Users Guide

82 Switch Feature Overview
For information about configuring PoE Plus features, see "Managing General
System Settings" on page 463 .
Key PoE Plus Features
Table 2-5 describes some of the key PoE Plus features.
7 75W +6%
8 90W +6%
Table 2-4. IEEE 802.3at Class Power Limits and Margin
Class Limit Margin
0 16.4W +5%
1 5W +5%
2 8W +5%
3 16.4W +5%
4 32W +5%
4-pair class 4 AT 64W +5%
Table 2-5. PoE Plus Key Features
Feature Description
Global Usage
Threshold
Provides the ability to specify a power limit as a percentage
of the maximum power available to PoE ports. Setting a
limit prevents the PoE switch from reaching an overload
condition.
Per-Port Power
Prioritization
Provides the ability to assign a priority to each PoE port.
When the power budget of the PoE switch has been
exhausted, the higher-priority ports are given preference
over the lower-priority ports. Lower priority ports are
automatically stopped from supplying power in order to
provide power to higher-priority ports.
Per-Port Power Limit Configurable power limit for each PoE-Plus port.
Table 2-3. IEEE 802.3bt Class Power Limits and Margin (Continued)
Class Limit Margin