D-Link Switch User Manual
8
Understanding the Switch’s Features
Power Over Ethernet (PoE)
The DGS-1026MP supports many PoE features to guarantee the safety and stability of the Switch and the
connected powered devices.
PoE Power Budget:
The total PoE budget of the DGS-1026MP is limited to a maximum of 370 watts to both
protect the Switch and to stabilize the power being transmitted to the PoE-powered devices.
Guard Band:
The DGS-1026MP reserves a 2 watts Guard Band to prevent the PoE power supply from
exceeding the maximum PoE power budget of 370 watts. When the Switch detects the current PoE output has
reached the maximum of 370 watts, and another device is connected to the Switch, the Switch will check which
type of device is being connected. If the device is another PoE-powered device, the Switch will disconnect the
power on the port with the higher port number in order to power the new device.
PoE Port Priority:
The DGS-1026MP is configured to have predefined PoE priorities for all PoE ports to
prevent problems such as power budget overloading. Lower number ports have a higher priority for supplying
power than higher number ports (i.e. port 1 > port 2 > … > port 24). When the Switch detects a PoE budget
overload, the power supply from the higher number ports will be cut off first.
For example: When ports 2 to 13 are supplying a combined total of 370 watts of power to the attached clients,
and a new PoE-powered device is connected to port 1, the power supply from port 13 will be disconnected
first.
Power Saving
The DGS-1026MP supports IEEE 802.3az Energy Efficient Ethernet (EEE), which will constantly monitor all
ports for activity and will put inactive ports into a sleep mode to save power.
