Bandwidth Allocation Mechanism of ForCES Transport Mapping Layer Based on TCP/IP

In order to avoid the DoS attack for the ForCES router from redirect messages, the paper proposes a bandwidth allocation mechanism called Rate and Queue controlled Dynamic Probabilistic Priority (RQ- DPP) based on ForCES Transport Mapping Layer (ForCES TML). The algorithm tries to calculate refusing probability of an incoming packet by per-flow estimated arrival rate and buffer occupancy. According to message ´s kind and refusing probability, the algorithm dynamically adjusts probability parameter which is used for scheduler to allocate and transmit different messages. Simulation results show the effectiveness of the new bandwidth allocation mechanism.