check snmp question

[XeloQ Communications]

Hello, 

Installed nagios on RH9 and running well. I try to implement the
chec_snmp service and therefore installed net-snmp with success. 

The units that I like to snmp are provided with a propietary MIB list.
The unit itself are prepared for the use of snmp. 

After in depth trying to get the snmpget to work I end up all the time
with a famous SNMP error  SNMP Problem No data received from host. 

My big question is the -o parameter in the check_snmp plugin. 

I do have the vendors SNMPv2 MIB definition txt file but I don't have
anything related to the OID information. 

As I understood from all the material I read sofar I need to tell the
snmpget what info he need to take out the device that I like to manage
by filling out the -o parameter by using some sort of number like
1.2.3.5.23.0 

What I would like to know if is I am right and if so  HOW to obtain the
appropriate numbers. 

My command while testing sofar is looking like this: 

check_snmp -H 200.84.100.100 -p 161 -P 1 -m /usr/share/snmp/mib/DEVICE.
MIB.txt -0 ?.?.?.?

Can anybody give me a hint here? 

Tjapko. 



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