An anchor point-based virtual network damagement-resistant mapping method in an elastic optical network

Abstract

The invention requests to protect a virtual network destroy-resistant mapping method based on anchor points in an elastic optical network, and belongs to the technical field of cloud computing and communication networks. The invention provides an anchor point-based selection and mapping method for target physical nodes in a limited area according to the demand of virtual node resources and the distribution condition of physical network node resources. A selection and mapping method is proposed based on multiple channels and a minimum cost frequency slot window according to the bandwidth requirement of the virtual link and the distribution condition of frequency slot resources on a corresponding physical channel; according to the bandwidth distribution condition in multiple channels, a maximum bandwidth protection channel configuration method is adopted, and the destruction-resistant protection problem of the virtual link is solved. The mapping of the virtual network is realized by comprehensively utilizing the proposed node mapping, link mapping and protection path configuration methods, and the success rate of destroy-resistant mapping of the virtual network in the elastic opticalnetwork is effectively improved on the basis of improving the utilization rate of physical network node resources and spectrum resources.

Description

technical field [0001] The invention belongs to the technical field of cloud computing and communication network, and in particular relates to an anchor point-based virtual network invulnerability mapping method in an elastic optical network. Background technique [0002] With the rapid development of cloud computing, the research of network virtualization technology has been widely concerned by industry and academia. In a network virtualization environment, multiple virtual networks can be mapped to the same physical network, and each virtual network is independent from each other and shares the underlying physical network resources. The failure of physical links may lead to the interruption and loss of a large number of virtual network services, which will cause incalculable losses to users and service providers. Therefore, the invulnerable mapping of virtual networks is an important research in the field of cloud computing and communication networks. topic. [0003] At ...

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Problems solved by technology

[0005] Although the elastic optical network can make the allocation and use of bandwidth resources more flexible and convenient, the fragmentation of the spectrum can easily lead to a decrease in resource utilization, which increases the blocking rate of virtual network mapping.

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