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console password recovery troubleshooting

Publication Date:  2012-07-27 Views:  90 Downloads:  0
Issue Description
Router-NE80E
Problem: ->Not able to login into NE80E router through console as some one has changed the username and password,it gives the Error: Failed to authenticate,we dont know the current username and password.
-> dont know the interface IP adress of ethetnet port.
->When we reboot the router and press Ctrl+B it ask for password we have tried password 8090,8011,but it doest work.it doesnot    take these passwords.
So please tell me how to login into router.
Alarm Information
NULL
Handling Process
One way of the way to   resolve the username/password problem is:first please make sure this device can be powered off or not?If can do this,please power off this device,pull out CF cards (two SRU) and connect to your pc.Copy the configuration file to your pc and delete the username/password under user-interface con 0.Then copy this file from your pc to CF cards again,and put it into device.Try again.
 
 
user-interface con 0        //delete the username/password under here.                                                          
user-interface aux 0                                                            
user-interface vty 0 4                                                          
 authentication-mode none                                                       
 user privilege level 15                                                        
user-interface vty 16 20                                                        
 user privilege level 15 
Root Cause
One way of the way to   resolve the username/password problem is:first please make sure this device can be powered off or not?If can do this,please power off this device,pull out CF cards (two SRU) and connect to your pc.Copy the configuration file to your pc and delete the username/password under user-interface con 0.Then copy this file from your pc to CF cards again,and put it into device.Try again.
 
 
user-interface con 0        //delete the username/password under here.                                                          
user-interface aux 0                                                            
user-interface vty 0 4                                                          
 authentication-mode none                                                       
 user privilege level 15                                                        
user-interface vty 16 20                                                        
 user privilege level 15 
Suggestions
1. Put a standared password on console if nessasory.
2. Dont change the bootrom passward.

END