APs dropping from the WLC

danielnigrinis — Mon, 05 Jul 2021 20:15:20 GMT

Hello everyone,

I been working on an issue I have on the wireless Network, the APs are dropping from the WLC and im trying to get some ideas from the logs. I changed the APs from Local to FlexConnect but the result was the same, after certain time the APs start to diassociate from the WLC but I cant find the reason why.

When I check the logs on the WLC I see these:

APF-3-REG_STATE_CHANGE_FAILED: AP SlotId Updation with WLAN data failed for AP: XXX
APF-3-GET_MULTI_ENC_POL_FAILED: Could not Get Multicast Encryption Policy. Unsupported multicast cipher for WPA2.WPA2:0.

When you check the Traps on the WLC you see following output:

4 disassociated previously due to Link Failure. Reason: Capwap Discovery Request.

I Though the problem was a connectivity issue on the switch network but I confirmed that the switches can ping the APs when they disassociate from the WLC. So it seems not to be a connectivity issue.

Do you have any other ideas?

Thank you for your help, have a good day

Re: APs dropping from the WLC

Mark Elsen — Thu, 18 Feb 2021 08:33:10 GMT

- Connect to the AP when that happens and issue show logging

Re: APs dropping from the WLC

patoberli — Fri, 19 Feb 2021 12:52:40 GMT

Which firmware are you running? This might be some bug.

Re: APs dropping from the WLC

Rich R — Fri, 19 Feb 2021 14:04:47 GMT

What model of controller?
What model of AP?

What version of software?

What devices are in the network path between AP and WLC?

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APs dropping from the WLC

Re: APs dropping from the WLC

Re: APs dropping from the WLC

Re: APs dropping from the WLC