H - Electricity – 04 – L
Patent
H - Electricity
04
L
H04L 12/56 (2006.01) H04L 12/24 (2006.01)
Patent
CA 2285167
A flow control method in an Ethernet switch being a downstream device using a full duplex mode in a packet switched network. The Ethernet switch has a plurality of input ports connected to a plurality of Ethernet switches being upstream devices and a common memory for storing packet data received from each input port, for transmitting packet data read from the common memory to a destination upstream device. In the flow control method, the buffer state of the common memory is first determined. If the buffer state is buffer-full, a pause frame including a predetermined pause time is transmitted to the plurality of Ethernet switches being upstream devices and an expected pause time of the upstream devices is counted. The buffer state of the common memory is determined again if the expected pause time is out. If the buffer state is buffer-full, the pause frame including the predetermined pause time is re-transmitted to the plurality of Ethernet switches being upstream devices and the expected pause time of the upstream devices is counted.
Joung Jinoo
Kim Young-Il
Samsung Electronics Co. Ltd.
Smart & Biggar
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