Aruba - Channel Width

Wifi scanner spectrum graph (check channel width column)

WiFi channels are each allotted a 20 MHz segment in the frequency band they're in, and can also be bonded together to form wider segments. The width of a WiFi channel dictates how much data can pass through and at what speed, where the wider channels are usually associated with more data transferred at faster speeds

Aruba Solution

1. Login to Aruba Virtual Controller
2. Click Configuration
3. Click RF
4. Enable ARM in the drop-down