Allied Telesis IE200 Series User Manual
Page 65
Chapter 6: Troubleshooting
AT-IE200 Series Installation Guide
65
Problem: The AT-IE200-6FP or AT-IE200-6GP switch is not providing power to a PoE device.
Solution: Try the following:
Review the PD’s documentation to confirm that the device supports Mode A of the IEEE
802.3at standard. Mode A is one of two modes that define the connector pins that
deliver the power from the port on the switch to the PD. In Mode A, the power is
carried on pins 1, 2, 3, and 6 on the RJ-45 port, the same pins that carry the network
traffic. The second mode, Mode B, defines pins 4, 5, 7, and 8 as the power carriers. The
switches do not support Mode B. Most powered devices are designed to accept power
by either mode, but some legacy devices may only support one mode. This can be
verified by reviewing the device’s documentation or data sheet. Legacy devices that only
support Mode B will not work with the switch.
Check that the device’s power requirements do not exceed 30 watts. This can be
verified by reviewing the device’s documentation or data sheet.
Verify that you are using the appropriate category of twisted-pair cable.
Use the management software on the switch to determine whether PoE is enabled on
the port. The default setting for PoE is enabled.
Use the management software on the switch to determine whether the PoE power
setting for the port has been reduced to a value below the power requirements of the
device.
Try connecting the device to a different port on the switch.