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Knowledge Base

The Console Port Password of the S2700 of an Earlier Version Is Forgotten

Publication Date:  2019-05-20  |   Views:  527  |   Downloads:  0  |   Document ID:  EKB1100015802

Contents

Issue Description

The console port password of the S2700 of an earlier version is forgotten.

Handling Process

To restore the password of a Huawei switch, perform the following steps. (In the following operations, the password is required for entering the BootROM. Try the following default passwords: huawei, Admin@huawei.com www.huawei.com, and Admin@123.)

 

 

Restart the switch. During the startup, press Ctrl+B to display the BootROM interface. Rename the default startup configuration file. For example, the new file name is vrptest.zip.

 

BIOS LOADING ...

Copyright (c) 2008-2010 HUAWEI TECH CO., LTD.

(Ver127, Jan 18 2011, 22:45:47)

 

Press Ctrl+B to enter BOOTROM menu... 1

password:                      

          BOOTROM  MENU

 

    1. Boot with default mode

    2. Enter serial submenu

    3. Enter startup submenu

    4. Enter ethernet submenu

    5. Enter filesystem submenu

    6. Modify BOOTROM password

    7. Reboot

Enter your choice(1-7): 5

 

         FILESYSTEM SUBMENU

 

    1. Erase Flash            

    2. Format flash           

    3. Delete file from Flash 

    4. Rename file from Flash 

    5. Display Flash files    

    6. Update EPLD file       

    7. Return to main menu    

 

Enter your choice(1-7): 4 // Modify the name of the original configuration file and restart the system after the modification.

No. File Size(bytes)     Created Date       File Name

=================================================================

1:  1752     bytes   Oct 01 2008 00:01:59   private-data.txt                    

2:  836      bytes   Oct 01 2008 00:02:35   rr.dat                              

3:  836      bytes   Oct 01 2008 00:02:40   rr.bak                              

4:  1115     bytes   Oct 01 2008 00:06:14   vrpcfg.zip                          

5:  10215068 bytes   Jan 01 1970 00:03:10   S5300SI-V100R005C01SPC100.cc        

 

BE CAREFUL!

This may cause your system fail to start!

Please choose the file you want to rename:  vrpcfg.zip

 

Please Input the new filename:  vrptest.zip

 

Rename file .....done

 

         FILESYSTEM SUBMENU

 

    1. Erase Flash            

    2. Format flash           

    3. Delete file from Flash 

    4. Rename file from Flash 

    5. Display Flash files    

    6. Update EPLD file       

    7. Return to main menu    

 

Enter your choice(1-7): 7

 

          BOOTROM  MENU

 

    1. Boot with default mode

    2. Enter serial submenu

    3. Enter startup submenu

    4. Enter ethernet submenu

    5. Enter filesystem submenu

    6. Modify BOOTROM password

    7. Reboot

 

Enter your choice(1-7): 7

Reboot...

The reboot is complete and the BootROM can be accessed without a password.

 

 

2. Decompress the vrptest file and name the decompressed file vrpcfg.bat.

 

<Quidway>dir

Directory of flash:/

 

  Idx  Attr     Size(Byte)  Date        Time       FileName 

    0  -rw-          1,752  Oct 01 2008 01:07:03   private-data.txt

    1  -rw-          1,115  Oct 01 2008 00:09:11   vrptest.zip

    ...

 

31,620 KB total (21,620 KB free)

 

<Quidway>unzip vrptest.zip vrpcfg.bat // Run the unzip vrptest.zip vrpcfg.bat command to decompress the vrptest.zip file into a .bat file.

Extract flash:/vrptest.zip to flash:/vrpcfg.bat?[Y/N]:y

100%  complete

%Decompressed file flash:/vrptest.zip flash:/vrpcfg.bat.

 

Run the execute vrpcfg.bat command, and then delete the console port password.

 

<Quidway>system-view

Enter system view, return user view with Ctrl+Z.

[Quidway]execute vrpcfg.bat // Run the execute vrpcfg.bat command to import the bat file to the existing configuration file of the system.

[GT_3F]

[GT_3F]

Info: This operation may take a few seconds. Please wait for a moment...done.

The configuration will be overwritten. Wait for a period of time.

<GT_3F>system-view

Enter system view, return user view with Ctrl+Z.

[GT_3F]user-interface console 0

[GT_3F-ui-console0]undo authentication-mode // Delete the original console port password.

[GT_3F-ui-console0]quit

[GT_3F]quit

 

4. Save the configuration and restart the device to restore the original configuration without the console password.

 

<GT_3F>save // Save the configuration after the password is deleted.

The current configuration will be written to the device.

Are you sure to continue?[Y/N]y

Now saving the current configuration to the slot 0 .

Info: Save the configuration successfully.

<GT_3F>reboot // Restart the device. The console password is deleted and the original service configuration is not lost.

Info: The system is now comparing the configuration, please wait.

System will reboot! Continue?[Y/N]:y

 

Root Cause

Login to the device fails because the password of the console port is forgotten.

Solution

In the configuration file, delete the authentication mode of the console port or do not use the authentication mode.