This paper proposes a new active queue management algorithm named REDu that excavates in depth the essential differences between non-adaptive and adaptive flows. Taking use of information like CHOKe Hit and RED Drop

this algorithm preselects non-adaptive flows and utilizes a heat increasing and decreasing mechanism to compute "heat"

a new kind of partial flow state

achieving the detection and punishment of non-adaptive flows. Simulation results based on ns-2 show that

compared with several other active queue management algorithms

REDu can detect and punish non-adaptive flows more precisely

bring more adequate protection to adaptive flows and improve network robustness significantly.