D-Link DGS-1520 Emulator - Page 845

DGS-1520 Series Gigabit Ethernet Smart Managed Switch CLI Reference Guide interval retry waiting-time action (Optional) Specifies the interval for the system to issue ping requests to detect the target PD. The valid range is from 10 to 300 seconds. (Optional) Specifies the retry counts of ping requests when PD has no response. The valid range is from 0 to 5. (Optional) Specifies the waiting time for PD to recover from rebooting. The valid range is from 30 to 300 seconds. (Optional) Specifies the action of the system when PD does not reply the ping request. reset - Specifies to disable and then enable the PoE port state. notify - Specifies to send logs and traps to notify the administrator. both - Specifies to send log and trap first, and then reset the PoE port state. Default By default, this function is disabled. The default IP address of the target PD is none. The default interval for system to issue ping requests is 30 seconds. The default retry counts for ping requests is 2 times. The default waiting time for PD to recover from rebooting is 90 seconds. The default action when PD does not reply the ping request is both. Command Mode Interface Configuration Mode. Command Default Level Level: 12. Usage Guideline This function only takes effect on PoE enabled ports with power feeding. The PD alive check function provides the solution for the PD device that stops working or has no response via the ping mechanism. Use this command without any optional parameter to enable or disable the PD alive check function. By default, there is no IP address of the target PD for the system to execute the ping action. The IP address of the target PD must be configured by using the poe pd alive ip command before executing the PD alive check. The system needs to periodically monitor the specific PD by using the ping function. When there is no response, the system takes one of the actions configured by the poe pd alive action command. The interval between retry attempts can be configured by the poe pd alive interval command. The system implements the retry mechanism to check the PD status. The system will reset the PoE port power feeding after the retry by using Ping without any response from a PD. The retry count can be configured by the poe pd alive retry command. If the action is reset or both, the system needs to wait for PD to recover from rebooting and then executes the Ping function again. The waiting time for PD to recover from rebooting can be configured by the poe pd alive waiting-time command. If the PoE time range function is configured on the port that also enables the PD alive check function, the time range function has higher priority, and the PD alive check function will not work When the PoE time range function is still active. 841