Software Flow Control; Flow Control Configuration - Enterasys RoamAbout Installation And User Manual

Software Flow Control

Software flow control uses two special characters, called "Xon" and "Xoff", which are
embedded in the data to turn on or off the transmission of data from the source to receiver.
In the incoming direction, flow control prevents the Ethernet Adapter from sending data
when the computer is not ready to accept it. With incoming flow control on, the Ethernet
Adapter will interpret Xon/Xoff characters in the data stream entering the serial port of the
Ethernet Adapter as flow control signals. The Xon/Xoff characters are not considered data
and therefore are absorbed by the Ethernet Adapter.
The outgoing software flow control option specifies the generation of Xon/Xoff flow
control characters by the Ethernet Adapter. The control characters are sent out the serial
port of the Ethernet Adapter and instruct the computer to start or stop sending data. This
option is used to prevent the computer from sending data when the Ethernet Adapter is not
ready to accept it.
Software flow control can have both incoming and outgoing mechanisms running
simultaneously, individually, or not at all (as is the default).

Flow Control Configuration

To configure the Ethernet Adapter flow control, perform the following steps:
1) Click on the Flow Control tab.
2) Check the flow control settings of the device that you are connecting to the
with the default settings .
Ethernet Adapter. Change the Ethernet Adapter settings to match those of the
connected device by clicking on the corresponding buttons. The flow control
and the device settings must match. For example, if you are connecting to a
device that is using RTS/CTS hardware flow control, set the Ethernet Adapter
hardware flow control settings to RTS/CTS.
Figure 5-3 shows the Flow Control tab page
Flow Control
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