Configure Power Over Ethernet

Ethernet 1/7 and Ethernet 1/8 support Power over Ethernet (PoE) for devices such as IP phones or wireless access points. The Firepower 1010 supports both IEEE 802.3af (PoE) and 802.3at (PoE+). PoE+ uses Link Layer Discovery Protocol (LLDP) to negotiate the power level. PoE+ can deliver up to 30 watts to a powered device. Power is only supplied when needed.

If you shut down the switch port, or configure the port as a firewall interface, then you disable power to the device.

PoE is enabled by default on Ethernet 1/7 and Ethernet 1/8. This procedure describes how to disable and enable PoE and how to set optional parameters.

Procedure

Step 1

Select Devices > Device Management and click Edit (edit icon) for your threat defense device. The Interfaces page is selected by default.

Step 2

Click Edit (edit icon) for Ethernet1/7 or 1/8.

Step 3

Click PoE.

PoE
PoE

Step 4

Check the Enable PoE check box.

PoE is enabled by default.

Step 5

(Optional) Uncheck the Auto Negotiate Consumption Wattage check box, and enter the Consumption Wattage if you know the exact wattage you need.

By default, PoE delivers power automatically to the powered device using a wattage appropriate to the class of the powered device. The Firepower 1010 uses LLDP to further negotiate the correct wattage. If you know the specific wattage and want to disable LLDP negotiation, enter a value from 4000 to 30000 milliwatts.

Step 6

Click OK.

Step 7

Click Save.

You can now go to Deploy > Deployment and deploy the policy to assigned devices. The changes are not active until you deploy them.