Patent ID: 7593328
Filing Date: 2009-09-22
Classification: H04L

Abstract:
1. A flow control method comprising; detecting whether congestion occurs in a data transmission port of a transmission equipment at a receiving end and, if yes, a packet forwarding module feeding back an Ethernet flow control frame to the transmission equipment at a sending end, the transmission equipment at the sending end pausing sending data packets after receiving the Ethernet flow control frame; detecting whether congestion in the data transmission port is over and, if yes, the transmission equipment at the sending end continuing to transmit data packets, otherwise the packet forwarding module at the receiving end continuing to feed back the Ethernet flow control frame to the transmission equipment at the sending end, thereby establishing flow control of the data transmission port; detecting whether congestion occurs on one board connecting with the data transmission port and, if yes, a board mapping module feeding back a board-level flow control frame to the packet forwarding module, the packet forwarding module pausing sending data packets to the board connecting with the data transmission port after receiving the board-level flow control frame; and detecting whether congestion in the board connecting with the data transmission port is over and, if yes, the packet forwarding module continuing to send the data packets to the board connecting the data transmission port, otherwise the board mapping module continuing to feed back the board-level flow control frame to the packet forwarding module thereby establishing flow control of the board connecting with the data transmission port of the transmission equipment.