User's Manual

27
2.3.6 Alive Check
The GSD/GSW 802.3at PoE+ Switch series can be congured to monitor connected
PD’s status in realtime via traffic detection. Once there is no traffic at interval
time, the GSD/GSW 802.3at PoE+ Switch series is going to restart PoE port power,
and bring the PD back to work. It will greatly enhance the reliability and reduce
administrator management burden.
Object Description
Port Select the port number to enable Alive Check.
Status
Allows user to enable or disable per port PD Alive Check
function. All ports are disabled as default value.
Startup Time
(60~300s)
PD startup time.
This startup time is based on determining when to start to
measure the trafc. The default startup time is 180 seconds.
Interval Time
(60~300s)
Trafc detection counter.
The switch detects no trafc during this time and countdown
for interval time begins and port begins to reboot. The default
interval time is 180 seconds.
Power Off
(5~60s)
PoE Port Disable Timer
This column allows user to set the PoE device rebooting time.
The default power off time is 5 seconds.
The PD Alive Check is not a dening standard, so the PoE device on the market
doesn’t report reboots done information to the PoE Switch. So user has to make
sure how long it takes for the PD to nish booting, and then set the time value
related column.
The system is going to check the PD again according to the reboot time. If you
cannot make sure the precise booting time, we suggest you set it longer.