About availability report, are the data is fake?

[dewanggaba]

Hi, i have installed Nagios Core in RHEL.

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Red Hat Enterprise Linux Server release 5.6 (Tikanga)

There are the packages :

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nagios-3.3.1.tar.gz
nagios-plugins-1.4.15.tar.gz

And then, I was add all of my host di router.cfg, here is the file configuration :
HOST

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define host{
        host_name                       my.host-name.com
        alias                           my.host-name.com
        address                         11.11.14.245
        use                             router-panjunan
        }

GROUP

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define hostgroup{
        hostgroup_name  router
        alias           Router Panjunan
        members    my.host-name.com
        }

SERVICE

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define service{
        host_name                       my.host-name.com
        use                             router-service
        service_description             HTTP
        check_command                   check_http
        }

But, when I create report availability
Step1: Select Report Type --> Select HostGroup
Step2: Select HostGroup --> Select Router
Step3: Report Period (Today) --> Create Availability Report

Here is the screen shot, there is no real data


Actualy, tasikmalaya.panjunan.com is down. But how to get the fact about those data?