Following the static path, IM1 is able to send two cells,
one toOM1 and the other toOM3 through the paths labeled as
1 and 2 in Fig. 9, respectively. Similarly, IM2 also sends two
cells to OM1 and OM3 through the paths labeled as 3 and 4,
respectively. The cells are directly forwarded to the OMs
without being stored in the CMs, because the corresponding
CQs must be empty. Simulation results in Section 7 show that
SCF can reduce the latency under lowloads.