A solution to the issue about the password of the S75E console port is lost

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 The customer has not logged in to the S7500E through the console port for a long time and has forgotten the password. Now, the customer cannot log in to the switch through the console port.

If Telnet is configured on the switch, you can log in to the device through Telnet and change or reset the login password of the console port.

If Telnet is not configured or the user has insufficient permissions after logging in to the device through Telnet, you can restore the device control only by deleting the configuration file.

      If the console password is lost and cannot be changed through Telnet, perform the following operations: Delete the startup file.The specific operation steps are as follows:

1.   Enter the Boot Menu

…

Press Ctrl+B to enter Boot Menu...4

Please input BootRom password:

   BOOT MENU

1. Download application file to device

2. Select application file to boot

3. Display all files in device

4. Delete file from device

5. Modify BootRom password

0. Reboot

Enter your choice(0-5):

键入Ctrl+B组合键进入BOOTROM菜单。

2、Export the device configuration file to the external TFTP/FTP server

BOOT MENU

1. Download application file to device

2. Select application file to boot

3. Display all files in device

4. Delete file from device

5. Modify BootRom password

0. Reboot

Enter your choice(0-5):                   // ENTER “CTRL+Y” and press ENTER 

Please select application file upload choices:

1. Upload file from Flash via TFTP protocol

2. Upload file from CF card via TFTP protocol

0. Return to boot menu

Enter your choice(0-2): 1           // Select 1 to export the configuration file in TFTPF mode 

Load File name           :sda startup.cfg

Switch IP address        :192.168.0.36 172.16.0.1

Server IP address        :192.168.0.30 172.16.0.2

 // Enter the configuration file name, device address, and TFTP server address as required

Are you sure to upload file to server? Yes or No (Y/N):Y

// Select “Y”

Load file from flash to sdram...done!

Uploading...done!

In the BOOT menu, press CTRL+Y and ENTER to set the TFTP server as prompted and export the configuration file.

3、Delete the current startup configuration file

Please select application file upload choices:

1. Upload file from Flash via TFTP protocol

2. Upload file from CF card via TFTP protocol

0. Return to boot menu

Enter your choice(0-2): 0                             // Select “0” to return to the Boot menu

   BOOT MENU

1. Download application file to device

2. Select application file to boot

3. Display all files in device

4. Delete file from device

5. Modify BootRom password

0. Reboot

Enter your choice(0-5): 4                       // Select “4” to delete the current startup configuration file

Flash:/

Number.    Size(B)   Time                 Name

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

1          4588      Nov/05/2014 08:08:27 private-data.txt             

2          864024    Jul/19/2012 09:23:35 io_mon.txt                   

3          12610     Aug/13/2012 13:46:44 patch_mpu.bin                

4          970       Aug/09/2013 09:07:44 patchstate                   

5          62930     Nov/05/2014 08:08:51 config.cwmp                  

6          4         Oct/12/2014 11:47:27 snmpboots                    

7          33367493  Oct/15/2014 10:06:24 s7500e-cmw520-r6708p09.app   

8          21413     Nov/05/2014 08:09:19 startup.cfg                   

9          735       Aug/07/2012 10:17:45 hostkey                      

10         4843      Dec/06/2010 17:15:40 config.cfg                   

11         591       Aug/07/2012 10:17:53 serverkey                    

12         2954      Sep/11/2012 07:03:21 irf.cfg                      

13         7918      Jun/20/2000 04:37:39 triple.cfg                   

14         3807      Nov/05/2014 08:09:09 system.xml                   

15         1411      Feb/24/2010 15:07:49 startupwangchen.cfg          

16         16413     Nov/05/2014 08:08:37 qosindex                     

17         429436    Sep/22/2014 13:30:03 lsqsrp2xb05301.btw           

18         6524      Nov/01/2012 15:58:55 mplstest.cfg                 

19         7345      May/15/2012 12:21:26 iccrunning.cfg               

Free space: 29672448 bytes

The current application file is:cfa0:/s7500e-cmw520-r6708p08.app

The backup application file is:cfa0:/s7500e-cmw520-r6105.app

Please input the file number to delete :8       // Select the startup profile, which corresponds to number 8

The file you selected is flash:/startup.cfg, delete it? Yes or No(Y/N)Y

Deleting.....done!                                            // Select Y

After exporting the configuration file, you can delete the startup file so that the device can start with empty configuration again. If the device configuration does not need to be saved, you can directly delete the startup file without backing up the configuration in step 2.  

 4、Restart the switch

           BOOT MENU

1. Download application file to device

2. Select application file to boot

3. Display all files in device

4. Delete file from device

5. Modify BootRom password

0. Reboot

Enter your choice(0-5): 0                             // Select 0 to restart the device

Starting......

RAMLine.....OK

System is booting...............

     After logging in to the device through the console port, you can set a new console password. If you want to restore the original configuration, delete the console port login Settings first