7 Apr
2011
7 Apr
'11
8:38 a.m.
Looking at the output, things become clearer. The "conversation" ends when the server tries to send the first Access-Challenge packet to the client. It seems like that packet never gets there - and so the client retransmits the same Request over and over again. The server then repeatedly tries to re-send its reply, but again, it never seems to get there.
Make sure that the changed IP address doesn't lead to some firewall (host FW? net FW? Cisco Controller's ACLs?) eats the responses. I checked with wireshark, requests were send, but no response. This was the point. An ACL blocked traffic back to the wlc.
Thanks al lot for your help :-) Greetings, Juergen