Poe Troubleshooting Suggestions; Additional Troubleshooting Suggestions - NETGEAR GS408EPP Hardware Installation Manual

8-Port Easy Mount Gigabit Ethernet PoE+ Smart Managed Plus Switch GS408EPP

PoE troubleshooting suggestions

Here are some tips for correcting PoE problems that might occur on the switch:
• Make sure that the PoE Max LED is off. If the PoE Max LED is solid yellow, 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 right port LED on the switch lights
solid green. If the right port LED lights solid yellow, a PoE fault occurred and PoE
halted because of one of the conditions that are listed in the following table.
Table 4. PoE fault conditions and possible solutions
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. The maximum level is 15.4W for a PoE connection or
30W for a PoE+ connection.
The PoE current on the port exceeded the classification limit of the PD.
The PoE voltage of the port is outside the range that the switch permits.
Note: If you encounter a PoE fault condition, you can also change the PoE power mode
to see if that resolves the condition. By default, the PoE power mode is 802.3at, but you
can set the PoE power mode to 802.3af, Legacy, or Pre-802.3at. For more information,
see the user manual, which you can download from netgear.com/support/download/.

Additional troubleshooting suggestions

If the suggestions in the troubleshooting chart do not resolve the problem, see the
following troubleshooting suggestions:
• Network adapter cards. Make sure that the network adapters that are installed in
the computers are in working condition and the software driver was installed.
• Configuration. If problems occur after you alter the network configuration, restore
the original connections and determine the problem by implementing the changes,
Troubleshooting
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.
29 Hardware Installation Guide