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2.3.6 Alive Check
The FGSD/FGSW 802.3at PoE+ Switch series can be configured to monitor
connected PD’s status in real time via traffic detection. Once there is no traffic at
interval time, the FGSD/FGSW 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 traffic. The default startup time is 180 seconds.
Interval Time
(60~300s)
Traffic detection counter
The switch detects no traffic 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 defining 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 finish 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.
0
180
450
630
635
PD Traffic=0
Time(s)
Interval Time
Countdown
Startup
PD ready
PD Halt
No traffic!
Power
OFF
Power
ON
Startup
Interval
Power OFF
Figure 2-4:
Alive Check Mechanism
