修改S5700交换机密码时遇到的问题

今天想改一下S5700的密码，使用Console口登陆，改完密码后，保存，以为这样就完事了。但重新登陆之后，密码还是没有改变，还得用旧密码登陆。最后发现，原来Console 0口之前不是用aaa认证模式的

[S5700-ui-console0]dis this
#
user-interface con 0
 authentication-mode password

解决方法：将Console 0口认证模式改成aaa

[S5700-ui-console0]authentication-mode aaa
Info: The password of CON0 will be changed. Please verify the old password.
Please enter old password: 
Warning: The level of the user-interface(s) will be the default level of AAA users, please check whether it is correct.
Info: The password was cleared.
Info: Succeeded in changing the authentication mode.