Service recovering method, system and node device

Abstract

The embodiment of the invention discloses a service recovering method, belonging to the technical field of network communications. The method comprises the following steps: a node device receives a recovery path creation request, and the recovery path creation request carries the recovery path number corresponding to the service to be recovered; the node device acquires preset recovery path information corresponding to the service and the current usable time slot according to the recovery path number; the node device judges whether the node device is an end node of the service according to the recovery path information; if the node device is the end node of the service, the node device configures at least two recovery paths according to the current usable time slot, establishes the cross connection between the at least two recovery paths and sends the recovery path creation request to downstream nodes according to the recovery path information. The embodiment of the invention also discloses a service recovering system and a node device. Through the technical scheme provided by the embodiment of the invention, the service recovering speed can be quickened, and the system recourses are effectively saved.

Description

technical field [0001] The invention relates to the technical field of network communication, in particular to a service recovery method, system and node equipment. Background technique [0002] The optical transport network (Optical Transport Network, OTN) technology is a new generation of standardized digital transmission architecture, which is used to transmit correspondingly adapted payloads on the optical fiber transmission network. [0003] OTN defines the electrical layer encapsulation structure. Client signals need to be mapped to an overhead processing unit (Overhead Processing Unit, OPU). The OPU can be encapsulated into an optical channel data unit (Optical channel Data Unit, ODU). ODU can be encapsulated into an Optical Channel Transport Unit (Optical ChannelTransport Unit, OTU), or multiple low-order ODUs (low-rate ODUs) are multiplexed into one high-order ODU (high-speed ODU), and the high-order ODUs are repackaged To an OTU, the OTU can be transmitted using o...

AI Technical Summary

Problems solved by technology

[0013] The inventor found in the process of practicing the existing technology that the existing business recovery method requires the intermediate node to parse the complicated Path message and forward the Path message, which consumes more system resources and leads to a slow business recovery speed

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