Orion not reporting right

Spiky

if i do real time monitong on an interface, it is averaging 80Mbps

yet this interface is shown in the top 10 list, but is only showing 5Mpbs utilisaztion on the link?

any reason for the big difference?

jtimes

What is your collect statistics frequency in Orion?  Basically its an average over time. 

In real time you have one sample divided by 1:  (80/1=80); where as if your collect statistics frequency is 5 minutes and the Time Period is the last hour its just a few more  samples (roughly 288 samples), and thus the average is lower.

Have you looked at that interface Min/Max/Average Utilization chart?

You don't have to set the polling cycle down to 1 minute to determine that a link is saturated, doing so only adds to the "administrative overhead" this is where Top 10(s), Thresholds, and Alerts come in.  For every interface type the magical number is different.

Hopefully that didn't confuse you more...