公开(公告)号：US20240430004A1

公开(公告)日：2024-12-26

申请号：US18337825

申请日：2023-06-20

Applicant: Cisco Technology, Inc.

Inventor： Domenico La Fauci ,  Andrea Zanardi ,  Lorenzo Galvagni ,  Pietro De Matteis

IPC: H04B10/038

Abstract: A method performed at a controller of an optical network configured with an optical path comprising a series of fiber spans for forwarding traffic: as a background operation to forwarding the traffic along the optical path, generating and storing precomputed optical paths as alternates to the optical path for path restoration by simulating some number of faults impacting the optical path; upon receiving, from the optical network, a path restoration query that indicates actually failed fiber spans, determining availability of a precomputed optical path that avoids the actually failed fiber spans; and when the precomputed optical path is available, sending, to the optical network, a first descriptor of the precomputed optical path to enable a deployment of the precomputed optical path. The method drastically reduces the time of alternate path research in complex meshed networks.

公开(公告)号：US09065565B2

公开(公告)日：2015-06-23

申请号：US13763772

申请日：2013-02-11

Applicant: Cisco Technology, Inc.

Inventor： Giovanni Martinelli ,  Gabriele Galimberti ,  Domenico La Fauci ,  Stefano Aina

IPC: H04B10/00 ,  H04B10/2507 ,  H04J14/02

CPC classification number: H04B10/2507 ,  G06F2212/6022 ,  H04J14/0271

Abstract: Techniques are presented herein to setup a wavelength on a path from a source node to a destination node. Cross-talk margin information already computed for one or more installed wavelengths is obtained between the source node and destination node. A total margin as a function of the cross-talk margin information is computed. A determination is then made as to whether to perform non-linear impairment validation of the wavelength based on the total margin. These techniques may be generalized to account for coherent and non-coherent portions of a network.

Abstract translation: 这里呈现技术来建立从源节点到目的地节点的路径上的波长。 在源节点和目的地节点之间获得已经为一个或多个安装的波长计算的串扰边缘信息。 计算作为串话保证金信息的函数的总余量。 然后确定是否基于总裕度执行波长的非线性损伤验证。 这些技术可以被概括为考虑网络的相干和非相干部分。

公开(公告)号：US20140226979A1

公开(公告)日：2014-08-14

申请号：US13763772

申请日：2013-02-11

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Giovanni Martinelli ,  Gabriele Galimberti ,  Domenico La Fauci ,  Stefano Aina

IPC: H04B10/2507

CPC classification number: H04B10/2507 ,  G06F2212/6022 ,  H04J14/0271

Abstract: Techniques are presented herein to setup a wavelength on a path from a source node to a destination node. Cross-talk margin information already computed for one or more installed wavelengths is obtained between the source node and destination node. A total margin as a function of the cross-talk margin information is computed. A determination is then made as to whether to perform non-linear impairment validation of the wavelength based on the total margin. These techniques may be generalized to account for coherent and non-coherent portions of a network.

Abstract translation: 这里呈现技术来建立从源节点到目的地节点的路径上的波长。 在源节点和目的地节点之间获得已经为一个或多个安装的波长计算的串扰边缘信息。 计算作为串话保证金信息的函数的总余量。 然后确定是否基于总裕度执行波长的非线性损伤验证。 这些技术可以被概括为考虑网络的相干和非相干部分。