CENTRALIZED SUPERVISORY SYSTEM OF DATA COMMUNICATION NETWORK

摘要

PURPOSE:To supervise all traffic information independently of the task of each processor without cancelling the traffic information due to the condition of a centralized control device for a network by automatically reading out the contents of a local memory in each processor from the centralized control device. CONSTITUTION:The network centralized control device 10 is connected to a circuit internal bus transfer bus 20 through a circuit 30 and plural processors 100- 300 are connected to the transfer device 20 through an internal bus 50. When a command is applied from a terminal 12 to the device 10, a bus-passing transmision request signal 40 is transmitted to the processor 20 through the circuit 30, the transfer device 20 and the internal bus 50. Receiving the signal 40, the processor 200 reads out traffic information 41 accumulated and counted in a local memory 230 and transfers the information 41 to the device 10 through the bus. The average value of the information 41 is calculated by the device 10 on the basis of a period of the output of the request signal 40, and when the information 41 is continued, the sending period of the request signal 40 is changed to supervise the whole information 41 by the device 10.