Int J Performability Eng ›› 2020, Vol. 16 ›› Issue (10): 1535-1547.

### A Node Evaluation Method based on Multiple Types of Node Status Characteristics in Virtual Network Function Placement

Ying Hu*

1. School of Computer and Communication Engineering, Zhengzhou University of Light Industry, Zhengzhou, 450000, China
• Submitted on  ;  Revised on  ; Accepted on
• Contact: * E-mail address: 3878105@qq.com
• About author:Ying Hu is a lecturer in the School of Computer and Communication Engineering at Zhengzhou University of Light Industry. Her research interests include network virtualization and network function virtualization.

Abstract: Network function virtualization can provide the required functionality at run-time on demand by its virtualization technologies. Network functions are implemented in software using shared hardware, such as X86-based servers, and service function chaining allows a flow forwarding along a chain of network functions. Such architecture can improve the network flexibility and reduce the energy consumption, which can be achieved without impacting the acceptance ratio of requests. However, reducing energy consumption means activating as few nodes as possible, which leads to the unbalanced load and the low acceptance ratio. Therefore, to achieve a trade-off between the energy consumption and acceptance ratio, in this paper, we propose a new scheme called the node evaluation method. It is based on multiple types of status characteristics, which can evaluate each candidate node for virtual network function placement with multiple types of node status characteristics as input. Finally, the simulations results demonstrate that the proposed method can obtain a better trade-off between energy and acceptance ratio than the existing approaches.