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81. 发明申请

US20130067076A1 INCREMENTALLY IMPROVED AUTO-DISCOVERY OF NETWORK DEVICES 有权
标题翻译：网络设备自动发现的改进
公开(公告)号：US20130067076A1
公开(公告)日：2013-03-14
申请号：US13669117
申请日：2012-11-05
申请人： OPNET Technologies, Inc.
发明人： Krishna SIVARAMAKRISHNA IYER , James M. Shaw , Jarrold A. Stiffler
IPC分类号： G06F15/173
CPC分类号： H04L41/12
摘要： The embodiments improve the results of an auto-detection of network devices responsive to the causes of detection failures in preceding runs of the auto-detection process. The network may comprise various devices that are believed to be in the network. If a device that is believed to be in the network, but is undiscovered, the embodiments identify the device and information regarding the cause or causes of non-discovery. In response, the discovery parameters are modified, based on the causes associated with the undiscovered devices. The extent to which the discovery parameters are modified is based various criteria, such as the characterization of the network, or upon the detection of changes to the network.
摘要翻译：这些实施例响应于自动检测过程的先前运行中的检测故障的原因而改进了网络设备的自动检测的结果。网络可以包括被认为在网络中的各种设备。如果被认为在网络中但未被发现的设备，则实施例识别设备和关于非发现的原因或原因的信息。作为响应，基于与未发现的设备相关联的原因，发现参数被修改。发现参数被修改的程度基于各种标准，例如网络的表征，或者基于检测到网络的变化。

82. 发明申请

US20130036122A1 ASSESSING APPLICATION PERFORMANCE WITH AN OPERATIONAL INDEX 有权
标题翻译：评估运营指标的应用性能
公开(公告)号：US20130036122A1
公开(公告)日：2013-02-07
申请号：US13444583
申请日：2012-04-11
申请人： Alain J. COHEN , Yiping Ding
发明人： Alain J. COHEN , Yiping Ding
IPC分类号： G06F17/30 , G06F11/00
CPC分类号： G06F11/3409 , G06F2201/81 , G06F2201/865
摘要： The present invention relates to a system and method for assessing application performance and user satisfaction. In one embodiment, the system and method calculates an Operational Index (OPdex) representing user satisfaction with an application. The OPdex may be a number quantifying user satisfaction with an application, such as a web application, and system performance. The OPdex may be based on one or more measurable metrics having a range of values that may affect user satisfaction or performance of an application. The OPdex may comprise calculating the index based on a soft threshold, a hard threshold, and measurements indicating a perceived application response time. The OPdex calculation may also account for sensitivity of user satisfaction to response time. Based on the OPdex, the system and methods also provide information indicating the relationship among application response time thresholds set by the users, the user satisfaction level, and the mean response time.
摘要翻译：本发明涉及一种用于评估应用性能和用户满意度的系统和方法。在一个实施例中，系统和方法计算表示用户对应用程序满意度的操作指数（OPdex）。 OPdex可能是量化用户对应用程序的满意度的数量，例如Web应用程序和系统性能。 OPdex可以基于一个或多个可测量度量，其具有可能影响用户对应用的满意度或性能的一系列值。 OPdex可以包括基于软阈值，硬阈值和指示感知应用响应时间的测量来计算索引。 OPdex计算也可以解释用户满意度对响应时间的敏感度。基于OPdex，系统和方法还提供了指示用户设置的应用响应时间阈值，用户满意度和平均响应时间之间的关系的信息。

83. 发明授权

US08305931B2 Incremental and targeted auto-discovery of network devices 有权
标题翻译：网络设备的增量和有针对性的自动发现
公开(公告)号：US08305931B2
公开(公告)日：2012-11-06
申请号：US12544317
申请日：2009-08-20
申请人： Krishnan Sivaramakrishna Iyer , James Mark Shaw , Jerrold A. Stiffler
发明人： Krishnan Sivaramakrishna Iyer , James Mark Shaw , Jerrold A. Stiffler
IPC分类号： H04L12/28
CPC分类号： H04L41/12
摘要： A method and/or system is configured to improve the results of an auto-detection of network devices based on the causes of detection failures in preceding runs of the auto-detection process. As each device that is believed to be in the network is found to be undiscovered, the identification of the device and information regarding the cause(s) of non-discovery are stored. Prior to the next auto-detection run, one or more of the discovery parameters are modified, based on the causes associated with the undiscovered devices. The extent to which the discovery parameters are modified is preferably based on the apparent stability of the network, or upon the detection of changes to the network.
摘要翻译：一种方法和/或系统被配置为基于自动检测过程的先前运行中的检测失败的原因来改进网络设备的自动检测结果。被认为在网络中的每个设备被发现是未被发现的，存储设备的识别和关于非发现的原因的信息。在下一次自动检测运行之前，将根据与未发现的设备相关联的原因修改一个或多个发现参数。发现参数被修改的程度优选地基于网络的表观稳定性，或者基于检测到网络的改变。

84. 发明申请

US20120246307A1 ANALYSIS OF ACTIVITY OF DEVICES IN A NETWORK THAT EMPLOY TRANSLATED NETWORK ADDRESSES 有权
标题翻译：网络转换网络中设备的活动分析
公开(公告)号：US20120246307A1
公开(公告)日：2012-09-27
申请号：US13487863
申请日：2012-06-04
申请人： Patrick J. MALLOY , John Wilson STROHM , Gehl Ryan , Antoine DUNN
发明人： Patrick J. MALLOY , John Wilson STROHM , Gehl Ryan , Antoine DUNN
IPC分类号： G06F15/173
CPC分类号： H04L29/12028 , H04L41/22 , H04L61/103 , H04L67/02
摘要： The embodiments provide for analyzing activity of devices in a network. Activity from a device may result from multiple devices translated to a common address, such as a public internet protocol (IP) address. In some embodiments, the activity from a network or device is analyzed to identify if multiple devices communicate via translated addresses from the common address. The devices may be identified based on various criteria, such as a unique identifier, protocol header information, or a media access control (or “MAC”) address. Other criteria may also be employed. Each device that is mapped to common address is then remapped so that each device has its own address. The activity data is then modified so that each device is correlated with its unique address. Alternatively, a new activity data file may be generated so that the activity of each device is indicated.
摘要翻译：这些实施例提供用于分析网络中的设备的活动。来自设备的活动可能由多个设备转换为公共地址（如公共网络协议（IP））地址而产生。在一些实施例中，分析来自网络或设备的活动以识别多个设备是否通过来自公共地址的翻译地址进行通信。可以基于诸如唯一标识符，协议头信息或媒体访问控制（或“MAC”）地址的各种标准来标识设备。也可以采用其他标准。然后将映射到公共地址的每个设备重新映射，以使每个设备都有自己的地址。然后修改活动数据，使每个设备与其唯一地址相关联。或者，可以生成新的活动数据文件，使得指示每个设备的活动。

85. 发明授权

US08165038B2 Network physical connection inference for IP tunnels 有权
标题翻译： IP隧道的网络物理连接推断
公开(公告)号：US08165038B2
公开(公告)日：2012-04-24
申请号：US12192103
申请日：2008-08-14
申请人： James Mark Shaw , Raghavendra B. Uppalli
发明人： James Mark Shaw , Raghavendra B. Uppalli
IPC分类号： H04L12/28
CPC分类号： H04L12/4633 , H04L45/04 , H04L45/10
摘要： The physical connection corresponding to IP tunnels in a network are found by tracing through the device configuration and routing tables at the routers in the network to determine the outbound interface associated with each tunnel endpoint, and then inferring a likely return interface associated with the opposite tunnel endpoint. Having determined the physical devices at the source and destination of each tunnel, the physical path between these source and destination devices is traced from the source toward the destination until the path is terminated at the destination device, or at an interface to an external network. If the path ends at an external network, the path is traced from the destination device toward the source device until a corresponding interface to the external network is reached.
摘要翻译：通过在网络中的路由器上跟踪设备配置和路由表来确定与网络中IP隧道对应的物理连接，以确定与每个隧道端点相关联的出站接口，然后推断与相对隧道相关联的可能的返回接口端点。在确定每个隧道的源和目的地的物理设备之后，这些源设备和目的设备之间的物理路径从源向目的地追踪，直到路径终止于目标设备，或在外部网络的接口处。如果路径在外部网络中结束，路径将从目标设备追溯到源设备，直到到达外部网络的相应接口。

86. 发明授权

US08144627B2 Inferring connectivity in the presence of conflicting network data 有权
标题翻译：在存在冲突的网络数据的情况下推断连接
公开(公告)号：US08144627B2
公开(公告)日：2012-03-27
申请号：US12498786
申请日：2009-07-07
申请人： Raghavendra B. Uppalli , James Mark Shaw
发明人： Raghavendra B. Uppalli , James Mark Shaw
IPC分类号： H04L12/28
CPC分类号： G06N5/04 , H04L41/12 , H04Q3/0062 , Y02D30/30
摘要： The connectivity information provided by a variety of inference engines is integrated to provide a set of inferred links within a network. A consolidation is performed among inference engines that operate at a base level of connectivity detail to create a model of the network at this base level. The connectivity information provided by inference engines at each subsequent higher level of connectivity abstraction is then overlaid on the base level connectivity. By separately consolidating the connectivity information at each level of abstraction, the rules for dealing with conflicts can be simplified and/or better focused to resolve the conflict. By assuming that the more detailed lower level information is likely to be more accurate, rules can be developed to modify the connectivity models produced by the higher level techniques to conform to the lower level connectivity details while still maintaining the integrity of the higher level connectivity models.
摘要翻译：由各种推理机提供的连接信息被集成以在网络内提供一组推断的链接。推理引擎之间进行合并，这些推理引擎在基础级别的连接细节下运行，以在该基础级别创建网络模型。然后在每个后续更高级别的连接抽象时由推理引擎提供的连接信息覆盖在基本级别的连接性上。通过在每个抽象级别单独合并连接信息，可以简化和/或更好地集中解决冲突的规则来解决冲突。通过假设更详细的较低级别信息可能更准确，可以开发规则来修改由较高级别技术产生的连接性模型，以符合较低级别的连接细节，同时仍保持较高级别连接模型的完整性。

87. 发明授权

US08130759B2 Routing validation 有权
标题翻译：路由验证
公开(公告)号：US08130759B2
公开(公告)日：2012-03-06
申请号：US11494441
申请日：2006-07-27
申请人： Alain J. Cohen , Pradeep K. Singh , Vinod Jeyachandran , Nitin Gupta
发明人： Alain J. Cohen , Pradeep K. Singh , Vinod Jeyachandran , Nitin Gupta
IPC分类号： H04L12/28
CPC分类号： H04L45/28 , H04L41/0631 , H04L41/08 , H04L41/0866 , H04L41/14 , H04L41/145 , H04L45/02 , H04L45/124
摘要： A simulator simulates routing system protocols to build routing tables corresponding to a modeled network, and a comparator compares the routing tables in the actual network to these simulator-created routing tables. Because the modeled system represents a fault-free version of the actual system, and assuming that the modeled routing system protocols are representative of the algorithms used in the actual routers, these simulator-produced routing tables will represent the ‘ideal’ routing tables that should be present in the routers of the actual network. By querying each router in the actual network for its routing table and comparing each routing table to the corresponding simulator-produced routing table, any differences from the ‘ideal’ can be identified.
摘要翻译：模拟器模拟路由系统协议以构建与建模网络相对应的路由表，并且比较器将实际网络中的路由表与这些模拟器创建的路由表进行比较。因为建模的系统代表了实际系统的无故障版本，并且假设建模的路由系统协议代表实际路由器中使用的算法，则这些模拟器生成的路由表将表示应该应用的“理想”路由表存在于实际网络的路由器中。通过查询实际网络中的每个路由器的路由表，并将每个路由表与相应的模拟器生成的路由表进行比较，可以识别与“ideal”的任何差异。

88. 发明授权

US07894369B2 Network physical connection inference for IP tunnels 有权
标题翻译： IP隧道的网络物理连接推断
公开(公告)号：US07894369B2
公开(公告)日：2011-02-22
申请号：US11506648
申请日：2006-08-18
申请人： James Mark Shaw
发明人： James Mark Shaw
IPC分类号： H04L12/28
CPC分类号： H04L12/4633 , H04L45/04 , H04L45/10
摘要： The physical connection corresponding to IP tunnels in a network are found by tracing through the device configuration and routing tables at the routers in the network to determine the outbound interface associated with each tunnel endpoint, and then inferring a likely return interface associated with the opposite tunnel endpoint. Depending upon the particular configurations, a variety of tests can be applied to validate the inference. Patricia trees are preferably used to store and process the configuration data for efficient tracing through the routing tables at each router.
摘要翻译：通过在网络中的路由器上跟踪设备配置和路由表来确定与网络中IP隧道对应的物理连接，以确定与每个隧道端点相关联的出站接口，然后推断与相对隧道相关联的可能的返回接口端点。根据具体的配置，可以应用各种测试来验证推理。 Patricia树最好用于存储和处理配置数据，以便通过每个路由器上的路由表进行有效的跟踪。

89. 发明授权

US07843840B2 Traffic independent survivability analysis 有权
标题翻译：交通独立生存能力分析
公开(公告)号：US07843840B2
公开(公告)日：2010-11-30
申请号：US12195393
申请日：2008-08-20
申请人： Vanko Vankov , Arun Pasupathy , Vinod Jeyachandran , Pradeep K. Singh , Alain J. Cohen , Yonghuan Cao
发明人： Vanko Vankov , Arun Pasupathy , Vinod Jeyachandran , Pradeep K. Singh , Alain J. Cohen , Yonghuan Cao
IPC分类号： G06F11/30
CPC分类号： H04L43/50
摘要： First-order effects of hypothesized fault conditions are determined by propagating discrete test packets between select nodes and noting the change of path, if any, taken by the test packet under each condition relative to the fault-free path. Tools are provided to create classes of node pairs of interest, and test packets are created only for select classes. The network is analyzed to identify fault conditions that are likely to impact system performance, and only these fault conditions are simulated. By providing a methodology for selecting classes of node pairs to test, and prioritizing the faults to simulate, a first-order survivability analysis of large networks can be performed efficiently and effectively. The efficiency of this technique is also enhanced by providing test packets that are representative of a wide range of possible source-destination combinations, and by evaluating only the source-destination combinations that may be directly affected by each fault condition.
摘要翻译：通过在选择节点之间传播离散的测试包，并注意到每个条件下相对于无故障路径，由测试包采取的路径（如果有的话）的变化来确定假设故障条件的一阶影响。提供工具来创建感兴趣的节点对类，并且只为选择类创建测试包。分析网络以识别可能影响系统性能的故障状况，并且仅模拟这些故障条件。通过提供一种选择要测试的节点对的类别并对故障进行优先级模拟的方法，可以有效和高效地执行大型网络的一阶生存性分析。通过提供表示广泛范围的可能的源 - 目的地组合的测试分组以及通过仅评估可能由每个故障状况直接影响的源 - 目的地组合来增强该技术的效率。

90. 发明授权

US07729240B1 Method and system for identifying duplicate packets in flow-based network monitoring system 有权
标题翻译：基于流的网络监控系统识别重复数据包的方法和系统
公开(公告)号：US07729240B1
公开(公告)日：2010-06-01
申请号：US11173752
申请日：2005-06-30
申请人： Mark E. Crane , Tomas J. Pavel , Wei Yue
发明人： Mark E. Crane , Tomas J. Pavel , Wei Yue
IPC分类号： H04L1/00 , H04L12/56 , H04J3/24 , G06F15/16
CPC分类号： H04L43/0894 , H04L41/0233
摘要： A network monitoring device configured to collect a new packet from one or more observation points of a network and to compare the new packet with a list of a number of received packets based on a packet arrival rate and to identify a duplicate packet. In particular, the number of received packets in the list is equivalent to a number of packets received within a time period, i.e. the packet arrival rate. Stated differently, the network monitoring device is to compare the new packets with received packets stored in a queue of a buffer and wherein the queue has a size based on a packet arrival rate collected at one or more observation points. In addition, the time period is further adjusted according to a threshold value. The threshold value is a variable parameter that can be adjusted to compensate for different network deployment. In one embodiment, the threshold value is a time value that is not more than a transmission time of a TCP retransmitted packet.
摘要翻译：一种网络监视装置，被配置为从网络的一个或多个观察点收集新的分组，并且基于分组到达速率将新的分组与接收到的分组的数目的列表进行比较，并且识别重复的分组。特别地，列表中接收到的分组的数量等于在一段时间内接收到的分组数，即分组到达速率。换句话说，网络监控设备将新的分组与存储在缓冲区队列中的接收到的分组进行比较，其中队列具有基于在一个或多个观测点收集的分组到达速率的大小。此外，根据阈值进一步调整时间段。阈值是可以调整以补偿不同网络部署的可变参数。在一个实施例中，阈值是不大于TCP重传分组的传输时间的时间值。

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