Dear Sir or Madam, i have some questions about OpenLDAP 2.4.23 or 2.4.26. Does it have a XDAS interface or implementation possibility of another company?

No XDAS support; OpenLDAP has an internal form of auditing implemented in slapo-accesslog(5), which creates a service database that contains detailed logs of every access to the database, according to draft-chu-ldap-logschema. I see two possible approaches for standardizing auditing according to Open Group standard: - develop a standoff tool that reads the accesslog database (e.g. via plain LDAP) and reformats it according to XDAS, e.g. using OpenXDAS' library - develop an overlay similar in functionality to slapo-accesslog(5) that writes audit logs to xdasd. Feel free to issue a request for enhancement via the ITS http://www.openldap.org/its/

Can it use SNMP for monitoring/administration?

No, it uses LDAP itself for administration, via the cn=config interface.

A question of the architecture of OpenLDAP: Provide it Read-Only/Multi-Read/Write/Multi-Server System? Where can i find Requirments for the system, on which OpenLDAP should installed? My last question is about replication, which replicationforms cann be used, partitioning?

Replication is detailed in the admin guide http://www.openldap.org/doc/admin24/.

p.