公开(公告)号：US09065770B2

公开(公告)日：2015-06-23

申请号：US13228291

申请日：2011-09-08

申请人： Earl Chew ,  Michael Hutchison ,  Noah Gintis

发明人： Earl Chew ,  Michael Hutchison ,  Noah Gintis

IPC分类号： H04L12/26 ,  H04L12/24

CPC分类号： H04L43/50 ,  H04L41/20 ,  H04L41/22 ,  H04L43/026 ,  H04L43/028

摘要： An impairment unit, method, and machine readable storage media for emulating network impairments. A first network interface may receive network traffic including a plurality of received packets. A classifier may determine an impairment class of each received packet based on test information contained within a payload portion of each received packet, the impairment class of each received packet being one of a plurality of impairment classes, each impairment class uniquely associated with a corresponding one of a plurality of impairment profiles. An impairment engine may impair each of the plurality of impairment classes in accordance with the corresponding impairment profile to provide impaired network traffic. A second network interface may transmit the impaired network traffic to the network.

摘要翻译： 用于模拟网络损伤的损伤单元，方法和机器可读存储介质。 第一网络接口可以接收包括多个接收到的分组的网络业务。 分类器可以基于包含在每个接收到的分组的有效载荷部分内的测试信息来确定每个接收到的分组的损害等级，每个接收到的分组的损伤类别是多个损伤类别中的一个，每个损伤类别与相应的一个唯一相关联 的多个损伤曲线。 损害引擎可以根据相应的损伤简档削弱多个损伤等级中的每一个，以提供受损的网络流量。 第二网络接口可以将受损的网络业务传输到网络。

公开(公告)号：US20130064095A1

公开(公告)日：2013-03-14

申请号：US13228291

申请日：2011-09-08

申请人： Earl Chew ,  Michael Hutchison ,  Noah Gintis

发明人： Earl Chew ,  Michael Hutchison ,  Noah Gintis

IPC分类号： H04L12/26

CPC分类号： H04L43/50 ,  H04L41/20 ,  H04L41/22 ,  H04L43/026 ,  H04L43/028

摘要： An impairment unit, method, and machine readable storage media for emulating network impairments. A first network interface may receive network traffic including a plurality of received packets. A classifier may determine an impairment class of each received packet based on test information contained within a payload portion of each received packet, the impairment class of each received packet being one of a plurality of impairment classes, each impairment class uniquely associated with a corresponding one of a plurality of impairment profiles. An impairment engine may impair each of the plurality of impairment classes in accordance with the corresponding impairment profile to provide impaired network traffic. A second network interface may transmit the impaired network traffic to the network.

摘要翻译： 用于模拟网络损伤的损伤单元，方法和机器可读存储介质。 第一网络接口可以接收包括多个接收到的分组的网络业务。 分类器可以基于包含在每个接收到的分组的有效载荷部分内的测试信息来确定每个接收到的分组的损害等级，每个接收到的分组的损伤类别是多个损伤类别中的一个，每个损伤类别与相应的一个唯一相关联 的多个损伤曲线。 损害引擎可以根据相应的损伤简档削弱多个损伤等级中的每一个，以提供受损的网络流量。 第二网络接口可以将受损的网络业务传输到网络。

公开(公告)号：US08832309B2

公开(公告)日：2014-09-09

申请号：US13517538

申请日：2012-06-13

申请人： Noah Gintis ,  Matthew R. Bergeron

发明人： Noah Gintis ,  Matthew R. Bergeron

IPC分类号： G06F15/16

CPC分类号： H04L43/50

摘要： Methods, systems, and computer readable media for generation of sequence numbers for insertion into a data stream are disclosed. According to one aspect, low-overhead sequence number generation includes reading a stored set of coefficients and using them to calculate a value for a sequence number according to an equation for calculating a sequence number value, but not changing the values of the stored set of coefficients during generation of the sequence numbers. According to another aspect, a sequence number generation method is selected from multiple available methods based on a desired pattern of sequence numbers and used to generate sequence numbers that are included in a data stream. According to yet another aspect, sequence numbers are calculated using multiple inputs, each input being a counter output or a value referenced by a counter output.

摘要翻译： 公开了用于生成用于插入数据流的序列号的方法，系统和计算机可读介质。 根据一个方面，低开销序列号生成包括读取存储的一组系数并使用它们根据用于计算序列号值的等式来计算序列号的值，但是不改变所存储的组的值 产生序列号期间的系数。 根据另一方面，从多个可用方法中选择序列号生成方法，该方法基于序列号的期望模式，并用于生成包含在数据流中的序列号。 根据另一方面，使用多个输入来计算序列号，每个输入是计数器输出或由计数器输出引用的值。

公开(公告)号：US20110069622A1

公开(公告)日：2011-03-24

申请号：US12564851

申请日：2009-09-22

申请人： Noah Gintis ,  Vinod Joseph

发明人： Noah Gintis ,  Vinod Joseph

IPC分类号： H04L12/26

CPC分类号： H04L43/50 ,  H04L41/145 ,  H04L41/22

摘要： There is disclosed apparatus and processes for generating simulated network test traffic from a stored test traffic definition. A network test system or a user may select arbitrary ways to group flows of test traffic into streams, and to modify these streams before and during transmission of the test traffic by network test equipment.

摘要翻译： 公开了用于从存储的测试流量定义产生模拟网络测试流量的装置和过程。 网络测试系统或用户可以选择任意方式将测试业务流分组成流，并在网络测试设备传输测试业务之前和期间修改这些流。

公开(公告)号：US08773984B2

公开(公告)日：2014-07-08

申请号：US13556028

申请日：2012-07-23

申请人： Bruce Bockwoldt ,  John Dalmau ,  Gerald Pepper ,  Noah Gintis ,  Bryan Rittmeyer

发明人： Bruce Bockwoldt ,  John Dalmau ,  Gerald Pepper ,  Noah Gintis ,  Bryan Rittmeyer

IPC分类号： G01R31/08 ,  H04L12/26

CPC分类号： H04L12/2697 ,  H04L43/067 ,  H04L43/0876 ,  H04L43/16 ,  H04L43/50

摘要： A method and system for measuring a convergence time of a network. Test traffic including a plurality of packet groups may be transmitted and received via the network. The network may be instructed to redirect packets belonging to a selected packet group from a first port of the network to a second port of the network. A first test port unit coupled to the first port may determine an arrival rate for the selected packet group and store a below threshold timestamp when the arrival rate first falls below a predetermined threshold rate. A second test port unit coupled to the second port may determine an arrival rate for the selected packet group and store an above threshold timestamp when the arrival rate first equals or exceeds the predetermined threshold rate. The convergence time may be determined based on the below threshold timestamp and the above threshold timestamp.

摘要翻译： 一种用于测量网络收敛时间的方法和系统。 可以经由网络发送和接收包括多个分组组的测试业务。 可以指示网络将属于所选分组组的分组从网络的第一端口重定向到网络的第二端口。 耦合到第一端口的第一测试端口单元可以确定所选分组组的到达速率，并且当到达速率首先下降到低于预定阈值速率时存储低于阈值时间戳。 耦合到第二端口的第二测试端口单元可以确定所选分组组的到达速率，并且当到达速率首先等于或超过预定阈值速率时存储上述阈值时间戳。 可以基于以下阈值时间戳和上述阈值时间戳来确定收敛时间。

公开(公告)号：US08588082B2

公开(公告)日：2013-11-19

申请号：US12565412

申请日：2009-09-23

申请人： Noah Gintis ,  Alok Srivastava ,  Victor Alston ,  Dean Lee

发明人： Noah Gintis ,  Alok Srivastava ,  Victor Alston ,  Dean Lee

IPC分类号： H04J1/16

CPC分类号： H04L43/50

摘要： There is disclosed a system and method for implementing a control plane/data plane test to evaluate the performance of a device under test upon the occurrence of a critical event. The method may be performed by a network testing system.

摘要翻译： 公开了一种用于实现控制平面/数据平面测试以在发生关键事件时评估被测设备的性能的系统和方法。 该方法可以由网络测试系统执行。

公开(公告)号：US08537839B2

公开(公告)日：2013-09-17

申请号：US12871711

申请日：2010-08-30

申请人： Noah Gintis ,  Alok Srivistava ,  Victor Alston

发明人： Noah Gintis ,  Alok Srivistava ,  Victor Alston

IPC分类号： H04L12/28 ,  H04L12/56 ,  H04L29/06

CPC分类号： H04L45/00 ,  H04L29/06 ,  H04L43/50 ,  H04L45/50

摘要： There is disclosed a port unit and methods for testing a network. The port unit may include a traffic generator, traffic receiver, and a port processor. The traffic generator may include a memory that stores data defining a plurality of packet streams. The port processor may store label tracking data associating a plurality of label condition sets with one or more respective locations within the traffic generator memory. When a control packet associating a MPLS label with a specific label condition set is received via the traffic receiver, the port processor may store the MPLS label in one or more traffic generator memory locations associated with the specific label condition set in accordance with the stored label tracking data.

摘要翻译： 公开了用于测试网络的端口单元和方法。 端口单元可以包括业务发生器，业务接收器和端口处理器。 业务生成器可以包括存储定义多个分组流的数据的存储器。 端口处理器可以存储将多个标签条件集合与业务生成器存储器内的一个或多个相应位置相关联的标签跟踪数据。 当通过业务接收器接收到将MPLS标签与特定标签条件相关联的控制分组时，端口处理器可以将MPLS标签存储在与根据所存储的标签设置的特定标签条件相关联的一个或多个业务生成器存储器位置中 跟踪数据。

公开(公告)号：US20130064125A1

公开(公告)日：2013-03-14

申请号：US13672335

申请日：2012-11-08

申请人： Noah Gintis ,  Anca Suciu

发明人： Noah Gintis ,  Anca Suciu

IPC分类号： H04L12/26

CPC分类号： H04L43/50 ,  H04L43/026 ,  H04L43/04 ,  Y02D50/30

摘要： There are disclosed apparatus and methods for testing a network. An apparatus for testing a network may include first and second memory banks configured to alternate between being active and inactive in a complementary manner. A traffic receiver may receive traffic comprising a plurality of packets from the network, accumulate traffic statistics, store the accumulated traffic statistics in the active memory bank of the first and second memory banks, and copy contents of the first memory bank, when inactive, to a third memory bank, and copy contents of the second memory bank, when inactive, to a fourth memory bank. A port processor may aggregate at least selected traffic statistics stored in the third memory bank and the fourth memory bank.

摘要翻译： 公开了用于测试网络的装置和方法。 用于测试网络的装置可以包括配置为以互补方式在活动和非活动之间交替的第一和第二存储器组。 流量接收器可以从网络接收包括多个分组的流量，累积流量统计信息，将累积的流量统计信息存储在第一和第二存储体的活动存储体中，并且当不活动时将第一存储体的内容复制到 第三存储器组，并且当不活动时将第二存储体的内容复制到第四存储体。 端口处理器可以聚合存储在第三存储体和第四存储体中的至少所选的流量统计。

公开(公告)号：US20120078566A1

公开(公告)日：2012-03-29

申请号：US12889271

申请日：2010-09-23

申请人： Noah Gintis ,  Alok Srivastava ,  Victor Alston

发明人： Noah Gintis ,  Alok Srivastava ,  Victor Alston

IPC分类号： G06F19/00

CPC分类号： H04L41/0866 ,  H04L41/22 ,  H04L41/5038 ,  H04L43/0829 ,  H04L43/0835 ,  H04L43/0841 ,  H04L43/0858 ,  H04L43/0864 ,  H04L43/087 ,  H04L43/50

摘要： There is disclosed a system and method for network test conflict checking. The method may be performed by a network testing system and may be implemented as software. The method may include receiving user selected test features and user selected hardware for a network test. When receiving user selected features, incompatible features are made unselectable by reference to a feature database. A compatibility check is performed by referring to a hardware database and a feature database. Suggestive corrective changes may be provided to a user or automatically made to the selected features and/or selected hardware. The network test is written to hardware when the compatibility test is successful.

摘要翻译： 公开了一种用于网络测试冲突检查的系统和方法。 该方法可以由网络测试系统执行并且可以被实现为软件。 该方法可以包括接收用户选择的测试特征和用于网络测试的用户选择的硬件。 当接收到用户选择的功能时，通过参考功能数据库，使不兼容的功能不可选。 通过参考硬件数据库和特征数据库来执行兼容性检查。 可以向用户提供建议性的校正改变，或者自动地对所选择的特征和/或选定的硬件进行修改。 当兼容性测试成功时，网络测试将写入硬件。

公开(公告)号：US20140126387A1

公开(公告)日：2014-05-08

申请号：US13668090

申请日：2012-11-02

申请人： Noah Gintis

发明人： Noah Gintis

IPC分类号： H04L12/26

CPC分类号： H04L43/045 ,  H04L41/22 ,  H04L43/00 ,  H04L43/04 ,  H04L43/50

摘要： A method for testing a network and a test manager for a network test system are disclosed. The method for testing a network may including displaying (1) a graphical user interface including a graphical representation of endpoints available for selection as endpoints of traffic to be generated during a test session and (2) a tabular list describing selected endpoints. Source endpoints for the traffic may be selected and the selected source endpoints may be designated on the graphical representation of endpoints and described in the tabular list. Traffic from the selected source endpoints to the selected destination endpoints may be generated for transmission via the network.

摘要翻译： 公开了一种用于测试网络和网络测试系统的测试管理器的方法。 用于测试网络的方法可以包括显示（1）包括可用于选择的端点的图形表示的图形用户界面作为在测试会话期间生成的流量的端点，以及（2）描述所选择的端点的表格列表。 可以选择流量的源端点，并且可以在端点的图形表示上指定所选择的源端点，并在表格列表中描述。 可以生成从所选源端点到所选目的地端点的业务，用于经由网络传输。