I am installing a 3750 switch with integrated controller and 12 x Cisco 1140 AP's. I have configured the 3750 WLC with a management and AP Manager IP address along with 3 WLAN profiles and security settings. I am confident that these are correct, and in any case are, I believe, not related to the problem I have.
None of my AP's would connect to the controller and when I checked the DHCP (Windows Server) server they had not been issued with an IP address. I logged into an AP via the console and saw the following message "Not sending discovery request AP does not have an ip" If I plug a laptop into the port the AP connects to I pick up an IP address without a problem from the DHCP server. This is not a faulty AP issue as none of the AP's are getting an IP address.
The only other relevant fact is that the Windows DHCP server is on a different subnet (VLAN)though I have enabled DHCP forwarding which obviously works as my laptop gets an IP address.
I have raised this with Cisco TAC and their first response has been to get me to configure Option 43. I will try this but am not expecting it to work as the only thing this will do is to return the IP address of the controller. My AP's however are not getting any response.
Any suggestions as to how to resolve would be gratefully received.