Spectral efficiency-priority anycast routing resource reconfiguration method based on elastic optical network

Abstract

The invention relates to a spectral efficiency-priority anycast routing resource reconfiguration method based on an elastic optical network. According to an anycast request, multiple blocking rate optimal optical paths for the anycast are calculated, a first-fit method is used for distributing optical path spectrum blocks, and the blocking rate optimal optical paths are ranked according to a spectral efficiency priority criterion; then, whether an optical path destination node with the highest blocking rate optimal frequency efficiency of the anycast is a non-renewable energy power supply data center is judged, if yes, the blocking rate optimal optical path is preserved for the anycast request, an energy consumption optimal optical path with the second highest spectral efficiency connected with a renewable energy power supply data center is calculated for the anycast request, and a last-fit spectrum distribution mode is used for distributing spectrum blocks, and if not, spectrum distribution conflict is judged to happen between the optical path and energy consumption optimal optical paths of other anycasts, the conflicted anycast energy consumption optimal optical path is reconfigured to the preserved blocking rate optmial optical path for transmission, and while the low blocking rate for the anycast service is ensured, the purpose of energy-saving anycast transmission can be achieved.

Description

technical field [0001] The invention belongs to the technical field of optical communication, and relates to a method for reconfiguring spectrum efficiency-first anycast routing resources based on an elastic optical network. Background technique [0002] Anycast service is a special network service defined by IPv6, which allows service applicants to access any data center server identified by sharing the same anycast address. With the development of the information and communication industry, especially various applications such as cloud computing, Internet of Things, big data and intelligent information, data center services have developed rapidly, and the proportion of anycast services in the network is increasing. The sharp increase of anycast services puts forward severe requirements on the network's bearer performance and bandwidth resources. For the defects of Dense Wavelength Division Multiplexing (DWDM) coarse-grained bandwidth allocation and fixed modulation format,...

AI Technical Summary

Problems solved by technology

Due to the mutual restriction of anycast blocking rate performance and energy consumption, only optimizing the network blocking rate cannot make business requests choose renewable energy-powered data centers as much as possible, and cannot reduce the non-renewable energy consumption of the network as much as possible; and Only reduce the non-renewable energy consumption of the network. When the path between the data center powered by renewable energy and the source node of the service request is too long, the establishment of anycast optical path needs to consume more transmission bandwidth resources, which will increase the blocking rate of the elastic optical network

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