Cisco Systems UBR10012

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Cisco uBR10012 Universal Broadband Router Software Configuration Guide

OL-1520-05

Chapter2 Configuring the Cable Modem Termination System for the First Time

Understanding CiscouBR10012Router Configuration Fundamentals

Note The enable secret password is encrypted and cannot be recovered; it must be replaced. The enable

and console passwords can be encrypted text or clear text.

Proceed to the next step to replace an enable secret, console login, or enable password. If there is no

enable secret password, note the enable and console login passwords if they are not encrypted and

proceed to Step17.

Caution Do not perform the next step unless you have determined that you must change or replace the enable,

enable secret, or console login passwords. Failure to follow the steps as presented here could cause

your router configuration to be erased.

Step13 Enter the configure memory command to load the startup configuration file into running memory. This

action allows you to modify or replace passwords in the configuration.

Router# configure memory

Step14 Enter the configure terminal command for configuration mode:

Router# configure terminal

Step15 To change all three passwords, enter the following commands:

Router(config)# enable secret newpassword1

Router(config)# enable password newpassword2

Router(config)# line con 0

Router(config)# password newpassword3

Change only the passwords necessary for your configuration. You can remove individual passwords by

using the no form of the previous commands. For example, entering the no enable secret command

removes the enable secret password.

Step16 You must configure all interfaces to not be administratively shut down as follows:

Router(config)# interface fast ethernet 0/0/0

Router(config)# no shutdown

Enter the equivalent commands for all interfaces that were originally configured. If you omit this step,

all interfaces are administratively shut down and unavailable when the router is restarted.

Step17 Use the config-register command to set the configuration register to the original value noted in Step3

or Step7.

Step18 Press Ctrl-Z or type end to exit configuration mode:

Router(config)# end

Caution Do not perform the next step unless you have changed or replaced a password. If you have skipped

Step13 through Step16 previously, then proceed now to Step20. Failure to observe this sequence

causes the system to erase your router configuration file.

Step19 Enter the copy running-config startup-config command to save the new configuration to nonvolatile

memory:

Router# copy running-config startup-config

Step20 Enter the reload command to reboot the router:

Router# reload

Step21 Log in to the router with the new or recovered passwords.