Customer locked the root account on a IAD 104H and could not log in anymore.
For this kind of situations password could not be recovered, solution was provided to the customer.
Customer forgot or locked the password for username Root in the IAD.
In this situation the following procedure should be performed:
1. Log in to the IAD using telnet, using username system and password login
2. Type and run command restore vendor-config in the global configuration mode
3. Restart the IAD for settings to take effect.
4. After the restart, password for user root should be huawei123(For firmware version V300R001, the password is admin) and the IP address will change as well to 192.168.100.1