Configuration Guide Configuring PoE Configuration
Setting the Maximum Power of a Port
You can set the maximum power of a port to restrict the maximum output power of the port.
For a switch in auto or energy-saving mode, you can set the maximum power of a port to restrict the maximum output
power of the port, so that the port stops supplying power to the PD on the port when the actual power of the port reaches
the maximum output power of the port and this status lasts for a certain period of time. Then the PD on the port will be
powered off, and the LED of the port will be displayed in yellow. Ten seconds later, the port will be powered on again. If
the power of the port is still higher than the maximum power of the port, the power will be powered off again. This process
keeps going on.
If you do not set the maximum power for a port, the system will not check the maximum power of the port.
Enters the global configuration mode
Ruijie(config)# interface fastEthernet interface-id
Enters the interface configuration mode and specifies the
physical port to be configured
Ruijie(config-if)# poe max-power int
Sets the maximum power of the port, which ranges from
0 to 30 in watts with a precision of one decimal point
Ruijie(config-if)# no poe max-power
Disables the maximum power settings of the port
For example, you can run the following commands in turn to set the maximum power of a port to 17 W and then enable the
PoE function on this port:
Ruijie# configure
Ruijie(config)# interface FastEthernet 0/1
Ruijie(config-if)# poe max-power 17
Ruijie(config-if)# poe enable
Ruijie(config-if)# end
This command is valid only for a switch in auto or energy-saving mode.
For a switch in auto or energy-saving mode, setting the maximum power of a port to 0 will cause the port to be
powered off and no longer powered on.
For a PoE switch that only supports 802.3af, the maximum power of a port can be set to a value ranging from 0 to 15.4.
If you run the max-power command for a switch in auto mode, the power management algorithm will calculate the
power to be allocated to a port according to the configurations with the max-power command.
Setting the Power to Be Allocated to a Port
You can set the port to be allocated to a port so as to set the output power of the port in static mode.
If the static mode is applied for power management, this command is used to specify the power to be allocated to a port. If
power is not specified for ports after a PoE switch initially changes to the static mode, the system will allocate 15.4 W to
each port if the PoE switch only supports 802.3af or 30 W power to each port if the PoE switch supports 802.3at. If the
system power is not enough to allow for all ports, ports with smaller port numbers will obtain power first.
Enters the global configuration mode
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