[SW1]interface Vlanif 1
[SW1-Vlanif1]ip address 192.168.56.254 24
2、在SW1开启Telnet服务

[SW1]telnet server enable
Info: The Telnet server has been enabled.
3、SW1上创建telnet用户“telnetuser”，密码“huawei123”用于Telnet身份验证

[SW1-aaa]local-user telnetuser password cipher huawei123
Info: Add a new user.
[SW1-aaa]local-user telnetuser service-type telnet
[SW1-aaa]local-user telnetuser privilege level 3
4、在VTY终端视图下应用。

[SW1]user-interface vty 0 4
[SW1-ui-vty0-4]authentication-mode aaa