ATM switch and error processing method employed therein

摘要

An ATM switch and an error processing method in the ATM switch are configured to reliably store and investigate contents of error information of cells without increasing the expense for installment. By making a queue to which cells classified by a cell processor are sequentially connected until the cell are output from a circuit associate portion in response to an instruction from a queue controller of the circuit associate portion, an error queue for cumulatively storing error cells is formed in a cell buffer for temporary storage of cells in addition to a normal queue for cumulatively storing normal cells, so as to cumulatively store normal cells and error cells.