In this paper, D-CAPC (dynamic-congestion avoidance using proportional control) scheme is proposed as an extension of the standardized CAPC. In the proposed mechanism, some parameters, which are fixed in CAPC, are tuned dynamically according to the switch load. This task is filled by intelligent agents which are embedded in the switching nodes. Simulation results show that D-CAPC exhibits better performance than the standardized CAPC and encourage the trend towards a dynamic approach for network traffic control.