HP-UX Directory Server 8.1 administrator guide
5. In the Enter a new Smart Referral field, enter a referral in the LDAP URL format, then
click Add. The LDAP URL must be in the following format:
ldap://hostname:portnumber/[optional_dn]
optional_dn is the explicit DN for the server to return to the requesting client application.
2.5 Using referrals 93