Poe Troubleshooting Suggestions; Additional Troubleshooting Suggestions - NETGEAR GS724TPv2 Hardware Installation Manual

GS724TPv2 ProSAFE 24-Port Gigabit Smart Managed Switch with PoE+ and 2 SFP Ports

PoE Troubleshooting Suggestions

Here are some tips for correcting PoE problems that might occur:
• Make sure that the PoE Max LED is off. If the PoE Max LED is solid amber, 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 associated lower port LED on the switch lights solid green. If the lower port
LED lights solid amber, a PoE fault occurred and PoE halted because of one of the conditions that are
listed in the following table.
Table 7. 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.

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 new changes, one step at a time. Make sure that cable
distances, repeater limits, and other physical aspects of the installation do not exceed the Ethernet
limitations.
• Switch integrity. If necessary, verify the integrity of the switch by resetting it. To reset the switch,
disconnect the AC power from the switch and then reconnect the AC power. If the problem continues,
contact NETGEAR technical support. For more information, visit the support website at
support.netgear.com.
• Autonegotiation. The RJ-45 ports negotiate the correct duplex mode, speed, and flow control if the
device at the other end of the link supports autonegotiation. If the device does not support autonegotiation,
the switch determines only the speed correctly, and the duplex mode defaults to half-duplex.
The Gigabit Ethernet ports negotiate speed, duplex mode, and flow control if the attached device supports
autonegotiation.
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.
Troubleshooting
27