D-Link DGS-1510-28P User Manual - Page 24

DGS-1510 Series Gigabit Ethernet SmartPro Switch Web UI Reference Guide The fields that can be configured are described below: Parameter Description Unit Select the switch unit that will be used for this configuration here. From Port / To Port Select the appropriate port range used for the configuration here. Maximum Receive Frame Size Enter the maximum receive frame size value here. This value must be between 64 and 9216 bytes. By default, this value is 1536 bytes. Click the Apply button to accept the changes made. PoE (DGS-1510-28P Only) The DGS-1510-28P switch supports Power over Ethernet (PoE) as defined by the IEEE 802.3af and 802.3at. All ports can support PoE up to 30W. Ports 1-24 can supply about 48 VDC power to Powered Devices (PDs) over Category 5 or Category 3 UTP Ethernet cables. The Switch follows the standard PSE (Power Sourcing Equipment) pinout Alternative A, whereby power is sent out over pins 1, 2, 3 and 6. The Switches work with all D-Link 802.3af capable devices. The Switch includes the following PoE features: • Auto-discovery recognizes the connection of a PD (Powered Device) and automatically sends power to it. • The Auto-disable feature occurs under two conditions: firstly, if the total power consumption exceeds the system power limit; and secondly, if the per port power consumption exceeds the per port power limit. • Active circuit protection automatically disables the port if there is a short. Other ports will remain active. Based on 802.3af/at PDs receive power according to the following classification: Class Maximum power used by PD 0 12.95W 1 3.84W 2 6.49W 3 12.95W 4 25.5W PSE provides power according to the following classification: Class 0 1 2 3 4 Max power supplied by PSE 16.2W 4.2W 7.4W 16.2W 31.6W PoE System This window is used to configure the PoE system, and display the detailed power information and PoE chip parameters for PoE modules. To view the following window, click System > PoE > PoE System, as shown below: 16