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AP reboots with error "AP stuck in state Channel Select on radio x" with 11h enabled

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Information

 
TitleAP reboots with error "AP stuck in state Channel Select on radio x" with 11h enabled
Symptoms
AP reboots with error "AP stuck in state Channel Select on radio x" with 11h enabled in wlan service advanced settings
Environment
  • ExtremeWireless
  • AP39xx
  • Firmware 10.51.01
  • Firmware 10.51.02
  • 11h

 
Cause
Firmware bug
Resolution
Workaround
  • Disable 802.11h options in all wlan services used by the AP.
11h-support disable 
11h-power-reduction disable

Resolution:
  • Issue resolved in firmware 10.51.05 or higher 
Additional notes
Similar solution with different root cause: AP reboots with error "AP stuck in state Channel Select on radio x" with pre-auth enabled
Release Note: wns0022313 - Improved stability with 802.11h enabled and DFS events to properly scan for new channel after a radar event has occurred.

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