公开(公告)号：US08693374B1

公开(公告)日：2014-04-08

申请号：US13842453

申请日：2013-03-15

Applicant: Juniper Networks, Inc.

Inventor： James M. Murphy ,  Abhijit K. Choudhury ,  Pradeep Sindhu ,  Ina Minei ,  Jayabharat Boddu

IPC: H04L12/28

CPC classification number: H04L47/12 ,  H04L12/28 ,  H04L41/0654 ,  H04L41/12 ,  H04L43/10 ,  H04L45/42 ,  H04L45/50

Abstract: An access network is described in which a centralized controller provides seamless end-to-end service from a core-facing edge of a service provider network through aggregation and access infrastructure out to access nodes located proximate to the subscriber devices. The controller operates to provide a central configuration point for configuring aggregation nodes (AGs) of a network of the service provider so as to provide transport services to transport traffic between access nodes (AXs) and edge routers on opposite borders of the network.

Abstract translation: 描述了一种接入网络，其中集中式控制器通过聚合和接入基础设施从位于接近用户设备的接入节点提供从服务提供商网络的面向核心边缘的无缝端到端服务。 控制器操作以提供用于配置服务提供商的网络的聚合节点（AG）的中央配置点，以便提供传输服务以在网络的相对边界上的接入节点（AX）和边缘路由器之间传输业务。

公开(公告)号：US09350661B2

公开(公告)日：2016-05-24

申请号：US14231350

申请日：2014-03-31

Applicant: Juniper Networks, Inc.

Inventor： James M. Murphy ,  Abhijit K. Choudhury ,  Pradeep Sindhu ,  Ina Minei ,  Jayabharat Boddu

IPC: H04L12/801 ,  H04L12/28 ,  H04L12/24 ,  H04L12/717 ,  H04L12/723

CPC classification number: H04L47/12 ,  H04L12/28 ,  H04L41/0654 ,  H04L41/12 ,  H04L43/10 ,  H04L45/42 ,  H04L45/50

Abstract: An access network is described in which a centralized controller provides seamless end-to-end service from a core-facing edge of a service provider network through aggregation and access infrastructure out to access nodes located proximate the subscriber devices. The controller operates to provide a central configuration point for configuring aggregation nodes (AGs) of a network of the service provider so as to provide transport services to transport traffic between access nodes (AXs) and edge routers on opposite borders of the network.

Abstract translation: 描述了一种接入网络，其中集中式控制器通过聚合和接入基础设施向位于接近用户设备的接入节点提供从服务提供商网络的面向核心边缘的无缝端到端服务。 控制器操作以提供用于配置服务提供商的网络的聚合节点（AG）的中央配置点，以便提供传输服务以在网络的相对边界上的接入节点（AX）和边缘路由器之间传输业务。

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。

公开(公告)号：US08711855B1

公开(公告)日：2014-04-29

申请号：US13842796

申请日：2013-03-15

Applicant: Juniper Networks, Inc.

Inventor： James M. Murphy ,  Abhijit K. Choudhury ,  Pradeep Sindhu ,  Ina Minei ,  Jayabharat Boddu ,  David M. Katz ,  Kireeti Kompella

IPC: H04L12/28

CPC classification number: H04L47/12 ,  H04L12/28 ,  H04L41/0654 ,  H04L41/12 ,  H04L43/10 ,  H04L45/42 ,  H04L45/50

Abstract: An access network is described in which a centralized controller provides seamless end-to-end service from a core-facing edge of a service provider network through aggregation and access infrastructure out to access nodes located proximate to the subscriber devices. The controller operates to provide a central configuration point for configuring aggregation nodes (AGs) of a network of the service provider so as to provide transport services to transport traffic between access nodes (AXs) and edge routers on opposite borders of the network.

Abstract translation: 描述了一种接入网络，其中集中式控制器通过聚合和接入基础设施从位于接近用户设备的接入节点提供从服务提供商网络的面向核心边缘的无缝端到端服务。 控制器操作以提供用于配置服务提供商的网络的聚合节点（AG）的中央配置点，以便提供传输服务以在网络的相对边界上的接入节点（AX）和边缘路由器之间传输业务。

公开(公告)号：US09985875B1

公开(公告)日：2018-05-29

申请号：US14871492

申请日：2015-09-30

Applicant: Juniper Networks, Inc.

Inventor： Harsha Srinath ,  Sanjay Agrawal ,  Sankar Ramamoorthi ,  Gopi Krishna ,  Juan-Antonio Bernal Van der Ven ,  Shauli Gal ,  Ina Minei

IPC: H04L12/703 ,  H04L12/707 ,  H04L12/713

CPC classification number: H04L45/28 ,  H04L45/22 ,  H04L45/586

Abstract: A system and method for handling critical events in service delivery gateways. Events are defined that cause a transition from a master redundancy state to a standby redundancy state in service delivery gateways and a plurality of signal-routes are stored. Each signal-route is associated with one or more of the defined events. A first defined event is detected in the first service delivery gateway and causes a transition from the first master redundancy state to the first standby redundancy state in the first service delivery gateway and a change in a first signal-route from the plurality of signal-routes in the first service delivery gateway. The change in the first signal-route is advertised and a second service delivery gateway transitions from the first standby redundancy state to the first master redundancy state.

公开(公告)号：US09350654B1

公开(公告)日：2016-05-24

申请号：US14023396

申请日：2013-09-10

Applicant: Juniper Networks, Inc.

Inventor： Hannes Gredler ,  Ina Minei ,  Zhaohui Zhang

IPC: H04L12/723

CPC classification number: H04L45/507

Abstract: Techniques of this disclosure enable loop protection for networks that utilize hop-by-hop routing, such as networks that utilize multi-protocol label switching (MPLS) label distribution and interior gateway protocol (IGP) routing. As described herein, the techniques provide protection from any small transient loops that may emerge due to link failure or other topology change events in networks that utilize hop-by-hop routing techniques.

Abstract translation: 该公开技术使得能够利用逐跳路由的网络进行环路保护，例如利用多协议标签交换（MPLS）标签分配和内部网关协议（IGP）路由的网络。 如本文所述，这些技术为由于链路故障或利用逐跳路由技术的网络中的其他拓扑变化事件而可能出现的任何小的瞬态环路提供保护。

公开(公告)号：US20150146536A1

公开(公告)日：2015-05-28

申请号：US14152137

申请日：2014-01-10

Applicant: Juniper Networks, Inc.

Inventor： Ina Minei ,  Pedro R. Marques

IPC: H04L12/803 ,  H04L12/723

CPC classification number: H04L45/507 ,  H04L45/02

Abstract: In general, techniques are described for automated traffic mapping for multi-protocol label switching (MPLS) networks. A network device comprising a processor and an interface card may perform the techniques. The processor may generate an advertisement that conforms to a routing protocol. The advertisement may advertise a mapping between a network flow and a label switched path (LSP) tag. The processor may also generate a communication associating the label switched path tag with an LSP. The interface card may transmit the advertisement to a head-end label edge router that admits traffic into the LSP identified by the LSP tag. The interface card may also transmit the communication to the label edge router such that the label edge router is able to process the communication in conjunction with the advertisement to map the network flow to the LSP identified by the LSP tag.

Abstract translation: 通常，描述了用于多协议标签交换（MPLS）网络的自动流量映射的技术。 包括处理器和接口卡的网络设备可以执行这些技术。 处理器可以生成符合路由协议的广告。 广告可以通告网络流和标签交换路径（LSP）标签之间的映射。 处理器还可以生成将标签交换路径标签与LSP相关联的通信。 接口卡可以将广告发送到接收到由LSP标签标识的LSP中的流量的前端标签边缘路由器。 接口卡还可以将通信发送到标签边缘路由器，使得标签边缘路由器能够处理与广告结合的通信，以将网络流映射到由LSP标签识别的LSP。

公开(公告)号：US08953500B1

公开(公告)日：2015-02-10

申请号：US13853966

申请日：2013-03-29

Applicant: Juniper Networks, Inc.

Inventor： Yimin Shen ,  Ina Minei ,  Raveendra Torvi

IPC: H04L12/28 ,  H04L12/761 ,  H04L1/00

CPC classification number: H04L45/16 ,  H04L45/46

Abstract: Techniques are described for establishing a point-to-multipoint (P2MP) label switched path (LSP) using a branch node-initiated signaling model in which branch node to leaf (B2L) sub-LSPs are signaled and utilized to form a P2MP LSP. The techniques described herein provides a scalable solution in which the number of sub-LSPs for which the source node or any given branch node need maintain state is equal to the number of physical data flows output from that node to downstream nodes, i.e., the number of output interfaces used for the P2MP LSP by that node to output data flows to downstream nodes. As such, unlike the conventional source node-initiated model in which each node maintains state for sub-LSPs that service each of the leaf nodes downstream from the device, the size and scalability of a P2MP LSP is no longer bound to the number of leaves that are downstream from that node.

Abstract translation: 描述了使用分支节点发起的信令模型来建立点对多点（P2MP）标签交换路径（LSP）的技术，其中分支节点到叶（B2L）子LSP被用信号通知并用于形成P2MP LSP。 本文描述的技术提供了可扩展解决方案，其中源节点或任何给定分支节点需要维护状态的子LSP的数量等于从该节点输出到下游节点的物理数据流的数量，即数量 由该节点用于P2MP LSP的输出接口输出到下游节点的数据流。 因此，与传统的源节点发起的模式不同，其中每个节点维护为设备下游的每个叶节点提供服务的子LSP的状态，P2MP LSP的大小和可扩展性不再限于叶数 这是该节点的下游。

公开(公告)号：US20140211615A1

公开(公告)日：2014-07-31

申请号：US14231350

申请日：2014-03-31

Applicant: Juniper Networks, Inc.

Inventor： James M. Murphy ,  Abhijit K. Choudhury ,  Pradeep Sindhu ,  Ina Minei ,  Jayabharat Boddu

IPC: H04L12/24 ,  H04L12/801

CPC classification number: H04L47/12 ,  H04L12/28 ,  H04L41/0654 ,  H04L41/12 ,  H04L43/10 ,  H04L45/42 ,  H04L45/50

Abstract: An access network is described in which a centralized controller provides seamless end-to-end service from a core-facing edge of a service provider network through aggregation and access infrastructure out to access nodes located proximate the subscriber devices. The controller operates to provide a central configuration point for configuring aggregation nodes (AGs) of a network of the service provider so as to provide transport services to transport traffic between access nodes (AXs) and edge routers on opposite borders of the network.

Abstract translation: 描述了一种接入网络，其中集中式控制器通过聚合和接入基础设施向位于接近用户设备的接入节点提供从服务提供商网络的面向核心边缘的无缝端到端服务。 控制器操作以提供用于配置服务提供商的网络的聚合节点（AG）的中央配置点，以便提供传输服务以在网络的相对边界上的接入节点（AX）和边缘路由器之间传输业务。

公开(公告)号：US10193801B2

公开(公告)日：2019-01-29

申请号：US14152137

申请日：2014-01-10

Applicant: Juniper Networks, Inc.

Inventor： Ina Minei ,  Pedro R. Marques

IPC: H04L12/723 ,  H04L12/751

Abstract: In general, techniques are described for automated traffic mapping for multi-protocol label switching (MPLS) networks. A network device comprising a processor and an interface card may perform the techniques. The processor may generate an advertisement that conforms to a routing protocol. The advertisement may advertise a mapping between a network flow and a label switched path (LSP) tag. The processor may also generate a communication associating the label switched path tag with an LSP. The interface card may transmit the advertisement to a head-end label edge router that admits traffic into the LSP identified by the LSP tag. The interface card may also transmit the communication to the label edge router such that the label edge router is able to process the communication in conjunction with the advertisement to map the network flow to the LSP identified by the LSP tag.