清空交换机配置（恢复出厂默认值）分为两种情况
（一）能记住设备设置的密码，操作的时候仔细确认交换机提示的人机对话输入Y还是N
<Huawei>reset saved-configuration
Warning: The action will delete the saved configuration in the device.
The configuration will be erased to reconfigure. Continue? [Y/N]:y 

<Huawei>reboot
Info: The system is now comparing the configuration, please wait.
Warning: All the configuration will be saved to the configuration file for the ne
xt startup:flash:/vrpcfg.zip, Continue?[Y/N]:n                      （注意：这儿是N）

System will reboot! Continue?[Y/N]:y
          
设备重启以后，即恢复默认出厂值，串口登陆的时候会提示设置密码，按照正常配置即可。