22.3.2 Priority control of power supply

You can use the configuration command power inline to prioritize power on a per-port basis. If there is insufficient power to supply, this feature allows you to specify which ports are guaranteed to supply power and which ports are stopped. If no priority is specified by the configuration, the priority is set as high by default. If multiple ports have the same settings, the port with the smallest port number takes priority.

The Switch supplies power to the ports with the highest priority according to the priority set for each port on the entire Switch. On the other hand, when the configuration command power inline priority-control disable is set, the power supply to the port already connected takes precedence regardless of the priority of each port. In this configuration, power is supplied to the previously connected power-receiving device in priority. Therefore, if the power-receiving device is connected to a higher-priority port with the total power consumption exceeding the maximum supply power of the Switch, power is not supplied to the power-receiving device.

The following tables show the relation between power inline priority-control disable command and power inline command settings and port priorities.

Table 22-15 Relationship between the setting of the power inline priority-control disable and power inline commands and the port priority

Configuring power inline priority-control disable Commands	Setting Priority Parameters with power inline Commands	Port operation
Not set	critical	Provides power as the most critical port.
	high	Power is supplied at priority "High".
	low	Power is supplied at the priority "Low".
	never	Turn off the power.
Set	critical	Ignores the priority for each port.
	high
	low
	never	Turn off the power.