Symptom

9800-80 acting as a leader of group with about 10,000 APs shows no updates in the RF group updates or DCA changes Radio RF Grouping RF Group Name : default RF Protocol Version(MIN) : 100(30) RF Packet Header Version : 2 802.11a Group Mode : AUTO 802.11a Group Update Interval : 600 seconds 802.11a Group Leader : ewlc041 (x.x.x.x) 802.11a Last Run : 6112367 seconds ago show ap dot11 5ghz channel chassis active r0 Leader Automatic Channel Assignment Channel Assignment Mode : AUTO Channel Update Interval : 600 seconds Anchor time (Hour of the day) : 0 Channel Update Contribution Noise : Enable Interference : Enable Load : Disable Device Aware : Disable CleanAir Event-driven RRM option : Disabled Channel Assignment Leader : wlc (x.x.x.x) Last Run : 6111649 seconds ago

Conditions

9800-80 controller running on 17.3.5a with SMU patched RF group loaded with about 10000 APs APs 9120 seems to be the only model affected

Workaround

Current workaround is to restart the RRM on WLC. #ap dot11 5ghz/24ghz rrm grouping restart

Further Problem Description