| 摘要 |
PURPOSE: A control device of a redundant packet switch system is provided to be implemented by using a simple sequence logic combination function, and to carry out a redundant switching process in hardware method, thereby enabling a high-speed redundant switching function without packet loss. CONSTITUTION: Each of packet switch boards comprises as follows. Switching portions(310-1,310-2) receive packet data transmitted from line cards through redundant packet data paths, and transmit the packet data to destination line cards by switching the packet data. Processor portions(320-1,320-2) activate plural switch ports of the switching portions(310-1,310-2), have system buses corresponding to the redundant packet data paths, and control redundancy of the first and second packet switch boards. State controllers(330-1,330-2) monitor states of each packet switch board by the two packet switch boards, input control signals from the processor portions(320-1,320-2) to generate activate/inactivate signals, and perform operational switching processes. Clock controllers(340-1,340-2) carry out clock synchronization processes with the packet switch boards. |
