Software-defined networking virtual network embedding method

Abstract

The invention relates to a software-defined networking virtual network embedding method, belonging to the technical field of communication networks. The method comprises the following steps: S1, modeling for SDN underlying network characteristics; S2, modeling for underlying node and underlying link state identifiers; S3, modeling form virtual network request resource needs; S4, modeling for virtual network request node and link embedding identifiers; S5, modeling for a virtual network request joint overhead function; S6, modeling for virtual network request embedding power consumption; S8, modeling for virtual node embedding limit conditions; S9, modeling for virtual link embedding limit conditions; S10, determining a virtual network request embedding strategy based on minimization of thejoint overhead function. In the method provided by the invention, the SDN underlying network characteristics and the virtual network request resource needs are considered comprehensively, and the virtual network request optimization embedding can be realized based on 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...

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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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