公开(公告)号：US20200336809A1

公开(公告)日：2020-10-22

申请号：US16386309

申请日：2019-04-17

Applicant: Cisco Technology, Inc.

Inventor： Randy Zhang ,  Gabriele Maria Galimberti ,  Stefano Piciaccia ,  Mauro Brunella

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

Abstract: A method for optical restoration in an optical network is provided. A network controller obtains, from one or more optical nodes of an optical network, at least one failure notification indicating a failure of a primary path between a first node and a second node. The network controller forwards to a first set of optical nodes, data-plane parameters for optical components of the first set of optical nodes. The first set of optical nodes include the first node, the second node, and one or more intermediate nodes, and forms a restoration path for the primary path. The data-plane parameters for the optical components are forwarded in parallel to the first set of optical nodes of the restoration path so as to activate the restoration path in parallel. The network controller switches traffic from the primary path to the restoration path.

公开(公告)号：US10771182B2

公开(公告)日：2020-09-08

申请号：US15961903

申请日：2018-04-25

Applicant: Cisco Technology, Inc.

Inventor： Randy Zhang ,  Rajiv Asati ,  Gabriele Maria Galimberti

IPC: H04B10/08 ,  H04B17/00 ,  H04J14/02 ,  H04Q11/00 ,  H04L12/751

Abstract: In one embodiment, a first optical network device includes a controller, and a first network interface, wherein the first network interface is configured to exchange data with a first layer 3 network device, and the controller is configured to obtain at least one optical circuit attribute including an optical circuit distance and/or an optical circuit latency of a first optical circuit in an optical network, and provide the at least one optical circuit attribute to the first layer 3 network device. Related apparatus and methods are also described.

公开(公告)号：US20250080231A1

公开(公告)日：2025-03-06

申请号：US18458413

申请日：2023-08-30

Applicant: Cisco Technology, Inc.

Inventor： Randy Zhang ,  Stefano Binetti ,  Dirk Schroetter ,  Valerio Viscardi

IPC: H04B10/572 ,  H04B10/079

Abstract: In one example embodiment, a wavelength of a first network node is identified for communication over a network with a second network node by sweeping wavelengths of the second network node. A wavelength of the second network node is adjusted based on the wavelength of the first network node to align wavelengths of the first network node and the second network node for communication.

公开(公告)号：US10863255B2

公开(公告)日：2020-12-08

申请号：US16386309

申请日：2019-04-17

Applicant: Cisco Technology, Inc.

Inventor： Randy Zhang ,  Gabriele Maria Galimberti ,  Stefano Piciaccia ,  Mauro Brunella

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

Abstract: A method for optical restoration in an optical network is provided. A network controller obtains, from one or more optical nodes of an optical network, at least one failure notification indicating a failure of a primary path between a first node and a second node. The network controller forwards to a first set of optical nodes, data-plane parameters for optical components of the first set of optical nodes. The first set of optical nodes include the first node, the second node, and one or more intermediate nodes, and forms a restoration path for the primary path. The data-plane parameters for the optical components are forwarded in parallel to the first set of optical nodes of the restoration path so as to activate the restoration path in parallel. The network controller switches traffic from the primary path to the restoration path.