We want to use DHCP dicovery method. So we enabled option 43. But when we connected ap, it is unable to reach the controller. For testing purpose, i connected my laptop & i am able to ping both controller & gateway.
Due to this we manually entered the setenv variables & later i could see the ap in controller. It was in Upgrading state.
show ap database command shown IL flags which represents Inactive & Unlicensed state. This is the new deployment where i just installed 256 ap count licenses. I m surprised to see this as this is the first ap i mount after survey.