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。

公开(公告)号：US20150200838A1

公开(公告)日：2015-07-16

申请号：US14152942

申请日：2014-01-10

Applicant: Juniper Networks, Inc.

Inventor： Thomas D. Nadeau ,  Kenneth E. Gray

IPC: H04L12/751 ,  H04B10/27 ,  H04L12/723

CPC classification number: H04L45/02 ,  H04B10/27 ,  H04L45/124 ,  H04L45/306 ,  H04L45/38 ,  H04L45/50

Abstract: In general, techniques are described for improving network path computation for requested paths that include a chain of service points that provide network services to traffic flows traversing the requested path through a network along the service chain. In some examples, a controller network device receives a request for network connectivity between a service entry point and a service exit point for a service chain for application to packet flows associated to the service chain. The device, for each pair of the service points in the particular order and using the active topology information, computes at least one end-to-end sub-path through the sub-network connecting the pair of the service points according to a constraint and computes, using the at least one end-to-end sub-path for each pair of the service points, a service path between the service entry point and the service exit point for the service chain.

Abstract translation: 通常，描述了用于改进所请求路径的网络路径计算的技术，所述路径包括为通过沿服务链的网络遍历所请求的路径的业务流提供网络服务点的服务点链。 在一些示例中，控制器网络设备接收用于服务链的服务入口点和服务出口点之间的网络连接请求，以应用于与服务链相关联的分组流。 按照特定顺序对每对服务点进行设备并使用主动拓扑信息，根据约束计算通过连接该对服务点的子网络的至少一个端对端子路径，以及 对于服务点的每一对，使用至少一个端到端子路径计算服务入口点和服务链的服务出口点之间的服务路径。

公开(公告)号：US09413634B2

公开(公告)日：2016-08-09

申请号：US14152942

申请日：2014-01-10

Applicant: Juniper Networks, Inc.

Inventor： Thomas D. Nadeau ,  Kenneth E. Gray

IPC: H04L12/28 ,  H04L12/751 ,  H04L12/721 ,  H04L12/725 ,  H04B10/27 ,  H04L12/723

CPC classification number: H04L45/02 ,  H04B10/27 ,  H04L45/124 ,  H04L45/306 ,  H04L45/38 ,  H04L45/50

Abstract: In general, techniques are described for improving network path computation for requested paths that include a chain of service points that provide network services to traffic flows traversing the requested path through a network along the service chain. In some examples, a controller network device receives a request for network connectivity between a service entry point and a service exit point for a service chain for application to packet flows associated to the service chain. The device, for each pair of the service points in the particular order and using the active topology information, computes at least one end-to-end sub-path through the sub-network connecting the pair of the service points according to a constraint and computes, using the at least one end-to-end sub-path for each pair of the service points, a service path between the service entry point and the service exit point for the service chain.

Abstract translation: 通常，描述了用于改进所请求的路径的网络路径计算的技术，所述路径包括向服务链通过网络遍历所请求的路径的业务流提供网络服务点的服务点链。 在一些示例中，控制器网络设备接收用于服务链的服务入口点和服务出口点之间的网络连接请求，以应用于与服务链相关联的分组流。 按照特定顺序对每对服务点进行设备并使用主动拓扑信息，根据约束计算通过连接该对服务点的子网络的至少一个端对端子路径，以及 对于服务点的每一对，使用至少一个端到端子路径计算服务入口点和服务链的服务出口点之间的服务路径。

公开(公告)号：US09258238B2

公开(公告)日：2016-02-09

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: H04B10/00 ,  H04L12/803 ,  H04Q11/00 ,  H04L12/723 ,  H04L12/721 ,  H04L12/911 ,  H04L12/715

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。

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。