I had a similar issue with this bug when running that code on a Flex 7510. Please check this https://quickview.cloudapps.cisco.com/quickview/bug/CSCuo35247

Is the AP registering with the controller at all? - Can you ping the controller IP when sourcing the ping from the gateway (L3 / SVI interface) of the AP - Check local router/firewall to see if packet destined for the controller is even being sent - ...

Hi Raul,I have seen similar issues on Cisco 6500 series chassis'. I have had to replace the chassis itself and from the symptoms you are describing it seems you are also experiencing the same problem.Fabric channel errors occur when there is a issue ...