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5. Troubleshooting
This chapter contains information to help you solve issues. If the 802.3at PoE+
Switch is not functioning properly, make sure the 802.3at PoE+ Switch was set up
according to instructions in this manual.
The Link LED is not lit.
Solution:
Check the cable connection and also try to swap one new cable.
LNK/ACT link LED is lit, but the traffic is irregular.
Solution:
Make sure the attached device is not set to full duplex. Some devices use a
physical or software switch to change duplex modes. Auto-negotiation may not
recognize this type of full-duplex setting.
Why the Switch doesn’t connect to the network
Solution:
Check the LNK/ACT LED on the 802.3at PoE+ Switch. Try another port on the
802.3at PoE+ Switch. Make sure the cable is installed properly. Make sure the
cable is the right type. Turn off the power. After a while, turn on the power again.
Why the FGSW-1822VHP/FGSW-2622VHP, connected to PoE device, can
not be powered on
Solution:
1. Please check the cable type of the connection from FGSW-1822VHP/FGSW-
2622VHP to the other end. The cable should be an 8-wire UTP, Category 5 or
above and EIA568 cable within 100 meters. A cable with only 4-wire, short loop
or over 100 meters will affect the power supply.
2. Please make sure the device is fully complied with IEEE 802.3af/IEEE 802.3at
standard.
What is the power output of each PoE port?
Solution:
1. Each PoE port supports
53 to 54V DC, 600mA
and a
maximum of 30 watts
of power output. Detect and inject by the standard of IEEE 802.3at.
2. Each PoE port supports
53 to 54V DC, 300mA
and a
maximum of 15.4
watts
of power output. Detect and inject by the standard of IEEE 802.3af.
