JNCIA JN0-100 Certification Help

Juniper Router Password Recovery Procedure:

1. Power off the router.
2. Plug in a serial cable from router console port into PC's serial port.
3. On the PC start an asynchronous terminal emulation application (such as MS Windows Hyperterminal) and select the port settings as follows:
   • Bits per second: 9600
   • Data bits: 8
   • Parity: None
   • Stop bits: 1
   • Flow control: None
4. Power on the router.

   The terminal emulation screen on your management device displays the router’s boot sequence.

5. When the following prompt appears, press the Spacebar to access the router’s bootstrap loader command prompt:

   Hit [Enter] to boot immediately, or space bar for command prompt.
   Booting [kernel] in 9 seconds...
   

6. At the following prompt, enter boot -s to start up the system in single-user mode.
   
   

   ok boot -s
7. At the following prompt, enter recovery to start the root password recovery procedure.Enter full pathname of shell or 'recovery' for root password recovery or RETURN for /bin/sh: recovery
8. Enter configuration mode in the CLI using 'edit' statement.
9. Set the root password.
   For example:

   user@host# set system root-authentication plain-text-password
10. At the following prompt, enter the new root password. For example:
    
    

    New password: juniper1

    Retype new password:

11. At the second prompt, reenter the new root password.
12. After you have finished configuring the password, commit the configuration.
    
    root@host# commit

    commit complete

13. Exit configuration mode in the CLI.
14. Exit operational mode in the CLI.
15. At the prompt, enter y to reboot the router. Reboot the system? [y/n] y