Got the solution
Was wrongly introducing the ccd file path in server conf file
howto Server and Client lan addition is not clear but found the pdf from this forum which helped me!
http://secure-computing.net/files/openvpn_bsdcan_2012.pdf
client-config-dir /etc/openvpn/ccd <this line should be added in Howto part for beginners>
Anyways thanks forum team!!!!
Post closed!