Install, License, and Upgrade Configuration

The OcNOS Installation Guide provides instructions for installing the OcNOS software, including the correct license. It includes the following steps:

Download the OcNOS installation image.
Download an OcNOS license.
Install OcNOS:
From an FTP, HTTP/HTTPS, or TFTP server
From a USB stick
Using Zero Touch Provisioning (ZTP)
Set up a license

USB restoration disables ZTP.

OcNOS supports both patch upgrades and full upgrades:

A patch upgrade updates the software with a new OcNOS image that includes bug fixes, but does not involve changes to the kernel.
A full upgrade updates the software with a new OcNOS ONIE image, including bug fixes and kernel changes.

Installing OcNOS using HTTPS is not supported through ONIE.

The OcNOS Installation Guide also covers procedures for upgrading existing OcNOS installations by either:

Installing a new OcNOS version over an existing OcNOS version saves the existing configuration files.
Installing a fresh OcNOS version is destructive and removes existing configuration files, SSH keys, and trial licenses. Users must manually restore these items from backups as needed.