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Communications fail.
Is the link-up correct?
When the Power Saving Mode (power saving mode of the MNO series) or EEE
(IEEE 802.3az Energy Efficient Ethernet function) is enabled, some connected
terminals may not be correctly linked. Change the setting as follows.
1. Change the Power Saving Mode setting to Disabled.
2. Change the EEE (IEEE 802.3az) setting to Disabled.
Is the Port LED (right) lit in orange?
If the Port LED (right) lit in orange, the port is shut down by the loop detection
function. Eliminate the loop connection of the device connected to the port
first, and then wait longer than the time required for automatic recovery from
the shutdown by the loop detection function, or release the port shutdown
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 1–24 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 IEEE802.3af
standard
or IEEE802.3 at Type 1 (15.4W) standard?
Is the STATUS/ECO LED blinking orange?
If you use this Switching Hub outside the operating ambient temperature
range (high temperature), the protection function works and stops the PoE
power supply. In this condition, the STATUS/ECO LED blinks orange.
When the power supply mode LED is lit and a Port LED (left) is blinking
orange:
Ensure that the total power supply demand from PoE-powered devices does
not exceed 124 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.
After turning on the PoE LED (power supply mode), 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.
