A delay-guaranteed nfv cloud platform dynamic expansion and contraction method and system

Abstract

The invention discloses a delay-guaranteed NFV cloud platform dynamic expansion and contraction method and system, comprising: collecting network configuration information, tenant configuration information and operation logs of the NFV cloud platform; according to the collected network configuration information of the NFV cloud platform, tenant Configuration information and operation logs, using the logarithmic linear Poisson autoregressive model to predict the average arrival rate of data packets for each tenant in the next time period for traffic prediction, and based on the average arrival rate of data packets in the next time period for each tenant, Use the classified Jackson queuing network model to analyze the average packet processing delay of each service chain; based on the traffic prediction results and the average packet processing delay of each service chain, make dynamic expansion and contraction decisions for the NFV cloud platform. The decision information includes various The deployment quantity, location, and traffic forwarding rules of virtual network function instances; translate the decision-making information into instructions and send them to the SDN controller and controller of the NFV cloud platform to perform expansion and contraction operations.

Description

technical field [0001] The invention relates to a delay-guaranteed NFV cloud platform dynamic expansion and contraction method and system, belonging to the field of computer networks. Background technique [0002] Computer networks play an important role in human production and life, and are an important infrastructure supporting modern social and economic development and technological innovation. The development of emerging network technologies such as mobile Internet, cloud computing, and Internet of Things has put forward new requirements and challenges for the scalability, security, and availability of computer networks, and the research on future networks is imminent. [0003] Network Function Virtualization (NFV) technology is an important technology to realize network virtualization, and it is one of the mainstream research directions of future networks. The network function is a general term for middleboxes deployed in the network, such as firewalls (Firewall), intr...

AI Technical Summary

Problems solved by technology

[0013] However, the above-mentioned solutions only consider the capacity expansion of NFV service chains from the perspective of throughput, ignoring the research on packet processing delay, and only guaranteeing throughput cannot ensure high-quality service quality

Moreover, the above-mentioned solutions only consider the case of a single service chain, and there is a lack of research on multi-tenant statistical multiplexing service chain scenarios

For packet processing delay, NFV-RT uses the real-time scheduling mechanism provided by the host and virtual machine operating systems to provide a delay guarantee solution for the NFV service chain, but it assumes that the entire service chain is located on the same physical server. Not conducive to the implementation of dynamic expansion and contraction

NFVnice studies the performance bottlenecks that may exist on multiple intersecting NFV service chains and proposes a backpressure mechanism to ensure performance isolation. However, for high-load situations, only the upstream VNF instance packet loss strategy cannot guarantee service quality

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