Hello!

Please provide more details about the issue, with graphs, logs... anything which can help to understand the problem.

Kind regards,
Alexey.

I have added 3 devices through ICMP Ping in last test showing up only.But In dashboard its showing in UNKNOWN not available

Please show the configuration of your hosts, their host interfaces, an item configuration page.

Kind regards,
Sergey

I can't find the item configuration page in the screenshots you have attached.

Kind regards,
Sergey

Above picture1 added host ip address & Added template ICMP Ping

Please show the ICMP check item configuration, I can't see it attached.

By the way, also have you installed fping on the server?

Kind regards,
Sergey

In last data its showing up only.& I am using default icmp template module configuration only.

What about fping?

KR,
Sergey

i have not installed separately using .ovf VMWare appliance

Hello, 

Does the problem still exist for you?