Software-defined networking virtual network embedding method

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

Active Publication Date: 2018-11-30
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 mini...

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  • Software-defined networking virtual network embedding 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-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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Application Information

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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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