Authentication error after configuring LDAP integration with openstack

Hi all, Before ldap integration openstack working properly but if i set "driver = ldap" in keystone.conf under [identity] section nothing is working for me,I am not able run any openstack command and also not able to create any project or domain or user.If remove "driver = ldap" entry everything working back normally please help me on this issue. If i run admin-openrc file I am getting below error; root@controller:~/client-scripts# openstack image list The request you have made requires authentication. (HTTP 401) (Request-ID: req-bdcde4be-5b62-4454-9084-19324603d0ce) Please help me .Where I am making mistakes? Thanks & Regards Midhunlal N B +918921245637