公开(公告)号：US07640460B2

公开(公告)日：2009-12-29

申请号：US11680477

申请日：2007-02-28

申请人： Paramvir Bahl ,  Ranveer Chandra ,  Lun Li ,  David A. Maltz ,  Ming Zhang

发明人： Paramvir Bahl ,  Ranveer Chandra ,  Lun Li ,  David A. Maltz ,  Ming Zhang

IPC分类号： G06F11/00

CPC分类号： H04L41/0681

摘要： Exemplary methods, computer-readable media, and systems for detecting a fault by a packet trace, includes monitoring at least one packet transmitted to or received from, an computing device of an end user, between one or more computing devices implementing at least one of a service or an application on an enterprise network. The process also includes identifying whether an abnormal condition occurred on the computing device of the end user based on monitoring at least one packet transmitted to or received from, the computing device of the end user; and detecting a fault by using an algorithm based on monitoring at least one packet transmitted or received from, the computing device of the end user; wherein the fault indicates a desired course of action did not occur while the computing device of the end user uses at least one of the service or the application in the enterprise network.

摘要翻译： 用于通过分组跟踪检测故障的示例性方法，计算机可读介质和系统包括监视在一个或多个计算设备之间发送到终端用户的计算设备或从终端用户的计算设备接收的至少一个分组，其实现以下中的至少一个： 企业网络上的服务或应用程序。 该过程还包括基于监视终端用户的计算设备发送到或从其接收到的至少一个分组来识别终端用户的计算设备上是否发生异常状况; 以及通过使用基于监视从最终用户的计算设备发送或接收的至少一个分组的算法来检测故障; 其中所述故障指示在所述终端用户的计算设备使用所述企业网络中的所述服务或应用中的至少一个的情况下不发生期望的操作过程。

公开(公告)号：US20080209273A1

公开(公告)日：2008-08-28

申请号：US11680477

申请日：2007-02-28

申请人： Paramvir Bahl ,  Ranveer Chandra ,  Lun Li ,  David A. Maltz ,  Ming Zhang

发明人： Paramvir Bahl ,  Ranveer Chandra ,  Lun Li ,  David A. Maltz ,  Ming Zhang

IPC分类号： G06F11/00

CPC分类号： H04L41/0681

摘要： Exemplary methods, computer-readable media, and systems for detecting a fault by a packet trace, includes monitoring at least one packet transmitted to or received from, an computing device of an end user, between one or more computing devices implementing at least one of a service or an application on an enterprise network. The process also includes identifying whether an abnormal condition occurred on the computing device of the end user based on monitoring at least one packet transmitted to or received from, the computing device of the end user; and detecting a fault by using an algorithm based on monitoring at least one packet transmitted or received from, the computing device of the end user; wherein the fault indicates a desired course of action did not occur while the computing device of the end user uses at least one of the service or the application in the enterprise network.

摘要翻译： 用于通过分组跟踪检测故障的示例性方法，计算机可读介质和系统包括监视在一个或多个计算设备之间发送到终端用户的计算设备或从终端用户的计算设备接收的至少一个分组，其实现以下中的至少一个： 企业网络上的服务或应用程序。 该过程还包括基于监视终端用户的计算设备发送到或从其接收到的至少一个分组来识别终端用户的计算设备上是否发生异常状况; 以及通过使用基于监视从最终用户的计算设备发送或接收的至少一个分组的算法来检测故障; 其中所述故障指示在所述终端用户的计算设备使用所述企业网络中的所述服务或应用中的至少一个的情况下不发生期望的操作过程。

公开(公告)号：US08443074B2

公开(公告)日：2013-05-14

申请号：US12039714

申请日：2008-02-28

申请人： Paramvir Bahl ,  Srikanth Kandula ,  Ranveer Chandra ,  David A. Maltz ,  Ming Zhang ,  Albert Greenberg

发明人： Paramvir Bahl ,  Srikanth Kandula ,  Ranveer Chandra ,  David A. Maltz ,  Ming Zhang ,  Albert Greenberg

IPC分类号： G06F15/16 ,  G06F17/00

CPC分类号： H04L41/5058 ,  H04L41/12

摘要： Constructing an inference graph relates to the creation of a graph that reflects dependencies within a network. In an example embodiment, a method includes determining dependencies among components of a network and constructing an inference graph for the network responsive to the dependencies. The components of the network include services and hardware components, and the inference graph reflects cross-layer components including the services and the hardware components. In another example embodiment, a system includes a service dependency analyzer and an inference graph constructor. The service dependency analyzer is to determine dependencies among components of a network, the components including services and hardware components. The inference graph constructor is to construct an inference graph for the network responsive to the dependencies, the inference graph reflecting cross-layer components including the services and the hardware components.

摘要翻译： 构造推理图与创建反映网络中依赖关系的图形有关。 在示例实施例中，一种方法包括确定网络的组件之间的依赖关系，并响应于依赖关系构建网络的推理图。 网络的组件包括服务和硬件组件，推理图反映了跨层组件，包括服务和硬件组件。 在另一示例实施例中，系统包括服务依赖性分析器和推理图构造器。 服务依赖性分析器是确定网络组件之间的依赖关系，包括服务和硬件组件在内的组件。 推理图构造函数是响应于依赖关系构建网络的推理图，反映包括服务和硬件组件在内的跨层组件的推理图。

公开(公告)号：US20080016115A1

公开(公告)日：2008-01-17

申请号：US11555571

申请日：2006-11-01

申请人： Paramvir Bahl ,  Ranveer Chandra ,  David A. Maltz ,  Suman Nath ,  Ming Zhang

发明人： Paramvir Bahl ,  Ranveer Chandra ,  David A. Maltz ,  Suman Nath ,  Ming Zhang

IPC分类号： G06F17/00

CPC分类号： H04L41/22 ,  H04L41/0677 ,  H04L41/12 ,  H04L41/142

摘要： In a network management system, dependency relationships of network clients and network elements are computed. In an implementation, a dependency graph is generated based on the relationships, and the probabilities of problems associated with the network client and network element are determined based on the dependency graph.

摘要翻译： 在网络管理系统中，计算网络客户端和网元的依赖关系。 在实现中，基于关系生成依赖图，并且基于依赖图来确定与网络客户端和网元相关联的问题的概率。

公开(公告)号：US20080222068A1

公开(公告)日：2008-09-11

申请号：US12039703

申请日：2008-02-28

申请人： Paramvir Bahl ,  Ranveer Chandra ,  Srikanth Kandula ,  David A. Maltz ,  Ming Zhang ,  Albert Greenberg

发明人： Paramvir Bahl ,  Ranveer Chandra ,  Srikanth Kandula ,  David A. Maltz ,  Ming Zhang ,  Albert Greenberg

IPC分类号： G06N5/04

CPC分类号： G06N5/043

摘要： Candidates that are potentially responsible for user-perceptible network problems may be inferred. In an example embodiment, a system includes an inference engine to produce a list of candidates that are potentially responsible for user-perceptible network problems, with the candidates being network components that may include both services and network elements. A response to a service request may be a non response, an incorrect response, an untimely correct response, or a timely correct response. The user-perceptible network problems may include the untimely correct response as well as the non response and the incorrect response. In another example embodiment, a method includes monitoring a network and producing a list of candidates that are potentially responsible for user-perceptible network problems. The candidates of the list may include both services and network elements of the monitored network.

摘要翻译： 可能推断可能对用户可感知的网络问题负责的候选者。 在示例实施例中，系统包括推理引擎，以产生潜在地负责用户可感知的网络问题的候选者的列表，候选者是可以包括服务和网络元件的网络组件。 对服务请求的响应可以是非响应，不正确的响应，不合时宜的响应或及时的正确响应。 用户可感知的网络问题可能包括不合时宜的响应以及非响应和不正确的响应。 在另一示例性实施例中，一种方法包括监视网络并产生潜在地负责用户可感知网络问题的候选者列表。 该列表的候选者可以包括被监视网络的服务和网络元件。

公开(公告)号：US08015139B2

公开(公告)日：2011-09-06

申请号：US12039703

申请日：2008-02-28

申请人： Paramvir Bahl ,  Ranveer Chandra ,  Srikanth Kandula ,  David A. Maltz ,  Ming Zhang ,  Albert Greenberg

发明人： Paramvir Bahl ,  Ranveer Chandra ,  Srikanth Kandula ,  David A. Maltz ,  Ming Zhang ,  Albert Greenberg

IPC分类号： G06N5/04

CPC分类号： G06N5/043

摘要： Candidates that are potentially responsible for user-perceptible network problems may be inferred. In an example embodiment, a system includes an inference engine to produce a list of candidates that are potentially responsible for user-perceptible network problems, with the candidates being network components that may include both services and network elements. A response to a service request may be a non response, an incorrect response, an untimely correct response, or a timely correct response. The user-perceptible network problems may include the untimely correct response as well as the non response and the incorrect response. In another example embodiment, a method includes monitoring a network and producing a list of candidates that are potentially responsible for user-perceptible network problems. The candidates of the list may include both services and network elements of the monitored network.

摘要翻译： 可能推断可能对用户可感知的网络问题负责的候选者。 在示例实施例中，系统包括推理引擎，以产生潜在地负责用户可感知的网络问题的候选者的列表，候选者是可以包括服务和网络元件的网络组件。 对服务请求的响应可以是非响应，不正确的响应，不合时宜的响应或及时的正确响应。 用户可感知的网络问题可能包括不合时宜的响应以及非响应和不正确的响应。 在另一示例性实施例中，一种方法包括监视网络并产生潜在地负责用户可感知网络问题的候选者列表。 该列表的候选者可以包括被监视网络的服务和网络元件。

公开(公告)号：US20080222287A1

公开(公告)日：2008-09-11

申请号：US12039714

申请日：2008-02-28

申请人： Paramvir Bahl ,  Srikanth Kandula ,  Ranveer Chandra ,  David A. Maltz ,  Ming Zhang ,  Albert Greenberg

发明人： Paramvir Bahl ,  Srikanth Kandula ,  Ranveer Chandra ,  David A. Maltz ,  Ming Zhang ,  Albert Greenberg

IPC分类号： G06F17/00 ,  G06F15/173

CPC分类号： H04L41/5058 ,  H04L41/12

摘要： Constructing an inference graph relates to the creation of a graph that reflects dependencies within a network. In an example embodiment, a method includes determining dependencies among components of a network and constructing an inference graph for the network responsive to the dependencies. The components of the network include services and hardware components, and the inference graph reflects cross-layer components including the services and the hardware components. In another example embodiment, a system includes a service dependency analyzer and an inference graph constructor. The service dependency analyzer is to determine dependencies among components of a network, the components including services and hardware components. The inference graph constructor is to construct an inference graph for the network responsive to the dependencies, the inference graph reflecting cross-layer components including the services and the hardware components.

摘要翻译： 构造推理图与创建反映网络中依赖关系的图形有关。 在示例实施例中，一种方法包括确定网络的组件之间的依赖关系，并响应于依赖关系构建网络的推理图。 网络的组件包括服务和硬件组件，推理图反映了跨层组件，包括服务和硬件组件。 在另一示例实施例中，系统包括服务依赖性分析器和推理图构造器。 服务依赖性分析器是确定网络组件之间的依赖关系，包括服务和硬件组件在内的组件。 推理图构造函数是响应于依赖关系构建网络的推理图，反映包括服务和硬件组件在内的跨层组件的推理图。

公开(公告)号：US08898292B2

公开(公告)日：2014-11-25

申请号：US13219581

申请日：2011-08-26

申请人： Cheng Huang ,  David A. Maltz ,  Jin Li ,  Ming Zhang ,  Chao Zhang ,  Keith W. Ross

发明人： Cheng Huang ,  David A. Maltz ,  Jin Li ,  Ming Zhang ,  Chao Zhang ,  Keith W. Ross

IPC分类号： G06F15/173 ,  H04L29/06 ,  H04L29/12

CPC分类号： H04L61/1511 ,  H04L63/12 ,  H04L63/1408 ,  H04L2463/146

摘要： A plurality of network addresses from a distributed client is obtained, at least a first portion of the obtained network addresses including resolved network address responses to distributed client requests for resolved network addresses corresponding to one or more network location indicators associated with a first web service. Test content is obtained, based on one or more of the network addresses included in the first portion. It is determined whether the obtained test content includes unauthorized content.

摘要翻译： 获得来自分布式客户端的多个网络地址，所获得的网络地址的至少第一部分包括对分配的客户端请求的分辨的网络地址响应，所述解析的网络地址对应于与第一web服务相关联的一个或多个网络位置指示符。 基于包括在第一部分中的一个或多个网络地址获得测试内容。 确定所获得的测试内容是否包括未授权的内容。

公开(公告)号：US09049140B2

公开(公告)日：2015-06-02

申请号：US12949402

申请日：2010-11-18

申请人： Abhishek Singh ,  Ming Zhang ,  Albert G. Greenberg ,  Parantap Lahiri ,  David A. Maltz ,  Srinivas Krishnan

发明人： Abhishek Singh ,  Ming Zhang ,  Albert G. Greenberg ,  Parantap Lahiri ,  David A. Maltz ,  Srinivas Krishnan

IPC分类号： H04L12/707 ,  H04L12/725 ,  H04L12/801 ,  H04L29/12

CPC分类号： H04L45/22 ,  H04L45/302 ,  H04L47/10 ,  H04L61/25

摘要： A source device obtains a data packet that includes both a destination address and a payload. The source device selects an exit point address of multiple exit point addresses corresponding to the destination address based on one or more policies. The source device encapsulates the data packet with a header that includes the selected exit point address, and the encapsulated data packet is provided to the backbone network. The encapsulated data packet is routed through the backbone network based on the exit point address, and an edge router of the backbone network identifies an interface of the edge router that corresponds to the exit point address. The header is removed from the encapsulated data packet, and the data packet is added to a buffer of the interface for routing to one or more other devices outside of the backbone network.

摘要翻译： 源设备获得包括目的地地址和有效载荷的数据分组。 源设备基于一个或多个策略来选择与目的地地址相对应的多个出口点地址的出口点地址。 源设备用包含所选出口点地址的报头封装数据包，并将封装的数据包提供给骨干网。 封装的数据包根据出口点地址通过骨干网进行路由，骨干网边缘路由器识别出口点地址对应的边缘路由器接口。 从封装的数据包中删除标题，并将数据包添加到接口的缓冲区，以便路由到骨干网以外的一个或多个其他设备。

公开(公告)号：US09025434B2

公开(公告)日：2015-05-05

申请号：US13617097

申请日：2012-09-14

申请人： David A. Maltz ,  Lihua Yuan ,  Ming Zhang ,  Xin Wu ,  Daniel Joseph Turner ,  Chao-Chih Chen

发明人： David A. Maltz ,  Lihua Yuan ,  Ming Zhang ,  Xin Wu ,  Daniel Joseph Turner ,  Chao-Chih Chen

IPC分类号： H04L12/24 ,  H04L12/26

CPC分类号： H04L41/0654 ,  H04L41/0883 ,  H04L41/145 ,  H04L41/147 ,  H04L43/0817 ,  H04L43/0823

摘要： The subject disclosure is directed towards a technology that automatically mitigates datacenter failures, instead of relying on human intervention to diagnose and repair the network. Via a mitigation pipeline, when a network failure is detected, a candidate set of components that are likely to be the cause of the failure is identified, with mitigation actions iteratively targeting each component to attempt to alleviate the problem. The impact to the network is estimated to ensure that the redundancy present in the network will be able to handle the mitigation action without adverse disruption to the network.

摘要翻译： 主题公开涉及一种自动减轻数据中心故障的技术，而不是依靠人为干预来诊断和修复网络。 通过缓解流程，当检测到网络故障时，识别可能是故障原因的一组候选组件，其中缓解措施迭代地针对每个组件来尝试减轻该问题。 估计对网络的影响可确保网络中存在的冗余能够处理缓解动作，而不会对网络造成不利影响。