Towards an efficient full IP networks

The main challenge in the engineering of IP networks is the integration and support of a wide variety of applications and services combining voice, data, streaming, and VoD that have different traffic characteristics and require different levels of quality of service (QoS). The most important measures of QoS are the end-to-end delay, packet loss rate and delay variation or jitter. Any network design procedure must take them into account to insure that the real-time QoS requirements of real-time and interactive services can be met. However, the jitter has been extensively studied in relation to various scheduling and routing algorithms, but it has been rarely studied in the context of relationships between others parameters of quality of service. In this paper, we present a study under several scenarios in order to explore the behavior of jitter and delay and their impact on the network performance. We confirm that these two parameters behave differently in function of traffic load for Poisson and heavy-tailed traffic.