Chapter 12
| Power over Ethernet Commands
– 377 –
Command Usage
â—† The switch only provides power to the Gigabit Ethernet copper-media ports.
â—† When detection is enabled for PoE-compliant devices, power is automatically
supplied when a device is detected on the port, providing that the power
demanded does not exceed the port’s power budget or the switch’s power
budget.
â—† Use the power inline priority command to set the priority for power supplied to
specific ports.)
Example
Console(config)#interface ethernet 1/1
Console(config-if)#power inline
Console(config-if)#exit
Console(config)#interface ethernet 1/2
Console(config-if)#no power inline
Console(config-if)#
power inline
maximum allocation
This command limits the power allocated to specific ports. Use the no form to
restore the default setting.
Syntax
power inline maximum allocation milliwatts
no power inline maximum allocation
milliwatts - The maximum power budget for the port.
(Range: 3000 - 34200 milliwatts)
Default Setting
34200 milliwatts
Command Mode
Interface Configuration (Ethernet ports 1-12/24)
Command Usage
â—† All the RJ-45 ports supports both the IEEE 802.3af PoE and the IEEE802.3at-2009
PoE Plus standards. The total PoE power delivered by all ports cannot exceed
the 390W power budget. This means that up to 11 ports can supply a maximum
34.2W of power simultaneously to connected devices (802.3at), or all 12/24
ports can supply up to 15.4W (802.3af).
â—† If a device is connected to a switch port and the switch detects that it requires
more than the maximum power allocated to the port or to the overall switch,
no power is supplied to the device (i.e., port power remains off).
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