title: What do people use for CN with inetOrgPerson in LDAP directories
body: <p>I've been using <code>givenName+" "+surname</code> for the CN field and I woke up screaming last night 'what about John Smith'? I can imagine any large organization employing multiple people with the same name. So of course this isn't going to work. What do people use instead?</p>
  
  <p><strong>EDIT</strong> Note: in <code>inetOrgPerson</code> the CN is part of the DN.</p>
  
  <p><strong>EDIT</strong> Note: in this situation I am expecting to grow to hundreds of thousands of user entries.</p>