Juniper JUNOS 10.2, Upgrade Manual

Page: 56 / 96

2.
Reboot the router to start the new software using the request system reboot
command:
user@host> request system reboot
Reboot the system? [yes, no] (no) yes
NOTE: You must reboot the device to load the new installation of the JUNOS Software
on the device.
To abort the installation, do not reboot the device; instead, finish the installation and
then issue the
request system software delete jinstall command. This is your last
chance to stop the installation.
The software is loaded when you reboot the system. Installation can take between
5 and 10 minutes. The router then reboots from the boot device on which the
software was just installed. When the reboot is complete, the router displays the
login prompt.
While the software is being upgraded, the Routing Engine on which you are
performing the installation does not route traffic.
3. Log in and issue the show version command to verify the version of the software
installed.
4. (Optional) Add the jweb package using the request system software add command.
Before you can add this package, you must first download the software as you
did the installation package. For more information on downloading the
jweb
package, see “Downloading Software” on page 30.
The jweb installation module adds a router management graphical user interface
that you can use to view and configure your router. For more information about
the
jweb package, see “Installation Modules” on page 7.
5.
After you have upgraded or downgraded the software and are satisfied that the
new software is successfully running, issue the
request system snapshot command
to back up the new software.
Installing the Software Package on a Router with Redundant Routing Engines
If the router has two Routing Engines, perform a JUNOS Software installation on each
Routing Engine separately to avoid disrupting network operation. Install the new
JUNOS Software release on the backup Routing Engine while keeping the currently
running software version on the master Routing Engine. After making sure that the
new software version is running correctly on the backup Routing Engine, switch over
to the newly installed Routing Engine to activate the new software. Finally, install
the new software on the new backup Routing Engine.
WARNING: If graceful Routing Engine switchover (GRES) is enabled when you initiate
a software installation, the software does not install properly. Make sure you issue
34 ■
Installing the Software Package on a Router with Redundant Routing Engines
JUNOS Release 10.2 Software Installation and Upgrade Guide