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Power over Ethernet (PoE) is a feature which manages the distribution of electrical power to connected powered devices over the copper cables without the interference with the network traffic. The PoE Settings page allows you to enable PoE on a specified port. It also allows you to give ports a power priority level.
The PoE properties must be configured before this configuration can be completed. For more information please refer to the article, PoE Properties on Sx500 Series Stackable Switches.
This article explains how to configure Power over Ethernet (PoE) settings and to display data on the Sx500 Series Stackable Switches.
• Sx500 Series PoE Stackable Switches
Step 1. Log in to the web configuration utility on the switch, and choose Port Management > PoE > Settings. The Settings page opens:
Step 2. Choose the type of interface you wish to configure from the Interface Type drop-down list in the Filter field.
Step 3. Click the radio button of the port you want to modify and click Edit.
Step 4. (Optional) From the Unit/Slot and Port drop-down lists choose the port to configure.
• Unit/Slot — Choose the stacking member slot from the Unit/Slot drop-down list.
• Port — From the Port drop-down list choose the port to configure. This only affects the single port chosen.
Step 5. Check Enable in the PoE Administrative Status field to enable PoE for the selected port.
Step 6. Click the radio button of the desired priority level in the Power Priority Level field. A port with a lower priority level may be denied power over a port with a higher priority level if power is limited.
Step 7. If Port Limit Power Mode is chosen on the PoE Properties page, enter the value of allocated power in milliwatts in the Administrative Power Allocation field.
Step 8. If Class Limit Power Mode is chosen on the PoE Properties page the class number is displayed in the Class field. The class determines the power level.
• Class 0 — 15.4 Watts of maximum power is delivered by the port.
• Class 1 — 4.0 Watts of maximum power is delivered by the port.
• Class 2 — 7.0 Watts of maximum power is delivered by the port.
• Class 3— 15.4 Watts of maximum power is delivered by the port.
• Class 4 — 30 Watts of maximum power is delivered by the port.
These fields display statistics of the port.
• Max Power Allocation — The maximum amount of power (in milliwatts) allowed to the selected port.
• Power Consumption — The amount of power (in milliwatts) used by the powered device that is connected to the selected port.
• Overload Counter — How many times that a power overload has occurred on the port.
• Short Counter — How many times that there has been a power shortage on the port.
• Denied Counter — How many times that the connected device has been denied power.
• Absent Counter — How many times that the power has been stopped to the connected device because the device was not detected.
• Invalid Signature Counter — How many times an invalid signature has been received from the connected device.
Step 9. Click Apply.