[mrtg] Re: SNMP - No Response Received

[Peter Glanville]

> I am monitoring a NetGear FSM726S switch and the Linux box running MRTG
is
> connected to one of the ports.  The monitor interval is 5 minutes and
about
> 60% of the time, the switch will return the SNMP data but other times it
> does not and MRTG reports a "no response received" error message.
Sometimes
> MRTG will report the error for several consecutive intervals and then
there
> are no error messages for several consecutive intervals.
<snip>
>                  request ID: -1146335597

Negative request IDs are not supported by certain devices. MRTG uses a
random mix of +ve and -ve, hence the intermittant failure.
Edit mrtg-2.???\lib\mrtg2\snmp_session.pm
change $default_avoid_negative_request_ids to 1

Peter





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