Museum clients suddenly disconnect when the AP moves off a DFS channel after radar detection. Which management exchange explains the coordinated move?
Select an answer to reveal the explanation.
Short Explanation
When radar says "vacate," the AP doesn't ghost the museum—it posts a Channel Switch Announcement. That CSA is the moving van notice so clients can follow (or drop if they can't).
Full Explanation
Under DFS, an AP detecting radar must leave the channel. Channel Switch Announcement information in Beacons/Probe Responses or Action frames informs associated clients of the target channel and timing. Clients that honor CSA can roam with the BSS; others may disconnect abruptly. Protocol analysis of CSA around the outage window distinguishes DFS-driven moves from random AP reboots.