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Access points joining different WLC

hi

i have a wireless controller module( NME-AIR-WLC25-K9) installed in a Cisco 2851 ISR, this setup is in my remote site, we are connected through MAN network. In our main office i have a cisco 4402 wireless controller. so whenever i install a AP in my remote site instead of joiining the remote site WLC, the access point joins my main office 4402 controller, i dont why it is happening, the AP is not even trying to join the remote site WLC.. i have not configured high availability and both these controller are in separate RF network.

the firmware version in NME-AIR-WLC25-K9 is 7.0.98.0 ...

the version in the other controller is 6.0.196.0

Please let me know what is else i need to check asap

Thanks

karthik

2 ACCEPTED SOLUTIONS

Accepted Solutions
Hall of Fame Super Gold

Re: Access points joining different WLC

That's not the point.

Presume you have two controllers:  WLC-A and WLC-B.

You have an AP who you want to join WLC-A but instead will always join WLC-B.

The solution is to configure "High Avlailability" with WLC-A details entered as the Primary Controller.  This will force the AP to join the correct controller:  WLC-A.

Does this answer your question?

Cisco Employee

Re: Access points joining different WLC

Hi,

  Did you even see the AP trying to join the local controller?  If the controller are in different domains, the AP will prefer the remote controller since it join that one first.  Since you are running 5.2, try configure on the AP the primary controller with the name, and local IP address of the local controller, and then reboot the AP.  See if after that the AP join. run debug capwap events enable to see if you see the AP event trying to join the controller.

Regards,

Manuel

18 REPLIES
Cisco Employee

Re: Access points joining different WLC

Hi,

  You should check if you have DNS configure to resolve to cisco-lwapp-controller or cisco-capwap-controller  to the correct controller.  Also, did you configure option 43 on the DHCP server to point to the correct controller.

Regards,

Manuel

Re: Access points joining different WLC

I added the dns configure to resove cisco-lwapp-controller and cisco-capwap-controller to the correct controller, also configured option 23 on the dhcp server, did vendor specific option to the controller, but the ap is still joining the remote controller instead of the one which is pointed or local...i seriously don’t know what is the issue

Hall of Fame Super Gold

Re: Access points joining different WLC

Any particular reason why you don't want to configure "High Availability"?

Re: Access points joining different WLC

we have enabled mac-filtering and also one controller which support 50 ap is already with 48, the another one supports 25 and we have 24 ap so high availability is of no use

Hall of Fame Super Gold

Re: Access points joining different WLC

That's not the point.

Presume you have two controllers:  WLC-A and WLC-B.

You have an AP who you want to join WLC-A but instead will always join WLC-B.

The solution is to configure "High Avlailability" with WLC-A details entered as the Primary Controller.  This will force the AP to join the correct controller:  WLC-A.

Does this answer your question?

Re: Access points joining different WLC

To I need to configure it for each and every Access point which is having problem or a stand configuration in the controller

Hall of Fame Super Gold

Re: Access points joining different WLC

In your unique case, I'd configure HA on the AP that's misbehaving.

Please don't forget to rate our posts.  Thanks.

Re: Access points joining different WLC

Hi leo

I went to WCS and there was an option for AP configuration template, so through that I created a new template to forcefully join the primary controller and pushed it to the APs which have not joined the local controller. And it worked so perfectly. Thanks to you for your suggestions.

Hall of Fame Super Gold

Re: Access points joining different WLC

Glad to hear it's working.  May I ask if you can mark this thread as "Answered" please?  Thanks.

it is running the new version 5.x

Cisco also recommends anyone to stay away from 5.X and 6.X.  If you need 802.11n support, use the newer 7.0 firmware.

Re: Access points joining different WLC

Did the same you have asked thanks for your help

Hall of Fame Super Gold

Re: Access points joining different WLC

Thanks.

Glad to be of some assistance.

Cisco Employee

Re: Access points joining different WLC

Hi,

  Did you even see the AP trying to join the local controller?  If the controller are in different domains, the AP will prefer the remote controller since it join that one first.  Since you are running 5.2, try configure on the AP the primary controller with the name, and local IP address of the local controller, and then reboot the AP.  See if after that the AP join. run debug capwap events enable to see if you see the AP event trying to join the controller.

Regards,

Manuel

Re: Access points joining different WLC

I tried the see whether the AP is joining the local controller but it is not I enable debug capwap events in local wlc , but there is no event at all,

Cisco Employee

Re: Access points joining different WLC

Hi,

Is that is the case, you probably better opening a TAC case so a TAC

engineer can review the switch, and wlc, and router config.

Regards,

Manuel

Re: Access points joining different WLC

I created a template and pushed to the Access points which were joined different controller to join their appropriate local controller. I cannot create a case because we don’t have current support contract on it

Re: Access points joining different WLC

Hi

I went to WCS and there was an option for AP configuration template, so through that I created a new template to forcefully join the primary controller and pushed it to the APs which have not joined the local controller. And it worked so perfectly. Thanks to you for your suggestions.

Hall of Fame Super Gold

Re: Access points joining different WLC

i have not configured high availability and both these controller are in separate RF network.

Configure high availability will allow you to instruct the AP to join the WLC of your choice.  Let us know if you are running 4.X because this process needs to be done using CLI only.

Re: Access points joining different WLC

It is not running 4.x it is running the new version 5.x

The upgrade was done so that they can support 1142n Access points

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