We are using openldap version 2.0.27 on RHEL AS 3 with Postfix 2.2.10

In postfix logs, I have seen the following warning message:

warning: dict_ldap_connect: Unable to bind to server ldap:// as <dn>: 85 (Timed out)

The default timeout is set as 10 seconds.

How do I monitor my ldap server.   I would like to know the active connection counts on my ldap server.