topic Re: 9800-CL WLC - No valid AP manager found for controller in Wireless

9800-CL WLC - No valid AP manager found for controller

brettlarkins — Mon, 05 Jul 2021 18:19:31 GMT

Standing up a 9800-CL wireless controller.

Got through the initial deployment, the Day Zero config, and can log into the WLC, but I cannot get my AP's to join it.

AP models are 1832 and 3802.

Tried WLC versions 16.11 and 16.12, both with the same results.

I can ping the WLC from the AP, and I can log into the GUI fine from my PC.

My AP's can reach the controller, but keep dropping the DTLS session when they try to join.

Here's the output from the console on the AP:

[*11/18/2019 22:08:20.0122] CAPWAP State: DTLS Teardown
[*11/18/2019 22:08:24.7707] No more AP manager addresses remain..
[*11/18/2019 22:08:24.7707] No valid AP manager found for controller 'C9800-CL' (ip: 10.10.221.200)
[*11/18/2019 22:08:24.7707] Failed to join controller C9800-CL.
[*11/18/2019 22:08:24.7707] Failed to join controller.
[*11/18/2019 09:58:31.0000]

Re: 9800-CL WLC - No valid AP manager found for controller

Rasika Nayanajith — Mon, 18 Nov 2019 22:28:54 GMT

Pls check this post as it describe a workaround for this issue

https://gblogs.cisco.com/ch-tech/setup-your-lab-with-catalyst-9800-cl/

HTH

Rasika

*** Pls rate all useful responses ***

Re: 9800-CL WLC - No valid AP manager found for controller

Diana L. — Wed, 24 Jun 2020 06:51:49 GMT

Hello! Is there a solution description for IOS WLC 9800-CL? Thanks in advance.

Best regards Diana

Re: 9800-CL WLC - No valid AP manager found for controller

Diana L. — Wed, 24 Jun 2020 08:49:39 GMT

I found the solution for my lab deployment. As I skipped the day-0 configuration Setup wizzard, I forgot to configure a trustpoint / certificate for the APs.

I had to manually create a trustpoint via CLI:

WLC_Lab#wireless config vwlc-ssc key-size 2048 signature-algo sha256 password 0 ...

WLC_Lab#show wireless management trustpoint
Trustpoint Name : WLC_Lab_WLC_TP
Certificate Info : Available
Certificate Type : SSC
Certificate Hash : a7fa051c906585774843fe2...
Private key Info : Available
FIPS suitability : Not Applicable

Now, the APs can connect to WLC.

Best regards

Diana

Re: 9800-CL WLC - No valid AP manager found for controller

brettlarkins — Wed, 24 Jun 2020 14:49:03 GMT

Yes, trustpoint certificate was my issue as well.

Thank you for posting the response!

Re: 9800-CL WLC - No valid AP manager found for controller

Scott Fella — Thu, 25 Jun 2020 01:04:21 GMT

Make sure you set NTP, have the country code and Trustpoint defined.

Re: 9800-CL WLC - No valid AP manager found for controller

patrickroberts — Tue, 28 Oct 2025 13:52:12 GMT

Hi All had same issue managed to fix it with the below

setup:

9800-CL esxi in HA

issued the below command on active 9800 to get AP to join

wireless config vwlc-ssc key-size 3072 signature-algo sha256 password 0 Cisco123456!

once i did this AP joined straight away

Re: 9800-CL WLC - No valid AP manager found for controller

patrickroberts — Tue, 28 Oct 2025 13:54:06 GMT

Hi All had same issue managed to fix it with the below

setup:

9800-CL esxi in HA

issued the below command on active 9800 to get AP to join

wireless config vwlc-ssc key-size 3072 signature-algo sha256 password 0 Cisco123456!

once i did this AP joined straight away