公开(公告)号：US09973836B1

公开(公告)日：2018-05-15

申请号：US15067806

申请日：2016-03-11

Applicant: Juniper Networks, Inc.

Inventor： Massimiliano Salsi ,  Domenico Di Mola ,  Gert Grammel

IPC: H04J14/00 ,  H04Q11/00

CPC classification number: H04Q11/0071 ,  H04Q2011/0009 ,  H04Q2011/0032

Abstract: A method may include causing a signal to be transmitted that includes a plurality of wavelengths. The signal may be transmitted via an optical fiber that is associated with a particular wavelength. The particular wavelength may be included in the plurality of wavelengths. The method may include filtering the signal, based on the particular wavelength, to generate a filtered signal. The filtered signal may include the particular wavelength. The method may include detecting the filtered signal in association with the optical fiber. The method may include determining the particular wavelength based on the filtered signal. The method may include storing or providing information identifying at least one of the particular wavelength, the optical fiber, or a transmitter that transmitted the signal.

公开(公告)号：US09473372B1

公开(公告)日：2016-10-18

申请号：US14936382

申请日：2015-11-09

Applicant: Juniper Networks, Inc.

Inventor： Gert Grammel ,  Chien Yu Li ,  Theodore X. Qian

IPC: H04L12/26 ,  H04L12/751 ,  H04L29/06

CPC classification number: H04L43/0811 ,  H04L43/06 ,  H04L43/0829 ,  H04L43/10 ,  H04L45/026 ,  H04L67/141 ,  H04L67/142 ,  H04L67/145 ,  H04L67/2861 ,  H04L67/42

Abstract: In general, techniques are described for delegating responsibility for performing a connectivity protocol from one or more endpoint devices to network infrastructure situated along a network forwarding path connecting the endpoint devices. In some examples, an intermediate network device includes a connectivity protocol module of control unit that operates a connectivity protocol session on behalf of a server, wherein the server exchanges application data with the client using an application-layer communication session with the client. The connectivity protocol module monitors connectivity for the application-layer communication session with the connectivity protocol session by exchanging connectivity protocol messages for the connectivity protocol session with the client to determine a connectivity status for the communication session. The connectivity protocol module updates the server with the connectivity status for the communication session by sending a summary report message that includes the connectivity status for the communication session to the server.

公开(公告)号：US20160285545A1

公开(公告)日：2016-09-29

申请号：US15181118

申请日：2016-06-13

Applicant: Juniper Networks, Inc.

Inventor： Hans-Juergen W. Schmidtke ,  Gert Grammel

IPC: H04B10/038 ,  H04J14/02 ,  H04Q11/00 ,  H04L29/08

CPC classification number: H04B10/038 ,  H04J14/021 ,  H04J14/0223 ,  H04J14/0257 ,  H04J14/0268 ,  H04J14/0283 ,  H04L45/02 ,  H04L45/28 ,  H04L45/42 ,  H04L45/62 ,  H04L69/324 ,  H04L69/325 ,  H04Q11/0062 ,  H04Q11/0066 ,  H04Q2011/0081

Abstract: Techniques for providing closed-loop control and predictive analytics in packet-optical networks are described. For example, an integrated, centralized controller provides tightly-integrated, closed-loop control over switching and routing services and the underling optical transport system of a communication network. In one implementation, the controller includes an analytics engine that applies predictable analytics to real-time status information received from a monitoring subsystem distributed throughout the underlying optical transport system. Responsive to the status information, the analytics engine applies rules to adaptively and proactively identify current or predicted topology-changing events and, responsive to those events, maps reroutes packet flows through a routing/switching network and control and, based on any updated bandwidth requirements due to topology changes, dynamically adjusts allocation and utilization of the optical spectrum and wavelengths within the underlying optical transport system.

Abstract translation: 描述了在分组光网络中提供闭环控制和预测分析的技术。 例如，集成的集中控制器提供对交换和路由服务以及通信网络的下层光传输系统的紧密集成的闭环控制。 在一个实现中，控制器包括分析引擎，该分析引擎将预测分析应用于从分布在整个底层光传输系统中的监控子系统接收的实时状态信息。 响应于状态信息，分析引擎应用规则来自适应地主动识别当前或预测的拓扑变化事件，并且响应于这些事件，映射通过路由/交换网络重新路由分组流并且基于任何更新的带宽需求 由于拓扑变化，动态调整底层光传输系统内的光谱和波长的分配和利用。

公开(公告)号：US20160182982A1

公开(公告)日：2016-06-23

申请号：US14575662

申请日：2014-12-18

Applicant: Juniper Networks, Inc.

Inventor： Hans-Juergen W. Schmidtke ,  Gert Grammel

IPC: H04Q11/00

CPC classification number: H04J14/0268 ,  H04J14/021 ,  H04J14/0257 ,  H04J14/0283 ,  H04L45/38 ,  H04L45/42 ,  H04L45/62

Abstract: Techniques for providing closed-loop control and predictive analytics in packet-optical networks are described. For example, an integrated centralized controller is described that provides tightly-integrated, closed-loop control over components of a routing/switching network (e.g., IP/MPLS) and also the underling optical transport system, including routing wavelength and spectrum assignment. The controller adaptively and proactively maps packet flows into network resources of a routing/switching network and control, based on the mapping, allocation and utilization of optical spectrum and wavelengths within the optical transport system underlying the routing and switching network.

Abstract translation: 描述了在分组光网络中提供闭环控制和预测分析的技术。 例如，描述了集成集中控制器，其提供对路由/交换网络（例如IP / MPLS）以及下层光传输系统的组件的紧密集成的闭环控制，包括路由波长和频谱分配。 控制器基于路由和交换网络下的光传输系统内的光谱和波长的映射，分配和利用，自适应地主动地将分组流映射到路由/交换网络的网络资源和控制中。

公开(公告)号：US09369200B1

公开(公告)日：2016-06-14

申请号：US14576112

申请日：2014-12-18

Applicant: Juniper Networks, Inc.

Inventor： Hans-Juergen W. Schmidtke ,  Gert Grammel

IPC: H04B10/00 ,  H04B10/07 ,  H04B10/038 ,  H04Q11/00

CPC classification number: H04B10/038 ,  H04J14/021 ,  H04J14/0223 ,  H04J14/0257 ,  H04J14/0268 ,  H04J14/0283 ,  H04L45/02 ,  H04L45/28 ,  H04L45/42 ,  H04L45/62 ,  H04L69/324 ,  H04L69/325 ,  H04Q11/0062 ,  H04Q11/0066 ,  H04Q2011/0081

Abstract: Techniques for providing closed-loop control and predictive analytics in packet-optical networks are described. For example, an integrated, centralized controller provides tightly-integrated, closed-loop control over switching and routing services and the underling optical transport system of a communication network. In one implementation, the controller includes an analytics engine that applies predictable analytics to real-time status information received from a monitoring subsystem distributed throughout the underlying optical transport system. Responsive to the status information, the analytics engine applies rules to adaptively and proactively identify current or predicted topology-changing events and, responsive to those events, maps reroutes packet flows through a routing/switching network and control and, based on any updated bandwidth requirements due to topology changes, dynamically adjusts allocation and utilization of the optical spectrum and wavelengths within the underlying optical transport system.

Abstract translation: 描述了在分组光网络中提供闭环控制和预测分析的技术。 例如，集成的集中控制器提供对交换和路由服务以及通信网络的下层光传输系统的紧密集成的闭环控制。 在一个实现中，控制器包括分析引擎，该分析引擎将预测分析应用于从分布在整个底层光传输系统中的监控子系统接收的实时状态信息。 响应于状态信息，分析引擎应用规则来自适应地主动识别当前或预测的拓扑变化事件，并且响应于这些事件，映射通过路由/交换网络重新路由分组流并且基于任何更新的带宽需求 由于拓扑变化，动态调整底层光传输系统内的光谱和波长的分配和利用。

公开(公告)号：US09077478B1

公开(公告)日：2015-07-07

申请号：US14575637

申请日：2014-12-18

Applicant: Juniper Networks, Inc.

Inventor： Hans-Juergen W. Schmidtke ,  Gert Grammel

IPC: H04J14/00 ,  H04J14/02 ,  H04Q11/00

CPC classification number: H04J14/0268 ,  H04J14/0257 ,  H04J2203/0055 ,  H04J2203/0057 ,  H04J2203/0058 ,  H04J2203/0098 ,  H04Q2011/0075 ,  H04Q2011/0086

Abstract: Techniques are described for wavelength and spectrum assignment within a packet-optical transport system. A controller, for example, dynamically controls wavelength and spectrum assignment to suppress or generally avoid optical effects that can degrade communication performance. For example, the controller provides closed-loop control over dynamic partitioning of the spectral range of an optical transport system into channel groups and assignment of the groups to respective packet-optical transport devices based on current or future bandwidth requirements at each device. Moreover, for each packet-optical transport device, the controller controls assignment of individual wavelengths within each channel group so as to balance channel utilization around a center of the spectral range associated with each channel group and to maintain spectral separation of the channels within the channel group.

Abstract translation: 描述了在分组光传输系统内的波长和频谱分配的技术。 控制器例如动态地控制波长和频谱分配以抑制或通常避免可能降低通信性能的光学效应。 例如，控制器提供对光传输系统的光谱范围的动态划分到信道组的动态划分的闭环控制，以及基于每个设备上的当前或未来带宽要求将组分配给相应的分组 - 光传输设备。 此外，对于每个分组光传输设备，控制器控制每个信道组内的各个波长的分配，以平衡与每个信道组相关联的频谱范围的中心周围的信道利用，并维持信道在信道内的频谱分离 组。

公开(公告)号：US12056000B1

公开(公告)日：2024-08-06

申请号：US17652549

申请日：2022-02-25

Applicant: Juniper Networks, Inc.

Inventor： Jerry Kawata ,  Manish Talwar ,  Avanthi Boyapati ,  Ajay Kachrani ,  Gert Grammel ,  Manjunath Ramappa Tahasildar ,  Harshit Sharma

IPC: G06F11/00 ,  G06F11/07 ,  G06F11/30 ,  G06F11/34

CPC classification number: G06F11/079 ,  G06F11/0793 ,  G06F11/3075 ,  G06F11/3476

Abstract: In some implementations, a device may obtain a log file that includes a plurality of log entries. The device may identify a sequence of log entries, of the plurality of log entries, that are associated with a resource. The device may process the sequence of log entries to generate a sequence of log templates. The device may process the sequence of log templates to identify an anomaly associated with the sequence of log templates. The device may determine, based on the anomaly associated with the sequence of log templates, an anomaly associated with the sequence of log entries. The device may perform, based on the anomaly associated with the sequence of log entries, one or more actions.

公开(公告)号：US20240223589A1

公开(公告)日：2024-07-04

申请号：US18148762

申请日：2022-12-30

Applicant: Juniper Networks, Inc.

Inventor： Gert Grammel ,  Kieran Gerald McPeake

IPC: H04L9/40

CPC classification number: H04L63/1433 ,  H04L63/1416 ,  H04L63/1425

Abstract: This disclosure describes techniques that include determining a trust score for a network entity; identifying at least one weakness of the network entity, based on the determined trust score; determining a set of remediation actions for addressing the at least one weakness; determining, for each remediation action of the set of remediation actions, an expected amount of work associated with the remediation action; selecting a remediation action from the set of remediation actions, based on the determining, for each remediation action, the expected amount of work associated with the remediation action; and performing an operation associated with at least a portion of the selected remediation action.

公开(公告)号：US20220286394A1

公开(公告)日：2022-09-08

申请号：US17752096

申请日：2022-05-24

Applicant: Juniper Networks, Inc.

Inventor： Manish Talwar ,  Ajay Kachrani ,  Gert Grammel ,  Hao Wang ,  Tanweer Biswas

IPC: H04L45/74 ,  H04L45/02 ,  H04L9/40 ,  H04L69/164 ,  H04L69/22

Abstract: Disclosed embodiments utilize a layer three and/or layer four protocol to collect physical layer properties along a multi-hop network path between a source node and a destination node. The use of a layer three or layer four protocol provides an ability to span multiple links or networks between the source node and destination node, while also collecting the physical layer properties. Once physical layer properties along a network path can be understood, decisions relating to the configuration of the network path and/or whether to communicate via the network path are improved.

公开(公告)号：US20220103551A1

公开(公告)日：2022-03-31

申请号：US17038222

申请日：2020-09-30

Applicant: Juniper Networks, Inc.

Inventor： Manish Talwar ,  Ajay Kachrani ,  Gert Grammel ,  Hao Wang ,  Tanweer Biswas

IPC: H04L29/06 ,  H04L29/12 ,  H04L12/26 ,  H04L12/24 ,  H04L12/707

Abstract: Embodiments improve error detection and recovery in media access control security sessions. A MACsec session is torn down after three liveness time intervals elapse without receiving a MACsec key exchange protocol data unit (MKPDU) from a remote peer. This delay between a cessation of effective network communication over the MACsec session and the expiration of the three “liveness” intervals results in increased packet loss and an increased network convergence time as a network continues to route/forward data over the MACsec session for a period of time after the MACsec session has entered secure block mode. To solve this problem, embodiments define a new alarm, called a MACsec link alert, which is raised earlier than a MACsec session timeout generated by traditional embodiments. The MACsec link alert is raised, by at least some embodiments, after a failure to successfully receive an MKPDU from the remote peer after a single MACsec “liveness” timeout interval elapses.