A New Token Allocation Algorithm for TCP Traffic in Diffserv Network

A new algorithm has been designed for providing optimal allocation of tokens for TCP traffic in DiffServ networks, which is aimed at minimizing the packet losses of the individual flows. The optimality in token allocation is achieved using optimization technique employing Genetic Algorithm (GA). The transient performance of the proposed algorithm has been evaluated through Matlab simulation. It has been observed from the simulation studies that the token allocations vary with respect to the incoming rate of the flows. A TCP friendly three color marker has also been proposed to minimize the spacing between the subsequent "IN" and "OUT" packets. The formulation of the objective function and the application of GA for the optimization process have been explained. The simulation results pertaining to the token allocation for two different cases are furnished.