Overview of ONT Upgrade
The ONT Upgrade feature allows you to upgrade an Optical Network Terminal-registered (ONT-registered) on the Optical Line Terminal (OLT). You can configure whether to automatically reboot an ONT or manually reboot an ONT after a software upgrade.
In automatic reboot, the latest version of an ONT is copied and committed after the ONT is automatically reloaded. In manual reboot the latest version is copied into the ONT. The latest version gets committed after the ONT is manually reloaded.
The ONT local generally supports host program backup, that is, there is a primary host program (primary software) and a backup host program (secondary software). When the host program fails to start, it switches to the standby host program automatically.