Data center-oriented service function chain optimization arrangement method and system

Abstract

The invention discloses a data center-oriented service function chain optimization arrangement method, which is characterized in that resources required by virtual network functions are regarded as variable parameters, the relationship among a request arrival rate, computing resources and processing delay is analyzed based on a queuing theory and elastic resource allocation, and a two-stage heuristic arrangement strategy is provided by taking energy consumption and network delay as optimization indexes. In the first stage, a greedy deployment strategy is utilized to obtain a series of mapping relationships between VNFs and servers; in the second stage, on the basis of the solution set in the previous stage, the nonlinear constraint optimization problem is further solved, and the optimal configuration of the computing resources is obtained. The invention also discloses a system for implementing the data center-oriented service function chain optimization arrangement method. According to the method, the server energy consumption, the link bandwidth occupancy rate and the service delay are effectively reduced, and the deployment success rate is improved. According to the method, the resource optimization arrangement of the SFC is completed under the condition that the network topology and the SFC data are given, and the arrangement result can be obtained within the controllable operation time.

Description

Technical field [0001] The present invention relates to the field of network service function deployment in network communication, in particular to a service function chain optimization process for a data center. [0002] technical background [0003] With the rapid emergence of new Internet services, traditional network architectures are difficult to support new generation networks continue to improve performance requirements. NetworkFunction Virtualization, NFV is one of the key technologies that implement the 5G service schema. NFV will develop all kinds of network metals in the current network to virtual network function (VNF), in a VNF-based network environment, business function is mainly carried by service function chain, SFC), service function chain It refers to the ordered VNF sequence through which traffic passes. Service function chain orchestration refers to a given SFC collection that takes reasonable way to deploy VNF in a premise that meets certain constraints to ac...

AI Technical Summary

Problems solved by technology

However, in actual application scenarios, the processing rate of VNF will be affected by various factors such as resource allocation and request arrival rate, which in turn will affect the service performance of SFC

At present, the existing methods have added dynamic thinking, respectively established a queuing theory model and an elastic resource allocation model, but did not link the two

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