HP ProCurve 2520 Controlling PoE Allocation

Power Over Ethernet (PoE) Operation

Configuring PoE Operation

Priority	Configuration Command and Resulting Operation
Setting
Low	This priority class receives power only if all PDs on ports with High and Critical priority settings are
	receiving power. If there is enough power to provision PDs on only some Low priority ports, then power is
	allocated to the ports in ascending order, beginning with the lowest-numbered port in the class until all
	available power is in use. For this example, the CLI command to set ports to “Low” is:
	ProCurve(config)# interface 8-14 power low
- n/a -	For this example, PoE is disabled on these ports. The CLI command for this setting is:
	ProCurve(config)# no interface 15-23 power

Controlling PoE Allocation

The default option for PoE allocation is usage, which is what a PD attached to the port is allocated. You can override this value by specifying the amount of power allocated to a port by using the class or value options.

Syntax: [no] int <port-list> poe-allocate-by [usage class value]

	Allows you to manually allocate the amount of PoE power for
	a port by either its class or a defined value.
	usage: The automatic allocation by a PD
	class: Uses the power ramp-up signature of the PD to identify
	which power class the device will be in. Classes and their
	ranges are shown in table 11-1.
	value: A user-defined level of PoE power allocated for that port.
Note	The allowable PD requirements are lower than those specified for PSEs to
	allow for power losses along the Cat-5 cable.

11-10