GigE graphing (especially 802.3ad aggregated links)

[doetraar]

Hello,

I'm trying to track down a graphing discrepancy that I've bumped into with respect to GigE links and Traffic graphs (bits/second, 64 bit counters, snmpv2).

Whenever traffic hits about 800Mbit on these links, the graphs simply stop displaying data. This is most apparent on 802.3ad links which per-interface regularly cross this boundary (but obviously not on the aggregated interface).

The two images attached show the problem best. Image.png is a 802.3ad interface whist Image2.png is a "standard" GigE.

The Graph Template for Traffic (bits/second) is set with auto-scaling, and I've tried various combinations of disabling this, setting upper limits, using the --alt-autoscale-max toggle, etc, but to no avail.

On my 10GigE links, graphs are working fine with the same 64 bit counters and Graph Template, so this feels like it's somehow associated with the percent of utilization of a link, but I can't see where/how.

What am I missing?

Thanks!

[rony]

Make sure that you max on the data source and the graphs are correct.