Using The Leds For Fault Diagnosis - 3Com LinkBuilder MSH User Manual

Using The LEDs For Fault Diagnosis

The LEDs on the front of the module indicate bridge activity and
faults:
PWR (Power)
Green on - Normal: power present, self-test completed
successfully and bridge operating normally.
Green flashing - Self-test is in progress (this lasts about one
second).
Red on - Fault: a fault has occurred during power-up self-test or in
operation. You should contact your supplier immediately for
advice.
TXn or TX (Transmit)
Yellow flashing - Flashes every time a frame is transmitted from
port n or external port.
RXn or RX (Receive)
Yellow flashing - Flashes every time a frame is received by port n
or external port.
ENn or EN (Enabled)
Yellow on - Port n or external port is enabled, listening or
learning.
Yellow flashing - Port n or external port is enabled and blocking.
Off - Port n or external port is disabled.
DUA1860-0AAA01
Using The LEDs For Fault Diagnosis 6-3