Access points failing the IdentiFi Controller discovery process
Access points are not able to locate an IdentiFi Controller via DNS lookup (controller.<domain name>)
Access points are not using option 78 provided by the DHCP offer
All ExtremeWireless appliance Firmware
Access Point Boot Up Process
DHCP server not replying to DHCP informs
Use a DHCP server that will reply to DHCP informs. The access point will not use the options supplied in the DHCP offer which is provided by the DHCP server. The ap will send periodic DHCP informs looking for the DHCP server to ACK the inform and provide the necessary options (78, 43, DNS server, etc...)
The Access Point (AP) does not use the DNS information from the initial DHCP offer supplied from the DHCP server. After the IP setup stage, the AP decides whether to use the static controller IP or start it's discovery methods. If SLP/DNS/VCI discovery is started, the AP sends periodic DHCP informs to get more data in order to complete it's boot discovery methods. If the DHCP server does not reply to the inform, the process to contact the controller will fail and start over.