LAP cant discover and join WLCM

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May 28th, 2009
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All configuration according this guide

http://www.cisco.com/en/US/partner/tech/tk722/tk809/technologies_tech_note09186a00807112e2.shtml#c3


but LAP cant discover and join WLCM .


debug from controller modul



debug capwap *Jan 02 01:22:07.585: 00:21:a0:f8:fa:d0 Received LWAPP DISCOVERY REQUEST from AP 00:21:a0:f8:fa:d0 to 00:15:2c:ea:22:a0 on port '1'

*Jan 02 01:22:07.586: 00:21:a0:f8:fa:d0 LWAPP Discovery Request AP Software Version: 0x502b200

*Jan 02 01:22:07.586: Discarding discovery request in LWAPP from AP 00:21:a0:f8:fa:d0 supporting CAPWAP


the versions of controller and LAPs is the same 5.2.157

can anybody tell me what's wrong?

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Peter Nugent Thu, 05/28/2009 - 14:58
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The code version supports capwap rather than lwapp it could be a firewallblocking UDP ports 5246 and 5247.


I have not done a deployment with CAPWAP yet but the aps are compatible and will take the new code when they can communicate.


Is this a new install or a code upgrade?


http://www.cisco.com/en/US/docs/wireless/controller/5.2/configuration/guide/Controller52CG.html

ramstopgun2007 Thu, 05/28/2009 - 20:09
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It's a new installation. No firewalls or ACLs.

router 38xx with WLCM and 1130 APs.


Leo Laohoo Thu, 05/28/2009 - 15:24
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Console into the LAP.


If the LAP can ping the WLC Management IP Address, type the following command from the LAP: lwap ap controller ip address


Hope this helps.

ramstopgun2007 Thu, 05/28/2009 - 20:04
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I can ping from both sides , WLCM to AP and from AP to WLCM.

but discovery reques is discarted((

when i'm trying to enter this command the AP tells me that command is not supported.

Leo Laohoo Thu, 05/28/2009 - 20:11
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Type the following command from the LAP: lwap ap controller ip address

ramstopgun2007 Thu, 05/28/2009 - 22:04
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May 28, 2009, 9:11pm PST


Type the following command from the LAP: lwap ap controller ip address


when i'm trying to enter this command the AP tells me that command is not supported.

crispregional Sat, 08/21/2010 - 21:28
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Just worked through this one, if anyone is interested.  The issue with the WLCM, as mentioned in the configuration document is it must have an IP helper-address added for the IP of the LAN (sub)interface the AP is on.  I went a step further and added IP helper-address settings for both the Integrated-Service-Module and the subinterface of the AP management interface on the router.  I also discovered that my switch, even though on the same management VLAN, required the IP helper-address in the VLAN interface to pass the broadcast UDP packets.  Hope this helps someone.

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