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Communications fail.
Are the equipment linked up?
When the power saving mode or EEE (IEEE802.3az,
Energy Efficient Ethernet
function
) is enabled, it may not link, depending on the connected devices.
Change the settings as per the following.
1. Change the Power Saving Mode setting to "Half" or "Disabled"
2. Change the EEE (IEEE802.3az) setting to "Disabled"
Is any Port LED lamp (left) lit in orange?
If a Port LED lamp (left) is lit in orange, the respective port is shut off by the
loop detection/shutoff function. After canceling the loop connection under the
control of the ports, stand by for more than the recovery time until the loop
detection/shutoff automatically recovers, or cancel the port shutoffs from the
setting screen.
PoE power supply is impossible.
Power is not supplied to a Powered Device.
If you use an STP cable, PoE power supply may not be possible depending on
the installation environment. In such cases, use a UTP cable.
Is a CAT5e or better straight cable (RJ45-8/8) used?
Is the cable connected to the port 1–4 that supports PoE power supply?
Ensure that either the port alone or the entire equipment is not overloaded.
Is the Powered Device connected to the port compliant with the IEEE802.3at
standard or IEEE802.3af standard?
Is the upper threshold of the power supply manually (Manual) set in the range
of 15600 – 30000 mW?
(When power is being supplied to the PoE+ receiving devices which do not
support IEEE802.3at)
Port LED (Right) is blinking orange:
Ensure that the total power supply demand from PoE-powered devices does
not exceed 62 W .
When the power supply is suddenly shut off:
It is likely that a PoE-powered device in use has a different power consumption
in normal operation and standby states. Please confirm the PoE LIM. LED.
Confirm that a single port is not overloaded [the Port LED (left) is not blinking
orange] and that the maximum limit of the total power supply is not exceeded
(the PoE LIM. LED is not blinking orange).
* For detailed configuration and management method, please see
the PDF version Operating Instructions in CD-ROM.
Troubleshooting
