Once after your installation is completed, you will not be able to login directly to the console as the user "root".
user root should be assigned role as a normal user.
Below are the very few steps to enable root login.
1. #vim /etc/ssh/sshd_config [ change parameter to yes ]
2. #vim /etc/default/login [ Comment the below line ]
3. Remove ";type=role" from the root entry in /etc/user_attr
use the below command
#rolemod -K type=normal root
4. Restart service
#svcadm restart svc:/network/ssh:default