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 | ||
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OnLine |
| Port is | No cable connected | ||
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| Cable connected, but no device or host connected to cable |
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| Cable connected between hub and connected device or |
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| host, but the device is powered off |
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Fault |
| See information below | ATTO FibreCenter port is operating properly | ||
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Power A |
| ATTO FibreCenter is receiving power | Power supply A is not installed or turned on | ||
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| through power supply A | A power supply is active, but the FibreCenter is not receiving | ||
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| power through power supply A |
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Power B |
| ATTO FibreCenter is receiving power | Power supply B is not installed or turned on | ||
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| through power supply B | A power supply is active, but the FibreCenter is not receiving | ||
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| power through power supply B |
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Fault LED |
| Condition |
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ON |
| Port has been taken | |||
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| ➔ | Port is receiving bad / discontinuous signals | |
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| ➔ | Bad cables |
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| ➔ | Device connected to the port is powered on, but failed | |
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| ➔ | Cable may be too long / signal has deteriorated | |
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| ➔ | SFP fault – an internal fault within the SFP connected to the port requires replacement. | |
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