IPods, iPads, iPhones having issues to connect to WLAN???

Question

Hi,
I am using a 4402-50 WLC, AP1131 and software version 7.0.98.210.
The problem I am having is that this devices have to do many retries to connect to the WLAN but the rest of laptops and mobiles do not. I wonder if it has to do with the CCX since I had experienced that before but in stand alone mode. This problem has been experienced since a month ago and there had not been changes made in the WLC configuration.
The logs the WLC is giving are:
Note: I looked for this message at the web and it said it was a message generated by version bug.
*apfMsConnTask_0: Aug 05 11:39:53.990: %APF-1-DISCONECT_MOBILE_DUE_TO_WLAN_SW: apf_policy.c:569 Disconnecting mobile 40:5f:be:1a:6e:78 due to switch of WLANs from 1(femsawl) to 2(visitas)
*apfMsConnTask_0: Aug 05 11:38:37.647: %APF-1-DISCONECT_MOBILE_DUE_TO_WLAN_SW: apf_policy.c:569 Disconnecting mobile 2c:a8:35:af:c4:d8 due to switch of WLANs from 1(femsawl) to 2(visitas)
*apfMsConnTask_0: Aug 05 11:35:38.749: %APF-1-DISCONECT_MOBILE_DUE_TO_WLAN_SW: apf_policy.c:569 Disconnecting mobile a8:6a:6f:dc:21:52 due to switch of WLANs from 1(femsawl) to 2(visitas)
*apfMsConnTask_0: Aug 05 11:33:23.319: %APF-1-DISCONECT_MOBILE_DUE_TO_WLAN_SW: apf_policy.c:569 Disconnecting mobile 3c:74:37:08:6c:63 due to switch of WLANs from 1(femsawl) to 2(visitas)
*apfMsConnTask_0: Aug 05 11:32:33.216: %APF-1-DISCONECT_MOBILE_DUE_TO_WLAN_SW: apf_policy.c:569 Disconnecting mobile 3c:74:37:08:6c:63 due to switch of WLANs from 2(visitas) to 1(femsawl)
*apfMsConnTask_0: Aug 05 11:32:27.910: %APF-1-DISCONECT_MOBILE_DUE_TO_WLAN_SW: apf_policy.c:569 Disconnecting mobile 2c:a8:35:af:c4:d8 due to switch of WLANs from 1(femsawl) to 2(visitas)
*apfMsConnTask_0: Aug 05 11:32:13.310: %APF-1-DISCONECT_MOBILE_DUE_TO_WLAN_SW: apf_policy.c:569 Disconnecting mobile 04:18:0f:b4:80:a4 due to switch of WLANs from 1(femsawl) to 2(visitas)

Answer 1

I do not think this is related BUT it is what we are experiencing in our wireless network when we went from just 2.4 to 2.4 & 5 ghz with the same ssid's.
Apple devices when given the choice between 5 & 2.4 were getting (50% of the time) confused I believe because when we allowed the ssid only on the 2.4 the apples could connect.
Another issue we have run into which works flawlessly with NON Apple devices (smartphones and pc's) is the locally attached router handing out the dhcp.
When we try to connect the Apple devices they never receive or accept the dhcp assignment from the router.
The router shows the correct mac addy given an address AND debug shows the router sent the dhcp reply.
Since the switch is passing the information properly to NON Apple devices we know it has to be an Apple issue.
Taking the dhcp functions off the router and putting it on a windows 2003/2008 server resolves the issue...
Go figure.
We are running wlc 5508 & 3502i Ap's in HREAP mode. (7x code)
For us, Apple devices have made wireless support more challenging.
Oh and I also read some documents online from Princeton University about Apples not following industry standard with regards to dhcp release/renewal.