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Cisco uBR10012 Universal Broadband Router Software Configuration Guide
OL-1520-05
Chapter 2 Configuring the Cable Modem Termination System for the First Time
Understanding Cisco uBR10012 Router 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
Step 17
.
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.
Step 13
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
Step 14
Enter the
configure terminal
command for configuration mode:
Router#
configure terminal
Step 15
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.
Step 16
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.
Step 17
Use the
config-register
command to set the configuration register to the original value noted in Step 3
or Step 7.
Step 18
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
Step 13
through
Step 16
previously, then proceed now to
Step 20
. Failure to observe this sequence
causes the system to erase your router configuration file.
Step 19
Enter the
copy running-config startup-config
command to save the new configuration to nonvolatile
memory:
Router#
copy running-config startup-config
Step 20
Enter the
reload
command to reboot the router:
Router#
reload
Step 21
Log in to the router with the new or recovered passwords.
