Interface Statistics HIGHLY exaggerated, possible BUG

[terrac]

I am having a a problem with cacti 0.8.5 in it's reporting of interface statistics.
I have it graphing various ports on various routers and switches and every once in a while it will report a burst of traffic that is physically not possible. Maybe this is a bug with the averaging or something, but for example it has our T1 line registering a peak of 80Mb/sec... which is totally un-possible.

someone help. this is messing up my life right now.

:)
Terrac

[Tomeq]

I agree, it happens here as well. I'm getting 150 Mbit/s on 100 Mbit interfaces, on EVERY traffic graph, EVERY device I'm monitoring. Just a single peak, spoiling all the graphs.

[bulek]

for example it has our T1 line registering a peak of 80Mb/sec

Such problems do not occur when you have configured proper maximum value in your data source settings. For example for your T1 you should have 192000 value defined as a maximum (this is in bytes/sec). If the extra high value comes to your rrd file it will be dropped instead of storing it inside.

- Piotr

[Guest]

I've noticed this occurs when the counters are cleared on the device that is being monitored.