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Configuring Interfaces
Configuring Ethernet Interfaces
When you enter the power inline consumption default wattage or the no power inline consumption default global
configuration command, or the power inline consumption wattage or the no power inline consumption interface
configuration command this caution message appears:
%CAUTION: Interface interface-id: Misconfiguring the 'power inline consumption/allocation' command may
cause damage to the switch and void your warranty. Take precaution not to oversubscribe the power
supply.
It is recommended to enable power policing if the switch supports it.
Refer to documentation.
If the power supply is over-subscribed to by up to 20 percent, the switch continues to operate but its reliability is reduced.
If the power supply is subscribed to by more than 20 percent, the short-circuit protection circuitry triggers and shuts the
switch down.
For more information about the IEEE power classifications, see Power over Ethernet Ports, page 21.
Beginning in privileged EXEC mode, follow these steps to configure the amount of power budgeted to a powered device
connected to each PoE port on a switch:
To return to the default setting, use the no power inline consumption default global configuration command.
Beginning in privileged EXEC mode, follow these steps to configure amount of power budgeted to a powered device
connected to a specific PoE port:
To return to the default setting, use the no power inline consumption interface configuration command.
Command Purpose
1. configure terminal Enter global configuration mode.
2. no cdp run (Optional) Disable CDP.
3. power inline consumption default
wattage
Configure the power consumption of powered devices connected to
each the PoE port on the switch. The range for each device is 4000 to
15400 mW. The default is 15400 mW.
4. end Return to privileged EXEC mode.
5. show power inline consumption Display the power consumption status.
6. copy running-config startup-config (Optional) Save your entries in the configuration file.
Command Purpose
1. configure terminal Enter global configuration mode.
2. no cdp run (Optional) Disable CDP.
3. interface interface-id Specify the physical port to be configured, and enter interface
configuration mode.
4. power inline consumption wattage Configure the power consumption of a powered device connected to a
PoE port on the switch. The range for each device is 4000 to 15400 mW.
The default is 15400 mW.
Note: When you use this command, we recommend you also enable
power policing.
5. end Return to privileged EXEC mode.
6. show power inline consumption Display the power consumption status.
7. copy running-config startup-config (Optional) Save your entries in the configuration file.
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