[mrtg] Re: Forcing -v 1

Simon Westlake simon.westlake at bizwi.rr.com
Wed Dec 10 15:04:49 MET 2003

>> Hi,
>> I've recently setup MRTG+RRDTool on a new box and am having a 
>> small problem with SNMP. If I do:
>> snmpget -c public router oid
>> The connection times out. Specifying -v 1 makes it work, so I 
>> added a directive to force v1 in /etc/snmp/snmp.conf. I 
>> assumed this would affect MRTG, but it does not.
>> Looking over the MRTG configuration, it looks as though the 
>> only way to force this is to add :::::version onto the end of 
>> each target. Is there some way to globally force '-v 1' for 
>> all SNMP queries made?

>As far as I know the only global option is in the cfgmaker:
>  --snmp-options=:[<port>][:[<tmout>][:[<retr>][:[<backoff>][:<ver>]]]]
>but the default value is version 1.

Then the v1 SNMP isn't my problem, and it's something else.

I'm using MRTG 2.0.11 and RRDTool 1.0.45 along with MRTG-RRD.cgi.

snmpget works, and I get the correct information. Copying an identical config from an older machine (running an earlier version of MRTG+RRD) results in no data ever being graphed in the newer MRTG. MRTG.log is full of '*** did not eval into defined data' which generally means I'm trying to perform a calculation on null data, IIRC.

At first, I thought maybe the configuration needed to be changed in some way, but I looked over the MRTG config page and everything seems to be correct.

It's probably something stupid I'm missing.. I'll keep digging away at it today ;)

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