We tried to connect via console to LWAP directly, but it does not let us write a configuration. the AP does not accept any configuration. can I connect to the AP's console via the controller and set the IP from there?
the ap is not autonomous it is lightweight... unless to convert it to IOS. If you were able to enter the commands mentioned in previous post, then the ap is an LWAP. if not, and you can issues a wr mem, then you will need to convert that ap the Lightweight.
If you enter the clear lwapp private-config command, you might see this error message:
AP0017.5922.f384#clear lwapp private-config
ERROR!!! Command is disabled.
This error message indicates that the static configuration commands are locked out because either:
This command was entered while the LAP is registered to a controller.
***The LAP was previously registered to a WLC, but the username/password was not changed from the default
So try this;
Once your LAP successfully registers with the WLC, the static LWAPP configuration commands (discussed in the previous section) are locked out and are no longer accessible. In order to re-enable the commands, you must have set the username and password while the LAP was joined to the previous controller.
When the LAP is registered to a controller, use this controller CLI command to set the AP's username and password:
config ap username password
From this excellent doc :)
Resetting the LWAPP Configuration on a Lightweight AP (LAP)