3Com 2226 PLUS - Manual (Page 53)

Configuring Port Settings 53
Setup
Use the Setup tab to configure the port settings. The
following options are available:
■ Port State – Enables and disables the port.
■ Flow Control – Enables and disables flow control on
the port. When flow control is enabled for the port,
the Switch regulates the packet flow so that a
sending device does not transmit more packets than
a receiving device can process. If flow control is
disabled, packets may be dropped under certain
periods of high traffic.
Flow control is disabled by default.
■ Speed – Sets the speed mode of the port. Available
options include auto, 10, 100, and 1000. For 1000
Mbps connections, see “Speed/Duplex for 1000
Mbps Connections” below.
Auto (or autonegotiation) sets the optimum combi-
nation of speed and duplex that can be supported
by both ends of the link.
■ Duplex – Sets the duplex mode of the port. Available
options include auto, half, and full.
CAUTION: It is advised not to enable Flow Control on
ports that will be connected to telephony and other
time sensitive traffic as it may hamper the QoS
performance.
If you modify any of these settings, click Apply to save
your changes.
Figure 38 Port Administration Setup Screen
Speed/Duplex for 1000 Mbps Connections
You cannot preset the speed to 1000 Mbps. To run a
port at 1000 Mbps, you must enable autonegotiation
for the port. When autonegotiation is enabled, the
Switch will automatically connect at 1000 Mbps,
providing the connected device also supports this speed.
1000 Mbps connections are always full-duplex.
Half-duplex connections are only available for 10 Mbps
and 100 Mbps settings.