Software-Defined Networking Virtual Network Mapping Method

A software-defined network and virtual network mapping technology, which is applied in the field of communication networks, can solve the problem of not fully considering the cost of virtual network mapping

Active Publication Date: 2021-04-23
CHONGQING UNIV OF POSTS & TELECOMM
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Problems solved by technology

Literature [Zong Y, Ou Y, Hammad A, et al.Location-Aware Energy Efficient Virtual Network Embedding in Software-Defined Optical Data Center Networks[J].Journal of Optical Communications and Networking,2018,10(7):B58-B70 .] A mixed integer linear programming model based on the minimization of total power consumption is proposed, and a location-aware energy-saving VNE algorithm is designed to reduce the power consumption of activated data centers and network components, but the proposed algorithm does not fully consider virtual network requests The mapping cost of

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  • Software-Defined Networking Virtual Network Mapping Method

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Embodiment Construction

[0035] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0036] figure 1 It is a schematic diagram of SDN virtual network request mapping. As shown in the figure, consider an SDN underlying physical network composed of a controller and multiple physical switches, where the underlying nodes and underlying links in the underlying physical network model can be active or dormant. In this state, for multiple virtual network requests, under the constraints of satisfying the virtual network request requirements and the performance of the underlying physical network equipment, the optimization goal is to minimize the joint overhead function of virtual network requests, and optimize and determine the virtual network request mapping strategy.

[0037] figure 2 It is a schematic flow chart of the method of the present invention, as shown in the figure, the method of the present invention specifically incl...

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Abstract

The invention relates to a software definition network virtual network mapping method, which belongs to the technical field of communication networks. The method includes the following steps: S1: modeling the characteristics of the SDN underlying network; S2: modeling the underlying node and the underlying link status identifier; S3: modeling the virtual network request resource requirements; S4: modeling the virtual network request node and link mapping Identification; S5: Modeling virtual network request joint overhead function; S6: Modeling virtual network request mapping cost; S7: Modeling virtual network request mapping power consumption; S8: Modeling virtual node mapping constraints; S9: Modeling virtual chain road mapping constraints; S10: Determine the virtual network request mapping strategy based on the minimization of the joint cost function. The present invention comprehensively considers the characteristics of the underlying network of the SDN and the resource requirements of the virtual network request, and can realize the optimal mapping of the virtual network request based on the minimization of the joint overhead function.

Description

technical field [0001] The invention belongs to the technical field of communication networks, and relates to a software-defined network virtual network mapping method. Background technique [0002] Network virtualization (network virtualization, NV) is an important technology for the future Internet and cloud computing. It allows multiple heterogeneous virtual networks to share underlying network resources through mechanisms such as abstraction, aggregation, and isolation of underlying network resources, which can effectively improve resource utilization, provide users with flexible and diverse services, and enhance network controllability . Software defined network (software defined network, SDN) has the characteristics of decoupling control plane and data plane, centralized control logic and network programmability, which have typical advantages for realizing network virtualization. [0003] SDN virtualization technology combines the advantages of SDN and NV technologie...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/24
CPCH04L41/145
Inventor 柴蓉谢德胜杜春玲陈前斌
Owner CHONGQING UNIV OF POSTS & TELECOMM
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