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Interfaces and Device Settings Regular Firewall Interfaces Configure Firepower 1010 and Secure Firewall 1210/1220 Switch Ports Configure Switch Ports and Power Over Ethernet Configure Power Over Ethernet

Last updated: Aug 18, 2025

Configure Power Over Ethernet

Power over Ethernet (PoE) ports provide power for devices such as IP phones or wireless access points. PoE is enabled by default. This procedure describes how to disable and enable PoE and how to set optional parameters.

Procedure

1

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

2

Click Edit (edit icon) for Ethernet1/7 or 1/8 on Firepower 1010 or for any interface from Ethernet 1/5-1/8 on Secure Firewall 1210CP.
3

Click PoE.

PoE
Figure 1: PoE
4

Check the Enable PoE check box.

PoE is enabled by default.
5

Choose autonegotiation or manual power.

  • Auto Negotiate Consumption Wattage—Delivers power automatically to the powered device using a wattage appropriate to the class of the powered device. The firewall uses LLDP to further negotiate the correct wattage. When you connect a device of a certain class, it will be provisioned up to the maximum for that class in case it ever needs to use more power. For example, if you add a class 4 device that requests 12.95W, it will be allocated 30W even if it doesn't currently use all that power. Some devices can renegotiate power needs. If you know your device needs less power than is allocated, you can instead set the Consumption Wattage manually to free up the power for other devices.

  • Consumption Wattage—Uncheck the Auto Negotiate Consumption Wattage check box to set the manual wattage to manually specify the wattage in milliwatts, from 4000 to 30000. Use this option if you want to set the watts manually and disable LLDP negotiation. For manual allocation, the class will show in show power inline output as n/a because the class is not used to decide the power consumption.

    View the current PoE status using the show power inline command.
6

Click OK.

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.

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