Users Guide

Power Allocation to Additional Ports
When additional ports are enabled with PoE/PoE+, the power is allocated based on the budget. The power
budget is the amount of power available from the installed PSUs minus the power required to operate the
ports.
Use the show power inline and show power detail commands to determine if power is available for
additional PoE ports. For more information about these commands, see
Dell Networking OS Command Line
Reference Guide.
When you enable PoE/PoE+ on additional ports and the required power is more than the power supported by
the budget, the power is allocated as follows:
• If the newly PoE/PoE+ enabled port has a lower priority, then the command is accepted, but power is
not allocated to the port. In this case, the following message is displayed.
%Warning: Insufficient power to enable. POE oper-status set to OFF for port
• If the newly PoE/PoE+ -enabled port has a higher priority, then the command is accepted, and power is
terminated on the lowest priority port in the unit. If another power supply is added to the system at a
later time, both the ports receive power.
• If all of the lower priority ports combined cannot meet the power requirements of the newly enabled
port with high priority, then the command is accepted, but power on the lower priority ports is not
terminated, and no power is supplied to the port.
NOTE
: In the above scenario, even if a powered device is not connected to the port, the power is
allocated. The allocated power is deducted from the power budget and made unavailable to other ports.
Manage Legacy Devices
To detect and allocate inline power to the legacy devices on a stack unit, use the power inline legacy
stack-unit
unit-number command in Configuration mode.
This command has the following parameters.
• stack-unitunit-number — Specify the stack unit number. The range is from 1 to 12.
Example:
Dell(conf)#power inline legacy stack-unit 1
Suspend Power Delivery on a Port
You can temporarily disable and then restore power on a port.
To disable inline power on a port, use the power inline suspend stack-unit unit number command
in EXEC privilege mode. When you use this command, the inline power to all the ports on the specified stack
unit is disabled.
Power over Ethernet (PoE) 700