[RT-AC66W] Determining data usage by device

[LewisM]

Wired and wireless network via Comcast using RT-AC66W with latest firmware... Network has been working as expected for years. All of a sudden, data usage went through the roof for about a week (the last week of the month), and the network used 3/4 TB of data, throwing me over the Comcast 1TB cap. Using the "Traffic Manager," I can see data downloading at a steady 1500/1600 KB/sec at this moment, but I have no idea which of the 25 or so computers, phones, printers, NAS boxes, or IoT devices is using it. I do not knowingly have any computer running a program that downloads data.

How can I go from this "router total" traffic graph to something that shows data usage by device? Any help appreciated.

 

[JDB]

Does the QOS page not just do this?


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[RMerlin]

Need a newer router with the Trend Micro engine, or a third party firmware like Asuswrt-Merlin or Tomato to get this information.

 

[LewisM]

Does the QOS page not just do this?

Well, if you read the on-online help/manual, you'd certainly think so, but the Traffic Manager screen on my RT-AC66W doesn't match what is on-line. I don't have either of these two screens. This is with the most current firmware.