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    LSP ping and traceroute for bypass tunnels
    1.
    发明授权
    LSP ping and traceroute for bypass tunnels 有权

    公开(公告)号：US10178006B2

    公开(公告)日：2019-01-08

    申请号：US15589245

    申请日：2017-05-08

    Applicant: JUNIPER NETWORKS, INC.

    Inventor： Kireeti Kompella ,  Nitin Bahadur

    IPC: H04L12/723 ,  H04L12/26 ,  H04L12/707 ,  H04L12/703

    Abstract: A method performed by a network device may include assembling a multiprotocol label switching (MPLS) echo request, the echo request including an instruction for a transit node to forward the echo request via a bypass path associated with the transit node, and an instruction for an egress node to send an echo reply indicating that the echo request was received on the bypass path. The method may also include sending the MPLS echo request over a functioning label switched path (LSP).

    Software defined network controller
    2.
    发明授权
    Software defined network controller 有权

    公开(公告)号：US09819540B1

    公开(公告)日：2017-11-14

    申请号：US15268937

    申请日：2016-09-19

    Applicant: Juniper Networks, Inc.

    Inventor： Nitin Bahadur ,  Kenneth E. Gray

    IPC: G06F15/177 ,  H04L12/24 ,  H04L29/06

    CPC classification number: H04L41/0813 ,  H04L41/0806 ,  H04L41/12 ,  H04L45/30 ,  H04L45/50 ,  H04L45/64 ,  H04L65/4084

    Abstract: An extensible software defined network (SDN) controller is described that provides an application-aware framework that enable a variety of different user applications to communicate with the controller and that allows the controller to automatically configure devices in a network based on the needs of the applications. For example, the controller includes a plurality of different northbound interfaces that enable a variety of different user applications to communicate with the controller. The controller also includes multiple southbound protocols for configuring and enabling functionality in network devices based on the communications with the user applications.

    Automated path re-optimization
    4.
    发明授权
    Automated path re-optimization 有权
    自动路径重新优化

    公开(公告)号：US09577925B1

    公开(公告)日：2017-02-21

    申请号：US13940128

    申请日：2013-07-11

    Applicant: Juniper Networks, Inc.

    Inventor： Nitin Bahadur ,  Sudhir Cheruathur

    IPC: H04L12/28 ,  H04L12/723

    CPC classification number: H04L45/50 ,  H04L45/125 ,  H04L45/42

    Abstract: In general, techniques are described for providing current bandwidth usage information for one or more label switched paths (LSPs) to a path computation element (PCE) to trigger the PCE to dynamically modify a path computation domain of the PCE to manage network traffic within the domain. In some examples, a network router signals an LSP in a packet-switched network according to an allocated bandwidth for the LSP. The network router receives and maps the network packets to the LSP for transport along the LSP in accordance with forwarding information. The network router determines bandwidth usage information for the LSP that indicates a volume of the network packets mapped to the LSP and sends, in a notification message, the bandwidth usage information for the LSP to a path computation element that computes label switched paths for a path computation domain to trigger reoptimization of the path computation domain.

    Abstract translation: 通常，描述了用于向路径计算元件（PCE）提供用于一个或多个标签交换路径（LSP）的当前带宽使用信息以触发PCE以动态地修改PCE的路径计算域以管理网络流量的技术 域。 在一些示例中，网络路由器根据LSP的分配带宽向分组交换网络中的LSP发送信号。 网络路由器根据转发信息，将网络数据包接收并映射到LSP，以沿LSP传输。 网络路由器确定LSP的带宽使用信息，该LSP指示映射到LSP的网络分组的卷，并将通知消息中的LSP的带宽使用信息发送给计算路径的标签交换路径的路径计算单元 计算域来触发路径计算域的优化。

    Selective label switched path re-routing
    7.
    发明授权
    Selective label switched path re-routing 有权
    选择性标签交换路径重路由

    公开(公告)号：US09253097B1

    公开(公告)日：2016-02-02

    申请号：US14042642

    申请日：2013-09-30

    Applicant: Juniper Networks, Inc.

    Inventor： Dhiman Barman ,  Ina Minei ,  Minjie Dai ,  Yimin Shen ,  Raveendra Torvi ,  Nitin Bahadur

    IPC: H04L12/24 ,  H04L12/803

    CPC classification number: H04L47/122 ,  H04L45/22 ,  H04L45/28 ,  H04L45/50

    Abstract: In one example, a method includes establishing a plurality of label switched paths (LSPs) having a common transit network device other than an ingress network device or an egress network device of any of the plurality of LSPs, and, by the transit network device along the plurality of LSPs, detecting a congestion condition on a link along the plurality of LSPs and coupled to the transit network device. The method also includes, responsive to detecting the congestion condition, and by the transit network device, selecting a subset of the plurality of LSPs to evict from the link, wherein the subset comprises less than all of the plurality of LSPs, and updating a forwarding plane of the transit network device to reroute network traffic received for the selected subset of the plurality of the LSPs for forwarding to a next hop on a bypass LSP that avoids the link.

    Abstract translation: 在一个示例中，一种方法包括建立多个标签交换路径（LSP），其具有除了多个LSP中的任一个的入口网络设备或出口网络设备之外的公共中继网络设备，并且通过所述中转网络设备 所述多个LSP检测沿着所述多个LSP的链路上的拥塞状况并耦合到所述中转网络设备。 该方法还包括响应于检测到拥塞状况，以及由转接网络设备选择要从链路中逐出的多个LSP的子集，其中该子集包括小于所有多个LSP，并更新转发 转发网络设备的平面，重新路由接收到的多个LSP的所选子集的网络流量，以转发到避免链路的旁路LSP上的下一跳。

    DYNAMIC END-TO-END NETWORK PATH SETUP ACROSS MULTIPLE NETWORK LAYERS
    8.
    发明申请
    DYNAMIC END-TO-END NETWORK PATH SETUP ACROSS MULTIPLE NETWORK LAYERS 有权
    多个网络层之间的动态端到端网络路径设置

    公开(公告)号：US20150063802A1

    公开(公告)日：2015-03-05

    申请号：US14015505

    申请日：2013-08-30

    Applicant: Juniper Networks, Inc.

    Inventor： Nitin Bahadur ,  Kenneth E. Gray ,  Thomas D. Nadeau ,  Alia K. Atlas

    IPC: H04L12/803 ,  H04L12/723 ,  H04Q11/00

    CPC classification number: H04L47/125 ,  H04L45/04 ,  H04L45/125 ,  H04L45/50 ,  H04L45/62 ,  H04L47/781 ,  H04L47/825 ,  H04L47/829 ,  H04Q11/0066 ,  H04Q2011/0073 ,  H04Q2011/0079

    Abstract: A centralized controller provides dynamic end-to-end network path setup across multiple network layers. In particular, the centralized controller manages end-to-end network path setup that provisions a path at both the transport network layer (e.g., optical) and the service network layer (e.g., IP/MPLS). The centralized controller performs path computation for an optical path at the transport network layer and for a path at the service network layer that transports network traffic on the underlying optical transport path, based on information obtained by the centralized controller from the underlying network components at both layers.

    Abstract translation: 集中式控制器提供跨多个网络层的动态端到端网络路径设置。 特别地，集中式控制器管理在传输网络层（例如光学）和服务网络层（例如，IP / MPLS）两者处提供路径的端到端网络路径建立。 集中式控制器对传输网络层的光路进行路径计算，并根据集中式控制器从底层网络组件获取的信息，在传输网络层的路径上传输网络流量， 层。

    Aggregating network resource allocation information and network resource configuration information
    9.
    发明授权
    Aggregating network resource allocation information and network resource configuration information 有权
    汇总网络资源分配信息和网络资源配置信息

    公开(公告)号：US09461877B1

    公开(公告)日：2016-10-04

    申请号：US14037653

    申请日：2013-09-26

    Applicant: Juniper Networks, Inc.

    Inventor： Thomas D. Nadeau ,  Nitin Bahadur ,  Kenneth E. Gray

    IPC: H04L12/24 ,  H04Q3/00

    CPC classification number: H04L41/042 ,  H04L41/0853 ,  H04L41/0896 ,  H04L41/12 ,  H04Q3/0062

    Abstract: A network device is described that receives information from separate database systems including a physical network inventory system that stores first topology data specifying resources and links within a network and a traffic engineering system that stores second topology data specifying the resources and links that are deployed within the network and data specifying traffic engineered paths configured to forward network traffic through the network. The network device aggregates the received information into a topology resource management system that stores third topology data specifying at least a current role of each of the resources and links. The network device determines a modification to at least one of the traffic engineered paths based on the third topology data, including an adjustment to the current role of at least one of the resources to change the forwarding of the network traffic. The network device outputs provisioning information based on the modification.

    Abstract translation: 描述了从单独的数据库系统接收信息的网络设备，包括存储指定网络内的资源和链路的第一拓扑数据的物理网络库存系统，以及存储指定部署在内部的资源和链路的第二拓扑数据的流量工程系统 网络和数据指定配置为通过网络转发网络流量的流量工程路由。 网络设备将接收的信息聚合到拓扑资源管理系统中，该系统存储指定至少每个资源和链路的当前角色的第三拓扑数据。 网络设备基于第三拓扑数据确定对至少一个业务工程路由的修改，包括调整至少一个资源的当前角色以改变网络业务的转发。 网络设备基于修改输出配置信息。

    Software defined network controller
    10.
    发明授权
    Software defined network controller 有权
    软件定义的网络控制器

    公开(公告)号：US09450817B1

    公开(公告)日：2016-09-20

    申请号：US14042614

    申请日：2013-09-30

    Applicant: Juniper Networks, Inc.

    Inventor： Nitin Bahadur ,  Kenneth E. Gray

    IPC: G06F15/177 ,  H04L12/24 ,  H04L12/725

    CPC classification number: H04L41/0813 ,  H04L41/0806 ,  H04L41/12 ,  H04L45/30 ,  H04L45/50 ,  H04L45/64 ,  H04L65/4084

    Abstract: An extensible software defined network (SDN) controller is described that provides an application-aware framework that enable a variety of different user applications to communicate with the controller and that allows the controller to automatically configure devices in a network based on the needs of the applications. For example, the controller includes a plurality of different northbound interfaces that enable a variety of different user applications to communicate with the controller. The controller also includes multiple southbound protocols for configuring and enabling functionality in network devices based on the communications with the user applications.

    Abstract translation: 描述了可扩展的软件定义网络（SDN）控制器，其提供了一种应用感知框架，其使得各种不同的用户应用能够与控制器进行通信，并且允许控制器基于应用的需要自动配置网络中的设备 。 例如，控制器包括多个不同的北向接口，其允许各种不同的用户应用与控制器通信。 控制器还包括多个南向协议，用于基于与用户应用程序的通信来配置和启用网络设备中的功能。

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