Juniper JUNOS SOFTWARE 10.2 - SOFTWARE INSTALLATION AND UPGRADE GUIDE 4-28-2010 Upgrade Manual page 67

Performing a Recovery Installation
If the router's software is corrupted or otherwise damaged, you may need to perform
a recovery installation, using the emergency boot disk to restore the default factory
installation. Once you have recovered the software you will need to restore the
router s configuration. You can either create a new configuration as you did when
the router was shipped from the factory, or if you saved the router's previous
configuration, you can simply restore that file to the system.
Depending on the situation, you should try to perform the following steps before you
perform the recovery installation:
1.
2.
WARNING: The recovery installation process completely overwrites the entire contents
of the fixed storage media.
3.
To reinstall the JUNOS Software:
1.
NOTE: You can store a configuration on installation media such as a PC Card.
2.
3.
user@host> ftp host
Name: username
Password: password
230 User user logged in.
ftp> cd /filepath
ftp> lcd /config
ftp>bin
Type set to I.
ftp> put rescue.conf.gz
Transfer complete.
ftp> bye
Goodbye.
Ensure you have an emergency recovery disk to use during the installation. When
the router is first shipped, an emergency recovery disk is provided with it. For
instructions on creating an emergency boot disk, see "Creating an Emergency
Boot Disk" on page 43
Copy the existing configuration in the file
to a remote system. For extra safety, you can also copy the backup configurations
(the files named /config/juniper.conf.n
Copy any other stored files to a remote system as desired.
Insert the removable media into the router.
Reboot the router. Do not power off the router if it is already on. Issue the CLI
command.
request system reboot
When the software prompts you with the following question, type y:
Chapter 5: Completing a Recovery Installation
/config/juniper.conf.gz
, where is a number from 0 through 9).
n
Performing a Recovery Installation
from the router
45