公开(公告)号：US11895234B2

公开(公告)日：2024-02-06

申请号：US17449487

申请日：2021-09-30

Applicant: Juniper Networks, Inc.

Inventor： Jason R. Pascucci ,  Melchior Dirk Frederik Aelmans ,  Gert Grammel

IPC: H04L9/08

CPC classification number: H04L9/0858 ,  H04L9/0825 ,  H04L9/0855 ,  H04L9/0866

Abstract: A node may receive, from a quantum key-distribution (QKD) device, a first message that includes an identifier associated with a key. The node may send, to another node, a second message that includes the identifier and a request to perform at least one task. A node may receive, from the other node, a third message that includes information associated with performance of the at least one task by the other node and information indicating a time of performance. The node may receive, from the QKD device, a fourth message that includes the key and information indicating a time window associated with the quantum key; wherein the fourth message is received after expiration of the time window. The node may process, based on the fourth message, the third message to determine whether the third message is valid and thereby cause one or more actions to be performed.

公开(公告)号：US11240573B2

公开(公告)日：2022-02-01

申请号：US17069157

申请日：2020-10-13

Applicant: Juniper Networks, Inc.

Inventor： Gert Grammel ,  Marcel Wiget

IPC: H04Q11/00 ,  H04B10/079 ,  H04J14/02 ,  H04B10/25 ,  H04L29/06

Abstract: An apparatus includes a first communication interface configured to be communicatively coupled, via an optical line, to a network device that is disposed in an optical network using wavelength division multiplexing (WDM). The apparatus also includes a second communication interface configured to be communicatively coupled to a router via an Ethernet connection. The apparatus also includes a signal generator operatively coupled to the first communication interface and the second communication interface. The signal generator is configured to generate an Ethernet signal representing at least one attribute of the optical line between the first communication interface and the network device. The second communication interface is configured to transmit the Ethernet signal to the router.

公开(公告)号：US20190149896A1

公开(公告)日：2019-05-16

申请号：US15923713

申请日：2018-03-16

Applicant: Juniper Networks, Inc.

Inventor： Gert Grammel ,  Antoni B Przygienda

IPC: H04Q11/00 ,  H04L12/707 ,  H04L12/703

CPC classification number: H04Q11/0003 ,  H04J14/021 ,  H04J14/0269 ,  H04J14/0272 ,  H04J14/0295 ,  H04L41/0654 ,  H04L41/0816 ,  H04L45/22 ,  H04L45/28 ,  H04Q11/0005 ,  H04Q11/0062 ,  H04Q2011/0056 ,  H04Q2011/0073 ,  H04Q2011/0081 ,  H04Q2011/0086 ,  H04Q2011/0092

Abstract: In response to a connectivity disruption in an underlying optical transport ring supporting a routing and packet switching topology, one or more of optical devices of the optical transport ring are modified to establish connectivity between spine nodes in different data centers to reroute communication between at least a subset of the leaf network devices so as to traverse an inter-spine route via the optical modified optical transport ring. That is, in response to a connectivity disruption in a portion of underlying optical transport ring, one or more optical devices within the optical transport ring are modified such that packets between at least a portion of the leaf devices are rerouted along optical paths between at least two of the spine network devices.

公开(公告)号：US10284290B2

公开(公告)日：2019-05-07

申请号：US14871586

申请日：2015-09-30

Applicant: Juniper Networks, Inc.

Inventor： Gert Grammel ,  Domenico Di Mola ,  Steven B. Alleston

IPC: H04B10/038 ,  H04B10/077 ,  H04L12/24 ,  H04L12/707 ,  H04Q11/00 ,  H04J14/02

Abstract: In some examples, a network device comprises one or more processors operably coupled to a memory, and a routing unit configured for execution by the one or more processors to route data traffic on a layer 3 network overlaying an optical transport system; receive optical supervisory channel data for an optical supervisory channel of the optical transport system; determine the optical supervisory channel data indicates an event affecting transmission or detection of a signal transported by a wavelength, the wavelength traversing an optical fiber of the optical transport system and underlying a link of the layer 3 network; and reconfigure, in response to determining the optical supervisory channel data indicates the event, a configuration of the network device to modify routing operations of the network device with respect to the data traffic on the layer 3 network.

公开(公告)号：US10014937B1

公开(公告)日：2018-07-03

申请号：US15067619

申请日：2016-03-11

Applicant: Juniper Networks, Inc.

Inventor： Domenico Di Mola ,  Gert Grammel

IPC: H04L29/06 ,  H04B10/079 ,  H04L7/00

CPC classification number: H04L63/1416 ,  H04B10/85 ,  H04J3/0667 ,  H04J3/14 ,  H04L63/0428 ,  H04L63/061 ,  H04L2463/061

Abstract: A device may receive, via a first optical supervisory channel, a first timing signal from a first network node. The first timing signal may be generated by a first clock, of the first network node, and may be used to synchronize the first clock, of the first network node, and a second clock of a second network node. The device may determine a parameter value based on the first timing signal, and may determine whether the parameter value satisfies a threshold value. The device may selectively transmit, via a second optical supervisory channel, a second timing signal to the second network node based on determining whether the parameter value satisfies the threshold value. The second timing signal may be used to synchronize the second clock, of the second network node, with the first clock of the first network node.

公开(公告)号：US20170093487A1

公开(公告)日：2017-03-30

申请号：US14871586

申请日：2015-09-30

Applicant: Juniper Networks, Inc.

Inventor： Gert Grammel ,  Domenico Di Mola ,  Steven B. Alleston

IPC: H04B10/077 ,  H04B10/038 ,  H04L12/24 ,  H04Q11/00 ,  H04L12/707

CPC classification number: H04B10/0777 ,  H04B10/038 ,  H04B10/0773 ,  H04J14/021 ,  H04J14/0267 ,  H04L41/06 ,  H04L41/0672 ,  H04L45/22 ,  H04Q11/0066 ,  H04Q2011/0073 ,  H04Q2011/0077 ,  H04Q2011/0081

Abstract: In some examples, a network device comprises one or more processors operably coupled to a memory, and a routing unit configured for execution by the one or more processors to route data traffic on a layer 3 network overlaying an optical transport system; receive optical supervisory channel data for an optical supervisory channel of the optical transport system; determine the optical supervisory channel data indicates an event affecting transmission or detection of a signal transported by a wavelength, the wavelength traversing an optical fiber of the optical transport system and underlying a link of the layer 3 network; and reconfigure, in response to determining the optical supervisory channel data indicates the event, a configuration of the network device to modify routing operations of the network device with respect to the data traffic on the layer 3 network.

公开(公告)号：US12244642B1

公开(公告)日：2025-03-04

申请号：US18166762

申请日：2023-02-09

Applicant: Juniper Networks, Inc.

Inventor： Gert Grammel ,  Ajay Kachrani ,  Hao Wang

IPC: H04L29/06 ,  H04L9/40 ,  H04L45/00 ,  H04L45/28 ,  H04L45/60

Abstract: In some examples, a system includes a router device and a first adapter device in communication with the router device. The first adapter device includes processing circuitry configured to: communicate with the router device, wherein the router device is incapable of communicating in accordance with the MACsec protocol. The processing circuitry is further configured to establish an encrypted connection in accordance with the MACsec protocol between the first adapter device and a remote device, determine that the encrypted connection is offline, and output a message to the router device that the encrypted connection is offline. The router device is configured to communicate with the remote device via a second adapter device configured to communicate in accordance with the MACsec protocol and bypass the first adapter device.

公开(公告)号：US11888679B2

公开(公告)日：2024-01-30

申请号：US17032799

申请日：2020-09-25

Applicant: Juniper Networks, Inc.

Inventor： Gert Grammel ,  Jayanthi R ,  Chandrasekhar A

IPC: H04L41/0631 ,  H04L41/069

CPC classification number: H04L41/0631 ,  H04L41/069

Abstract: An example method includes obtaining, by one or more processors, data indicating resource dependencies between a plurality of resources in a network and event dependencies between a plurality of network events and one or more of the plurality of resources; generating a Bayesian model based on resource types of the plurality of resources and event types of the plurality of network events; receiving an indication of a fault in the network; collecting fault data and generating, based on the Bayesian model and the fault data, a plurality of root cause hypotheses for the fault; ordering the plurality of root cause hypotheses based on respective root cause probabilities associated with the plurality of root cause hypotheses; and outputting the ordered plurality of root cause hypotheses.

公开(公告)号：US11617030B2

公开(公告)日：2023-03-28

申请号：US17554764

申请日：2021-12-17

Applicant: Juniper Networks, Inc.

Inventor： Gert Grammel ,  Marcel Wiget

IPC: H04Q11/00 ,  H04B10/079 ,  H04J14/02 ,  H04B10/25 ,  H04L9/40

Abstract: An apparatus includes a first communication interface configured to be communicatively coupled, via an optical line, to a network device that is disposed in an optical network using wavelength division multiplexing (WDM). The apparatus also includes a second communication interface configured to be communicatively coupled to a router via an Ethernet connection. The apparatus also includes a signal generator operatively coupled to the first communication interface and the second communication interface. The signal generator is configured to generate an Ethernet signal representing at least one attribute of the optical line between the first communication interface and the network device. The second communication interface is configured to transmit the Ethernet signal to the router.

公开(公告)号：US11606390B1

公开(公告)日：2023-03-14

申请号：US17217999

申请日：2021-03-30

Applicant: Juniper Networks, Inc.

Inventor： Gert Grammel ,  Ajay Kachrani ,  Hao Wang

IPC: H04L29/06 ,  H04L9/40 ,  H04L45/28 ,  H04L45/60 ,  H04L45/00

Abstract: In some examples, a system includes a router device and a first adapter device in communication with the router device. The first adapter device includes processing circuitry configured to: communicate with the router device, wherein the router device is incapable of communicating in accordance with the MACsec protocol. The processing circuitry is further configured to establish an encrypted connection in accordance with the MACsec protocol between the first adapter device and a remote device, determine that the encrypted connection is offline, and output a message to the router device that the encrypted connection is offline. The router device is configured to communicate with the remote device via a second adapter device configured to communicate in accordance with the MACsec protocol and bypass the first adapter device.