配置文件：
SW1 配置文件
#
interface Vlanif1
ip address 192.168.1.10 255.255.255.0
[sw1]user-interface vty 0 4
[sw1-ui-vty0-4]authentication-mode password
[sw1-ui-vty0-4]set authentication password simple huawei
[sw1-ui-vty0-4]user privilege level 3
SW2 配置文件
#
interface Vlanif1
ip address 192.168.1.20 255.255.255.0
<sw2>telnet 192.168.1.10