An Anchor-Based Virtual Network Invulnerability Mapping Method in Elastic Optical Networks

Abstract

The invention claims to protect an anchor point-based virtual network invulnerability mapping method in an elastic optical network, which belongs to the technical field of cloud computing and communication network. According to the requirements of virtual node resources and the distribution of physical network node resources, the present invention proposes a method for selecting and mapping target physical nodes in a limited area based on anchor points; according to the requirements of virtual link bandwidth and the distribution of frequency slot resources on corresponding physical paths In this case, a selection and mapping method based on multi-path and minimum cost frequency slot window is proposed; according to the bandwidth allocation in multi-path, a maximum bandwidth protection path configuration method is adopted to solve the problem of survivability protection of virtual links. By comprehensively using the proposed node mapping, link mapping and protection path configuration methods to realize virtual network mapping, on the basis of improving the utilization of physical network node resources and spectrum resources, the virtual network invulnerability mapping in elastic optical networks is effectively improved success rate.

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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