公开(公告)号：EP3499813A1

公开(公告)日：2019-06-19

申请号：EP16916455.5

申请日：2016-09-21

Applicant: Huawei Technologies Co., Ltd.

Inventor： ZHENG, Haomian ,  ZHENG, Yu ,  BUSI, Italo ,  TAN, Qinfen ,  LU, Qingcong

IPC: H04L12/707 ,  H04L12/703 ,  H04Q11/00 ,  H04J3/00

Abstract: The present invention discloses a protection switching method and a node. The method includes: receiving, by an intermediate node, a first protection switching request message sent by an upstream neighboring node, where the first protection switching request message is used to request to activate a first protection path, and the intermediate node is a node on the first protection path; determining, by the intermediate node, that the first protection path needs to occupy N1 timeslots, and selecting a first group of timeslots for the first protection path from N2 available timeslots in a preset order, where a timeslot quantity of the first group of timeslots is N1, the N2 available timeslots are available timeslots included in a link between the intermediate node and a downstream neighboring node, and N2 is greater than or equal to N1; and sending, by the intermediate node, a second protection switching request message to the downstream neighboring node, where the second protection switching request message is used to request the downstream neighboring node to complete a cross-connection, on the first protection path, between the downstream neighboring node and the intermediate node based on the first group of timeslots. Use of the present invention may improve timeslot resource utilization.