Re: SNMP - Interface statistics query + In/Out bits with Total Bandwidth graph type + traffic over 113something Mbps = graph rollover

If you get the value from the 64 bit counter .
Maybe in your RRD, the maximum value you can store is 100000000

Look at this post, maybe it can help you :)

http://forums.cacti.net/viewtopic.php?f=2&t=46631

David


2013/2/7 Lukasz Sokol <[email protected]>

> Hi,
> using Cacti 0.8.7i;
>
> the topic more or less summarizes what I am experiencing;
>
> The SNMP query of Interface Statistics used came from the Generic
> SNMP-enabled Host
> Host Template.
>
> Whether I select the In/Out Bits with Total Bandwidth as normal or with
> 64bit counters,
> it doesn't change what the graphs show: when the (5 min avg) throughput
> goes over
> about 113 Mbps, the aforementioned 113Mbps is being substracted from the
> value returned
> and so the graph never shows more than 113Mbps.
> That wouldn't have bothered me much... before the link this is supposed to
> graph, got
> upgraded to 400Mbps (it was 185Mbps before, so it was clearly visible,
> where the rollover
> had happened...) Now it can rollover twice or thrice, it is itching...
>
> What I tried to do, was to cause the graphs to not use rigid boundaries and
> set Upper Limit to 1000000 (not using per-graph value) while still
> Auto-scale being on;
> (in graph templates);
>
> Also made the data template for Interface-traffic data source, Maximum
> Value to 'U',
> both on traffic_in and traffic_out;
>
> I don't know maybe there was some action required upon these changes?
> Still I accept that the historical data will not be amended that way, but
> the real question,
> is - how can I find out the values being graphed, starting from result of
> SNMP query, through
> data source, to what's fed into graph/rrdtool? To find the most likely
> culprit.
>
> Could it be, that the queried device returns 32bit values and that is the
> real problem ?
>
> Kind Regards,
> Lukasz
>
>
>
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