D-Link DGS-1250 User Manual - Page 32

DGS-1250 Series Gigabit Ethernet Smart Managed Switch Web UI Reference Guide PD Alive This window is used to configure the PD Alive function for PDs connected to the PoE ports. The ping function is used to check if PDs, connected to the PoE ports, are active or not. When PDs appear to be inactive, the specified action (Reset, Notify, or Both) will be taken. To view the following window, click System > PoE > PD Alive, as shown below: Figure 3-14 PD Alive Window The fields that can be configured are described below: Parameter From Port - To Port PD Alive State PD IP Address Poll Interval Retry Count Waiting Time Action Description Select the appropriate port range used for the configuration here. Select to enable or disable the PD Alive function on the specified port(s). Enter the IP address of the PD here. Enter the poll interval here. This is the interval between ping messages from the system to PDs connected to the PoE port(s). By default, this value is 30 seconds. The range is from 10 to 300 seconds. Enter the retry count here. This is the amount of ping messages that will be sent (at each interval) when PDs are not responding. By default, this value is 2. The range is from 0 to 5. Enter the waiting time here. This is how long the system will wait before sending ping messages to the PD connected to the PoE port after the Reset action was taken. By default, this value is 90 seconds. The range is from 30 to 300 seconds. Select the action that will be taken here. Options to choose from are: • Reset - Specifies to reset the PoE port state (turn PoE off and on). • Notify - Specifies to send logs and traps to notify the administrator. • Both - Specifies to send logs and traps to notify the administrator and to reset the PoE port state (turn PoE off and on). Click the Apply button to accept the changes made. 23