Users Guide

86 Switch Feature Overview
If the remaining available power (threshold power - guard band - current
power consumption) is less than the computed power draw of the new device,
the device is not powered up. By default, the guard band is 32 watts.
Regardless of the power management mode, if the device being powered up is
a Class 1, 2, or 3 AF device, then the guard band is configured according to
the device class.
Dynamic or Static Power Management Mode Guard Band
In these modes, the guard band for the port being powered up is 32 watts.
Class-Based Power Management Mode Guard Band
In this mode, the dynamic guard band for the port being powered up is:
• For Class 0 AF device: 16.4 watts
• For Class 1 AF device: 5 watts
• For Class 2 AF device: 8 watts
• For Class 3 AF device: 16.4 watts
• For Class 4 AF device: 16.4 watts
• If the PD is an AT device, the guard band is 32 watts regardless of the
detected class.
PoE Plus Default Settings
The following table shows the default PoE Plus settings for the Dell EMC
Networking N1108P-ON/N1124P-ON/ N1148P-ON, N1524P/N1548P,
N2024P/N2048P, N2128PX-ON, N3024P/N3048P, and N3132PX-ON switches.
Table 2-2. PoE Plus Key Features (Dell EMC Networking N1108P-ON/N1124P-ON/
N1148P-ON, N1524P/N1548P, N2024P/N2048P, N2128PX-ON, N3024P/N3048P/N3048EP-
ON, and N3132PX-ON Only)
Feature Description
Global Usage Threshold 90%
Per-Port Admin Status Auto
Per-Port Power Prioritization Enabled (globally, per-port priority is Low
Per-Port Power Limit None