Abstract:

Real network traffic has a different impact over network nodes if compared to constant traffic generated by tools like Iperf, even when they have the same average throughput. Busty traffic may cause buffers overflows while constant traffic does not, and can decrease the measurement accuracy. The number of flows may have an impact on flow-oriented nodes, such as SDN switches and controllers. In a scenario where software-defined networks will play an essential role in the future internet, a more in-depth validation of new technologies considering these aspects is crucial. Also, most of the open-source realistic traffic generator tools have the... read more

Abstract: A well-known problem of network traffic representation over time is that there is no “one-fits-all” model. The selection of the “best” model is traditionally made in a time-consuming and ad-hoc manner by human experts. In this letter, we evaluate the feasibility of using Bayesian information criterion (BIC) and Akaike information criterion (AIC) as tools for automated selection of the best-fit stochastic process for inter-packet times. We propose and validate a methodology based on information criteria, resulting in an automated and accurate approach for such traffic modelling tasks.

Published in: IEEE Networking Letters ( Volume: 1, Issue: 2, June 2019)

Page(s): 56... read more

Abstract: In this work, we aim to evaluate how good are the information criteria AIC and BIC inferring whichis the best stochastic process to describe Ethernet inter-packet times. Also, we check if there is a practical differencebetween using AIC or BIC. We use a set of stochastic distributions to represent inter-packet of a traffic trace and calculate AIC and BIC. To test the quality of BIC and AIC guesses, we define a cost function based on the comparisonof significant stochastic properties for internet traffic modeling, such as correlation, fractal-level and mean. Then,we compare both results. In this short paper, we... read more

Abstract: New emerging technologies have a larger unpredictability, compared to legacy equipment. Theyrequire a larger set of meaningful tests on many different scenarios. But, in the open source world is hard to finda single tool able to provide realism, speed, easy usage and flexibility at the same time. Most of the tools aremonolithic and devoted to specific purposes. This work presents a flexible and extensible framework which aimsto decouple synthetic traffic modelling from its traffic generator engine. Through a new abstraction layer, it wouldbecome possible to use modern and throughput optimized tools to create realistic traffic, in an automated way.... read more

This is the register of computer program provided by INPI (Instituto Nacional da Propriedade Industrial – National Institute of Industrial Property) Ethermonitor, wich I developed at CPQD when I was an intern.