Optical network fault handling method and apparatus

Abstract

Embodiments of the present invention provide an optical network fault handling method and apparatus. The method comprises the steps of when a faulty link exists in an optical network, acquiring topology information of the optical network and traffic of each link, and generating an optical network complement graph including a bandwidth of each link and cost of each link, wherein the optical network complement graph further includes: when the traffic of the link is greater than the bandwidth of the link, the cost of the link is preset super negative cost; according to the complement graph, searching super negative cost loops formed by negative cost, super negative cost and / or positive cost links in the complement graph; according to the super negative cost loops, positioning the faulty link in the optical network; and according to the faulty link, migrating traffic of the faulty link to other normal links in the optical network till no super negative cost loop is found in the complement graph. According to the method, the fault can be handled without traversing the whole network, fewer nodes and links are to be reconfigured in fault recovery, so that the calculation amount and the fault recovery time are reduced sharply.

Description

technical field [0001] The present invention relates to the technical field of optical communication, in particular to a method and device for processing an optical network fault. Background technique [0002] In the traditional distributed IP network, the control logic and data forwarding function are tightly coupled to the network equipment, and the equipment needs to implement the intelligence of the entire network under the control of thousands of distributed protocols, which will lead to an overly complex network control plane. Its scalability and flexibility are difficult to adapt to the rapid development of the network. SDN (Software Defined Networking, Software Defined Networking) is a new type of programmable network architecture that separates control functions from network devices, and moves them into logically centralized control software----controllers. Users can write software with The method flexibly defines the forwarding function of the network device. Thi...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the embodiments of the present invention is to provide a method and device for processing optical network faults, so as to solve the problem of traversing the entire optical network through the control platform when Floyd method and Dijsktra method handle faults such as link congestion or link disconnection in the optical network. , resulting in time-consuming and computationally intensive problems

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