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Reset Radio Interface Dot11Radio0,QBSS Value: 100%,Reset can be expected due to harsh RF

Peter Setaffy
Level 1
Level 1

Dear team,
Can you please help me with identify logs from AP?
I have some APs where can I find this logs on syslog.

May 3 13:08:53.259: %DOT11-5-QBSS_INFO: Reset Radio Interface Dot11Radio0,QBSS Value: 100%,Reset can be expected due to harsh RF
May 3 13:08:53.259: %DOT11-2-FAILURE_RADIO_RESET: Interface Dot11Radio0, reset due to transmitter seems to have stopped(6)
May 3 13:09:02.815: %EVT-4-WRN: Write of flash:/event.r0 done
May 3 13:09:03.423: %LINK-5-CHANGED: Interface Dot11Radio0, changed state to resetPCI reset port 0
May 3 13:09:04.731: soap_pci_reconfig_radio: radio id 0
May 3 13:09:04.763: %LINEPROTO-5-UPDOWN: Line protocol on Interface Dot11Radio0, changed state to down
May 3 13:09:04.767: %CLEANAIR-6-STATE: Slot 0 down
May 3 13:09:09.663: %LINK-6-UPDOWN: Interface Dot11Radio0, changed state to up
May 3 13:09:10.663: %LINEPROTO-5-UPDOWN: Line protocol on Interface Dot11Radio0, changed state to up
May 3 13:09:35.539: %CLEANAIR-6-STATE: Slot 0 enabled

sh controllers Dot11Radio 0
...
Normal:
Code Count State When
10 53 STOP 20:50:41.783 UTC Wed Apr 21 2021
21 2 STOP 20:50:23.455 UTC Wed Apr 21 2021
27 1 STOP 20:50:41.711 UTC Wed Apr 21 2021
39 2 START 00:01:08.499 UTC Mon Mar 1 1993
40 1 STOP 20:50:41.947 UTC Wed Apr 21 2021
46 1 STOP 14:00:14.308 UTC Mon Apr 26 2021
56 4 STOP 14:00:12.872 UTC Mon May 3 2021
Failure:
Code Count State When
6 2 STOP 13:37:42.632 UTC Mon May 3 2021
23 4 STOP 10:02:18.507 UTC Thu Apr 29 2021
Prefetch: Trigger Active: 0 Recovery Disabled?: 0


Its AP: AIR-CAP2702E-E-K9

WLC: 5520

AireOS: 8.10.151.0

Mode: FlexConnect

Uptime about 1 week, 5 days

Have you some experience with this msgs please?

 

Thank you

Peter

1 Reply 1

saravlak
Spotlight
Spotlight

first, these continuous radio resets are expected when radio observes High channel utilization from its environment.
what's the 2.4ghz antenna model/gain.
Anyway, in this condition 2.4ghz on this radio can't serve clients properly with 100% qbss.

Remedy options:
1)Is it high-density environment. how many 2.4ghz neighbors seen by this AP.
//If there're way too many 2.4ghz neighbors then disable some of them to avoid CCI.

2)Following are some generally suggested options.
//Reduce the power through RRM/manual.
//Disable lower data rates.

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