Reboot & Alarm: It means system will reset the PoE port 
and issue an alarm message via Syslog, SMTP.   
  Alarm: It means system will issue an alarm message via 
Syslog, SMTP. 
• Reboot Time 
(30~180s) 
This column allows user to set the PoE device rebooting time, 
because there are so many kind of PoE devices on the market and 
they have different rebooting time. The PD Alive-check is not a 
defining standard, so the PoE device on the market doesn’t report 
reboots done information to NS3502-8P-2S, so user has to make 
sure how long the PD will be finished to boot, and then set the time 
value to this column.   
System is going to check the PD again according to the reboot time. 
If you cannot make sure precisely booting time, we suggest you to 
set it longer. 
 
Buttons 
: Click it to save changes. 
: Click it to reset configuration which doesn’t to be saved yet.