matchingrule是可以用OID来定位的.
matchingrule is usually given by an object identifier (OID), although if a descriptive name has been assigned to the matching rule, that may be used as well. The OIDs of the matching rules supported by your directory server will be given in its documentation.
详见:
Understanding and Deploying LDAP Directory Services, Second Edition
2.2:The LDAP Models