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公开(公告)号：US07031264B2
公开(公告)日：2006-04-18
申请号：US10459948
申请日：2003-06-12
申请人： Akshay Adhikari , Scott Vincent Bianco , Lorraine Denby , Colin L. Mallows , Jean Meloche , Balaji Rao , Shane M. Sullivan , Yehuda Vardi
发明人： Akshay Adhikari , Scott Vincent Bianco , Lorraine Denby , Colin L. Mallows , Jean Meloche , Balaji Rao , Shane M. Sullivan , Yehuda Vardi
IPC分类号： H04L12/56
CPC分类号： H04L43/12 , H04L43/0829 , H04L43/0835 , H04L43/0858 , H04L43/0864 , H04L43/087 , H04L43/106
摘要： Techniques are disclosed for improved monitoring and analysis of VoIP communications, multimedia communications or other types of network traffic in a network-based communication system. In accordance with one aspect of the invention, endpoint devices of the network-based communication system are configurable so as to collectively implement a distributed monitoring and analysis system which does not require a centralized testing server or other centralized controller. Distributed test units associated with the endpoint devices may be utilized in implementing the distributed monitoring and analysis system, and are preferably configured to support a web-based user interface providing access to measurement data. The endpoint devices may be advantageously organized into a hierarchy comprising a plurality of zones, with each of the endpoint devices belonging to at least one zone. For each zone, one of the endpoint devices may be designated as a zone leader for controlling the periodic generation of communications between selected endpoint devices that belong to subzones of that zone in the hierarchy.
摘要翻译： 公开了用于改进在基于网络的通信系统中的VoIP通信，多媒体通信或其他类型的网络业务的监视和分析的技术。 根据本发明的一个方面，基于网络的通信系统的端点设备是可配置的，以便集体实现不需要集中式测试服务器或其他集中控制器的分布式监控和分析系统。 与端点设备相关联的分布式测试单元可以用于实现分布式监控和分析系统，并且优选地被配置为支持提供对测量数据的访问的基于web的用户界面。 端点设备可以有利地被组织成包括多个区域的层次结构，其中每个端点设备属于至少一个区域。 对于每个区域，可以将端点设备中的一个指定为区域引导器，用于控制属于该层级中该区域的子区域的所选择的端点设备之间的通信的周期性生成。
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2.发明授权Root cause analysis of network performance based on exculpation or inculpation sets 有权基于排除或排除集的网络性能的根本原因分析公开(公告)号：US07924733B2
公开(公告)日：2011-04-12
申请号：US11536229
申请日：2006-09-28
申请人： Akshay Adhikari , Lorraine Denby , Colin L. Mallows , Jean Meloche , Balaji Rao
发明人： Akshay Adhikari , Lorraine Denby , Colin L. Mallows , Jean Meloche , Balaji Rao
IPC分类号： H04J1/16
CPC分类号： H04L43/00 , H04L41/0213 , H04L41/0631 , H04L41/0677 , H04L41/5003 , H04L41/5096 , H04L43/0829 , H04L43/0852 , H04L43/087 , H04L43/16
摘要： Performance problems or other conditions are analyzed in a system comprising a plurality of endpoint devices and an associated centralized or distributed controller. End-to-end measurements are obtained for respective paths through the network, for example, using communications between the endpoint devices. For a given end-to-end measurement obtained for a particular one of the paths, a value of a performance indicator for the path is determined and the performance indicator value is assigned to each of a plurality of links of the path. The determining and assigning operations are repeated for additional ones of the end-to-end measurements, the links are grouped into one or more exculpation or inculpation sets based on how many times a particular performance indicator value has been assigned to each of the links, and the one or more sets are utilized to determine, for example, the location of a performance problem in the network.
摘要翻译： 在包括多个端点设备和相关联的集中式或分布式控制器的系统中分析性能问题或其他条件。 通过网络获得针对相应路径的端到端测量，例如使用端点设备之间的通信。 对于针对特定路径获得的给定的端到端测量，确定路径的性能指示符的值，并且将性能指标值分配给路径的多个链路中的每一个。 针对附加的端到端测量重复确定和分配操作，基于特定的性能指标值被分配给每个链路多少次，将链路分组成一个或多个排除或者填充集合， 并且使用一个或多个集合来确定例如网络中的性能问题的位置。
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3.发明申请Root Cause Analysis of Network Performance Based on Exculpation or Inculpation Sets 有权基于排除或插入集的网络性能的根本原因分析公开(公告)号：US20080080376A1
公开(公告)日：2008-04-03
申请号：US11536229
申请日：2006-09-28
申请人： Akshay Adhikari , Lorraine Denby , Colin L. Mallows , Jean Meloche , Balaji Rao
发明人： Akshay Adhikari , Lorraine Denby , Colin L. Mallows , Jean Meloche , Balaji Rao
IPC分类号： H04L12/26
CPC分类号： H04L43/00 , H04L41/0213 , H04L41/0631 , H04L41/0677 , H04L41/5003 , H04L41/5096 , H04L43/0829 , H04L43/0852 , H04L43/087 , H04L43/16
摘要： Performance problems or other conditions are analyzed in a system comprising a plurality of endpoint devices and an associated centralized or distributed controller. End-to-end measurements are obtained for respective paths through the network, for example, using communications between the endpoint devices. For a given end-to-end measurement obtained for a particular one of the paths, a value of a performance indicator for the path is determined and the performance indicator value is assigned to each of a plurality of links of the path. The determining and assigning operations are repeated for additional ones of the end-to-end measurements, the links are grouped into one or more exculpation or inculpation sets based on how many times a particular performance indicator value has been assigned to each of the links, and the one or more sets are utilized to determine, for example, the location of a performance problem in the network.
摘要翻译： 在包括多个端点设备和相关联的集中式或分布式控制器的系统中分析性能问题或其他条件。 通过网络获得针对相应路径的端到端测量，例如使用端点设备之间的通信。 对于针对特定路径获得的给定的端到端测量，确定路径的性能指示符的值，并且将性能指标值分配给路径的多个链路中的每一个。 针对附加的端到端测量重复确定和分配操作，基于特定的性能指标值被分配给每个链路多少次，将链路分组成一个或多个排除或者填充集合， 并且使用一个或多个集合来确定例如网络中的性能问题的位置。
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4.发明授权Communication system endpoint device with integrated call synthesis capability 有权具有集成呼叫综合能力的通信系统端点设备公开(公告)号：US07313098B2
公开(公告)日：2007-12-25
申请号：US10261431
申请日：2002-09-30
申请人： Mark J. Bearden , Scott Vincent Bianco , Lorraine Denby , Bengi Karacali , Jean Meloche , David Thomas Stott , Shane M. Sullivan
发明人： Mark J. Bearden , Scott Vincent Bianco , Lorraine Denby , Bengi Karacali , Jean Meloche , David Thomas Stott , Shane M. Sullivan
CPC分类号： H04M3/301 , H04J3/0682 , H04L1/205 , H04L1/24 , H04L43/50 , H04L65/608 , H04L65/80 , H04M7/006
摘要： Techniques are disclosed for improved monitoring and analysis of VoIP communications, multimedia communications or other types of network traffic in a network-based communication system. In accordance with one aspect of the invention, an endpoint device of the system includes an integrated call synthesis capability. More particularly, the endpoint device is configurable into at least a first mode of operation in which the device responds to one or more commands from a testing server of the system directing the device to participate in a synthetic call or other test communication within the system, and a second mode of operation in which the device is utilizable by a system user to establish an actual communication. Other aspects of the invention relating to kernel timestamping and timestamp post-processing provide improved accuracy for measurements such as jitter, loss and delay.
摘要翻译： 公开了用于改进在基于网络的通信系统中的VoIP通信，多媒体通信或其他类型的网络业务的监视和分析的技术。 根据本发明的一个方面，系统的端点设备包括综合呼叫合成能力。 更具体地，端点设备可配置成至少第一操作模式，其中设备响应来自系统的测试服务器的一个或多个命令，该系统指示设备参与系统内的合成呼叫或其他测试通信， 以及第二操作模式，其中该设备可由系统用户利用以建立实际的通信。 与内核时间戳和时间戳后处理相关的本发明的其它方面为诸如抖动，丢失和延迟的测量提供了改善的精度。
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公开(公告)号：US07602728B2
公开(公告)日：2009-10-13
申请号：US10460700
申请日：2003-06-12
申请人： Akshay Adhikari , Lorraine Denby , Jean Meloche , Balaji Rao
发明人： Akshay Adhikari , Lorraine Denby , Jean Meloche , Balaji Rao
IPC分类号： H04L1/14
摘要： Network topology information is determined in a network-based communication system by generating communications between, for example, selected pairs of endpoint devices each associated with a network. A given one of the communications is sent from a first one of the endpoint devices to a second one of the endpoint devices and returned from the second endpoint device to the first endpoint device. Information contained in the communication as received at the first endpoint device from the second endpoint device is processed to determine network topology information characterizing at least a portion of the network.
摘要翻译： 网络拓扑信息在基于网络的通信系统中通过生成例如与网络相关联的所选择的端点设备对之间的通信来确定。 通信中的给定一个从端点设备中的第一个发送到端点设备中的第二个终端设备，并从第二终端设备返回到第一终端设备。 对来自第二端点设备的在第一端点设备接收的通信中包含的信息进行处理，以确定表征网络的至少一部分的网络拓扑信息。
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公开(公告)号：US20080069334A1
公开(公告)日：2008-03-20
申请号：US11531910
申请日：2006-09-14
申请人： Lorraine Denby , Colin L. Mallows , Jean Meloche
发明人： Lorraine Denby , Colin L. Mallows , Jean Meloche
IPC分类号： H04M3/00
CPC分类号： H04L12/2697 , H04L43/50
摘要： A distributed monitoring system comprises a plurality of agents configured for communication with at least one central server. A given one of the agents obtains measurement data, and applies a statistical test to the measurement data. Based on a result of the statistical test, the given agent determines whether or not an update needs to be sent by the agent to the central server. The agent sends the update to the central server if the determination indicates that the update should be sent.
摘要翻译： 分布式监控系统包括被配置为与至少一个中央服务器进行通信的多个代理。 给定的一个代理获得测量数据，并对测量数据应用统计测试。 基于统计测试的结果，给定代理确定代理是否需要向中央服务器发送更新。 如果确定指示应该发送更新，代理将更新发送到中央服务器。
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7.发明申请SYSTEMS AND METHODS FOR PARTITIONING END-TO-END PERFORMANCE EFFECTS USING NETWORK TOMOGRAPHY 有权使用网络计算机分析端到端性能效果的系统和方法公开(公告)号：US20090028062A1
公开(公告)日：2009-01-29
申请号：US11829429
申请日：2007-07-27
IPC分类号： H04L12/26
CPC分类号： H04L41/147 , G06Q40/00 , H04L41/0213 , H04L41/12 , H04L41/5009 , H04L41/5038 , H04L43/0829 , H04L43/0852 , H04L43/087 , H04L43/50
摘要： Systems and methods are presented for partitioning end-to-end performance effects using network tomography. In one embodiment, a method for partitioning end-to-end performance effects within a network is presented. The method includes determining a network topology between at least two test points, obtaining an unrelated approximation of edge effects between the test points, measuring end-to-end performance data between the test points corresponding to a target application, regularizing an estimate of edge effects for the target application using the unrelated approximation of edge effects, and computing the estimate of edge effects for the target application to partition the end-to-end effects.
摘要翻译： 提出了使用网络层析成像分割端到端性能效果的系统和方法。 在一个实施例中，呈现了用于分割网络内的端对端性能效果的方法。 该方法包括确定至少两个测试点之间的网络拓扑，获得测试点之间的边缘效应的无关逼近，测量与目标应用相对应的测试点之间的端到端性能数据，使边缘效应的估计正规化 对于使用边缘效应的不相关近似的目标应用程序，以及计算目标应用程序的边缘效应的估计来分割端对端效应。
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公开(公告)号：US08824313B2
公开(公告)日：2014-09-02
申请号：US11531910
申请日：2006-09-14
申请人： Lorraine Denby , Colin L. Mallows , Jean Meloche
发明人： Lorraine Denby , Colin L. Mallows , Jean Meloche
CPC分类号： H04L12/2697 , H04L43/50
摘要： A distributed monitoring system comprises a plurality of agents configured for communication with at least one central server. A given one of the agents obtains measurement data, and applies a statistical test to the measurement data. Based on a result of the statistical test, the given agent determines whether or not an update needs to be sent by the agent to the central server. The agent sends the update to the central server if the determination indicates that the update should be sent.
摘要翻译： 分布式监控系统包括被配置为与至少一个中央服务器进行通信的多个代理。 给定的一个代理获得测量数据，并对测量数据应用统计测试。 基于统计测试的结果，给定代理确定代理是否需要向中央服务器发送更新。 如果确定指示应该发送更新，代理将更新发送到中央服务器。
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9.发明授权Systems and methods for partitioning end-to-end performance effects using network tomography 有权使用网络断层扫描分割端到端性能效果的系统和方法公开(公告)号：US07821936B2
公开(公告)日：2010-10-26
申请号：US11829429
申请日：2007-07-27
CPC分类号： H04L41/147 , G06Q40/00 , H04L41/0213 , H04L41/12 , H04L41/5009 , H04L41/5038 , H04L43/0829 , H04L43/0852 , H04L43/087 , H04L43/50
摘要： Systems and methods are presented for partitioning end-to-end performance effects using network tomography. In one embodiment, a method for partitioning end-to-end performance effects within a network is presented. The method includes determining a network topology between at least two test points, obtaining an unrelated approximation of edge effects between the test points, measuring end-to-end performance data between the test points corresponding to a target application, regularizing an estimate of edge effects for the target application using the unrelated approximation of edge effects, and computing the estimate of edge effects for the target application to partition the end-to-end effects.
摘要翻译： 提出了使用网络层析成像分割端到端性能效果的系统和方法。 在一个实施例中，呈现了用于分割网络内的端对端性能效果的方法。 该方法包括确定至少两个测试点之间的网络拓扑，获得测试点之间的边缘效应的无关逼近，测量与目标应用相对应的测试点之间的端到端性能数据，使边缘效应的估计正规化 对于使用边缘效应的不相关近似的目标应用程序，以及计算目标应用程序的边缘效应的估计来分割端对端效应。
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10.发明授权公开(公告)号：US07583667B2
公开(公告)日：2009-09-01
申请号：US11014546
申请日：2004-12-16
申请人： Akshay Adhikari , Amit Agarwal , Lorraine Denby , Russell C. Jones , Rod D. Livingood , Jean Meloche , Anupam Rai , Wayne Sam , John R. Tuck, Jr.
发明人： Akshay Adhikari , Amit Agarwal , Lorraine Denby , Russell C. Jones , Rod D. Livingood , Jean Meloche , Anupam Rai , Wayne Sam , John R. Tuck, Jr.
CPC分类号： H04L45/00 , H04L12/4633 , H04L12/4675 , H04L41/0677 , H04L41/145 , H04L43/10 , H04L43/50 , H04L45/20 , H04L45/26 , H04L69/22
摘要： Techniques for determining a problem location or otherwise characterizing a network comprising a plurality of processing elements, including at least one processing element associated with performance of a packet encapsulation operation of an encapsulation protocol. The packet encapsulation operation is performed on a test packet to generate an encapsulated packet, the test packet having a time to live (TTL) value and an identifier. In conjunction with performance of the packet encapsulation operation, the TTL value and the identifier of the test packet are copied to a header of the encapsulated packet. The encapsulated packet is transmitted, and a determination is made as to whether a reply packet has been received responsive to transmission of the encapsulated packet. The reply packet, if any, is processed to obtain information utilizable in determining the problem location or otherwise characterizing the network. By way of example, these operations may be repeated, for subsequent test packets with increasing TTL values, until an amount of router hop information sufficient to determine the problem location is obtained.
摘要翻译： 用于确定问题位置或以其他方式表征包括多个处理元件的网络的技术，包括与执行封装协议的分组封装操作相关联的至少一个处理元件。 在测试分组上执行分组封装操作以生成封装分组，测试分组具有生存时间（TTL）值和标识符。 结合分组封装操作的性能，将TTL值和测试分组的标识符复制到封装分组的报头。 发送封装的分组，并且确定响应于封装分组的传输是否已经接收到应答分组。 处理回复数据包（如果有的话）以获得可用于确定问题位置或以其他方式表征网络的信息。 作为示例，对于具有增加的TTL值的后续测试分组，可以重复这些操作，直到获得足以确定问题位置的路由器跳跃信息的量。
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