If you want the same LDAP authentication behavior for database users who log on through Unity and those who log on directly to a database system connected to Unity, you must duplicate <LdapConfig> changes on each Unity server and on all connected databases.
For information about Unity, see Teradata® Unity™ Installation, Configuration, and Upgrade Guide for Customers, B035-2523 and Teradata® Unity™ User Guide, B035-2520.