Nagios Support Forum

Hello,
I have a temperature thermometer model P8510 - Intelligent Ethernet Thermometer (http://www.cometsystem.cz/)
I want to monitor this in Nagios. My command looks like this:
./check_snmp -H 10.xxx.xxx.xxx -P 1 -o enterprises.22626.1.5.2.1.2.0 -C public
SNMP OK - "18.8" |
I don't know how to set the warning and critical state. I have tried with -w 30:25 but it's not working.

What does the check return when you add a "-w" or "-c" with no values after them? Have you tried adding a hard value for each?:
Add them after your OID definition.

If I add -w or -c I get the same message SNMP OK -....

Well, you should not get a warning nor critical if the temp value is less than 20.

abrist wrote:Well, you should not get a warning nor critical if the temp value is less than 20.

If I add -w 18 or -w "18" or -w '18' I still don't get an Warning state.

Let's just try something to be sure it is working properly, although my guess is that it drops the decimal place, and only sends alerts for greater than the values specified. Try using "-w 10 -c 18"