Operation Manual

VigorSwitch P1100 User’s Guide
42
Duplex
Port duplex capabilities:
 Auto: Auto duplex with all capabilities.
 Half: Auto speed with 10/100M ability only.
 Full: Auto speed with 10/100/1000M ability only.
Flow Control
A concentration of traffic on a port decreases port
bandwidth and overflows buffer memory causing packet
discards and frame losses. Flow Control is used to
regulate transmission of signals to match the bandwidth
of the receiving port. The switch uses IEEE802.3x flow
control in full duplex mode and backpressure flow
control in half duplex mode. IEEE802.3x flow control is
used in full duplex mode to send a pause signal to the
sending port, causing it to temporarily stop sending
signals when the receiving port memory buffers fill. Back
Pressure flow control is typically used in half duplex
mode to send a "collision" signal to the sending port
(mimicking a state of packet collision) causing the
sending port to temporarily stop sending signals and
resend later.
Select “Auto”/ “Enable” to enable it. Or select
“Disable” to disable it.