公开(公告)号：US06766367B1

公开(公告)日：2004-07-20

申请号：US09500405

申请日：2000-02-08

Applicant: David James Stevenson ,  Andrew Hunter Gray ,  Robert James Duncan ,  Alastair Hugh Chisholm ,  Vanessa Serra ,  Colin Tinto

Inventor： David James Stevenson ,  Andrew Hunter Gray ,  Robert James Duncan ,  Alastair Hugh Chisholm ,  Vanessa Serra ,  Colin Tinto

IPC: G06F15173

CPC classification number: H04L41/0213

Abstract: A method for fetching sparsely indexed MIB tables for a managed network device using an approximation operation, such as a GetNext SNMP operation, comprises sending a plurality of operations in a first data packet at least one of the plurality of approximation operations specifying a speculative approximation. By using speculative approximations of index values of data to be fetched, it is possible to retrieve MIB table data more quickly and efficiently.

Abstract translation: 使用诸如GetNext SNMP操作之类的近似操作来获取用于托管网络设备的稀疏索引的MIB表的方法包括：在第一数据分组中发送指定推测近似的多个近似运算中的至少一个的多个操作。 通过使用要提取的数据的索引值的推测近似值，可以更快速有效地检索MIB表数据。

公开(公告)号：US06978302B1

公开(公告)日：2005-12-20

申请号：US09691649

申请日：2000-10-17

Applicant: Alastair Hugh Chisholm ,  David James Stevenson ,  Robert James Duncan ,  Ronan François Daniel Grandin ,  Neil William Gray

Inventor： Alastair Hugh Chisholm ,  David James Stevenson ,  Robert James Duncan ,  Ronan François Daniel Grandin ,  Neil William Gray

IPC: H04L12/24 ,  H04Q3/00 ,  G06F15/173

CPC classification number: H04Q3/0062 ,  H04L41/0213 ,  H04L41/046 ,  H04L41/0631

Abstract: A network management apparatus and method for identifying an event which is indicative of the underlying cause of more than one of a plurality of events detected by a network management station on a network is described in which the management station has knowledge of the topology of the network. Using the topology of the network, the apparatus and method considers the location of the network device causing each event in the plurality of events, and determines as the causal event, the event which has occurred at a location closest to the network management station. The method is preferably implemented in the form of a computer program.

Abstract translation: 描述了一种网络管理装置和方法，用于识别表示由网络上的网络管理站检测到的多个事件中的多于一个的基本原因的事件，其中管理站具有网络拓扑知识 。 使用网络的拓扑结构，该装置和方法考虑了在多个事件中导致每个事件的网络设备的位置，并且确定在最靠近网络管理站的位置发生的事件是因果事件。 该方法优选以计算机程序的形式实现。

公开(公告)号：US06633230B2

公开(公告)日：2003-10-14

申请号：US09897266

申请日：2001-07-02

Applicant: Ronan François Daniel Grandin ,  David James Stevenson ,  Andrew Hunter Gray ,  Neil William Gray

Inventor： Ronan François Daniel Grandin ,  David James Stevenson ,  Andrew Hunter Gray ,  Neil William Gray

IPC: G08B2900

CPC classification number: H04Q3/0087 ,  H04L43/16

Abstract: A network management apparatus and method for determining an optimum threshold value for a monitored characteristic of a network is described. The optimum threshold value is determined by counting a number of previously received events generated from values for a monitored characteristic which were above or below an existing threshold value for the monitored characteristic, and determining the optimum threshold value in dependence on the counted number. An optimum threshold value is provided, which is tailored to suit the network concerned.

Abstract translation: 描述了一种用于确定网络的被监测特性的最佳阈值的网络管理装置和方法。 通过对从监视特性的值以上产生的先前接收到的事件的数量进行计数来确定最佳阈值，并且根据所计数的数量确定最佳阈值。 提供了一个最适合的阈值，适合于相关网络。

公开(公告)号：US07746860B2

公开(公告)日：2010-06-29

申请号：US11192772

申请日：2005-07-29

Applicant: Jonathan Gilbert Gordon Tams ,  David James Stevenson ,  Iain Hogg

Inventor： Jonathan Gilbert Gordon Tams ,  David James Stevenson ,  Iain Hogg

IPC: H04L12/28 ,  H04L12/56

CPC classification number: H04L41/00 ,  H04L29/12339 ,  H04L41/0213 ,  H04L43/50 ,  H04L47/10 ,  H04L61/2503

Abstract: When testing network management applications, it is desirable to show that they will work with large or very large networks, to determine the upper bounds of the applications capabilities, and improvements which might increase the upper bounds. A method of testing a network application is disclosed mapping a layer-3 addresses of a real subnetwork onto a plurality of mapped layer-3 subnetwork addresses for conversations with applications or devices. Packets are modified to change a destination layer-3 address in a mapped subnetwork, pointing to corresponding real IP address and forwarding the packets. The conversation to which a response from a reallayer-3 address relates is identified. The source layer-3 address and packet contents are changed into the appropriate mapped subnetwork and the packet is forwarded to the application or device. An existing test network of any size may be used as the basis for testing the network management application.

Abstract translation: 在测试网络管理应用程序时，最好表明它们将与大型或非常大的网络协同工作，以确定应用程序功能的上限，以及可能增加上限的改进。 公开了一种测试网络应用的方法，其将真实子网的第3层地址映射到用于与应用或设备进行对话的多个映射层3子网地址上。 数据包被修改以改变映射子网中的目的地层3地址，指向相应的实际IP地址并转发数据包。 识别来自再层3地址的响应的对话。 源层3地址和分组内容被改变为适当的映射子网，并且分组被转发到应用或设备。 可以使用任何大小的现有测试网络作为测试网络管理应用的基础。

公开(公告)号：US07673035B2

公开(公告)日：2010-03-02

申请号：US09897518

申请日：2001-07-02

Applicant: David James Stevenson ,  Hamish Donald Stuart Martin ,  Andrew Hunter Gray ,  Christopher Robert Linzell

Inventor： David James Stevenson ,  Hamish Donald Stuart Martin ,  Andrew Hunter Gray ,  Christopher Robert Linzell

IPC: G06F15/173

CPC classification number: H04Q3/0075

Abstract: A network management apparatus and method processes network management data received during the monitoring of a network and generates events for presentation in an event list to a user when certain event conditions are detected. Network management data received in relation to an event condition is processed to determine whether it represents a recurring event condition. A recurring event condition is determined if a predetermined number of equivalent events have been generated, and appear in the event list, in an immediately preceding time period. In the described embodiment, if a recurring event condition occurs, a recurring event is generated, and subsequent occurrences of the event condition are not included in the event list presented to the user.

Abstract translation: 网络管理装置和方法处理在监视网络期间接收到的网络管理数据，并且当检测到某些事件条件时，向用户生成用于在事件列表中呈现的事件。 处理与事件条件相关的网络管理数据，以确定它是否代表重复的事件条件。 如果已经生成了预定数量的等效事件并且在紧接的前一时间段内出现在事件列表中，则确定循环事件条件。 在所描述的实施例中，如果发生重复事件条件，则生成循环事件，并且事件条件的后续出现不包括在呈现给用户的事件列表中。

公开(公告)号：US06704284B1

公开(公告)日：2004-03-09

申请号：US09479501

申请日：2000-01-07

Applicant: David James Stevenson ,  Andrew Hunter Gray ,  Robert James Duncan ,  Alastair Hugh Chisholm ,  Vanessa Serra ,  Colin Tinto

Inventor： David James Stevenson ,  Andrew Hunter Gray ,  Robert James Duncan ,  Alastair Hugh Chisholm ,  Vanessa Serra ,  Colin Tinto

IPC: H04L1226

CPC classification number: H04L43/00 ,  H04L41/5003 ,  H04L41/5035 ,  H04L43/045 ,  H04L43/0829 ,  H04L43/0882 ,  H04L43/10 ,  H04L43/16

Abstract: A system and method for providing a stress value representing the performance of a network comprising network devices is described. A raw data value for a monitored characteristic of a network device or link is obtained by the management system and compared with a predetermined threshold value for the monitored characteristic. If the raw data value is greater than or equal to said threshold value, the management system provides a stress value equal to a default value, said default value being a maximum or minimum value of a predefined bounded range; and if the raw value is less than said threshold value, the management system calculates a stress value within said predefined bounded range using an appropriate algorithm for said monitored characteristic.

Abstract translation: 描述了一种用于提供表示包括网络设备的网络的性能的应力值的系统和方法。 通过管理系统获得网络设备或链路的监视特性的原始数据值，并将其与所监视特性的预定阈值进行比较。 如果原始数据值大于或等于所述阈值，则管理系统提供等于默认值的应力值，所述默认值是预定义界限范围的最大值或最小值; 并且如果所述原始值小于所述阈值，则所述管理系统使用针对所述被监视特征的适当算法来计算所述预定界限范围内的应力值。