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Install Junos OS Software Packages

The administrator can use this procedure to upgrade Junos OS on the device.

Note:

Junos OS is delivered in signed packages with manifests which validate the immutability of the contents. There is also a signature of the manifest that can be validated with public keys that are packaged. During install of the software packages, Junos OS validates the signature and the hashes of the contents present in the manifest. If the signature is found to be invalid, the installation process fails. Software update performed in FIPS mode is similar to that in non-FIPS mode for the functionalities available on the device. Some functionalities are impacted only during reboot.

To install software upgrades on the device:

  1. Download the software package as described in Download 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 to use SFTP to copy the file to the /var/tmp/ directory.
  5. Install the new package on the device:

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

  6. Reboot the device to load the installation:
  7. Once the system completes rebooting, log in and use the show version command to verify the successful installation of the new software version.