Ginter 01‐1 - LPouliot/Junior-Spring-NET-330-01-Network-Design GitHub Wiki

Week 1 Stuff you might need

How to reset a Cisco Router Password.

Have Putty or some other terminal program running on port connected to the router console cable

As router starts to boot send a break signal (Ctrl-Break on Putty)

This should put the router in ROMMON mode.

Type confreg 0x2142 This sets a bit in the router to bypass the startup configuration

Type reset to reboot the router.

Respond no to all startup questions

Type enable to get into privileged mode

Get the startup configuration into memory: copy startup-config running-config

Enter configuration mode by typing: configure terminal

Set a password by typing enable secret aSecretPassword

Put the configuration register back to boot from startup: config-register 0x2102

Save your password: copy running-config starup-config

You can now reboot or restart your router.

Reset Startup to default

From putty press ctrl-break while router stats booting

at rommon prompt type confreg 0x2142

at rommon prompt type reset to restart the router

When the router offers to go through setup type no

at Router> prompt type enable to enter the privileged enable mode.

at Router# prompt type copy running-config startup-config

at Router# prompt type config t

at the config prompt type config-register 0x2102

type exit to leave config mode

type write memory to create a configuration

type reload to reload