Enabling and disabling Power over Ethernet

NOTE
PoE is enabled by default and power is automatically allocated to all PoE-capable ports on bootup. If the PoE power allocation is disabled on bootup using the no inline power command and the configuration is saved (write memory), all the saved PoE configurations would get applied and PoE will not be enabled upon reboot. In such a scenario, PoE can be enabled as explained below.

To enable a port to receive inline power for power-consuming devices after changing the default behavior, use the inline power command for the appropriate port. Here is an example.

device# configure terminal
device(config)# interface ethernet 1/1/1
device(config-if-e1000-1/1/1)# inline power

Once you have entered the commands to enable inline power, the console displays the following message after PD is powered.

device(config-if-e1000-1/1/1)# PoE Info: Power enabled on port 1/1/1.

The following example disables inline power on a range of ports.

device# configure terminal
device(config)# interface ethernet 1/1/1 to 1/1/48
device(config-mif-1/1/1-1/1/48)# no inline power
PoE: Power disabled on port 1/1/1 because of admin off.
PoE: Power disabled on port 1/1/2 because of admin off.
PoE: Power disabled on port 1/1/3 because of admin off.
PoE: Power disabled on port 1/1/4 because of admin off.
PoE: Power disabled on port 1/1/5 because of admin off.
PoE: Power disabled on port 1/1/6 because of admin off.
PoE: Power disabled on port 1/1/7 because of admin off.
PoE: Power disabled on port 1/1/8 because of admin off.
PoE: Power disabled on port 1/1/9 because of admin off.
PoE: Power disabled on port 1/1/10 because of admin off.
PoE: Power disabled on port 1/1/11 because of admin off.
PoE: Power disabled on port 1/1/12 because of admin off.
PoE: Power disabled on port 1/1/13 because of admin off.
PoE: Power disabled on port 1/1/14 because of admin off.
PoE: Power disabled on port 1/1/15 because of admin off.
PoE: Power disabled on port 1/1/16 because of admin off.
PoE: Power disabled on port 1/1/17 because of admin off.
PoE: Power disabled on port 1/1/18 because of admin off.
PoE: Power disabled on port 1/1/19 because of admin off.
PoE: Power disabled on port 1/1/20 because of admin off.
PoE: Power disabled on port 1/1/21 because of admin off.
PoE: Power disabled on port 1/1/22 because of admin off.
PoE: Power disabled on port 1/1/23 because of admin off.
PoE: Power disabled on port 1/1/24 because of admin off.
PoE: Power disabled on port 1/1/25 because of admin off.
PoE: Power disabled on port 1/1/26 because of admin off.
PoE: Power disabled on port 1/1/27 because of admin off.
PoE: Power disabled on port 1/1/28 because of admin off.
PoE: Power disabled on port 1/1/29 because of admin off.
PoE: Power disabled on port 1/1/30 because of admin off.
PoE: Power disabled on port 1/1/31 because of admin off.
PoE: Power disabled on port 1/1/32 because of admin off.
PoE: Power disabled on port 1/1/33 because of admin off.
PoE: Power disabled on port 1/1/34 because of admin off.
PoE: Power disabled on port 1/1/35 because of admin off.
PoE: Power disabled on port 1/1/36 because of admin off.
PoE: Power disabled on port 1/1/37 because of admin off.
PoE: Power disabled on port 1/1/38 because of admin off.
PoE: Power disabled on port 1/1/39 because of admin off.
PoE: Power disabled on port 1/1/40 because of admin off.
PoE: Power disabled on port 1/1/41 because of admin off.
PoE: Power disabled on port 1/1/42 because of admin off.
PoE: Power disabled on port 1/1/43 because of admin off.
PoE: Power disabled on port 1/1/44 because of admin off.
PoE: Power disabled on port 1/1/45 because of admin off.
PoE: Power disabled on port 1/1/46 because of admin off.
PoE: Power disabled on port 1/1/47 because of admin off.
PoE: Power disabled on port 1/1/48 because of admin off.
NOTE
Inline power should not be configured between two switches, as it may cause unexpected behavior.
NOTE
FastIron PoE and PoE+ devices can automatically detect whether a power-consuming device is 802.3af- or 802.3at-compliant.