Reset the enable password for a cisco Route

Re-set the enable password for cisco Route to power off and restart the router once (cold start). The Super Terminal interface is displayed continuously within 2 and 60 seconds ##... press Ctrl + break (Force interrupt) at the same time. 3. Enter confreg 0x21424 at the rommon1> prompt, enter reset5 at the rommon2> prompt, and check whether the router enters the initialization interface, press NO6, enter enable at the route> prompt (indicating that the new router enters other configurations such as password-free) 7, copy startup-config running-config8, the original router Name> config term (enter Configuration Mode) 9. enable secret new password 10. Place all ports no shut at 11 and config-register 0x2102 (recover the registered value) 12. Press Ctrl + Z to return to privileged mode and enter wr to save the configuration (or use copy running-config startup-config). 14. Hot Start reload. Cisco routers are widely used in network interconnection. Among them, 2500 series routers are widely used in low-end users. So what if you accidentally forget the superuser password of the 2500 series router? Don't be afraid, as long as you can recover as follows: preparation: A computer runs the terminal Simulation Program (Super Terminal can be started in Windows 95/98), the microcomputer serial port (COM1/COM2) connect to the Console port of the router through the configuration line randomly assigned by Cisco. Recovery steps: (1) Start the vro, press Ctrl + Break within 30 seconds, and the prompt ">" appears. (If this prompt is not displayed, the vro restarts and repeats (1) step ). (2) type the following command: "> o/r 0x142 ". (3) initialize the vro: "> I ". (4) When the system restarts, the screen displays the system configuration dialog: "policystem restart aiton to get started ?, Type "no". The system displays "Press RETURN to get started! ", Press the" Return "key, and the system displays" Router> ". (5) enter the following command: "Router> enable" to enter the Super User status (the system no longer requires you to enter the super password); "Router # show startup-config" to display the configuration parameters, remember the password you see (you can also use the enable serect "changepassword" command to change the superuser password ). (6) type the following command to restore the original register: "Router (config) # config-reg 0x2102"; "Router (config) # ctrl-z "; "Router (config) # wr" storage disk. (7) restart the vrouter to "Router # reload ". The December 14 China Computer news D8 published an article about what to do when I forgot the Cisco2500 vro password. I think the recovery principles and steps described in this article are basically correct, however, some changes should be made in the implementation process: 1. when a router is started, press the Break Key within 60 seconds according to the technical manual provided by Cisco, instead of pressing the Crl + Break Key within 30 seconds as described in this article. 2. before entering the "> o/r 0x142" command, type the "> e/s 2000002" command and record the return value) # Replace 2102 with the config-register 0x2102 command (in fact, the return value is usually 2102, But what if not ?). 3. After completing Steps 3, 4, and 5 described in this article, do not run step 6 directly. Otherwise, all vro configurations will be lost! (Although it is the same as the technical manual provided by Cisco, I am afraid Cisco has not considered this consequence) because in step 6, although config-register can be restored, it also overwrites the previous configuration file with a blank configuration file. Even if the Enable password is found, it does not make sense. There are two ways to continue working:. start the vro directly, continue with step 1, type "> o/r 0x2102" (that is, the returned value recorded), and type "> I. B. run the following command: "Router # copy start run" (copy the configuration file to the memory first) "Router # config t" "Router (config) # config-register 0x2102 "(that is, the returned value)" Router (config) # Ctrl + z "" Router # write (after changing config-register, save the configuration file ")" Router # reload "is not only applicable to Cisco2500, but also to Cisco2000, Cisco3000, Cisco4000, and Cisco7000.