I have created the user in Juniper devices by below commands
root@qfx5100# set system login user RO class super-user
Now the user RO has been created and I have not given any password to it. But when I try to login with RO it asks me for password and when I leave it blank and hit on enter it gives me access denied.
What password should I enter in that case so that I can get access to it.