User Guide 22
Managing System System
IEEE 802.3af and 802.3at are both PoE standards. The standard process of PoE power
supply contains powered-device discovery, power administration, disconnect detection
and optional power-device power classification.
■ PSE
Power sourcing equipment (PSE) is a device that provides power for PDs on the Ethernet,
for example, the PoE switch. PSE can detect the PDs and determine the device power
requirements.
■ PD
Powered device (PD) is a device receiving power from the PSE, for example, IP phones and
access points. According to whether PDs comply with IEEE standard, they can be classified
into standard PDs and non-standard PDs. Only standard PDs can be powered via TP-Link
PoE switches.
SDM Template
SDM (Switch Database Management) Template is used to prioritize hardware resources for
certain features. The switch provides three templates which allocate different hardware
resources for different usage, and you can choose one according to your need.
Time Range
With this feature, you can configure a time range. You can use the time range when you
configure other features like ACL.
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