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New Member

LAP cant discover and join WLCM

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?

7 REPLIES
Cisco Employee

Re: LAP cant discover and join WLCM

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

New Member

Re: LAP cant discover and join WLCM

It's a new installation. No firewalls or ACLs.

router 38xx with WLCM and 1130 APs.

Hall of Fame Super Gold

Re: LAP cant discover and join WLCM

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.

New Member

Re: LAP cant discover and join WLCM

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.

Hall of Fame Super Gold

Re: LAP cant discover and join WLCM

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

New Member

Re: LAP cant discover and join WLCM

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.

New Member

Re: LAP cant discover and join WLCM

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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