The following excerpt shows the LDAP section of the pkiserv.conf configuration file as it is shipped:

[LDAP]
NumServers=1
PostInterval=5m
Server1=myldapserver.mycompany.com:389
AuthName1=CN=root
AuthPwd1=root
CreateOUValue= Created by PKI Services
RetryMissingSuffix=T
# Name of the LDAPBIND Class profile containing the bind information for LDAP
# server 1. This key is optional. Used in place of keys Server1, AuthName1.
# and AuthPwd1
#BindProfile1=LOCALPKI.BINDINFO.LDAP1

You use the LDAP section of the pkiserv.conf file to provide information for one or more LDAP servers. The NumServers line specifies the number of servers.