SFC mapping method based on VNF resource change matrix

Abstract

The invention discloses an SFC mapping method based on a VNF resource change matrix. The method comprises the following steps: acquiring physical network information and multiple pieces of user service request information; performing first preprocessing on the physical network information to obtain a shortest path; performing second preprocessing on all the user service request information so as to sort all the user service request information; determining a service deployment path corresponding to the to-be-processed service; according to the service deployment path, performing first mapping on a dependency VNF pair corresponding to the service deployment path to obtain a first mapping policy set; according to the service deployment path, performing second mapping on a dependency-free VNF corresponding to the service deployment path to obtain a second mapping policy set; and determining each virtual link corresponding to each piece of user service request information according to the first mapping policy set and the second mapping policy set so as to realize SFC mapping. According to the invention, the network resource usage amount can be reflected more accurately.

Description

technical field [0001] The invention belongs to the technical field of communication, and in particular relates to an SFC mapping method based on a VNF resource change matrix. Background technique [0002] When data packets are transmitted in the network, they often need to pass through various service nodes to ensure that the network can provide users with safe, fast and stable network services according to the design requirements. Usually, network traffic needs to pass through these service points according to the predetermined sequence required by the business logic, so as to realize the required business. [0003] With the development of network function virtualization (Network Function Virtualization, NFV) and network virtualization, network services can be separated from specific hardware, so that network services can be delivered in the form of software and deployed on general hardware platforms; software A defined network (Software Define Networking, SDN) can be cen...

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Problems solved by technology

[0004] However, the SFC mapping method in the prior art can only averagely allocate server resources, and cannot perform targeted operations on customer needs, resulting in low service efficiency and high cost. In addition, only virtual networks are considered in the prior art Function (Virtual Network Function, VNF) bandwidth change factor, and the resource usage of the VNF in actual applications may have an impact on the resources and virtual link bandwidth requirements of the subsequent VNF ​​of the VNF in the same SFC, the existing technology and the actual situation far apart

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