Allied Telesis AT-S81 - Manual (Page 216)

Chapter 19: Port Configuration
216 Section II: Web Browser Interface
node is operating at a fixed duplex mode of full-duplex. To avoid
this problem when connecting an end node with a fixed duplex
mode of full-duplex to a switch port, disable Auto-Negotiation on
the port and set the port’s speed and duplex mode manually.
ˆ The only valid setting for an optional SFP port is Auto-Negotiation.
Flow Ctrl
The current flow control setting on the port. The switch uses a special
pause packet to notify the end node to stop transmitting for a specified
period of time. The possible values are:
Enabled - The port is allowed to use flow control. This is the default
setting for all ports on the switch.
Disabled - The port does not use flow control.
3. Click Apply to save the configuration.