Allied Telesis AT-S39 - Manual (Page 60)

Section II: Local and Telnet Management
60
Flow Control
Flow control applies only to ports operating in full-duplex mode.
The switch 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.
5 - Advertise 10FDX
6 - Advertise 10HDX
7 - Advertise 100FDX
8 - Advertise 100HDX
These selections are used for ports configured for Auto-
Negotiation. During Auto-Negotiation, a switch port determines
the appropriate speed and duplex mode by advertising its
capabilities to the end node connected to it.
By default, a switch port will advertise its full capabilities, which in
the case of a port on an AT-8024 or AT-8024GB switch are 10 or
100 Mbps speed and half- or full-duplex mode.
You can use these four selections to limit the capabilities a switch
port will advertise during Auto-Negotiation. For example, if you
set the selection 8 - Advertise 100HDX to No, the switch port will
not advertise that it is capable of 100 Mbps, half-duplex operation.
Note
In most network environments you should leave all Auto-
Negotiation advertisements activated, which is the default setting.
9 - MDI/MDIX Mode
Use this selection to set the wiring configuration of the port. If you
set this to Auto, which is the default setting, the port will configure
itself automatically according to the end node connected to it.
If desired, you can set the wiring configuration manually by
selecting either MDI or MDIX.
Note
The Auto setting is not available if you set a port’s speed and duplex
mode manually.