Verifying usage data


Is there any way to verify that the data usage reporting is accurate?

We’ve had a few people whose usage numbers this month are far out of their normal pattern. We would like to look into it more, but really cannot find anything that could help us to determine that what is being reported is accurate. When you are billing for overage and the numbers are way out of the norm, you need to have confidence that they are right.



If you want a second opinion, I’d just store it in a secondary system so you have two different sources to compare to each other. You could use some kind of Netflow collector, or an SNMP based system, or pull it from RADIUS accounting. Your equipment might have some other export method as well.


We used to use Cacti. Sonar is just so much nicer-looking!


Cacti would definitely be an easy one.