Services Routers Hardware Guide

The rescue configuration is a previously committed, valid configuration. You must
have previously set the rescue configuration through the J-Web interface or the CLI.
To press the RESET CONFIG button, insert a small probe (such as a straightened paper
clip) into the pinhole on the front panel (see Figure 8 on page 13 and
Figure 9 on page 13):
■
By default, pressing and quickly releasing the RESET CONFIG button loads and
commits the rescue configuration through the J-Web interface or the CLI. (For
details, see the J-Web Interface User Guide and the JUNOS CLI User Guide.)
■
By default, pressing and holding the RESET CONFIG button for 15 seconds or
more—until the STATUS LED blinks red—deletes all configurations on the router,
including the backup configurations and rescue configuration, and loads and
commits the factory configuration. (For details about the factory default settings,
see the JUNOS Software Administration Guide.)
Changing the RESET CONFIG Button Behavior
You can change the default operation of the the RESET CONFIG button by limiting
how the button resets the router:
■
To prevent the RESET CONFIG button from setting the router to the factory default
configuration and deleting all other configurations, enter the following command.
You can still press and quickly release the button to reset it to the rescue
configuration.
user@host# set chassis config-button no-clear
■
To prevent the RESET CONFIG button from setting the router to the rescue
configuration, enter the following command. You can still press and hold button
for 15 seconds or more to reset the router to the factory defaults.
user@host# set chassis config-button no-rescue
■ To disable the button and prevent the router from resetting to either configuration,
use the following command:
user@host# set chassis config-button no-clear no-rescue
The no-rescue option prevents the RESET CONFIG button from loading the rescue
configuration. The no-clear option prevents the RESET CONFIG button from deleting
all configurations on the router.
To return the function of the RESET CONFIG to its default behavior, remove the
config-button statement from the router configuration.
Recovering the Root Password
If you forget the root password for the router, you can use the password recovery
procedure to reset the root password.
Recovering the Root Password ■ 161
Chapter 9: Troubleshooting a Services Router