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WLC AP association

I can see my AP via cdp neigh from the cli of the WLC, but the AP doesnt join to my WLC, whats wrong?

1 ACCEPTED SOLUTION

Accepted Solutions
Hall of Fame Super Red

Re: WLC AP association

Hi Alejandro,

How's things?

This is a pretty common problem that is usually associated with one of 2 things;

1. The time setting on the WLC and the PC running the upgrade tool (must be in sync).

2. A problem with the SSC (Self Signed Certificate).

Have a look at these great threads from last year that provide answers to both problems.

http://forum.cisco.com/eforum/servlet/NetProf?page=netprof&forum=Wireless%20-%20Mobility&topic=General&CommCmd=MB%3Fcmd%3Dpass_through%26location%3Doutline%40%5E1%40%40.1ddb4d26

http://forum.cisco.com/eforum/servlet/NetProf?page=netprof&forum=Wireless%20-%20Mobility&topic=Getting%20Started%20with%20Wireless&CommCmd=MB%3Fcmd%3Dpass_through%26location%3Doutline%40%5E1%40%40.1ddaba5b

Here are some excellent docs;

Self-Signed Certificate Manual Addition to the Controller for LWAPP-Converted APs

http://www.cisco.com/en/US/products/ps6521/products_configuration_example09186a00806a426c.shtml

LWAPP Upgrade Tool Troubleshoot Tips

http://www.cisco.com/en/US/tech/tk722/tk809/technologies_tech_note09186a008072d9a1.shtml

Lightweight AP (LAP) Registration to a Wireless LAN Controller (WLC)

http://www.cisco.com/en/US/tech/tk722/tk809/technologies_tech_note09186a00806c9e51.shtml

Hope this helps!

Rob

2 REPLIES
Hall of Fame Super Red

Re: WLC AP association

Hi Alejandro,

How's things?

This is a pretty common problem that is usually associated with one of 2 things;

1. The time setting on the WLC and the PC running the upgrade tool (must be in sync).

2. A problem with the SSC (Self Signed Certificate).

Have a look at these great threads from last year that provide answers to both problems.

http://forum.cisco.com/eforum/servlet/NetProf?page=netprof&forum=Wireless%20-%20Mobility&topic=General&CommCmd=MB%3Fcmd%3Dpass_through%26location%3Doutline%40%5E1%40%40.1ddb4d26

http://forum.cisco.com/eforum/servlet/NetProf?page=netprof&forum=Wireless%20-%20Mobility&topic=Getting%20Started%20with%20Wireless&CommCmd=MB%3Fcmd%3Dpass_through%26location%3Doutline%40%5E1%40%40.1ddaba5b

Here are some excellent docs;

Self-Signed Certificate Manual Addition to the Controller for LWAPP-Converted APs

http://www.cisco.com/en/US/products/ps6521/products_configuration_example09186a00806a426c.shtml

LWAPP Upgrade Tool Troubleshoot Tips

http://www.cisco.com/en/US/tech/tk722/tk809/technologies_tech_note09186a008072d9a1.shtml

Lightweight AP (LAP) Registration to a Wireless LAN Controller (WLC)

http://www.cisco.com/en/US/tech/tk722/tk809/technologies_tech_note09186a00806c9e51.shtml

Hope this helps!

Rob

New Member

Re: WLC AP association

Do you have multiple APs already connected to your WLC? If so and you have clients attached to the WLC, the client can be multicast storming the WLC causing the new AP to not associate to the WLC. The AP probably gets an IP from the DHCP server and sends out an ARP request for the MAC address of the WLC - because the multicast storm caused by the clients the WLC can't reply to the AP before the TTL expires on the AP MAC address request causing it to reboot.

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