Customer has been configured the auth-mode to None in AAA system. But it need to check the username. Customer didn’t want to check the username and password in LNS side.
The server can get the username from domain, and the auth-mode for AAA was by domain. So if we configure the auth-mode to None in AAA, the server has to check the username.
If we don’t want to check to username and password in LNS side, we can just undo the configuration of ppp authentication-mode in Virtual-Template interface.