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Install Junos OS Software Package

To install the Junos OS software package on the device:

  1. Download the software package as described in Downloading Software Packages from Juniper Networks.
  2. If you have not already done so, connect to the console port on the device from your management device, and log in to the Junos OS CLI.
  3. (Optional) Back up the current software configuration to a second storage option. See the Software Installation and Upgrade Guide for instructions on performing this task.
  4. Copy the software package to the device. We recommend that you use FTP to copy the file to the /var/tmp/ directory.
  5. Install the new package on the device:

    Replace the variable option package with local directory on the device where the software package is copied. For example, /var/tmp/package.tgz.

    Junos OS comes in signed packages with digital signatures, ensuring that Juniper Networks software operates flawlessly. During installation of the software packages, Junos OS validates the signatures and the public key certificates used to sign the software packages digitally. If the signature or certificate is found invalid (for example, an expired certificate or the system fails to verify the certificate against the root certificate authority (CA) certificate stored in the Junos OS internal store), the installation process fails.

  6. Reboot the device to load the installation:
  7. After the reboot has completed, log in and use the show version command to verify that the new version of the software is successfully installed.

Related Documentation