Leetar: A new hierarchical-structural topology generator for the internet

An accurate model of network topology is the fundamental to design a new network protocol. Recent efforts have been made to produce many topologies for the Internet, but few can give attention the power-law distribution characteristic in each tier of the Internet. We propose Leetar, a new Internet topology generator, which can generate topologies that contains many tiers and each tier match the power-law distribution characteristic. By emulating Leetar in a simulator, it can successfully match the most characteristics of the Internet. Finally, we make comparisons between Leetar and other generators. The simulation results indicate that the topology generated by Leetar is more realistic than others.