Then f with only two sub-flows is optimized again by using OLITS. We set the traffic splitting proportion of the first sub-flow filtered to increase from 0.05 to 0.95 by step of 0.05. Meanwhile, the second sub-flow is set to decrease from 0.95 to 0.05 by step of 0.05. The delay bounds of the two sub- flows are respectively calculated in case of different traffic splitting proportions with the contention flows in uniform splitting. The calculated result of traffic splitting proportion using OLITS is 0.500165, and the delay bound is 26.9485, as shown in Fig. 9.