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6
CHAPTER 1 Intel Express 100BASE-TX Switching Hub
Using the Switch
The switch requires minimal user intervention. It automatically learns
the addresses of new stations as they appear, and will relearn
addresses dynamically if the network is reconfigured.
Each of the Fast Ethernet ports has six status LEDs. There is a
separate bank of four LEDs for the management status.
Port status LEDs
Port LEDs provide information about the port’s configuration and the
status of devices connected to the ports.
MDI
Xmt FC/FD Mgmt
Rcv Clsn Link
Port 3
Xmt Transmit. Lights when the switch is transmitting
packets on this port.
Rcv Receive. Lights when packets are received on this port,
even if they are not forwarded.
FC/FD Flow Control (default) or Full Duplex. Blinks on when
flow control is activated. If flow control is disabled, the
LED blinks on when a packet is lost. If full duplex is
enabled on the port, the LED is normally on
continuously, and blinks off when a packet is resent.
Flow control is not possible, nor needed, when full
duplex is enabled.
Clsn Collision. Lights whenever a collision occurs while the
port is transmitting. Collisions are normal in an Ethernet
environment. However, if the collision LED is on
continuously, you may have a problem with a device on
the segment.
NOTE
The default configuration of
all ports is half-duplex mode.
To change to full duplex, use
the Console Manager. See
page 19 for instructions.
Ports on the switch are wired
MDI for connection to MDI-X
ports using a straight-through
UTP cable. See page 9 for
more information.