Help connecting to remote ldap server

I successfully configured freeradius (version 1.x Ubuntu) to use ldap on a localhost via WPA. I am trying to setup version 2.1 (Ubuntu) to use a remote ldap server now. The module loads fine and I made what I believed were the correct changes to connect to the remote server, but I have missed something. Is there a good doc for ldap authentication on a remote host? Raymond