Poe Overview - NETGEAR GS728TPv2 Hardware Installation Manual

24-Port and 48-Port Gigabit PoE+ Smart Managed Pro Switches with 4 SFP Ports

PoE Overview

The switch can supply up to 30W Power over Ethernet Plus (PoE+, IEEE 802.3at) to each copper port, up
to the maximum power PoE budget for all active PoE+ ports. The switch is backward compatible with PoE
(IEEE 802.3af).
The number of PoE+ port and the maximum PoE power budget across all active PoE+ ports depends on
the switch model:
• GS728TPv2. 24 PoE+ ports with a maximum PoE power budget of 190W
• GS728TPPv2. 24 PoE+ ports with a maximum PoE power budget of 380W
• GS752TPv2. 48 PoE+ ports with a maximum PoE power budget of 380W
• GS752TPP. 48 PoE+ ports with a maximum PoE power budget of 760W
Supplied power is prioritized according to the port order, up to the total power budget of the device. For
example, for model GS728TPv2, port 1 receives the highest PoE priority, while port 24 is relegated to the
lowest PoE priority.
If the power requirements for attached devices exceed the total power budget of the switch, the PoE power
to the device on the highest-numbered active PoE+ port is disabled to make sure that the devices connected
to the higher-priority, lower-numbered PoE+ ports are supported first.
Although a device is listed as an 802.3at PoE+–powered or 802.3af PoE–powered device, it might not
require the maximum power limit that is specified by its IEEE standard. Many devices require less power,
allowing all PoE+ ports to be active simultaneously when the devices correctly report their PoE class to the
switch.
Using the local browser interface, you can control how PoE power is allocated across active PoE+ ports by
overriding the default or autodetected PoE power limits for individual PoE+ ports. You can also specify the
exact PoE power limit per port from 3.0W to 30.0W.
Applications
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