Delay-guaranteed NFV cloud platform dynamic capacity expanding and shrinking method and system

Abstract

The invention discloses a delay-guaranteed NFV cloud platform dynamic capacity expanding and shrinking method and system. The method comprises the steps of collecting network configuration information, tenant configuration information and operation logs of an NFV cloud platform; according to the collected network configuration information of the NFV cloud platform, tenant configuration informationand an operation log, predicting a data packet average arrival rate of each tenant in a next time period by utilizing a logarithmic linear Poisson autoregression model to perform flow prediction, andanalyzing data packet average processing delay of each service chain by utilizing a classification Boxson queuing network model based on the data packet average arrival rate of each tenant in the next time period; according to the flow prediction result and the data packet average processing delay of each service chain, carrying out dynamic capacity expansion and shrinkage decision-making of theNFV cloud platform, the decision-making information comprising the deployment number and positions of various virtual network function instances and a flow forwarding rule; and translating the decision information into an instruction, and respectively sending the instruction to an SDN controller and a controller of the NFV cloud platform to execute capacity expansion and shrinkage operation.

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

Images