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What is DFS? #
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DFS channels are special 5 GHz Wi-Fi channels shared with radar systems (like weather or military radar).
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Wi-Fi devices must listen for radar and switch channels if radar is detected.
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Common DFS channels are:
52, 56, 60, 64, 100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140, and sometimes 144 (depending on the region).
Why Exclude DFS Channels? #
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Avoids Wi-Fi interruptions caused by radar detection.
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Makes Wi-Fi connections more stable and reliable.
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Helps APs start faster since they don’t have to scan for radar first.
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Easier to manage because channels don’t change unexpectedly.
When Should You Exclude DFS? #
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If your Wi-Fi needs to be very stable without sudden drops.
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If you are near radar systems or in areas with interference.
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If your environment (like offices or hospitals) can’t tolerate Wi-Fi interruptions.
Steps 1: Navigate to the Profiles section, select Radio, then click View/Edit.
Steps 2 : Enable Exclude DFS checkbox and then save your changes.
