公开(公告)号：US20090063673A1

公开(公告)日：2009-03-05

申请号：US11847294

申请日：2007-08-29

Applicant: Michael E. Baskey ,  Mandis S. Beigi ,  Sivaram Gottimukkala ,  Lap T. Huynh ,  Dinakaran Joseph ,  Einar Lueck ,  Debanjan Saha ,  Sambit Sahu ,  Dinesh C. Verma

Inventor： Michael E. Baskey ,  Mandis S. Beigi ,  Sivaram Gottimukkala ,  Lap T. Huynh ,  Dinakaran Joseph ,  Einar Lueck ,  Debanjan Saha ,  Sambit Sahu ,  Dinesh C. Verma

IPC: H04L12/26 ,  G06F15/173

CPC classification number: H04L43/0852 ,  H04L41/5003 ,  H04L41/5009 ,  H04L41/5019 ,  H04L47/10 ,  H04L47/18 ,  H04L47/20 ,  H04L47/2425 ,  H04L47/283

Abstract: Embodiments of the present invention address deficiencies of the art in respect to e2e SLA support in a network of both manageable and unmanageable portions and provide a method, system and computer program product for e2e SLA compliance across both managed and unmanaged network segments. In one embodiment of the invention, a method for e2e SLA compliance across both managed and unmanaged network segments can be provided. The method can include identifying both a managed segment and an unmanaged segment of an e2e network for a communications path implicated by an SLA, determining an observed delay for the unmanaged segment of the e2e network, computing from a desired delay for the communications path and the observed delay a differential delay, and constraining the managed segment to meet the differential delay in order to assure meeting the desired delay for the communications path implicated by the SLA.

Abstract translation: 本发明的实施例解决了在可管理和不可管理部分的网络中关于e2e SLA支持的本领域的缺点，并且提供了用于在被管理网络段和非管理网段之间实现e2e SLA兼容的方法，系统和计算机程序产品。 在本发明的一个实施例中，可以提供一种用于在被管理网络段和非管理网段之间执行e2e SLA兼容的方法。 该方法可以包括识别由SLA所涉及的通信路径的e2e网络的管理段和非托管段，确定e2e网络的非管理段的观察到的延迟，从通信路径的期望延迟和 观察延迟差分延迟，并限制被管理段以满足差分延迟，以便确保满足SLA所涉及的通信路径的期望延迟。

公开(公告)号：US07496663B2

公开(公告)日：2009-02-24

申请号：US11214102

申请日：2005-08-29

Applicant: Michael R. Haley ,  Sanghwan Lee ,  Prashant Pradhan ,  Debanjan Saha ,  Sambit Sahu

Inventor： Michael R. Haley ,  Sanghwan Lee ,  Prashant Pradhan ,  Debanjan Saha ,  Sambit Sahu

IPC: G06F15/173 ,  G06F15/177

CPC classification number: H04L67/104 ,  H04L43/00 ,  H04L43/0817 ,  H04L43/0829 ,  H04L43/0852 ,  H04L43/0864 ,  H04L67/1051 ,  H04L67/1059 ,  H04L67/1089

Abstract: A system and method for scalable status change detection in a network of nodes includes embedding node coordinate positions into a virtual map environment. A cluster of nodes are represented with a representative node to form a hierarchy of nodes and clusters where changes in a status of the representative node imply a status change in the nodes of the cluster. By selectively monitoring the representative nodes for the changes in status, the representative nodes create a capability for scalable monitoring of the network.

Abstract translation: 在节点网络中的可扩展状态变化检测的系统和方法包括将节点坐标位置嵌入到虚拟地图环境中。 用代表性节点表示节点簇，以形成节点和集群的层次结构，其中代表节点的状态变化意味着集群节点中的状态变化。 通过有选择地监测代表性节点的状态变化，代表性节点创建了可扩展监控网络的能力。

公开(公告)号：US07474631B2

公开(公告)日：2009-01-06

申请号：US11034702

申请日：2005-01-13

Applicant: Parijat Dube ,  Zhen Liu ,  Sambit Sahu

Inventor： Parijat Dube ,  Zhen Liu ,  Sambit Sahu

IPC: H04J1/16 ,  H04L12/56

CPC classification number: H04L12/185 ,  H04L12/1854 ,  H04L12/66 ,  H04L41/0896 ,  H04L41/145 ,  H04L41/5009 ,  H04L41/5051 ,  H04L41/509

Abstract: The present invention broadly contemplates addressing QoS concerns in overlay design to account for the last mile problem. In accordance with the present invention, a simple queuing network model for bandwidth usage in the last-mile bottlenecks is used to capture the effects of the asymmetry, the contention for bandwidth on the outgoing link, and to provide characterization of network throughput and latency. Using this characterization computationally inexpensive heuristics are preferably used for organizing end-systems into a multicast overlay which meets specified latency and packet loss bounds, given a specific packet arrival process.

Abstract translation: 本发明广泛地考虑在覆盖设计中解决QoS问题以解决最后一英里问题。 根据本发明，用于在最后一公里瓶颈中的带宽使用的简单排队网络模型用于捕获不对称性的影响，对出站链路的带宽争用，并提供网络吞吐量和延迟的表征。 使用这种表征，计算上廉价的启发式算法优选地用于将终端系统组织成组播覆盖，其在给定特定分组到达过程时满足指定的延迟和分组丢失边界。

公开(公告)号：US20080263207A1

公开(公告)日：2008-10-23

申请号：US12165546

申请日：2008-06-30

Applicant: George V. Popescu ,  Zhen Liu ,  Sambit Sahu

Inventor： George V. Popescu ,  Zhen Liu ,  Sambit Sahu

IPC: G06F15/173

CPC classification number: H04L12/1822 ,  H04L12/185

Abstract: A method, computer readable media, and apparatus of hierarchical-based communication session and data distribution management that indexes client's communication preferences and network attribute information. Indexing is used to generate dynamic group membership lists that map into communication groups. Indexing is replicated at control nodes in the network overlay to allow distributed management of group membership. Send/receive operations are decoupled through data distribution and the indexing structure. Senders and receivers register their group communication interests to a parent node in the hierarchy. The session control structure aggregates client interest and dynamically updates replicas at control nodes which are selected according to the changes in registered client interest. The indexing structure has self-managing properties for automatic clustering based on client session and data interests, and dynamic partitioning of the session/data interest attribute space. Group membership is managed by querying the indexed session/data distribution management structure and mapping output to communication groups.

Abstract translation: 一种方法，计算机可读介质和基于层次的通信会话和数据分发管理的装置，其对客户端的通信偏好和网络属性信息进行索引。 索引用于生成映射到通信组的动态组成员资格列表。 索引在网络覆盖中的控制节点上复制，以允许分组管理组成员资格。 发送/接收操作通过数据分发和索引结构进行解耦。 发件人和接收者将他们的组通信兴趣注册到层次结构中的父节点。 会话控制结构聚合客户端兴趣并动态地更新根据注册客户端兴趣的变化选择的控制节点处的副本。 索引结构具有基于客户端会话和数据兴趣的自动聚类的自管理属性，以及会话/数据兴趣属性空间的动态分区。 通过查询索引的会话/数据分发管理结构并将输出映射到通信组来管理组成员资格。

公开(公告)号：US20080250135A1

公开(公告)日：2008-10-09

申请号：US11696975

申请日：2007-04-05

Applicant: Prashant Pradhan ,  Debanjan Saha ,  Sambit Sahu ,  Manpreet Singh

Inventor： Prashant Pradhan ,  Debanjan Saha ,  Sambit Sahu ,  Manpreet Singh

IPC: G06F15/173

CPC classification number: H04L12/66 ,  H04L41/12 ,  H04L41/14 ,  H04L43/0852 ,  H04L43/0882

Abstract: Managing application performance on a network. A network graph is generated from a set of application endpoints on the network. The network graph is annotated by associating one or more of the application endpoints with at least one of a corresponding latency annotation or a corresponding available bandwidth annotation. An end to end plan is formulated from the annotated network graph, wherein the plan maps one or more application requirements onto the plurality of paths in accordance with one or more end to end control adjustments including at least one of a server selection adjustment, an internet service provider (ISP) selector, or an overlay routing adjustment.

Abstract translation: 管理网络上的应用程序性能。 从网络上的一组应用程序端点生成网络图。 通过将一个或多个应用端点与对应的延迟注释或相应的可用带宽注释中的至少一个相关联来注释网络图。 根据一个或多个端对端控制调整，从注释网络图形成端到端计划，其中，所述计划将一个或多个应用需求映射到所述多个路径上，所述一个或多个端到端控制调整包括以下各项中的至少一个：服务器选择调整，互联网 服务提供商（ISP）选择器或覆盖路由调整。

公开(公告)号：US20080228873A1

公开(公告)日：2008-09-18

申请号：US12131344

申请日：2008-06-02

Applicant: Michael Edward Baskey ,  Chun-Shi Chang ,  Lap Thiet Huynh ,  Dinakaran Joseph ,  Sambit Sahu ,  Dinesh Chandra Verma ,  Michael D. Williams

Inventor： Michael Edward Baskey ,  Chun-Shi Chang ,  Lap Thiet Huynh ,  Dinakaran Joseph ,  Sambit Sahu ,  Dinesh Chandra Verma ,  Michael D. Williams

IPC: G06F15/16

CPC classification number: H04L43/04 ,  H04L43/0805 ,  H04L43/50

Abstract: A system and method for monitoring liveliness includes a management device which has an application layer where applications are executed. A connection monitor is located other than on the application layer, and the connection monitor is configured to receive requests from clients and deliver the requests to components on the application layer. The components include a generic application monitor which responds to liveliness monitor requests from the clients for all applications monitored, and one or more applications which response to requests to that application.

Abstract translation: 用于监视活力的系统和方法包括具有执行应用的应用层的管理设备。 连接监视器位于应用层之外，并且连接监视器被配置为从客户端接收请求并将请求传递到应用层上的组件。 这些组件包括一个通用应用程序监视器，它响应来自客户机的所有受监控应用程序的活动监视请求以及一个或多个响应于该应用程序请求的应用程序。

公开(公告)号：US20060230407A1

公开(公告)日：2006-10-12

申请号：US11100565

申请日：2005-04-07

Applicant: Marcel-Catalin Rosu ,  Debanjan Saha ,  Sambit Sahu ,  Anees Shaikh

Inventor： Marcel-Catalin Rosu ,  Debanjan Saha ,  Sambit Sahu ,  Anees Shaikh

IPC: G06F9/46

CPC classification number: G06F9/5088 ,  G06F9/45558 ,  G06F2009/4557

Abstract: A method (and system) for managing a distributed-memory parallel application running on multiple servers, includes dynamically moving a plurality of executable program components, where each of the plurality of executable program components are running on one of a plurality of virtual machines, using migration of the virtual machines between physical servers. The load balancing is operated based on a workload of each of the virtual machines and servers, where a virtual machine, or a plurality of virtual machines, are transferred to balance the workload between each of the servers.

公开(公告)号：US20060023727A1

公开(公告)日：2006-02-02

申请号：US10903531

申请日：2004-07-30

Applicant: David George ,  Raymond Jennings ,  Jason Lavoie ,  Sambit Sahu

Inventor： David George ,  Raymond Jennings ,  Jason Lavoie ,  Sambit Sahu

IPC: H04L12/28

CPC classification number: H04L12/2854 ,  H04L63/0407

Abstract: One embodiment of the present method and apparatus for anonymous data transfers between first and second endpoints in a network comprises forwarding a message through the network, where a default value in the message's time to live field has been modified by an amount such that intermediate nodes or endpoints receiving the message can not infer an ultimate source (e.g., the first endpoint) of the message.

Abstract translation: 用于在网络中的第一和第二端点之间的匿名数据传输的本方法和装置的一个实施例包括通过网络转发消息，其中消息的生存时间段中的默认值已被修改了一定量，使得中间节点或 接收消息的端点不能推断消息的最终源（例如，第一端点）。

公开(公告)号：US20050120105A1

公开(公告)日：2005-06-02

申请号：US10725298

申请日：2003-12-01

Applicant: George Popescu ,  Zhen Liu ,  Sambit Sahu

Inventor： George Popescu ,  Zhen Liu ,  Sambit Sahu

IPC: H04L12/24 ,  H04L29/08 ,  G06F15/173 ,  G06F15/16

CPC classification number: H04L69/329 ,  H04L41/00

Abstract: A method of clustering communication nodes based on network attributes such as network delays and forwarding capacity; on communication interest attributes; and on application attributes such as quality of service preferences/constraints (e.g. end-to-end delay constraints, bandwidth constraints) in providing communications between users and application servers. A multi-attribute communication feature vector is formed. That vector is comprised of network attributes (such as available bandwidth, client location attributes in the IP map), communication interests attributes (client request for content updates, client subscription to specific data items or to a set of proximal data sources in network space or application/virtual space) and quality of service requirements (such as delay and loss constraints is used to from efficient group communication mechanisms for distributed collaborative applications. Then the multi-attribute communication feature vectors are clustered. The clustering methods for multi-type attribute feature vectors are: iterative clustering using a generalized distance space with normalized attribute subspace metrics; fusion clustering, and nested clustering.

Abstract translation: 基于网络延迟和转发能力等网络属性对通信节点进行聚类的方法; 沟通兴趣属性; 以及在提供用户和应用服务器之间的通信的诸如服务质量优先/约束（例如，端到端延迟约束，带宽约束）之类的应用属性上。 形成多属性通信特征向量。 该向量包括网络属性（例如可用带宽，IP映射中的客户端位置属性），通信兴趣属性（客户端请求内容更新，客户端订阅特定数据项或网络空间中的一组近端数据源， 应用/虚拟空间）和服务质量要求（如延迟和丢失约束）用于分布式协作应用的高效群组通信机制，然后聚类多属性通信特征向量，多类型属性特征的聚类方法 向量是：使用具有归一化属性子空间度量的广义距离空间的迭代聚类;融合聚类和嵌套聚类。

公开(公告)号：US20050120088A1

公开(公告)日：2005-06-02

申请号：US10726002

申请日：2003-12-01

Applicant: Zhen Liu ,  George Popescu ,  Sambit Sahu

Inventor： Zhen Liu ,  George Popescu ,  Sambit Sahu

IPC: G06F7/00 ,  G06F15/167 ,  G06F15/173 ,  G06F17/30 ,  H04L12/00 ,  H04L12/24

CPC classification number: H04L41/12 ,  H04L45/46 ,  H04L45/64

Abstract: A method and apparatus for managing communications for collaborative applications. Middleware uses, network, application, and middleware resource information together with user information to facilitate communications between the application resources and the users via a hierarchical control structure that implements a communication overlay tree. That overlay tree is implemented in view of network constraints, and on the users and on their communication constraints. The middleware provides user index identifiers that inform the application that specific users have communication interests in specific parts of the application space. To send data to users that are interested in a specific part of the application space the application sends that data with a list of user index identifiers. The middleware then associates the user index identifiers with individual users and routes sent data to the individual users along the overlay tree.

Abstract translation: 一种管理协作应用通信的方法和装置。 中间件使用，网络，应用程序和中间件资源信息以及用户信息，以通过实现通信覆盖树的分层控制结构来促进应用程序资源和用户之间的通信。 鉴于网络约束，以及用户及其通信约束，实现了该覆盖树。 中间件提供用户索引标识符，通知应用程序特定用户在应用程序空间的特定部分具有沟通兴趣。 要将数据发送给对应用空间的特定部分感兴趣的用户，应用程序使用用户索引标识符列表发送该数据。 然后，中间件将用户索引标识符与个别用户相关联，并将发送的数据沿覆盖树路由到各个用户。