User's Manual
22
5. Troubleshooting
This chapter contains information to help you solve issues. If the GSD-804P is not
functioning properly, make sure the GSD-804P was set up according to instructions
in this manual.
Q1: The Link LED is not lit.
Solution:
Check the cable connection and also try to swap one new cable.
Q2: 1000BASE-TportlinkLEDislit,butthetracisirregular.
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.
Q3: Why the Switch isn’t connected to the network.
Solution:
Check the LNK/ACT LED on the GSD-804P. Try another port on the GSD-804P.
Make sure the cable is installed properly. Make sure the cable is the right type.
Turn o the power. After a while, turn on the power again.
Q4: Why the GSD-804P, connected to PoE device, cannot be powered on.
Solution:
1. Please check the cable type of the connection from the GSD-804P to the other
end. The cable should be an 8-wire UTP, Category 5e or above and EIA568 cable
within 100 meters. A cable with only 4-wire, short loop or over 100 meters will
aect the power supply.
2. Please make sure the device is fully complied with IEEE 802.3af/at standard.
Q5: What is the power output of each PoE port?
Solution:
1. Each PoE port supports 55V DC, 560mA and a maximum of 30 watts of
power output. Detect and inject by the standard of IEEE 802.3at.
2. Each PoE port supports 55V DC, 280mA and a maximum of 15.4 watts of
power output. Detect and inject by the standard of IEEE 802.3af