OverviewUser looking at Monitor -> Subnet page, total usage showing higher then actual circuit value.
By default the private networks are listed in this page (10.0.0.0, 172.16.0.0, 192.168.0.0). When additional subnets are monitored they are also included.
When a host passes traffic which will fall into multiple subnets being monitored, it's traffic will appear under all subnets which include it in their ranges.
This appears to show multiplied usage, however it is actually the same source being reported under multiple subnets.
This graph can be further filtered to limit it's contents, and remove the undesired subnet ranges.