SNMP Problem - No data received from host

[trungleviet]

Dear all, I am using NagiosCore 3.4.1 and nagios plugins is 1.4.11
I used check_snmp command to monitor some network devices (i set SNMP community on them and set this parameter in the check_snmp command also). But i received email alert from nagios : SNMP Problem - No data received from host

Could you please advice me how to fix this problem,

Many thanks for your supports,
Trung Le Viet

[gridd]

device should be also set up for sending snmp data for specific host (i.e. nagios host), this is usual security measure to prevent unauthorized access to snmp data returned by device.

check access to device by snmpwalk, you should see the list of returned values.