topic Re: Cisco 5520 - Version 8.10.171.0 - No more AP manager addresses rem in Wireless

Cisco 5520 - Version 8.10.171.0 - No more AP manager addresses remain

Awacs2000 — Thu, 22 Dec 2022 15:30:34 GMT

Hi all,

our customer has a WLC 5520 with Version 8.10.171.0

All APs are working, except (probably) 5 of the model 2802

They ONLY join if you finally ping them once. The whole thing is very strange.

In the log you only see:

[*12/22/2022 14:51:53.7951] No more AP manager addresses remain..
[*12/22/2022 14:51:53.7951] No valid AP manager found for controller 'BLABLABLA' (ip: 192.168.208.110)
[*12/22/2022 14:51:53.7951] Failed to join controller BLABLABLA.
[*12/22/2022 14:51:53.7951] Failed to join controller.

And will be shown in in a continuous loop. Join request, response from controller and then the above output, again and again.

Until you ping the IP of the AP at some point and boom, it joined immediately.

I can't find anything helpful online about the "No more AP manager addresses remain" message, except that there used to be a recommendation to use 49 APs per manager.

Interestingly, the customer has 49 APs here.

But I also switched off 2 APs for a test, so that we were on 47 and still AP No. 48 didn't join (unless you pinged)

Ideas????

Re: Cisco 5520 - Version 8.10.171.0 - No more AP manager addresses rem

Mark Elsen — Thu, 22 Dec 2022 16:29:04 GMT

- What's in the controller logs when this happens ?

Re: Cisco 5520 - Version 8.10.171.0 - No more AP manager addresses rem

Awacs2000 — Thu, 22 Dec 2022 16:34:12 GMT

Hi marce1000,

what do you mean exactly?
debug capwap events enable and so on?

Nothing helpful. I even do not see the IP of the AP that he´s got from the DHCP in those logs.

Re: Cisco 5520 - Version 8.10.171.0 - No more AP manager addresses rem

Mark Elsen — Thu, 22 Dec 2022 16:48:40 GMT

- You see nothing at all in the controller logs when this ap tries to join , I do refer indeed for the time being to the 'normal logs' (show logging) , so is the IP address being allocated to the AP correct and within the range of addresses intended for your access points ?

Re: Cisco 5520 - Version 8.10.171.0 - No more AP manager addresses rem

Awacs2000 — Thu, 22 Dec 2022 17:06:58 GMT

The only thing I can see currently is:
*spamApTask6: Dec 22 15:43:54.423: %CAPWAP-3-DTLS_CLOSED_ERR: [PA]capwap_ac_sm.c:7521 6c:8b:d3:22:81:00: DTLS connection closed forAP 192:168:208:46 (5248), Controller: 192:168:208:110 (5246) Echo Timer Expiry
*spamApTask6: Dec 22 15:43:54.423: %CAPWAP-3-ECHO_ERR: [PA]capwap_ac_sm.c:8271 Did not receive heartbeat reply; AP: 6c:8b:d3:22:81:00

But I have to re-check this tomorrow as the customer is not in the Office anymore.

Re: Cisco 5520 - Version 8.10.171.0 - No more AP manager addresses rem

Mark Elsen — Thu, 22 Dec 2022 18:03:06 GMT

- Ok , also check if the controller has sufficient licenses to provide and or support all the access points ,

Re: Cisco 5520 - Version 8.10.171.0 - No more AP manager addresses rem

Awacs2000 — Thu, 22 Dec 2022 18:43:04 GMT

Yeah, licenses are ok.

Re: Cisco 5520 - Version 8.10.171.0 - No more AP manager addresses rem

Awacs2000 — Thu, 22 Dec 2022 20:34:58 GMT

Now I hava another problem. For testing I activated "Master Controller Mode"

All APs are gone now for hours and are not coming back.
Redundancy Mode is SSO

Already restarted both controllers. No luck.
I have 2702 and 2802
Log does not help currently

Re: Cisco 5520 - Version 8.10.171.0 - No more AP manager addresses rem

Awacs2000 — Thu, 22 Dec 2022 20:36:56 GMT

AAA authentication failed in Join Request.

Re: Cisco 5520 - Version 8.10.171.0 - No more AP manager addresses rem

Awacs2000 — Thu, 22 Dec 2022 20:51:34 GMT

I did a ping to all APs and now they are registered again. That is so strang and does not make any sense

Re: Cisco 5520 - Version 8.10.171.0 - No more AP manager addresses rem

Scott Fella — Thu, 22 Dec 2022 22:01:47 GMT

You do have LAG enabled? Have you tried to break SSO and see if you have any issues? Take one of the controllers offline and see if you have issues maybe with one of them.

Re: Cisco 5520 - Version 8.10.171.0 - No more AP manager addresses rem

Awacs2000 — Fri, 23 Dec 2022 06:21:47 GMT

I rebooted the primary and the problem ist still there.
Accesspoint will just register, when I ping them.
Looks like there comes the request and then the response, but the response is not getting back to the Accesspoint.
They are not talking with each other unless I ping.

There is no firewall inbetween.

Re: Cisco 5520 - Version 8.10.171.0 - No more AP manager addresses rem

Mark Elsen — Fri, 23 Dec 2022 07:51:01 GMT

- Have a checkup of the controller configuration with https://cway.cisco.com/wireless-config-analyzer , it needs the output of show run-config , with no prompts in between ,