Capacity dimensioning based on traffic measurement in the Internet

Capacity dimensioning in the Internet is becoming more important to provide stable and predictable quality of service (QoS) to the customers. However, capacity dimensioning is not an easy task because the network state changes frequently. We first propose a method to identify the bottleneck for improving the performance of the end users. We then focus on the measurement method for utilization of the bottleneck link between end-to-end hosts. To measure the utilization of the bottleneck link accurately, we propose a new measurement method that can eliminate several kinds of measurement errors. We collected measurement results from the actual operating Internet, and provide evidence to support the appropriateness of our approach. We finally propose a design framework in order to determine the adequate link capacity for offering a desired QoS level to end users