Radio reset cause

Noovi · ‎11-27-2023

Hello Guys,
I am having once cisco 5520 WLC with image running 8.10.185.3.

in one of AP i observerd user disconnection and when i saw in AP CLI i saw this.

Anyone knows if it is bug or any config issue. I have set DCA channel width to 'Best', so want to know if it is causing this issue.

Nov 27 00:04:28 kernel: [*11/27/2023 00:04:28.9074] 1:change to DFS channel 52, CAC for 60 seconds.
Nov 27 00:04:28 kernel: [*11/27/2023 00:04:28.9316] DOT11_DRV[1]: Stopped Radio 1
Nov 27 00:04:28 kernel: [*11/27/2023 00:04:28.9380] deinit DFS SM since radio is stopped before last CAC expired
Nov 27 00:04:28 kernel: [*11/27/2023 00:04:28.9549] DOT11_DRV[1]: DOT11_DRV[1]: set_channel Channel set to 52
Nov 27 00:04:29 kernel: [*11/27/2023 00:04:29.7779] 1:change to DFS channel 52, CAC for 60 seconds.
Nov 27 00:04:29 kernel: [*11/27/2023 00:04:29.8385] DOT11_DRV[1]: Started Radio 1
Nov 27 00:05:29 kernel: [*11/27/2023 00:05:29.5322] event-> CAC_EXPIRY_EVT
Nov 27 00:05:29 kernel: [*11/27/2023 00:05:29.6905] chatter: wl1: Beacon rate info: Previous: 252052736 Current: 251856128
Nov 27 00:05:29 kernel: [*11/27/2023 00:05:29.6905] chatter: wl1: Beacon PID : Previous: 6 Current: 3
Nov 27 00:25:02 kernel: [*11/27/2023 00:25:02.4139] DOT11_DRV[1]: DOT11_DRV[1]: set_channel Channel set to 60, CSA count 6
CAC for 60 seconds.nel: [*11/27/2023 00:25:02.9858] 1:change to DFS channel 60, --More--
Nov 27 00:25:03 kernel: [*11/27/2023 00:25:03.0422] DOT11_DRV[1]: Stopped Radio 1
Nov 27 00:25:03 kernel: [*11/27/2023 00:25:03.0486] deinit DFS SM since radio is stopped before last CAC expired
Nov 27 00:25:03 kernel: [*11/27/2023 00:25:03.0649] DOT11_DRV[1]: DOT11_DRV[1]: set_channel Channel set to 60
Nov 27 00:25:03 kernel: [*11/27/2023 00:25:03.8734] 1:change to DFS channel 60, CAC for 60 seconds.
Nov 27 00:25:03 kernel: [*11/27/2023 00:25:03.9340] DOT11_DRV[1]: Started Radio 1

Nov 27 06:59:34 kernel: [*11/27/2023 06:59:34.0287] *** RSN ERROR: Received a data frame when no keys are plumbed
Nov 27 06:59:34 kernel: [*11/27/2023 06:59:34.2575]
Nov 27 07:27:24 kernel: [*11/27/2023 06:59:34.2576] *** RSN ERROR: Received a data frame when no keys are plumbed
Nov 27 07:27:24 kernel: [*11/27/2023 07:27:24.3223]
Nov 27 07:27:24 kernel: [*11/27/2023 07:27:24.3224] *** RSN ERROR: Received a data frame when no keys are plumbed
Nov 27 07:27:24 kernel: [*11/27/2023 07:27:24.4232]
Nov 27 07:27:24 kernel: [*11/27/2023 07:27:24.4232] *** RSN ERROR: Received a data frame when no keys are plumbed
Nov 27 07:27:24 kernel: [*11/27/2023 07:27:24.4449]
Nov 27 07:27:24 kernel: [*11/27/2023 07:27:24.4449] *** RSN ERROR: Received a data frame when no keys are plumbed
Nov 27 07:27:24 kernel: [*11/27/2023 07:27:24.4449]
Nov 27 07:27:24 kernel: [*11/27/2023 07:27:24.4449] *** RSN ERROR: Received a data frame when no keys are plumbed
Nov 27 07:27:24 kernel: [*11/27/2023 07:27:24.4449]
Nov 27 07:27:24 kernel: [*11/27/2023 07:27:24.4449] *** RSN ERROR: Received a data frame when no keys are plumbed
Nov 27 07:27:24 kernel: [*11/27/2023 07:27:24.4606]
Nov 27 07:27:24 kernel: [*11/27/2023 07:27:24.4606] *** RSN ERROR: Received a data frame when no keys are plumbed

Leo Laohoo · ‎11-27-2023

Do not worry about APs or radios crashing because there is a very, very long list.

Noovi · ‎11-27-2023

But user faces disconnection for that time.

Leo Laohoo · ‎11-27-2023

What is the model of the AP in question?

Noovi · ‎11-27-2023

##- AP model is 3802 -##

Regards,

Vineet Shine

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JPavonM · ‎11-27-2023

If there is only 1-AP at that location then best avoid DFS channels, if there are more than one, then review your design to provide redundncy with 2nd signal option above -68bDm.

Noovi · ‎11-28-2023

Actually there are more than 8-10 APs per floor. For now we have decided to use RF profile with 40Mhz DCA and with non-DFS channel.