In the recent years, latency is continuously assuming more and more relevance due to the demanding applications being developed. In fact, with the evolution of Industry 4.0, the arrival of autonomous driving, the increase in the videoconferencing and the growth of cloud gaming platforms, the end-to-end delay is becoming every day more a strict constraint than a marginal aspect. While it is crucial that each application provides a high-level user experience, safety-critical environments are even more demanding, as missing the requirements can have catastrophic effects. Nevertheless, besides propagation delays strictly depending on the physical distance between the two endpoints, it is necessary to consider that the underlying infrastructure, as well as higher level communication protocols, are also factors influencing network performance.