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公开(公告)号：US09106353B2
公开(公告)日：2015-08-11
申请号：US13714174
申请日：2012-12-13
发明人： Canning Hsueh , Michael Stevens , Bob Samway
CPC分类号： H04J3/0667 , H04J3/0635 , H04J3/0682 , H04L7/0012 , H04L12/4633 , H04L63/04 , H04L63/0428
摘要： The invention relates to time synchronization between network testing elements in distributed network monitoring and testing systems, and provides a condensed PTP process wherein the number of timing messages exchanged between master and slave in one iteration of the time synchronization process is reduced. Furthermore, timing messages are encrypted to provide for a more secure synchronization process. One aspect of the method provides for an automatic detection and adaptive handling of protocol stacks of received timing packets.
摘要翻译： 本发明涉及分布式网络监控和测试系统中的网络测试元件之间的时间同步，并且提供了一种精简的PTP过程，其中在时间同步过程的一次迭代中在主从设备之间交换的定时消息的数量减少。 此外，定时消息被加密以提供更安全的同步过程。 该方法的一个方面提供了对接收的定时分组的协议栈的自动检测和自适应处理。
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公开(公告)号：US09397895B2
公开(公告)日：2016-07-19
申请号：US13714036
申请日：2012-12-13
发明人： John M. Page , Samuel M. Bauer , Canning Hsueh , Michael Stevens
CPC分类号： H04L41/12 , H04L45/20 , H04L61/6022 , H04L67/12 , Y02D30/30
摘要： A method of providing topology information about a network to a topology manager is disclosed. The network includes a plurality of sensors each having a sensor ID, and the method includes performing the following steps at each of the plurality of sensors: receiving a stream of packets and identifying a topology trace packet in the stream of packets, wherein the topology trace packet has a destination address and an ID of a previous sensor, including the sensor ID in the topology trace packet, sending the topology trace packet to the destination address, forming a report message so as to include the sensor ID, the previous sensor ID, sending the report to the topology manager; and, providing network addresses of adjacent nodes to the topology manager.
摘要翻译： 公开了一种向拓扑管理器提供关于网络的拓扑信息的方法。 网络包括多个传感器，每个传感器具有传感器ID，并且该方法包括在多个传感器的每个传感器处执行以下步骤：接收分组流并且识别分组流中的拓扑跟踪分组，其中拓扑跟踪 分组具有目的地地址和先前传感器的ID，包括拓扑跟踪分组中的传感器ID，将拓扑跟踪分组发送到目的地地址，形成报告消息，以便包括传感器ID，先前的传感器ID， 将报告发送给拓扑管理器; 并向拓扑管理器提供相邻节点的网络地址。
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公开(公告)号：US09141506B2
公开(公告)日：2015-09-22
申请号：US13768846
申请日：2013-02-15
发明人： Michael Stevens , Robert D'Eletto
CPC分类号： H04L43/04 , G06F11/3065 , H04L43/028 , H04L43/0894 , H04L43/12 , H04L43/50 , H04L63/1416
摘要： A method of monitoring a network with a test device connected to the network includes monitoring a plurality of packets which pass through the test device, comparing a predefined field of each of the plurality of packets to a predefined pattern so as to identify signature packets, evaluating whether the signature packets satisfy a predefined condition, and, if the predefined condition is satisfied, sending a notification to a user. A system implementing the method is provided.
摘要翻译： 一种利用连接到网络的测试设备监控网络的方法包括监视通过测试设备的多个分组，将多个分组中的每个分组的预定义字段与预定义模式进行比较，以便识别签名分组，评估 签名包是否满足预定条件，并且如果满足预定条件，则向用户发送通知。 提供了一种实现该方法的系统。
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公开(公告)号：US20160191184A1
公开(公告)日：2016-06-30
申请号：US14822217
申请日：2015-08-10
发明人： Canning HSUEH , Michael Stevens , Bob Samway
CPC分类号： H04J3/0667 , H04J3/0635 , H04J3/0682 , H04L7/0012 , H04L12/4633 , H04L63/04 , H04L63/0428
摘要： The invention relates to time synchronization between network testing elements in distributed network monitoring and testing systems, and provides a condensed PTP process wherein the number of timing messages exchanged between master and slave in one iteration of the time synchronization process is reduced. Furthermore, timing messages are encrypted to provide for a more secure synchronization process. One aspect of the method provides for an automatic detection and adaptive handling of protocol stacks of received timing packets.
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公开(公告)号：US09106520B2
公开(公告)日：2015-08-11
申请号：US14194177
申请日：2014-02-28
发明人： Alistair Scott , Samuel M. Bauer , Michael Stevens
CPC分类号： H04L43/0829 , H04L43/022 , H04L43/026 , H04L43/028 , H04L43/062 , H04L43/106 , H04L43/12 , H04L43/18 , H04L43/50 , H04L2212/00
摘要： A method of monitoring packet traffic is provided. The method includes: at a first access point, capturing portions of traffic packets passing therethrough separated by time intervals; encapsulating the portions of traffic packets thereby forming encapsulated packets and adding timestamps to the encapsulated packets so as to preserve the portions of traffic packets and information related to the time intervals; transmitting the encapsulated packets over a network; decapsulating the encapsulated packets so as to obtain replay packets and the capture timestamps, wherein the replay packets include the portions of the traffic packets; and, transmitting the replay packets separated by the time intervals, wherein the timestamps are used to reproduce the time intervals so as to imitate the traffic packets passing through the first access point.
摘要翻译： 提供监视分组流量的方法。 该方法包括：在第一接入点，捕获通过时间间隔分隔的业务分组的部分; 封装业务数据包的部分，从而形成封装的数据包，并为封装的数据包添加时间戳，以保留业务数据包的部分和与时间间隔相关的信息; 通过网络传输封装的分组; 对封装的分组进行解封装，以获得重播分组和捕获时间戳，其中重播分组包括业务分组的部分; 以及发送由所述时间间隔分离的所述重播包，其中所述时间戳被用于再现所述时间间隔，以便模拟通过所述第一接入点的业务分组。
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