METHODS AND APPARATUS TO MONITOR BORDER GATEWAY PROTOCOL SESSIONS
    1.
    发明申请
    METHODS AND APPARATUS TO MONITOR BORDER GATEWAY PROTOCOL SESSIONS 有权
    监测边界网关协议会议的方法和设备

    公开(公告)号:US20120213091A1

    公开(公告)日:2012-08-23

    申请号:US13459611

    申请日:2012-04-30

    IPC分类号: H04L12/26

    摘要: Example methods and apparatus to monitor border gateway protocol sessions are disclosed. A disclosed example method includes detecting a failure of a first BGP session, initiating a sustained-down timer and a reset-timer in response to detecting the failure, identifying a sustained-down condition in response to the sustained-down timer exceeding a first time threshold, identifying a flapping condition in response to counting a threshold number of BGP failures and corresponding BGP re-establishments during a second time threshold of the reset-timer, and identifying a continuous flapping condition in response to detecting the flapping condition consecutively for a threshold number of instances.

    摘要翻译: 公开了监控边界网关协议会话的示例方法和设备。 所公开的示例性方法包括响应于检测到故障来检测第一BGP会话的故障,启动缓慢定时器和复位定时器,响应于持续下降定时器超过第一时间来识别持续状态 阈值,响应于在复位定时器的第二时间阈值期间计数阈值数量的BGP故障和相应的BGP重建,识别振荡条件,以及响应于连续检测阈值的阈值来识别连续拍摄条件 实例数。

    Methods and apparatus to monitor border gateway protocol sessions
    2.
    发明授权
    Methods and apparatus to monitor border gateway protocol sessions 有权
    监控边界网关协议会话的方法和设备

    公开(公告)号:US08948021B2

    公开(公告)日:2015-02-03

    申请号:US13459611

    申请日:2012-04-30

    摘要: Example methods and apparatus to monitor border gateway protocol sessions are disclosed. A disclosed example method includes detecting a failure of a first BGP session, initiating a sustained-down timer and a reset-timer in response to detecting the failure, identifying a sustained-down condition in response to the sustained-down timer exceeding a first time threshold, identifying a flapping condition in response to counting a threshold number of BGP failures and corresponding BGP re-establishments during a second time threshold of the reset-timer, and identifying a continuous flapping condition in response to detecting the flapping condition consecutively for a threshold number of instances.

    摘要翻译: 公开了监控边界网关协议会话的示例方法和设备。 所公开的示例性方法包括响应于检测到故障来检测第一BGP会话的故障,启动缓慢定时器和复位定时器,响应于持续下降定时器超过第一时间来识别持续状态 阈值,响应于在复位定时器的第二时间阈值期间计数阈值数量的BGP故障和相应的BGP重建,识别振荡条件,以及响应于连续检测阈值的阈值来识别连续拍摄条件 实例数。

    Predicting cable failure through remote failure detection of error signatures
    5.
    发明授权
    Predicting cable failure through remote failure detection of error signatures 有权
    通过错误签名的远程故障检测来预测电缆故障

    公开(公告)号:US07397385B1

    公开(公告)日:2008-07-08

    申请号:US11297581

    申请日:2005-12-08

    IPC分类号: G08B21/00

    摘要: Computer systems and techniques for predicting a cable failure in a network system begin by receiving a remote alarm indicator followed by a remote alarm indicator clear as a transmission alarm indicator of an intermittent short duration failure on the transmission path of a circuit. If the transmission alarm indicator is of a duration less than or equal to a preset threshold D it is considered an acceptable short hit transmission alarm. When at least N acceptable transmission alarms have been received and the time stamps of the last N acceptable transmission alarms have been recorded, then a determination is made as to whether N acceptable transmission alarms have been received within a preset time period. A moving window time period is calculated as the difference between the time stamp of the present acceptable transmission alarm K and the time stamp of the [(K−N)+1] acceptable transmission alarm. If the difference is less than or equal to T, a cable error signature is indicated. Based on the cable error signature, a cable failure may be predicted.

    摘要翻译: 用于预测网络系统中的电缆故障的计算机系统和技术首先通过接收远程警报指示符,然后将远程警报指示符清除为电路传输路径上的间歇性短时间故障的传输警报指示器。 如果传输报警指示灯持续时间小于等于预设阈值D,则认为是可接受的短命中传输报警。 当已经接收到至少N个可接受的传输报警并且已经记录了最后N个可接受传输报警的时间戳时,则确定在预设时间段内是否已经接收到N个可接受的传输报警。 移动窗口时间段被计算为当前可接受的传输报警K的时间戳和[(K-N)+1]可接受传输报警的时间戳之间的差。 如果差值小于或等于T,则指示电缆错误签名。 基于电缆错误签名,可以预测电缆故障。

    Predicting cable failure through remote failure detection of error signatures
    6.
    发明授权
    Predicting cable failure through remote failure detection of error signatures 有权
    通过错误签名的远程故障检测来预测电缆故障

    公开(公告)号:US07847701B2

    公开(公告)日:2010-12-07

    申请号:US12166306

    申请日:2008-07-01

    IPC分类号: G08B21/00

    摘要: Computer systems and techniques for predicting a cable failure in a network system begin by receiving a remote alarm indicator followed by a remote alarm indicator clear as a transmission alarm indicator of an intermittent short duration failure on the transmission path of a circuit. If the transmission alarm indicator is of a duration less than or equal to a preset threshold D it is considered an acceptable short hit transmission alarm. When at least N acceptable transmission alarms have been received and the time stamps of the last N acceptable transmission alarms have been recorded, then a determination is made as to whether N acceptable transmission alarms have been received within a preset time period. A moving window time period is calculated as the difference between the time stamp of the present acceptable transmission alarm K and the time stamp of the [(K−N)+1] acceptable transmission alarm. If the difference is less than or equal to T, a cable error signature is indicated. Based on the cable error signature, a cable failure may be predicted.

    摘要翻译: 用于预测网络系统中的电缆故障的计算机系统和技术首先通过接收远程报警指示符,然后将远程报警指示符清除为电路传输路径上的间歇性短时间故障的传输报警指示器。 如果传输报警指示灯持续时间小于等于预设阈值D,则认为是可接受的短命中传输报警。 当已经接收到至少N个可接受的传输报警并且已经记录了最后N个可接受传输报警的时间戳时,则确定在预设时间段内是否已经接收到N个可接受的传输报警。 移动窗口时间段被计算为当前可接受的传输报警K的时间戳和[(K-N)+1]可接受传输报警的时间戳之间的差。 如果差值小于或等于T,则指示电缆错误签名。 基于电缆错误签名,可以预测电缆故障。

    PREDICTING CABLE FAILURE THROUGH REMOTE FAILURE DETECTION OF ERROR SIGNATURES
    7.
    发明申请
    PREDICTING CABLE FAILURE THROUGH REMOTE FAILURE DETECTION OF ERROR SIGNATURES 有权
    通过远程故障检测错误标志预测电缆故障

    公开(公告)号:US20080266127A1

    公开(公告)日:2008-10-30

    申请号:US12166306

    申请日:2008-07-01

    IPC分类号: G08B21/00

    摘要: Computer systems and techniques for predicting a cable failure in a network system begin by receiving a remote alarm indicator followed by a remote alarm indicator clear as a transmission alarm indicator of an intermittent short duration failure on the transmission path of a circuit. If the transmission alarm indicator is of a duration less than or equal to a preset threshold D it is considered an acceptable short hit transmission alarm. When at least N acceptable transmission alarms have been received and the time stamps of the last N acceptable transmission alarms have been recorded, then a determination is made as to whether N acceptable transmission alarms have been received within a preset time period. A moving window time period is calculated as the difference between the time stamp of the present acceptable transmission alarm K and the time stamp of the [(K−N)+1] acceptable transmission alarm. If the difference is less than or equal to T, a cable error signature is indicated. Based on the cable error signature, a cable failure may be predicted.

    摘要翻译: 用于预测网络系统中的电缆故障的计算机系统和技术首先通过接收远程警报指示符,然后将远程警报指示符清除为电路传输路径上的间歇性短时间故障的传输警报指示器。 如果传输报警指示灯持续时间小于等于预设阈值D,则认为是可接受的短命中传输报警。 当已经接收到至少N个可接受的传输报警并且已经记录了最后N个可接受传输报警的时间戳时,则确定在预设时间段内是否已经接收到N个可接受的传输报警。 移动窗口时间段被计算为当前可接受的传输报警K的时间戳和[(K-N)+1]可接受传输报警的时间戳之间的差。 如果差值小于或等于T,则指示电缆错误签名。 基于电缆错误签名,可以预测电缆故障。

    Automatic problem isolation for multi-layer network failures
    8.
    发明授权
    Automatic problem isolation for multi-layer network failures 有权
    多层网络故障自动解决问题

    公开(公告)号:US07570580B1

    公开(公告)日:2009-08-04

    申请号:US11292276

    申请日:2005-12-02

    IPC分类号: H04L1/00

    CPC分类号: H04L41/0659 H04L41/064

    摘要: A method and apparatus includes automatically correlating indicators already generated by network components to detect and isolate failures that are caused by or related to network components operating on different layers of the open system interconnect (OSI) model. Failure indicators that persist for longer than a specified time window are automatically detected and correlated with one another based on a topology table. The method uses indicators already generated by the network components, obviating the need for software that typically resides on and consumes valuable processing time of network components.

    摘要翻译: 一种方法和装置包括自动地相关联已经由网络组件生成的指示符,以检测和隔离由在开放系统互连(OSI)模型的不同层上操作的网络组件引起或相关的故障。 持续时间长于指定时间窗口的故障指示器将根据拓扑表自动检测并相互关联。 该方法使用已经由网络组件生成的指示符,避免了对通常驻留的软件的需求,并消耗网络组件的有价值的处理时间。