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Troubleshooting PoE Interfaces
Problem
A Power over Ethernet (PoE) interface is not supplying power to the powered device.
Solution
Check for the items shown in Table 1.
Table 1: Troubleshooting a PoE Interface
| Items to Check | Explanation |
|---|---|
Is the switch a full PoE model or a partial PoE model? | If you are using a partial PoE model, only interfaces ge-0/0/0 through ge-0/0/7 can function as PoE ports. |
Has PoE capability been disabled for that interface? | Use the show poe interface command to check PoE interface status. |
Is the cable properly seated in the port socket? | Check the hardware. |
Has the PoE power budget been exceeded for the switch? | Use the show poe controller command to check the PoE power budget and consumption for the switch. |
Does the powered device require more power than is available on the interface? | Use the show poe interface command to check the maximum power provided by the interface. |
If the telemetries option has been enabled for the interface, check the history of power consumption. | Use the show poe telemetries command to display the history of power consumption. |
