Chapter 6 System
GS1500-24P User’s Guide
56
Speed/
Duplex
Select the speed and the duplex mode of the Ethernet connection on this
port. Choices are Auto, 10M/Half, 10M/Full, 100M/Half, 100M/Full
and 1000M/Full (Gigabit connections only).
Selecting Auto (auto-negotiation) allows one port to negotiate with a peer
port automatically to obtain the connection speed and duplex mode that
both ends support. When auto-negotiation is turned on, a port on the
Switch negotiates with the peer automatically to determine the connection
speed and duplex mode. If the peer port does not support auto-negotiation
or turns off this feature, the Switch determines the connection speed by
detecting the signal on the cable and using half duplex mode. When the
Switch’s auto-negotiation is turned off, a port uses the pre-configured
speed and duplex mode when making a connection, thus requiring you to
make sure that the settings of the peer port are the same in order to
connect.
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 Flow Control to enable it.
Apply Click Apply to save your changes to the Switch.
Port The Port column displays the port number.
State The State column indicates if the port is Enabled or Disabled.
Speed/Duplex
Config The Config column displays the port’s Speed/Duplex configuration.
Actual The Actual column displays the port’s current Speed/Duplex status.
Flow Control
Config The Config column displays if Flow Control has been configured to be
turned On or Off for the port.
Actual The Actual column displays the port’s current Flow Control status.
Table 9 System > Port Setting (continued)
LABEL DESCRIPTION
To Next Page
Loading...
