Attempt to set invalid channel 0 on AP

[atrepani]

Hi,

We are running version 8.2.100.0 on two WLC 5508 in HA mode.  When I enable my syslog server, a lot of theses message arrive periodicaly.  Do somebody saw this on their controller ?

It's only on 2.4 band.  Not on all AP.

*RRM-CLNT-2_4: May 30 10:23:32.142: %RRM-3-RRM_LOGMSG: [PA]rrmClientProc.c:736 RRM LOG: Airewave Director: Unable to set channel 0[20] on the on AP 84:B8:02:B6:C9:30(0)
*RRM-CLNT-2_4: May 30 10:23:32.142: %RRM-3-RRM_LOGMSG: [PA]rrmChanUtils.c:632 RRM LOG: Attempt to set invalid channel 0 on AP 84:B8:02:B6:C9:30(0)
*RRM-CLNT-2_4: May 30 10:23:32.141: %RRM-3-RRM_LOGMSG: [PA]rrmClientProc.c:736 RRM LOG: Airewave Director: Unable to set channel 0[20] on the on AP 84:B8:02:CD:BC:60(0)
*RRM-CLNT-2_4: May 30 10:23:32.141: %RRM-3-RRM_LOGMSG: [PA]rrmChanUtils.c:632 RRM LOG: Attempt to set invalid channel 0 on AP 84:B8:02:CD:BC:60(0)
*RRM-CLNT-2_4: May 30 10:23:32.141: %RRM-3-RRM_LOGMSG: [PA]rrmClientProc.c:736 RRM LOG: Airewave Director: Unable to set channel 0[20] on the on AP 84:B8:02:CE:59:70(0)
*RRM-CLNT-2_4: May 30 10:23:32.140: %RRM-3-RRM_LOGMSG: [PA]rrmChanUtils.c:632 RRM LOG: Attempt to set invalid channel 0 on AP 84:B8:02:CE:59:70(0)
*RRM-CLNT-2_4: May 30 10:23:32.140: %RRM-3-RRM_LOGMSG: [PA]rrmClientProc.c:736 RRM LOG: Airewave Director: Unable to set channel 0[20] on the on AP 84:B8:02:CE:A8:60(0)
*RRM-CLNT-2_4: May 30 10:23:32.140: %RRM-3-RRM_LOGMSG: [PA]rrmChanUtils.c:632 RRM LOG: Attempt to set invalid channel 0 on AP 84:B8:02:CE:A8:60(0)
*RRM-CLNT-2_4: May 30 10:23:32.139: %RRM-3-RRM_LOGMSG: [PA]rrmClientProc.c:736 RRM LOG: Airewave Director: Unable to set channel 0[20] on the on AP 84:B8:02:CE:AB:A0(0)
*RRM-CLNT-2_4: May 30 10:23:32.139: %RRM-3-RRM_LOGMSG: [PA]rrmChanUtils.c:632 RRM LOG: Attempt to set invalid channel 0 on AP 84:B8:02:CE:AB:A0(0)
*RRM-CLNT-2_4: May 30 10:23:32.139: %RRM-3-RRM_LOGMSG: [PA]rrmClientProc.c:736 RRM LOG: Airewave Director: Unable to set channel 0[20] on the on AP 84:B8:02:D3:28:00(0)
*RRM-CLNT-2_4: May 30 10:23:32.139: %RRM-3-RRM_LOGMSG: [PA]rrmChanUtils.c:632 RRM LOG: Attempt to set invalid channel 0 on AP 84:B8:02:D3:28:00(0)
*RRM-CLNT-2_4: May 30 10:23:32.138: %RRM-3-RRM_LOGMSG: [PA]rrmClientProc.c:736 RRM LOG: Airewave Director: Unable to set channel 0[20] on the on AP 84:B8:02:D3:2E:00(0)
*RRM-CLNT-2_4: May 30 10:23:32.138: %RRM-3-RRM_LOGMSG: [PA]rrmChanUtils.c:632 RRM LOG: Attempt to set invalid channel 0 on AP 84:B8:02:D3:2E:00(0)
*RRM-CLNT-2_4: May 30 10:23:32.137: %RRM-3-RRM_LOGMSG: [PA]rrmClientProc.c:736 RRM LOG: Airewave Director: Unable to set channel 0[20] on the on AP 84:B8:02:D3:4F:A0(0)
*RRM-CLNT-2_4: May 30 10:23:32.137: %RRM-3-RRM_LOGMSG: [PA]rrmChanUtils.c:632 RRM LOG: Attempt to set invalid channel 0 on AP 84:B8:02:D3:4F:A0(0)
*RRM-CLNT-2_4: May 30 10:23:32.131: %RRM-3-RRM_LOGMSG: [PA]rrmClientProc.c:736 RRM LOG: Airewave Director: Unable to set channel 0[20] on the on AP 84:B8:02:DC:70:60(0)
*RRM-CLNT-2_4: May 30 10:23:32.131: %RRM-3-RRM_LOGMSG: [PA]rrmChanUtils.c:632 RRM LOG: Attempt to set invalid channel 0 on AP 84:B8:02:DC:70:60(0)
*RRM-CLNT-2_4: May 30 10:23:32.130: %RRM-3-RRM_LOGMSG: [PA]rrmClientProc.c:736 RRM LOG: Airewave Director: Unable to set channel 0[20] on the on AP 84:B8:02:EB:F0:D0(0)
*RRM-CLNT-2_4: May 30 10:23:32.130: %RRM-3-RRM_LOGMSG: [PA]rrmChanUtils.c:632 RRM LOG: Attempt to set invalid channel 0 on AP 84:B8:02:EB:F0:D0(0)

ETC ...

*RRM-CLNT-2_4: May 30 10:03:10.135: %RRM-3-RRM_LOGMSG: [PA]rrmClientProc.c:736 RRM LOG: Airewave Director: Unable to set channel 0[20] on the on AP  84:B8:02:B6:C9:30(0)
*RRM-CLNT-2_4: May 30 10:03:10.135: %RRM-3-RRM_LOGMSG: [PA]rrmChanUtils.c:632 RRM LOG: Attempt to set invalid channel 0 on AP  84:B8:02:B6:C9:30(0)

thanks !

[tanner.zaitt]

Please could anyone explain why this event is happening on the logs and what is the fix ?

[marce1000]

 - The  particular error message  indicates that there was an attempt to set an invalid channel on an AP (access point) managed by a Cisco 5508 controller. The message states that the channel being attempted to be set is channel 0, which is not a valid channel.

There are a few possible causes for this error:

1. There may be an issue with the configuration of the AP or the controller. Make sure that the AP is properly configured and that the controller is configured to allow the AP to operate on a valid channel.

2. There may be interference on the channel being used by the AP. If the AP is experiencing interference, it may be necessary to change the channel being used to a less crowded one.

3. There may be a problem with the hardware of the AP or the controller. If the hardware is faulty, it may need to be replaced.

To troubleshoot this issue, you can try the following:

1. Verify the configuration of the AP and the controller to make sure that they are set up correctly.

2. Check for interference on the channel being used by the AP. If there is interference, try changing the channel being used by the AP.

3. Check the hardware of the AP and the controller to make sure that it is functioning properly. If the hardware is faulty, it may need to be replaced.
      Last but not least , upgrade the 5508 to the last software version it can use : https://software.cisco.com/download/home/282600534/type/280926587/release/8.5.182.0

 M.

[tanner.zaitt]

Hi, thank you for the information.

Could you please share more details what I have to check on controller and on the AP?

[tanner.zaitt]

I can provide these screenshots.
On the screenshots I see for 5 Ghz the channels are 36, 40, 44, 48, 60, 64.
But in wireless, I see channel 140 for the AP with errors in the logs.