Wireless Access

i have 3200 controller with dchp running on the controller. From time to time, i see ipad or win 7 has issue obtaining ip address from the controller while they connected to the ssid successfully with the logon role. 

Users
-----
IP MAC Name Role Age(d:h:m) Auth VPN link AP name Roaming Essid/Bssid/Phy Profile
---------- ------------ ------ ---- ---------- ---- -------- ------- ------- --------------- -------
169.254.145.168 04:54:53:43:5d:e8 logon 00:00:04 AP-Pilot2ndFl-Hallway232 Wireless -Guest/d8:c7:c8:db:07:d1/a guests
169.254.49.163 04:54:53:43:5d:e8 logon 00:00:00 AP-Pilot2ndFl-Hallway232 Wireless -Guest/d8:c7:c8:db:07:d1/a guests
169.254.109.116 b8:ff:61:17:8f:5c logon 00:00:06 N/A Wireless -Guest/d8:c7:c8:db:06:f1/a guests
169.254.88.225 00:c6:10:29:6f:72 logon 00:00:06 N/A Wireless -Guest/d8:c7:c8:db:d2:a1/g guests
169.254.72.177 40:a6:d9:ea:ec:ab logon 00:00:03 AP-Pilot2ndFl-Rm211 Wireless -Guest/d8:c7:c8:d9:db:01/g guests
169.254.92.160 dc:2b:61:b0:4d:01 logon 00:00:01 AP-Pilot2ndFl-Hallway232 Wireless -Guest/d8:c7:c8:db:07:c1/g guests
169.254.100.13 04:54:53:43:5d:e8 logon 00:00:02 AP-Pilot2ndFl-Hallway232 Wireless -Guest/d8:c7:c8:db:07:d1/a guests

May be i am not familiar with ipad and win 7. The network settings are looking normal. this is pretty annoying issue. 

Does anybody experience this issue? or may be tips for further troubleshooting. 

We were experiencing the same issue. 

Ended up being that the switch was not passing the vlan information correctly.

Check under your SSID Profile on the controller under 

  Wireless > Configuration > AP Group

If your using vlan's you need to make sure that the SSID is passing traffic over the correct vlan.

skywalker, 

Have you tried using an external DHCP server? 

Can you post the following output taken during the issue please?

show user ip x.x.x.x (where x is the client IP).

What VLAN is the user supposed to be on?