Related Documentation
Upgrading Application Packages
You can upgrade to the latest version of an application by reinstalling the application using the new package name.
As of Junos OS Release 12.3, Junos applications will install on Junos only if the application is built with the same release as the Junos OS Release on which the application is being installed. For example, an application built with Release 12.3R2 will only install on Junos OS Release 12.3R2 and will not install on Junos OS Release 12.3R1 or Junos OS Release 12.3R3 or Junos OS Release 13.1R1.
 | Note: If graceful routing engine switchover (GRES), or nonstop active routing (NSR) is enabled when you initiate a software installation, the software does not install properly. Make sure you issue the CLI delete chassis redundancy command when prompted. If GRES is enabled, it will be removed with this command. By default, NSR is disabled. If NSR is enabled, remove the nonstop-routing statement from the [edit routing-options] hierarchy level to disable it. For more information about GRES and NSR, see the Junos OS High Availability Configuration Guide. |
As of Junos Release OS 12.2, if you are upgrading an application package over an installed application package (that is, reinstalling), you do not have to first remove the configuration contributed by that application.
To upgrade an application:
- Add both the application package. If there are more than
one package, you can add them at the same time.user@router> request system software add set [new-package-name1 new-package-name2 junos-package1 junos-package2]
 | Tip: After you have upgraded the software in the device and are satisfied that the new application package is successfully installed and running, take a snapshot to back up the new software to the /altroot and /altconfig file systems. user@router> request system snapshot After you run the request system snapshot command, you cannot return to the previous version of the software, because the running and backup copies of the software are identical. |
