AIR LAP 1142 wont join to WISM 5.2.193.0

Question

I Have a problem when make a replacement of  AP 1142 with the new one on existing WLC deployment.
The AP already get IP Address, Option43 and 60 already set.
ip dhcp pool AP
   network 10.1.254.0 255.255.255.0
   option 43 hex f104.0a01.fb0b
   default-router 10.1.254.1
   option 60 ascii "Cisco AP c1140"
AP already download the image from WLC, but after AP restarting, it change to discovery state again. Here's the log
*Aug 12 05:56:35.889: %CAPWAP-3-ERRORLOG: Go join a capwap controller
*Aug 12 05:56:35.000: %CAPWAP-5-DTLSREQSEND: DTLS connection request sent peer_ip: 10.1.251.10 peer_port: 5246
*Aug 12 05:56:35.066: DTLS_CLIENT_ERROR: ../dtls/dtls_handshake.c:91 First fragment for seq 2 is missing
*Aug 12 05:56:35.066: DTLS_CLIENT_ERROR: ../dtls/dtls_handshake.c:91 First fragment for seq 2 is missing
*Aug 12 05:56:35.066: DTLS_CLIENT_ERROR: ../dtls/dtls_handshake.c:91 First fragment for seq 2 is missing
*Aug 12 05:56:35.746: %CAPWAP-5-DTLSREQSUCC: DTLS connection created sucessfully peer_ip: 10.1.251.10 peer_port: 5246
*Aug 12 05:56:35.747: %CAPWAP-5-SENDJOIN: sending Join Request to 10.1.251.10
*Aug 12 05:56:35.747: %CAPWAP-5-CHANGED: CAPWAP changed state to JOIN
*Aug 12 05:56:35.839: %CAPWAP-5-CHANGED: CAPWAP changed state to CFG
*Aug 12 05:56:35.845: %DTLS-5-ALERT: Received WARNING : Close notify alert from 10.1.251.10
*Aug 12 05:56:35.845: %DTLS-5-PEER_DISCONNECT: Peer 10.1.251.10 has closed connection.
*Aug 12 05:56:35.845: %DTLS-5-SEND_ALERT: Send WARNING : Close notify Alert to 10.1.251.10
*Aug 12 05:56:35.885: %CAPWAP-5-CHANGED: CAPWAP changed state to DISCOVERY
*Aug 12 05:56:35.885: %CAPWAP-5-CHANGED: CAPWAP changed state to DISCOVERY
*Aug 12 05:56:35.892:  Power level 0 adjusted on slot 0 for chan 11
The log keep repeated itself.
Clock on AP wont synchronized to WLC too, everytime I set a clock on AP, it will back again 2 hours from WLC clock. The funny thing si the other old AP can join to WLC with no problem
Anyone have any idea about this one?
Many Thanks,
Andrew

Answer 1

AP already download the image from WLC,
Your AP currently have two IOS:  One called the "recovery" and the other is the LWAPP/CAPWAP.  The recovery is easily identifiable because it has the letters "rcv" in the filename.  In enable mode, delete the LWAPP/CAPWAP and reload the AP.  Make sure the AP is not connected to the network.
Once the AP boots the "rcv" image, perform the following commands:
1.  clear lwapp private
2.  clear lwapp ap controller ip address
Reboot the AP and let it join the network.