| 摘要 |
<p>PURPOSE:To attain sure control between packet exchanges by providing a control means for controlling a threshold level generating means to make a threshold level different from other cases when an input-side FIFO memory stores a packet from a specific input terminal. CONSTITUTION:The 1st transfer circuit (incoming transfer circuit) and the 2nd transfer circuit (outgoing transfer circuit) are provided with the following means; that is, a threshold level generating means 101 selects any of plural threshold levels and outputs the result. Further, a control means 104 allows a packet transfer means 103 to transfer a packet when the storage capacity in an output-side FIFO memory does not exceed the output threshold level as the result of comparison of a comparison means 102, and controls the threshold level generating means 101 to make the threshold level different from other cases when the input-side FIFO memory stores a packet from a specific input terminal. Thus, the control between packet exchanges is ensured more.</p> |
