Press Ctrl-z or end to leave the configuration mode.The prompt is now hostname#.Type config-register 0x2102, or the value you recorded in step 2.If you issue a show ip interface brief command, every interface that you want to use should be "up up". Issue the no shutdown command on every interface that is used.Type enable secret to change the enable secret password, for example.Type configure terminal and make the changes.Also, you can see the passwords (enable password, enable secret, vty, console passwords, and so on) either in encrypted or unencrypted format.The unencrypted passwords can be re-used, the encrypted ones will have to be changed with a new one. In this configuration you see under all the interfaces the shutdown command, which means all interfaces are currently shutdown. The show running-config and write terminal commands show the configuration of the router. Type write terminal or show running-config.Important: Type configure memory or copy startup-config running-config to copy the nonvolatile RAM (NVRAM) into memory.You'll be in enable mode and see the Router# prompt. The router reboots but ignores its saved configuration. Type confreg 0x2142 at the rommon 1> prompt to boot from Flash without loading the configuration. If the break sequence doesn't work, see Possible Key Combinations for Break Sequence During Password Recovery for other key combinations. Press Break on the terminal keyboard within 60 seconds of the power-up to put the router into ROMMON.Important: To simulate step 4 on a Cisco 6x00 using NI-2, pull out and then replace the NI-2 card. Important: To simulate step 4 on a Cisco 6400, pull out and then replace the Node Route Processor (NRP) or Node Switch Processor (NSP) card. Using the power switch, turn off the router and then turn it back on.If you don't have access to the router (because of a lost login or tacacs password), you can safely consider that your configuration register is set to 0x2102.If you still have access to the router, type show version and record the setting of the configuration register it is usually 0x2102 or 0x102.Attach a terminal or PC with terminal emulation to the console port of the router.Note: This password recovery procedure works for the following Cisco products: The enable password password can be recovered but the enable secret password is encrypted and can only be replaced with a new password using the procedure below. These passwords are used to protect access to privileged EXEC and configuration modes. This document describes the procedure for recovering an enable password or enable secret passwords.
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