Real-time bandwidth provides live monitoring of any router interface in graph form. Data are reset when the page first loads¹⁾, and the display draws gradually. The maximum display window is 10 minutes, and data resolution is 2 seconds. That means 10 minutes of data can be displayed at a time, and that data can be sampled every 2 seconds, at most. Only one interface at at a time can be displayed. Clicking on the interface name in any square will display the bandwidth of that interface. The interfaces available to be monitored will depend on the router hardware and configurations (e.g., using a VPN or virtual wireless interfaces).

Example of FreshTomato interfaces (it might vary based on SW release & HW model):
vlan2: wired WAN port on the router
vlan1: wired LAN ports on the router
eth0: all Ethernet ports on the router
eth1: wireless 2.4 GHz
eth2: wireless 5 GHz (if equipped)
br0: software bridge of vlan1, eth1, eth2 (what is commonly called LAN)

Avg. Applies a percentile to the display. This can show how a data point compares to the total distribution (graph) over time.
Max: Choosing Uniform scales graphs to the maximum value recorded on all interfaces. Choosing Per If (Per Interface) scales graphs based on data from one interface only.
Unit: kbit/KB, Mbit/MB - toggles between displaying volume in kilobits/Kilobytes (1,000) or megabits/Megabytes (1,000,000).
Display: Choosing Solid graphs bandwidth usage with a solid area, choosing Line graphs bandwidth with a single line representing maximum values.
Color: Switch between different, pre-specified color schemes for the graph.

[reverse] : Reverses the graph's color scheme. For example, a device traced in blue is traced in orange and a device traced in orange is traced in blue.

Cursor-Tracking Readout: Bandwidth graphs feature a a Cursor-Tracking Readout. When you move your mouse cursor over the graph, the graph displays the following at the top right corner: Day of Week,
Time, and Bandwidth usage. These update when you move the mouse.

The Cursor-Tracking Readout disappears after 5 intervals: that is, 10 seconds in Real-Time, 10 minutes in Last 24 Hours, etcetera.

Mouse-Click Readout: Bandwidth graphs also feature a Mouse-Click Readout: If you click on the graph, the date/time/bandwidth numbers will display beside the mouse cursor.

Note: Mouse-click readout is static. It does not update with graph movement or scaling.