Chapter 4. Troubleshooting
This chapter contains information to help you solve issues. If the TT-DT10-2G-8GP+ is not functioning
properly, make sure the TT-DT10-2G-8GP+
was set up according to instructions in this manual.
The Link LED is not lit.
Solution:
Check the cable connection or swap to a different cable.
1000BASE-T port 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 is not connected to the network.
Solution:
Check the LNK/ACT LED on the TT-DT10-2G-8GP+. Try another port on the TT-DT10-2G-8GP+. 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 TT-DT10-2G-8GP+, connected to PoE device, cannot be powered on.
Solution:
Please check the cable type of the connection from the TT-DT10-2G-8GP+ to the other end. The cable should
be an 8-wire, Category 5 or above Ethernet cable using EIA568 standards within 100 meters. A cable with only
4-wires, a short loop or over 100 meters will affect the power supply.
Please make sure the device is fully compliant with IEEE 802.3af/IEEE 802.3at standard.
What is the power output of each PoE port?
Solution:
1. Each PoE port supports 53V-54 DC, 600mA and a maximum of 30 watts of power output. Detected and
injected by the standard of IEEE 802.3at.
2. Each PoE port supports 53V-54 DC, 300mA and a maximum of 15.4 watts of power output. Detected and
injected by the standard of IEEE 802.3af.
