Allocation of PoE Power to Modules

The switch firmware determines the power available for PoE based on hardware configuration, power supply status, and power supply redundancy mode. The system calculates and reserves the correct amount of power required by the installed hardware components and then makes the balance of power available for PoE. When any change is made to the hardware configuration, power supply status, or redundancy mode, the firmware recalculates the power available for PoE.

On the S- K- and 7100-Series switch, you can manually configure the maximum percentage of PoE power available to the chassis as a percentage of the total installed PoE power with the set inlinepower available command. If the power needed or requested exceeds the power available, the system will generate a trap to notify the system manager, if traps are enabled.

The power available for PoE is distributed based on the configured allocation mode, set with the set inlinepower mode command: