ATTO Technology 3400 Manuel D’Utilisation

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 Secure Data Path Applicationv  20
9 Troubleshooting
The fault LED indicates that a signal is being received, but the signal contains enough faults to make 
the port fail and go into bypass mode. 
Port LEDs on the ATTO FibreCenter are 
generally lighted if the port is enabled through the 
Setup CLI command and an active device is 
connected to the port. However, if you want to test 
your configurations without having active devices 
attached to the ports, enter the command Switch-
Forcemode while in the command line interface. 
If the FibreCenter is not in force mode, however, 
the port LEDs will behave as illustrated in the 
table below.
LED
If LED is illuminated
If LED is not illuminated
OnLine
Port is on-line and functioning properly
No cable connected
Cable connected, but no device or host connected to cable
Cable connected between hub and connected device or 
host, but the device is powered off
Fault
See information below
ATTO FibreCenter port is operating properly
Power A
ATTO FibreCenter is receiving power 
through power supply A
Power supply A is not installed or turned on
A power supply is active, but the FibreCenter is not receiving 
power through power supply A
Power B
ATTO FibreCenter is receiving power 
through power supply B
Power supply B is not installed or turned on
A power supply is active, but the FibreCenter is not receiving 
power through power supply B
Fault LED 
Condition
ON
Port has been taken off-line, because it is not receiving proper signals due to the following:
Port is receiving bad / discontinuous signals
Bad cables
Device connected to the port is powered on, but failed
Cable may be too long / signal has deteriorated 
SFP fault – an internal fault within the SFP connected to the port requires replacement.