topic Re: WLAN Controller - reg in Wireless

WLAN Controller - reg

ctioko — Sat, 03 Jul 2021 22:59:53 GMT

Hi, I have been working with WLAN controller 4402 for a while now however some strange thing happened this morning. all registered LWAP APs disappeared. upon rebooting, all of the APs came back (registered) but started disapperaring one by one after a few seconds. anyone knows whts happening?

Re: WLAN Controller - reg

dennischolmes — Mon, 09 Jun 2008 13:52:17 GMT

Check the WLC date and time. It sounds like the certificates are out of synch. THe AP's have a certificate on them that allows for the encrypted LWAPP tunnel to be established between them and the controller. If the time on the controller is wrong then the APs will not join permanantly. The APs also will reboot several times if there has been a code update done on the WLC. This occurs as the APs look for the version of code they are running as compared to the one on the controller. If different, then the APs will download the version of code on the WLC, later version or earlier.

Re: WLAN Controller - reg

bbxie — Tue, 10 Jun 2008 05:01:15 GMT

you can run some debug commands in WLC CLI:

debug mac addr ap-mac-address

debug lwapp events enable

it will tell you what happend for those APs.

Re: WLAN Controller - reg

ctioko — Tue, 10 Jun 2008 07:26:25 GMT

Hi, I checked the time on the controller and adjusted it accordingly but the same thing keeps happening. the debugs show the controller receiving LWAPP Discovery Requests and responding succefully yet nothing else happens.

below is some logs

P Disassociated. Base Radio MAC:00:1b:2a:12:71:50

2 Tue Jun 10 08:11:16 2008 AP's Interface:1(802.11a) Operation State Down: Base Radio MAC:00:1b:2a:12:71:50 Cause=Max Retrasmission

3 Tue Jun 10 08:11:16 2008 AP's Interface:0(802.11b) Operation State Down: Base Radio MAC:00:1b:2a:12:71:50 Cause=Max Retrasmission

4 Tue Jun 10 08:11:04 2008 AP with Base Radio MAC 00:1b:2a:12:71:50 (NSSF-BLKA08thfloor-AP08B) is unable to associate. The regulatory domain configured on it '-E' does not match the controller's country code: Argentina

5 Tue Jun 10 08:11:02 2008 AP Associated. Base Radio MAC: 00:1b:2a:12:71:50

6 Tue Jun 10 08:10:59 2008 AP Disassociated. Base Radio MAC:00:1b:2a:12:71:f0

7 Tue Jun 10 08:10:59 2008 AP's Interface:1(802.11a) Operation State Down: Base Radio MAC:00:1b:2a:12:71:f0 Cause=Max Retrasmission

8 Tue Jun 10 08:10:59 2008 AP's Interface:0(802.11b) Operation State Down: Base Radio MAC:00:1b:2a:12:71:f0 Cause=Max Retrasmission

9 Tue Jun 10 08:10:58 2008 AP Disassociated. Base Radio MAC:00:1b:2a:12:70:a0

10 Tue Jun 10 08:10:58 2008 AP's Interface:1(802.11a) Operation State Down: Base Radio MAC:00:1b:2a:12:70:a0 Cause=Max Retrasmission

11 Tue Jun 10 08:10:58 2008 AP's Interface:0(802.11b) Operation State Down: Base Radio MAC:00:1b:2a:12:70:a0 Cause=Max Retrasmission

12 Tue Jun 10 08:10:58 2008 AP Disassociated. Base Radio MAC:00:1e:7a:3a:a9:90

13 Tue Jun 10 08:10:58 2008 AP's Interface:1(802.11a) Operation State Down: Base Radio MAC:00:1e:7a:3a:a9:90 Cause=Max Retrasmission

14 Tue Jun 10 08:10:58 2008 AP's Interface:0(802.11b) Operation State Down: Base Radio MAC:00:1e:7a:3a:a9:90 Cause=Max Retrasmission

15 Tue Jun 10 08:10:56 2008 AP Disassociated. Base Radio MAC:00:1b:2a:12:71:20

16 Tue Jun 10 08:10:56 2008 AP's Interface:1(802.11a) Operation State Down: Base Radio MAC:00:1b:2a:12:71:20 Cause=Max Retrasmission

17 Tue Jun 10 08:10:56 2008 AP's Interface:0(802.11b) Operation State Down: Base Radio MAC:00:1b:2a:12:71:20 Cause=Max Retrasmission

18 Tue Jun 10 08:10:56 2008 AP Disassociated. Base Radio MAC:00:1b:2a:12:72:50

19 Tue Jun 10 08:10:56 2008 AP's Interface:1(802.11a) Operation State Down: Base Radio MAC:00:1b:2a:12:72:50 Cause=Max Retrasmission

20 Tue Jun 10 08:10:56 2008 AP's Interface:0(802.11b) Operation State Down: Base Radio MAC:00:1b:2a:12:72:50 Cause=Max Retrasmission

21 Tue Jun 10 08:10:53 2008 AP Disassociated. Base Radio MAC:00:1b:2a:12:70:20

22 Tue Jun 10 08:10:53 2008 AP's Interface:1(802.11a) Operation State Down: Base Radio MAC:00:1b:2a:12:70:20 Cause=Max Retrasmission

23 Tue Jun 10 08:10:53 2008 AP's Interface:0(802.11b) Operation State Down: Base Radio MAC:00:1b:2a:12:70:20 Cause=Max Retrasmission

24 Tue Jun 10 08:10:48 2008 AP with Base Radio MAC 00:1b:2a:12:71:f0 (NSSF-BLKA05thfloor-AP05B) is unable to associate. The regulatory domain configured on it '-E' does not match the controller's country code: Argentina

25 Tue Jun 10 08:10:47 2008 AP with Base Radio MAC 00:1b:2a:12:70:a0 (NSSF-BLKA06thfloor-AP06B) is unable to associate. The re

Re: WLAN Controller - reg

pradeepk_123 — Tue, 10 Jun 2008 07:51:41 GMT

Hi,

Could you pl check the country codes/ regulatory domain on the controller. I think there is a mismatch between -E and -A..

Re: WLAN Controller - reg

dennischolmes — Tue, 10 Jun 2008 09:37:35 GMT

You do have a mismatch on regulatory domains. The APs with E in them are for European (ETSI)usage. The A is for US and an N would mean they were for North America excluding the US. You have either changed your regulatory domain on the controller or received APs for the wrong regulatory domain.

Re: WLAN Controller - reg

ctioko — Wed, 11 Jun 2008 07:37:32 GMT

Thanks so much guys for your insight but it is also interesting to know that an IP conflict caused all those symptoms. the AP Manager interface IP address was allocated to another device in the network.

Re: WLAN Controller - reg

dennischolmes — Wed, 11 Jun 2008 11:20:38 GMT

As stated in my post below, you still have to have a regulatory domain issue. The AP mentioned in the log states the "E" series AP. I would check all APs and verify you have the ones for the proper regulatory domain to insure that you have local RF compliancy.