学员提问：
思科1841路由器还原成出厂设置，进去后出现提示：
Cisco Router and Security Device Manager (SDM) is installed on this device.
This feature requires the one-time use of the username "cisco"
with the password "cisco". The default username and password have a privilege le
vel of 15.
Please change these publicly known initial credentials using SDM or the IOS CLI.
Here are the Cisco IOS commands.
username <myuser> privilege 15 secret 0 <mypassword>
no username cisco
用帐号cisco,密码cisco进入
然后用config t
再用:enab password 123456
重启路由器后，再用cisco和密码123456进不去了，
用cisco密码cisco也进不去了，这个是什么问题？
捷盈讲师及学员解答：
你没有保存原来的配置。重新改。