How to Check Bandwidth Usage Across Your Network
Most bandwidth problems get investigated after the complaints arrive, and by then the traffic that caused them has moved on. The numbers you need sit in several places at once. A laptop knows its own traffic. The router knows what leaves for the internet, and only the switches see how much network bandwidth moves inside the building. Checking bandwidth usage at the right layer saves hours of guessing. Most of the methods ship with hardware you already own.