ENSURING THE ENERGY EFFICIENCY OF SOFTWARE DEFINED NETWORKS (SDNS) WHEN IMPLEMENTING VARIOUS SECURITY SCHEMES

DOI: 10.31673/2786-8362.2024.028036

Abstract

Due
to the ease of modifying network operations and adapting various energy efficient mechanisms, SDN
provides a better solution not only for network security, but also for network ecology, which has become
important in network design and deployment for economic and environmental benefits. Security schemes
in place consume more power than without security schemes because security schemes consist of
computations and communications that consume more power in the network. Therefore, a comprehensive
study of both security and energy efficiency, as well as their compromise, is necessary. Data were collected
to evaluate and compare the performance of an SDN network and a traditional network, and to study the
trade-off between energy efficiency and security. Implementing some power-saving strategies in SDN can
reduce overall power consumption, resulting in lower costs. The openness, ease, and programmability of
SDN reduces the complexity of implementing energy efficiency approaches in both hardware and software.
It would be more efficient to apply energy saving schemes in each module for overall energy saving. This
requires knowing the power consumed in SDN by each module, such as chassis, routers, and nodes in the
network. In addition, SDN is considered a viable solution where minimal resources can be used to perform
a task without compromising overall network performance (e.g. security), thus reducing energy
consumption. The choice of different SDN parameters depends on the applications that SDN is intended to
support. For example, optimal SDN options may not be optimal SDN options for traditional data center
networks, and optimal SDN options for IoT may not be optimal SDN options for cyber-physical systems.
In this regard, it is necessary to always strive to achieve a compromise between safety and energy efficiency.

Keywords: Software-defined networks (SDNs), SDN controller, OpenFlow switch, energy efficiency

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