Abstract: An objective of the present invention is to provide a three-dimensional backplane to solve the problem that the number of layers of a printed circuit board for producing a backplane increases linearly along with the number of connectors. The three-dimensional backplane includes: a first group of connectors, a second group of connectors, a first group of printed circuit boards, and a second group of printed circuit boards. Any printed circuit board in the first group of printed circuit boards is connected to any printed circuit board in the second group of printed circuit boards. Any connector in the second group of connectors is connected to any connector in the first group of connectors. With the foregoing solution, the number of wires on each printed circuit board is reduced, so that the number of layers of a printed circuit board for producing a backplane is reduced.

Abstract: An objective of the present invention is to provide a three-dimensional backplane to solve the problem that the number of layers of a printed circuit board for producing a backplane increases linearly along with the number of connectors. The three-dimensional backplane includes: a first group of connectors, a second group of connectors, a first group of printed circuit boards, and a second group of printed circuit boards. Any printed circuit board in the first group of printed circuit boards is connected to any printed circuit board in the second group of printed circuit boards. Any connector in the second group of connectors is connected to any connector in the first group of connectors. With the foregoing solution, the number of wires on each printed circuit board is reduced, so that the number of layers of a printed circuit board for producing a backplane is reduced.

Abstract: A method for realizing backpressure of masses of ports and a device realizing the method are disclosed. The method for realizing backpressure of masses of ports includes: detecting whether user data transmitted to a channelized physical port reaches a backpressure threshold, generating an idle frame or a series of idle frames when the backpressure threshold is reached; combining the idle frame with the user data which needs to be transmitted to the channelized physical port reaching the backpressure threshold, and transmitting the combined data; discarding the idle frame before the combined data enters the channelized physical port. The idle frame is employed in the present invention to realize the backpressure. The idle frame occupies some of the transmission bandwidth and reduces the bandwidth of user data, while the idle frame does not enter the physical port. Therefore, the aim of backpressure is achieved. The bandwidth of idle frame can be pre-configured according to the requirements.

Abstract: A method for realizing backpressure of masses of ports and a device realizing the method are disclosed. The method for realizing backpressure of masses of ports includes: detecting whether user data transmitted to a channelized physical port reaches a backpressure threshold, generating an idle frame or a series of idle frames when the backpressure threshold is reached; combining the idle frame with the user data which needs to be transmitted to the channelized physical port reaching the backpressure threshold, and transmitting the combined data; discarding the idle frame before the combined data enters the channelized physical port. The idle frame is employed in the present invention to realize the backpressure. The idle frame occupies some of the transmission bandwidth and reduces the bandwidth of user data, while the idle frame does not enter the physical port. Therefore, the aim of backpressure is achieved. The bandwidth of idle frame can be pre-configured according to the requirements.