Hi rmcguigan,
Have you enabled report data collection on your ports? By default this is disabled. If you go under Devices and select the specific device you'd like to collect statistics on. You can then right-click a port and select the
Collect Interface Statistics. There are two modes, Historical and Monitor, in order to be able to collect data that can be used in a report,
Historical stats should be collected.
.
In terms of how often these stats are collected, I think the default interval is 30 seconds, but I'd need to verify that or my colleagues could chip in with the exact interval. I hope I have understood your question correctly!