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    Systems and methods for diagnosing faults in computer networks
    2.
    发明授权
    Systems and methods for diagnosing faults in computer networks 有权
    用于诊断计算机网络故障的系统和方法

    公开(公告)号：US07237138B2

    公开(公告)日：2007-06-26

    申请号：US10258908

    申请日：2001-05-07

    申请人： Joseph Greenwald ,  Scott Ball ,  Christopher Buia ,  Jonathan P. Caron ,  David K. Taylor

    发明人： Joseph Greenwald ,  Scott Ball ,  Christopher Buia ,  Jonathan P. Caron ,  David K. Taylor

    IPC分类号： G06F11/00

    CPC分类号： G06F11/2257

    摘要： A network management system (10) includes a fault diagnosis system (12) connectable to a communications network (20). The fault diagnosis system includes a fault object factory, a path determination module, and a fault diagnosis engine. The fault object factory is constructed and arranged to receive fault data and create fault objects. The path determination module is constructed to determine, in a communications network, a path related to the fault data. The fault diagnosis engine is constructed to perform, using the determined path, a fault analysis on the fault data to diagnose a fault related to the communications network. The network management may also include a help desk system (18), a topology mapper (14) or an impact analyzer (16).

    摘要翻译： 网络管理系统（10）包括可连接到通信网络（20）的故障诊断系统（12）。 故障诊断系统包括故障对象工厂，路径确定模块和故障诊断引擎。 故障对象工厂被构造和布置为接收故障数据并创建故障对象。 路径确定模块被构造成在通信网络中确定与故障数据相关的路径。 构建故障诊断引擎，使用确定的路径，对故障数据进行故障分析，以诊断与通信网络相关的故障。 网络管理还可以包括帮助台系统（18），拓扑映射器（14）或冲击分析器（16）。

    Method for achieving high-availability of itineraries in a real-time network scheduled packet routing system
    4.
    发明授权
    Method for achieving high-availability of itineraries in a real-time network scheduled packet routing system 有权
    在实时网络调度分组路由系统中实现行程高可用性的方法

    公开(公告)号：US08477616B1

    公开(公告)日：2013-07-02

    申请号：US10345897

    申请日：2003-01-16

    申请人： Steven Rogers ,  Sean Moore ,  Joseph Greenwald ,  Scott Ball

    发明人： Steven Rogers ,  Sean Moore ,  Joseph Greenwald ,  Scott Ball

    IPC分类号： H04L12/28

    CPC分类号： H04L49/253 ,  H04L45/10 ,  H04L45/20 ,  H04L45/40 ,  H04L47/15 ,  H04L47/2416 ,  H04L47/2433 ,  H04L47/283 ,  H04L47/33 ,  H04L47/50 ,  H04L47/56 ,  H04L47/568 ,  H04L47/70 ,  H04L47/724 ,  H04L47/762 ,  H04L47/781 ,  H04L47/801 ,  H04L47/829 ,  H04L49/206

    摘要： A system using scheduled times for transmission at each link guarantees bandwidth for transmitting data across a packet network. A scheduling agent determines availability of data paths across a network according to pre-selected criteria and real-time network topology information. Precise schedules are determined for transmission and reception appointments for data packets to traverse each link and switch in the network including compensation for transmission delays and switch latencies, resulting in a fixed packet flow itinerary for each connection. Itineraries are communicated to schedule-aware switches and endpoints and appointment times are reserved for transmission of the scheduled data packets. Scheduled packets arriving at each switch are forwarded according to their predetermined arrival and departure schedules, rather than their headers or contents, relieving the switches from making real-time routing decisions. Any unscheduled transmission times remain available for routing of unscheduled packets according to their IP headers. Real-time transmission of data can be guaranteed in each scheduled path, and schedule selection criteria may be adjusted according to network utilization and tolerable setup delay and end-to-end delay.

    摘要翻译： 在每个链路上使用调度时间进行传输的系统保证通过分组网络发送数据的带宽。 调度代理根据预先选择的标准和实时网络拓扑信息来确定跨网络的数据路径的可用性。 确定精确时间表用于数据分组的传输和接收约会，以遍历每个链路并在网络中切换，包括传输延迟和切换延迟的补偿，导致每个连接的固定分组流程行程。 将行程传达给计划感知交换机和端点，并且预约时间被保留用于传送调度的数据分组。 到达每个交换机的计划的分组根据其预定的到达和离开时间表而不是其报头或内容被转发，从而减轻了交换机的实时路由决定。 任何非计划的传输时间都可用于根据其IP报头路由未调度的分组。 可以在每个调度路径中保证数据的实时传输，并且调度选择标准可以根据网络利用率和可容忍的建立延迟和端到端延迟进行调整。