apparatus of analyzing performance of traffic in ATM switch and method thereof and ATM switching system employing the same

The performance of the ATM switch and the ATM switching system analyzer method and applying it are disclosed. And a performance analyzer of the ATM switch, the traffic detecting unit that is installed on the communications network detecting a traffic status information for constant bit rate connection type of the data and the data of a variable bit rate connection type to be input to the ATM switching unit to handle circuit-switched data, performance for calculating the processing power for the data in the constant bit rate connection type of the data with a variable bit rate connection type from the traffic status analysis, comprising a. With such a performance analyzer of the ATM switch and the ATM switching system and method applying this, through performance analysis and this, in the ATM switch can be used in the design of the ATM switch. That is, to predict whether the ATM, and can be appropriately selected in a switch having a capacity for the data processing capacity of the network, the established ATM network to accommodate the ABR and CBR connections in order to maintain a desired performance by some to be built have.