Optical network low delay fault recovery method and system

Abstract

The invention provides an optical network low delay fault recovery method. The optical network low delay fault recovery method comprises detecting a fault node in a network periodically and distinguishing whether the fault node is an intermediate node or an aggregation node; reselecting an aggregation node and obtaining the topology information of an optical network and a grouping network if the fault node is the aggregation node; obtaining a plurality of routes with the maximum resource utilization rate according to the resource utilization rates of a plurality of links in the topology information; establishing a delay graph according to the plurality of routes with the maximum resource utilization rate, calculating delay values of the plurality of routes and selecting the route with the minimum delay value to serve as a final selection route. The invention also provides an optical network low delay fault recovery system which comprises a detection unit, an obtaining unit, a calculation unit and a selection unit. According to the optical network low delay fault recovery method and system, the low delay fault recovery can be achieved by the delay graph based fault recovery method and accordingly the net performance is ensured and meanwhile the recovery delay is reduced.

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...

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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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