CCNA实验：配置VTY接口使用本地用户名与密码进行登陆

第一步：配置用户名密码
R2(config)#username admin privilege 15 password admin
R2(config)#username cisco autocommand show ip int b
R2(config)#username cisco password cisco
R2(config)#line vty 0 4
R2(config-line)# login local

第二步：验证admin用户
R1#telnet 12.0.0.2
Trying 12.0.0.2 ... Open

User Access Verification

Username: admin
Password:
R2#
（已经成功远程登陆到R2）
第三步：验证cisco用户，上面配置此用户只能查看show ip int b命令

R1#telnet 12.0.0.2
Trying 12.0.0.2 ... Open

User Access Verification

Username: cisco
Password:
（输入密码后直接运行命令）
Interface IP-Address OK? Method Status Protocol
FastEthernet0/0 12.0.0.2 YES manual up up
FastEthernet0/1 unassigned YES unset administratively down down
[Connection to 12.0.0.2 closed by foreign host]