AIR-LAP1131AG won't complete connectivity

[ses0]

Hi

We have 3 new AIR-LAP1131AG access points connecting to 4400 controller with software version 4.2.205.0. The access points connect to the controller and start downloading their software. After a few minutes the access points reboots and starts over. Below is information from the trap logs.

Fri Jun 12 10:48:46 2009 AP Associated. Base Radio MAC: 00:14:1b:b7:90:e0

1 Fri Jun 12 10:48:21 2009 AP Disassociated. Base Radio MAC:00:14:1b:b7:90:e0

2 Fri Jun 12 10:48:21 2009 AP's Interface:1(802.11a) Operation State Down: Base Radio MAC:00:14:1b:b7:90:e0 Cause=Heartbeat Timeout

3 Fri Jun 12 10:48:21 2009 AP's Interface:0(802.11b) Operation State Down: Base Radio MAC:00:14:1b:b7:90:e0 Cause=Heartbeat Timeout

Does anyone have an idea what could be causing this problem.

[misha_bac]

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

[Leo Laohoo]

Troubleshoot a Lightweight Access Point Not Joining a Wireless LAN Controller

http://www.cisco.com/en/US/products/ps6366/products_tech_note09186a00808f8599.shtml

Using show ap join stats command to troubleshoot an AP not joining a Wireless LAN Controller

http://www.cisco.com/en/US/tech/tk722/tk809/technologies_tech_note09186a0080962aac.shtml

[cchitwood1]

We recently ran into this. If you are using LAG on your WLC; make sure you have a port channel configured on your connecting switch. An easy way to see what is going on is to telnet into the WLC and enable debug "debug lwapp events enable" With this we saw an error message "packet 3 received, packet 4 expected"