| 摘要 |
PROBLEM TO BE SOLVED: To obtain the maximum balance between hardware and software so that cost, necessary space and design complication can be minimized, and frame tracking resolution can be maximized. SOLUTION: This system is constituted so that when the reception of an incoming frame is communicated by a source port, a timer 164 can be realized related with a frame. Also, this system includes a processor 100a constituted so that a successive timer state 144 can be outputted, and a deleting means connected with the processor for receiving the timer state which judges the lapse of a prescribed deleting period based on the timer state. This system includes a logical network 100b for allowing the deleting means to generate a deletion signal 147 after the lapse of the prescribed deleting period, and the processor is used as a timing incrementer, and logical judgment is assigned to the high speed logical network by the processor. |
