Thanks for the replies thus far. I think one thing to note from the https://documentation.meraki.com/General_Administration/Privacy_and_Security/Dashboard_Data_Availability page is that there is no port usage element for the ports on the MX. What I also need to confirm is the data usage statistics vs the bandwidth usage reporting, the bandwidth reporting might be averaged or recorded at an infrequent rate but the listed download and upload data might be accurate in terms of total volume. What I'm considering is things like how we poll switches/routers from Solarwinds for instance for collection of bandwidth usage and data volumes, in some cases we poll for 1 minute statistic intervals to get more accurate usage data than the default 9 minute for instance. I'll probably raise a support case for a more accurate answer once I check in with our customer account team on this first.
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