Serial Port Settings - D-Link xStack DGS-3620 Series Reference Manual

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xStack DGS-3620 Series Layer 3 Managed Stackable Gigabit Switch Web UI Reference Guide
The following parameters can be configured:
Parameter
Unit
From Port / To Port
State
Time Range
Priority
Power Limit
Click Apply to implement changes made. The port status of all PoE configured ports is displayed in the table in the
bottom half of the screen shown above.
NOTE: If the switch fails to supply power to the Powered Device (PD), that supports the IEEE
802.3at standard:
1. Check if the PD connected to the port, supports the IEEE 802.3at standard.
2. Manually configure the corresponding port's power limit value to 30 Watts.

Serial Port Settings

This window allows the user to adjust the Baud Rate and the Auto Logout values.
To view the following window, click System Configuration > Serial Port Settings, as shown below:
Description
Select the unit you wish to configure.
Select a range of ports from the drop-down menus to be enabled or disabled for PoE.
Use the drop-down menu to enable or disable ports for PoE.
Select a range of the time to the port set as POE. If Time Range is configured, the power
can only be supplied during the specified period of time.
Use the drop-down menu to select the priority of the PoE ports. Port priority determines
the priority which the system attempts to supply the power to the ports. There are three
levels of priority that can be selected, Critical, High, and Low. When multiple ports
happen to have the same level of priority, the port ID will be used to determine the
priority. The lower port ID has higher priority. The setting of priority will affect the order of
supplying power. Whether the disconnect method is set to deny low priority port, the
priority of each port will be used by the system to manage the supply of power to ports.
This function is used to configure the per-port power limit. If a port exceeds its power
limit, it will shut down.
Based on 802.3af/802.3at, there are different PD classes and power consumption
ranges;
1. Class 0 – 0.44~12.95W
2. Class 1 – 0.44~3.84W
3. Class 2 – 3.84~6.49W
4. Class 3 – 6.49~12.95W
5. Class 4 – 25.5W
The following is the power limit applied to the port for these five classes. For each class,
the power limit is a little more than the power consumption range for that class. This
takes into account any power loss on the cable. Thus, the following are the typical
values;
1. Class 0 – 15400mW
2. Class 1 – 4000mW
3. Class 2 – 7000mW
4. Class 3 – 15400mW
5. User Define – 35000mW
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