Optical network low-latency fault recovery method and system

Abstract

The invention provides a low-latency fault recovery method for an optical network. The method includes: regularly detecting faulty nodes in the network, and distinguishing the faulty node as an intermediate node or a converging node; if the faulty node is a converging node, reselecting node, and obtain the topology information of the optical network and the packet network; obtain multiple paths with the largest resource utilization rate according to the resource utilization rate of multiple links in the topology information; establish according to the multiple paths with the maximum resource utilization rate and calculate the delay values ​​of the multiple paths, and select the path with the smallest delay value as the final selected path. The invention also provides an optical network low-delay fault recovery system, which includes a detection unit, an acquisition unit, a calculation unit and a selection unit. The invention can realize low-delay fault recovery through the fault recovery method based on the time-delay graph, and reduce recovery time delay while ensuring network performance.

Description

technical field [0001] The invention relates to the technical field of network communication, in particular to a method and system for recovering from an optical network low-delay fault. Background technique [0002] How to complete user services that meet the optimization goals in the network has become one of the important issues in the field of optical networks. In practical applications, optimization objectives include several types, such as resource efficiency, network bandwidth, service quality, energy efficiency, and delay. Among them, the optimization objective of low latency is of great help to operators in pursuing service quality and reducing processing delay. [0003] In traditional networks, since the optical network and the packet network are operated independently by different manufacturers and departments, the delay problem in the current network is only considered in a single network technology scenario. In a mixed network scenario, such as an optical networ...

AI Technical Summary

Problems solved by technology

[0003] In traditional networks, since the optical network and the packet network are operated independently by different manufacturers and departments, the delay problem in the current network is only considered in a single network technology scenario. In a mixed network scenario, such as an optical network carrying packets The delay problem of the network scene is not involved

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