Allied Telesis AT-S39 - Manual (Page 71)

AT-S39 User’s Guide
71
To avoid this problem, when connecting an end node with a fixed
duplex mode of full-duplex to a switch port, you should disable
Auto-Negotiation on the port and set the port’s speed and duplex
mode manually.
❑ The auto-MDI/MDI-X setting is available only when a port’s speed
and duplex mode are set by Auto-Negotiation. If a port’s speed or
duplex mode is set manually, the port’s wiring configuration
defaults to MDI-X. Disabling Auto-Negotiation and setting a port’s
speed and duplex mode manually might require setting the port’s
MDI/MDI-X setting as well.
If you select Manual, two additional selections are displayed in the
menu:
Figure 15 Manual Speed and Duplex Mode Settings
You use these two selections to set the port’s speed and duplex
mode. The possible settings for the 2 - Speed selection are:
0010 - 10 Mbps
0100 - 100 Mbps
1000 - 1000 Mbps (optional Gigabit Ethernet ports only)
The possible settings for 3 - Duplex are Full-duplex and Half-
duplex.
5 - Flow Control
Flow control applies only to ports operating in full-duplex mode.
A port uses a special pause packet to stop the end node from
sending frames. The pause packet notifies the end node to stop
transmitting for a specified period of time.
Possible settings are:
None - No flow control on the port.
Transmit - Flow control only as packets are being transmitted out
the port.
Receive - Flow control only on as packets are being received on
the port.
Both - Flow control for both packets entering and leaving the port.
3 - Speed .............. 0100
4 - Duplex ............. Full-Duplex