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Device
Standard
class
1
PoE and PoE+
2
PoE and PoE+
3
PoE and PoE+
4
PoE+ only
PoE troubleshooting
Here are some tips for correcting PoE problems that might occur:
•
disconnect one or more PoE devices to prevent PoE oversubscription. Start by
disconnecting the device from the highest-numbered port.
•
Make sure that the Ethernet cables are plugged in correctly. For each
powered device (PD) that is connected to the switch, the corresponding right
yellow, a PoE fault occurred and PoE halted because of one of the conditions
that are listed in the following table.
PoE Fault Condition
A PoE-related short circuit occurred on the
port.
The PoE power demand of the PD exceeded
the maximum level that the switch permits,
which is 30.9W.
The PoE current on the port exceeded the
The PoE voltage of the port is outside the
range that the switch permits.
Class
description
Very low
power
Mid power
High power
© NETGEAR, Inc., NETGEAR and the NETGEAR Logo
December 2019
are trademarks of NETGEAR, Inc. Any non-NETGEAR
trademarks are used for reference purposes only.
Minimum power
allocated to the
powered device
4.0W
7.0W
15.4W
30.0W
Possible Solution
The problem is most likely with the attached
PD. Check the condition of the PD or restart the
PD by disconnecting and reconnecting the PD.
Restart the switch to see if the condition
resolves itself.
Range of power
delivered to the
powered device
0.44W–3.84W
3.84W–6.49W
6.49W–12.95W
12.95W–25.5W
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