Topology
1. Authentication method 1: password (unsafe, enter the password)
<SW1>sys
[SW1]un in en
[SW1]sys SW1
# 进入用户控制台接口
[SW1]user-interface console 0
# 选择认证模式为密码方式
[SW1-ui-console0]authentication-mode password
# 设置密码
[SW1-ui-console0]set authentication password cipher 123456
[SW1-ui-console0]quit
PC1 reconnects and asks for password
2. Authentication method 2: AAA (recommended, user name and password are required)
<SW1>sys
[SW1]un in en
[SW1]sys SW1
# 进入用户控制台接口
[SW1]user-interface console 0
# 认证模式为 aaa 方式
[SW1-ui-console0]authentication-mode aaa
[SW1-ui-console0]quit
# 进入 aaa 视图
[SW1]aaa
# 创建用户和密码
[SW1-aaa]local-user admin password cipher 123456
# 服务类型改为 terminal
[SW1-aaa]local-user admin service-type terminal
[SW1-aaa]quit
PC1 login, require user name to be entered first
