ,  George Apostolopoulos ,  Liming Wei

IPC分类号： H04L12/56

CPC分类号： H04L45/507 ,  H04H20/16 ,  H04L12/66 ,  H04L29/12575 ,  H04L45/16 ,  H04L45/48

摘要： A method and apparatus for providing point-to-multipoint label switch paths (LSPs) in a Multi-Protocol Label Switching (MPLS) network is described. In one embodiment, a point-to-multipoint LSP is built in a MPLS network by using Resource Reservation Protocol Traffic Engineering (RSVP-TE) to signal the point-to-multipoint LSP as separate point-to-point LSPs and to merge the separate point-to-point LSPs into the point-to-multipoint LSP.

摘要翻译： 描述了在多协议标签交换（MPLS）网络中提供点对多点标签交换路径（LSP）的方法和装置。 在一个实施例中，通过使用资源预留协议流量工程（RSVP-TE）将点对多点的LSP信号作为单独的点对点LSP，在MPLS网络中建立点对多点的LSP，并且将 将点对点LSP分离成点到多点的LSP。

公开(公告)号：US07477642B2

公开(公告)日：2009-01-13

申请号：US11045196

申请日：2005-01-27

申请人： Rahul Aggarwal ,  George Apostolopoulos ,  Liming Wei

发明人： Rahul Aggarwal ,  George Apostolopoulos ,  Liming Wei

IPC分类号： H04L12/28

CPC分类号： H04L45/507 ,  H04H20/16 ,  H04L12/66 ,  H04L29/12575 ,  H04L45/16 ,  H04L45/48

摘要： A method and apparatus for providing point-to-multipoint label switch paths (LSPs) in a Multi-Protocol Label Switching (MPLS) network is described. In one embodiment, a point-to-multipoint LSP is built in a MPLS network by using Resource Reservation Protocol Traffic Engineering (RSVP-TE) to signal the point-to-multipoint LSP as separate point-to-point LSPs and to merge the separate point-to-point LSPs into the point-to-multipoint LSP.

摘要翻译： 描述了在多协议标签交换（MPLS）网络中提供点对多点标签交换路径（LSP）的方法和装置。 在一个实施例中，通过使用资源预留协议流量工程（RSVP-TE）将点对多点的LSP信号作为单独的点对点LSP，在MPLS网络中建立了点对多点的LSP，并且将 将点对点LSP分离成点到多点的LSP。