Fast overflow probability estimation tool for MPLS networks

The constant growth of internet and the variety of services provided makes the estimation of QoS parameters a fundamental need for every Internet Service Provider. The present work introduces a software tool that calculates the overflow probability on the core links of a MPLS network. The calculation is based on the statistical properties of the arriving traffic and the routing on the network. The procedure uses the results of the large deviations theory and the work of Likhanov et al. [22] for small buffer. The results obtained show high degree of accuracy as well as very short processing times. This allows the user to determine the overflow status of the network without the need to use the traditional highly time consuming simulation techniques.