交换机启动故障 或者忘记密码    重启交换机    出现下列提示后 Ctrl+B  进入维修模式

华为的系统是.cc的文件需要到华为官方下载  

Press Ctrl+B or Ctrl+E to enter BootLoad menu: 1

Password:

The password is wrong.
Password:

The password is wrong.
Password:

        BootLoad Menu

     1. Boot with default mode    正常启动
     2. Enter startup submenu
     3. Enter ethernet submenu    设置ftp/
     4. Enter filesystem submenu
     5. Enter password submenu
     6. Clear password for console user
     7. Reboot
    (Press Ctrl+E to enter diag menu)

Enter your choice(1-7):

选择3
Enter your choice(1-7): 3

        ETHERNET  SUBMENU

     1. Download file to Flash through ethernet interface   设置好ftp服务后选择进行更新
     2. Modify ethernet interface boot parameter       选项设置ftp服务器地址
     3. Return to main menu

Enter your choice(1-3): 2

        BOOTLINE  SUBMENU

     1. Set TFTP protocol parameters
     2. Set FTP protocol parameters      设置ftp
     3. Set SFTP protocol parameters
     4. Return to ethernet menu

Enter your choice(1-4): 2

Warning: FTP is not a secure protocol. SFTP is recommended.

'.' = clear field;  '-' = go to previous field;  'Ctrl+D' = quit

Load File name      : s5730_dft.cc     将下载的文件名更改成这个名字
Switch IP address   : 192.168.0.112     交换机的ip地址 这个地址在ETH口
Server IP address   : 192.168.10.100    这是提供ftp服务器的地址
FTP User Name       : admin              用户名
FTP User Password   :                       密码是隐藏看不见的

Starting to write BOOTLINE into flash ... done   提示配置完成

Enter your choice(1-4): 4    返回上一级页面

        ETHERNET  SUBMENU

     1. Download file to Flash through ethernet interface
     2. Modify ethernet interface boot parameter
     3. Return to main menu

Enter your choice(1-3): 1   选择1 进行系统更新

Do you want to overwrite the file : s5730_dft.cc?    
Yes or No(Y/N): y
Use ftp to download file : s5730_dft.cc , please wait for a moment.   等待完成 即可

完成后断电重启交换机