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5.
6.
NOTE: After you issue the
the previous version of the software, because the running copy and backup copy of
the software are identical.
Upgrading Routers Using ISSU
Unified in-service software upgrade (ISSU) enables you to upgrade between two
different JUNOS Software releases with no disruption on the control plane and with
minimal disruption of traffic. ISSU is only supported by dual Routing Engine platforms.
In addition, graceful Routing Engine switchover (GRES) and nonstop active routing
(NSR) must be enabled.
For additional information about using ISSU, see the JUNOS High Availability Guide.
user@host> request system software add /var/tmp/jbase-release-signed.tgz
user@host> request system software add /var/tmp/jkernel-release-signed.tgz
user@host> request system software add /var/tmp/jpfe-release-signed.tgz
user@host> request system software add /var/tmp/jdocs-release- signed.tgz
user@host> request system software add /var/tmp/jweb-release- signed.tgz
user@host> request system software add /var/tmp/jroute-release-signed.tgz
user@host> request system software add /var/tmp/jcrypto-release-signed.tgz
For more information about the
JUNOS System Basics and Services Command Reference.
Reboot the router to start the new software:
user@host> request system reboot
After you have upgraded or downgraded the software and are satisfied that the
new software is successfully running, issue the
to back up the new software:
user@host> request system snapshot
The root file system is backed up to
The root and
/config
file systems are on the router s CompactFlash card, and the
and
file systems are on the router s hard disk.
/altroot
/altconfig
request system snapshot
Chapter 4: Completing a Standard or Change Category Installation
request system software add
request system snapshot
, and
/altroot
/config
command, you cannot return to
Upgrading Routers Using ISSU
command, see the
command
is backed up to
.
/altconfig
41
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