Why cannot an unconfigured CE series switch be logged in after it starts and why are DHCP discovery errors displayed on the console port

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CE series switches support Zero Touch Provisioning (ZTP) since V100R003C00. After being powered on, an unconfigured device will repeatedly execute the ZTP process to complete automatic deployment until automatic deployment succeeds or administrators press CTRL+C to stop it.

Other related questions:
Why cannot logs of CE series switches be exported to the console
Logs cannot be exported to the console if the log or console display is disabled. To export logs to the console, enable the log and console display.
<HUAWEI> terminal logging
<HUAWEI> terminal monitor

Why cannot ZTP execution information be displayed through the console port of a CE12800 switch
On a CE12800 switch with two MPUs, you can only log in and check ZTP execution information through the console port of the active MPU. If you log in through the console port of the standby MPU, ZTP execution information cannot be queried and the system displays only the following information: Info: The system is busy with ZTP on master console, please wait or abort ZTP throught master console. Therefore, to view ZTP execution information, log in through the console port of the active MPU.

Method for handling errors that occur on VMs during VNC login
VNC provides a quick maintenance method for VMs. When an error occurs, you can either handle it yourself or seek help. When you enter the VNC window, you may see a black screen or one or more error messages. However, these do not prevent you from using the VM. You only need to type Ctrl+Alt+Del to log in to the VM and use it.

Why no information is displayed on the console interface of an AR
The possible causes are as follows: - Parameter settings on the console interface are incorrect. - The console cable is faulty. - The path of startup files is incorrectly specified. - The storage device (SD card or USB flash drive) saving the startup files has been removed from the AR or is not securely connected to the AR. - The memory card is loosely connected.

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