I have installed openldap-servers package in server machine
i have edited vi /etc/openldap/ldap.conf
i have added following line
BASE dc=abcd,dc=com
URI ldap://ldap.abcd.com ldap://ldap-master.abcd.com:666
i have restarted the ldap service
then client pc i have installed openldap-clients package
i have edited vi /etc/openldap.ldap.conf
i have added the following line below the word TLS_CACERTDIR /etc/openldap/certs
URI ldap://ldap.abcd.com
BASE dc=abcd,dc=com
then i have edited /etc/nsswitch.conf
i have added the following line
passwd: files ldap
shadow: files ldap
group: files ldap
after saved i did logout
i coule not able to login with ldap server user name in client pc