WLC Registered

Unanswered Question
Sep 7th, 2009

I have two Wireless LAN controller en the Networks. One WLC is in the building A and the second WLC is in the building B. The access points installed in the Building A, are registered in the Wireless LAN Controller A, this controller is configured as the primary WLC. The problem is that the access points are registered in the WLCA but sometimes the APS goint to registered to WLCB, the access point remains registered in the WLCB around 10 - 15 seconds, and the access go back to WLCA.

I enter ping command to IP Address Managment of the WLCA, and no paquet loss are showed in the output of the ping command.

So, but Why the access point going to WLCB ?

I have captured the messages in a LAP, this output is available in the attachment file.

The timers in the Wireless LAN Controller A,are as following:

Authentication Response Timeout (seconds)........ 10

Rogue Entry Timeout (seconds).................... 1200

AP Heart Beat Timeout (seconds).................. 30

AP Discovery Timeout (seconds)................... 10

AP Local mode Fast Heartbeat (seconds)........... disable

AP Hreap mode Fast Heartbeat (seconds)........... disable

AP Primary Discovery Timeout (seconds)........... 360

Thanks !!

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Leo Laohoo Mon, 09/07/2009 - 15:23

I'm suspecting it's because you did not configure the Primary/Secondary/Tertiary Controllers.

For WLC firmware is 3.X or 4.X, look at Using the CLI to Configure Backup Controllers

http://www.cisco.com/en/US/docs/wireless/controller/5.0/configuration/guide/c5lwap.html#wp1249692

For WLC firmware 5.X and later, look at Using the GUI to Configure Backup Controllers

http://www.cisco.com/en/US/docs/wireless/controller/5.1/configuration/guide/c51lwap.html#wp1334437

Hope this helps. Please rate when applicable or helpful.

ricardorojas123 Mon, 09/07/2009 - 21:01

I have configured the APs with the primary and secondary WLCs.

My doubt is but Why the APS lost the communication whit the WLCA ... and I never lost the conectivity to WLCA (ping to Managment WLC) ...

ricardorojas123 Tue, 09/08/2009 - 10:04

This is a example of a LAP:

Cisco AP Identifier.............................. 5

Cisco AP Name.................................... AP0025.4847.c318

Country code..................................... US

Regulatory Domain allowed by Country............. 802.11bg:-AR 802.11a:-

AP Country code.................................. US

Switch Port Number .............................. 1

MAC Address...................................... 00:21:d8:47:c3:18

IP Address Configuration......................... Static IP assigned

IP Address....................................... 10.150.179.49

IP NetMask....................................... 255.255.255.0

Gateway IP Addr.................................. 10.150.179.1

Domain...........................................

Name Server......................................

Primary Cisco Switch Name........................ WLCA

Primary Cisco Switch IP Address.................. 10.15.15.26

Secondary Cisco Switch Name...................... WLCB

Secondary Cisco Switch IP Address................ 10.15.17.26

Leo Laohoo Tue, 09/08/2009 - 14:10

Maybe WLCA has reached it's number of APs it is capable of supporting. How many APs can WLCA support and how many has currently joined to it?

ricardorojas123 Tue, 09/08/2009 - 14:50

The WLCA support 100 access points, and a total of 10 LAP are deployments.

The great doubt is:

Why the Access points randomly is registered in the controller B, if the connectivity to the controller A is never lost? and the access point go back to the WLCA in 10 - 15 seconds?

I attach a image.

THANKsss

Attachment: 

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