Abstract
Green computing is a central theme in many computer science areas, including computer networks. Dynamic solutions that can properly adjust network resources can prevent infrastructure over-provision and mitigate power consumption during low-demand periods. In this work, we propose DTM (Dynamic mechanism for Traffic Management), an energy-aware dynamic mechanism for traffic management, built upon the SDN paradigm. DTM continuously monitors the use of network links to concentrate traffic and disconnect idle equipment without degrading the offered quality of service. Our simulations show that the mechanism can save up to 46% of energy, on average, in the links’ capacities of homogeneous and heterogeneous scenarios. In scenarios with average to high traffic demands, the mean energy savings are 36.72% and 17.86%, respectively. Compared to a well-known existing mechanism, our approach is up to 7% better for medium-demand scenarios, and approximately 4% better for high-demand scenarios.
Highlights
Energy-aware computing is a central theme of research today, especially in computer networks
This Dynamic Traffic Management engine (DTM) presents three main components: (i) active network monitoring, which maintains an up-todate network resource usage model; (ii) the new flows installation algorithm, which reactively identifies new traffic and allocates appropriate routes; and (iii) the active stream redirection algorithm, which aggregates flows in the least amount of links to shut down idle resources, avoiding to overload the remaining links
The mechanism has been evaluated through the emulation of networks using Mininet, considering a realistic topology
Summary
Energy-aware computing is a central theme of research today, especially in computer networks. Resources are often overprovisioned to cope with demands and spike in network traffic, resulting in wasted resources and high power consumption. Part of this problem occurs due to the existing infrastructure of legacy networks, where stability is crucial to business success. Due to the implementation challenges, the functionality for configuring Ethernet network elements in different data rates has been excluded from this standard final specification [2] In this sense, most of the existing solutions to save power on networks rely on the optimizing of data routing.
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