公开(公告)号：US20150208147A1

公开(公告)日：2015-07-23

申请号：US14158457

申请日：2014-01-17

Applicant: Cisco Technology, Inc.

Inventor： Giovanni MARTINELLI ,  Jean-Philippe VASSEUR ,  Gabriele Maria GALIMBERTI

IPC: H04Q11/00 ,  H04L12/707 ,  H04L12/703 ,  H04B10/038

CPC classification number: H04B10/038 ,  H04J14/0221 ,  H04J14/0293 ,  H04L45/22 ,  H04L45/28 ,  H04Q11/0005 ,  H04Q11/0066 ,  H04Q11/0067 ,  H04Q2011/0011 ,  H04Q2011/0016 ,  H04Q2011/0081

Abstract: The embodiments disclosed herein provide fast recovery of a network signal path by, in the event of a failure or unacceptable degradation in a signal in the original network path, diverting the optical signal passing through the network to a preselected bypass optical path which is maintained in a warm or operational state. The optical elements on the bypass optical path are available network resources which may, during part or all of the time the bypass path is designated for a node in the primary optical path, be in use to transmit other optical signals in the network. By maintaining the resources in the designated bypass path in a warm or operating state, fast rerouting and recovery of an interrupted signal is possible.

Abstract translation: 本文公开的实施例通过在原始网络路径中的信号的故障或不可接受的劣化的情况下提供网络信号路径的快速恢复，将通过网络的光信号转移到保持在预定的旁路光路中 一个暖或运行状态。 旁路光路上的光学元件是可用的网络资源，其可以在为主光路中的节点指定旁路路径的部分或全部时间期间用于在网络中传输其他光信号。 通过将指定旁路路径中的资源维持在暖或运行状态，可以快速重新路由和恢复中断的信号。

公开(公告)号：US20190334650A1

公开(公告)日：2019-10-31

申请号：US15961903

申请日：2018-04-25

Applicant: Cisco Technology, Inc.

Inventor： Randy ZHANG ,  Rajiv ASATI ,  Gabriele Maria GALIMBERTI

IPC: 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.