Installing Software Upgrades With The Cli - Juniper J-Series Administration Manual

J-series Services Router Administration Guide

Installing Software Upgrades with the CLI

To install software upgrades on a router with the CLI:
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Installing Software Upgrades with the CLI

If your router has 256 MB of flash memory and 256 MB of RAM, see the special
instructions in the J-series Services Router Release Notes.
Download the software package as described in "Downloading Software Upgrades
from Juniper Networks" on page 181.
If you are installing the software package from a local directory on the router,
copy the JUNOS software package to the router. We recommend that you copy
it to the /var/tmp directory.
Install the new package on the Services Router, entering the following command
in operational mode in the CLI:
user@host> request system software add unlink no-copy source
Replace with one of the following paths:
source
For a software package that is installed from a local directory on the router,
use /pathname/package-name
/var/tmp/junos-j-series8.5R2.1.tar.gz
For software packages that are downloaded and installed from a remote
location, use one of the following paths:
ftp://hostname/pathname/package-name
or
http://hostname/pathname/package-name
By default, the
request system software add
to validate the software package against the current configuration as a prerequisite
to adding the software package. This validation ensures that the router can reboot
successfully after the software package is installed. This is the default behavior
when you are adding a software package.
The option removes the package at the earliest opportunity so that the
unlink
router has enough room to complete the installation.
(Optional) The no-copy option specifies that a software package is installed, but
a copy of the package is not saved. Include this option if you do not have enough
space on the compact flash to perform an upgrade that keeps a copy of the
package on the router.
After the software package is installed, reboot the router:
user@host> request system reboot
When the reboot is complete, the router displays the login prompt.
(for example,
)
command uses the option
validate