How to Recover Router Password !!!!!!

Router Password Recovery

1. you can connect your router with consol port to configure it .

2.Then turn on and turn off and turn on your router .

3.Then when the IOS decompressed press Ctrl + Puase break key .

(you are now in the Rommon>)

4.Then change confreg to 0x2142 then press Enter

(so what is the meaning of this 0x2142 Value this is meaning Router behavioures

this Value Translated to ( Causes system softwareto ignore NVRAM contents )

this is mean we ignore the NVRAM which contains startup-configeration )

5.Then type reset to restart your router then press enter to restart your router without the NVRAM or Startup-Configeration .

6. then the router enter to default mode like this

--- System Configuration Dialog ---
Continue with configuration dialog? [yes/no] : n

7.Then type enable to enter to the privellege mode # .

8. Then type copy copy startup-config running-config (you should make that causes you ignored your NVRAM which contain startup-config so you should copy your startup-config to running-config )

9. Then type configure terminal to enter to the global config .

10. you can enter to your passwords to change it or remove all passwords like (line console 0 or line vty 0 4 ..etc ).

11. after you made that go to Router(config)# then restore the config-register value to the default value ( 0x2102 ) .

12. Then type exit .

13.Then type in privellege # mode copy running-config startup-config .

14.Then type reload and you are Done !!!!!

practical Tutorial Example on Packet tracer :

    

1. Press RETURN to get started !

                          2. then press enter ..

Router > enable

Router # configure terminal

Router (config) # line console 0

Router(config-line)#password ( bla bla bla bla bla bla bla )

Router(config-line)#login

Router(config-line)#exit

Router(config)#line vty 0 4

Router(config-line)#password (bla bla bla bla bla bla bla bla bla)

Router(config-line)#login

Router(config-line)#end

Router#copy running-config startup-config

Destination filename [startup-config]? Press enter

Building configuration...

[OK]

Router#reload

Proceed with reload? [confirm] Press enter to reload

cumonto Recover your passwords :

1. turn off and turn on the router

2. while the router decompress the IOS like this

                

3. press on CTRL + Pause break

4.you will enter to the Rommon Mode

monitor: command "boot" aborted due to user interrupt

rommon 1 > confreg 0x2142 then press enter

rommon 2 > reset

the router reset now and decompress the IOS and enter to

the normal default router mode

5. press (n) then enter

6.Router >enable

7.Router#copy startup-config running-config

Destination filename [running-config]?
                                                                                            
513 bytes copied in 0.416 secs (1233 bytes/sec)

8.Router #config terminal

9.Router(config)#line console 0

10.Router(config-line)#no password i remove line console 0 password

11.Router(config-line)#exit

12. Router(config)#line vty 0 4

13.Router(config-line)#no password i remove line vty 0 4 (telnet)

14.Router(config-line)#exit

15.Router(config)#config-register 0x2102 i restore config-register value to default 0x2102

16.Router(config)#end

17.Router#copy running-config startup-config
Destination filename [startup-config]?
Building configuration...
[OK]

18.Router#reload to take effect

19.You Are Done !!!!!!!!!!!!!!!!!!!!!!!!!!!