Restoring the Password for Telnet Login

If you forget or want to change the Telnet login password, log in to the switch through the console port and set a new password for Telnet login.

The following uses the command lines of the S7700 in V200R008C00 as an example.

# Logging in to the device through the console port.

Connect the DB9 female connector of the console cable to the serial port (COM) on the PC, and connect the RJ45 connector to the console port on the device.
Start the terminal emulation software on the PC. Create a connection, select the connected port, and set communication parameters.
- Baud rate: 9600
- Data bits: 8
- Stop bits: 1
- Parity: None
- Flow control: None
Click Connect. Enter or configure the login password as prompted to log in to the switch.

# Take password authentication for VTY0 login as an example. Set the password to Huawei@123.

<HUAWEI> system-view
[HUAWEI] user-interface vty 0
[HUAWEI-ui-vty0] protocol inbound telnet   //By default, switches in V200R006 and earlier versions support Telnet, and switches in V200R007 and later versions support SSH.
[HUAWEI-ui-vty0] authentication-mode password
[HUAWEI-ui-vty0] set authentication password cipher Huawei@123
[HUAWEI-ui-vty0] user privilege level 15
[HUAWEI-ui-vty0] return
<HUAWEI> save

# Take AAA authentication for VTY0 login as an example. Set the user name and password to admin123 and Huawei@123 respectively.

<HUAWEI> system-view
[HUAWEI] user-interface vty 0
[HUAWEI-ui-vty0] protocol inbound telnet   //By default, switches in V200R006 and earlier versions support Telnet, and switches in V200R007 and later versions support SSH.
[HUAWEI-ui-vty0] authentication-mode aaa
[HUAWEI-ui-vty0] quit
[HUAWEI] aaa
[HUAWEI-aaa] local-user admin123 password irreversible-cipher Huawei@123
[HUAWEI-aaa] local-user admin123 service-type telnet
[HUAWEI-aaa] local-user admin123 privilege level 15
Warning: This operation may affect online users, are you sure to change the user privilege level ?[Y/N]y
[HUAWEI-aaa] return
<HUAWEI> save