DFS(Dynamic Frequency Selection)
Description:
DFS(Dynamic Frequency Selection) is basically a wifi function that enables the WLANsto to use 5 GHz frequencies that are generally reserved for radars. Certified devices have the ability to enable DFS to take advantage of additional channel options while listening for radar communication to dynamically update their radio settings if necessary.
Mitigation:
Channel Utilization: NA
The number of DFS events that are seen by an Access Point is generally related to the physical location. DFS events will be most common near waterways and airports but can occur anywhere. Channels 52-116 and 132-140 are typically DFS channels in North America.
Meraki Solution:
The Meraki Cloud assigns the appropriate regulatory domain information to each Meraki Access Point. Which bands and channels that are available for a particular Meraki Access Point depend on the model, indoor/outdoor operation, and the regulatory domain.
- Login to your Meraki Dashboard
- Navigate to the “Wireless” tab on the left-hand column
- Under “Configure” click “Radio Settings”
- Click on “Edit Profile”
- Scroll down to the ‘Auto Channel” section.
- To quickly include or exclude DFS channels from the list of channels used by AutoChannel, the Select DFS channels or Deselect DFS channels button can be clicked.
- Check and see if the issue has been resolved.
- After the changes have been made, click “Save Changes”
- Go back to your WiFiScanner software and do another scan.
- Check and see if the issue has been resolved.