Allied Telesis WebSmart AT-FS750/48, Installation Manual, Page: 29 / 62

AT-FS750/48 Fast Ethernet WebSmart Switch Installation Guide
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data link, which stops the end node. When the switch is ready to receive
data again, the switch stops forcing collisions. This is referred to as back
pressure.
A port operating at 100 Mbps and full-duplex mode uses PAUSE frames,
as specified in the IEEE 802.3x standard, to stop the transmission of data
from an end node. Whenever the switch wants an end node to stop
transmitting data, it issues this frame. The frame instructs the end node to
cease transmission. The switch continues to issue PAUSE frames until it is
ready again to receive data from the end node. This is referred to as flow
control.
The AT-FS750/48 Fast Ethernet WebSmart switch supports both transmit
(TX) and receive (RX) flow control.