| Accurate available bandwidth measurement is important for network protocols and distributed programs design, traffic optimization, capacity planning, and service verification. Research on measuring available bandwidth falls into two basic classes: the network traffic modeling algorithms and the self-induced algorithms. The self-induced algorithms are based on packet dispersion techniques. The currently available bandwidth measurement algorithms face the problems of distortion of measurement on multi-hop paths, system resource limitations, probe traffic intrusiveness and measurement accuracy. We have developed a new rate-based self-induced algorithm---PoissonProb. The intervals between probe packets of this algorithm are in Poisson distribution format and the algorithm infers the available bandwidth according to the average of probe packets rate. The algorithm has been implemented as the PoissonProb Available Bandwidth (PAB) measurement tool. The PAB tool can be operated in either sender-based or receiver-based mode. (Abstract shortened by UMI.)... |
