A mapping method for virtual optical network based on SDN architecture

Abstract

A kind of mapping method based on SDN architecture facing virtual optical network, comprising step 1: determine virtual request and each network parameter and topology diagram of physical bottom layer, and create a topology auxiliary diagram with VON-FP value as link weight, determine Optimization goal; Step 2: Arrange the links on the topology auxiliary map in ascending order of VON-FP value, classify them according to the virtual request, and determine the mapping method according to the mapping rules; Step 3: Develop a population-based global search and individual-based The method frame of the local heuristic search, and use this search method to solve the mapping of the classified virtual optical network requests; Step 4: Repeat the iterative search mapping method to obtain the optimal mapping scheme when the fitness function is the smallest, and use the scheme Assigned to the SDN-based NOX architecture for specific data calculation and traffic forwarding operations. The method of the invention improves the efficiency of multi-domain virtual optical network mapping, and reduces the failure rate of the entire network after mapping.

Description

technical field [0001] The invention belongs to the field of network technology, and in particular relates to a virtual optical network-oriented mapping method based on an SDN architecture. Background technique [0002] With the explosive growth of big data services and cloud-based data applications, network virtualization is increasingly being used to solve network congestion that cannot be solved by traditional network architectures. Among all virtualized network issues, the most concerned one is virtual optical network embedding (VONE). The virtualization of optical network has the advantages of high speed, high bandwidth dynamics, super large capacity and abundant interfaces, while network mapping affects the working efficiency of the entire network. The key issues faced by virtual optical network mapping mainly include: the constraints of optical network transmission, the design and implementation of mapping methods, and the optimization of network mapping. [0003] N...

AI Technical Summary

Problems solved by technology

[0004] Since the upper-layer resources in a multi-domain network are allocated to different underlying networks, this will inevitably cause inter-domain opacity, and it is difficult for the controller to coordinate intra-domain and inter-domain transmission, and the existing mapping methods do not fully take into account optical Network constraints and survivability

For example, the consistency and continuity of frequency bands on optical network links must be observed during optical network transmission, and there is a certain failure rate when mapping links

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