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A Device Fails to Be Logged In Through the Console Port

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Fault Description

Login through the console port fails.

Possible Causes

  • Parameters of the serial port are incorrectly configured.
  • The connected port is incorrectly configured.
  • Physical attributes of the serial port on the PC are different from attributes of the console port on the device.
  • Cables are not firmly connected on the serial interface.

Troubleshooting Procedure

  1. Check whether the serial port parameters are correctly configured. (The third-party software SecureCRT is used as an example here.)

    Check whether a correct serial port is connected. Some PCs provide multiple serial ports with corresponding numbers. When connecting a serial port, ensure that the correct serial port number is selected.

    Check that the serial port settings on the PC are the same as the console port settings on the device, as shown in Figure 1. The default console port settings are as follows:
    • Baud rate: 9600
    • Data bits: 8
    • Stop bits: 1
    • Parity: None
    • Flow control: None
    Figure 1 Setting the connected port and communication parametersA Device Fails to Be Logged In Through the Console Port-2660723-1
  2. Check whether the serial cable is securely connected. If necessary, replace the current cable with a properly-functioning one.

  3. If the fault persists, collect error information and contact technical support personnel. 

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