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要求R2能遠端登陸上R1（使用password）方式
第一種方式：
[R1]
[R1]int e0/0/0
[R1-Ethernet0/0/0]ip address 12.1.1.1 24
[R1]user-interface vty 0 4
[R1-ui-vty0-4]authentication-mode password
[R1-ui-vty0-4]set authentication password cipher 123456
[R2]int e0/0/0
[R2-Ethernet0/0/0]ip address 12.1.1.2 24
[R2-Ethernet0/0/0]q
[R2]q
<R2>telnet 12.1.1.1
第二種方式：使用aaa認證
[R1]interface e0/0/0
[R1-Ethernet0/0/0]q
[R1-ui-vty0-4]authentication-mode aaa
[R1-ui-vty0-4]q
[R1]aaa
[R1-aaa]local-user huawei password cipher 123456
[R1-aaa]local-user huawei privilege level 3
[R1-aaa]local-user huawei service-type telnet
[R2]
本文轉自 towardly 51CTO部落格，原文連結:http://blog.51cto.com/brighttime/1953877