Control Route Preference

By default, the JUNOS software assigns a preference of 100 to routes that originate from RIPng. When the JUNOS software determines a route's preference to become the active route, the software selects the route with the lowest preference and installs this route into the forwarding table.

To modify the default RIPng preference value, include the preference statement at the [edit protocols ripng group group-name] hierarchy level:

[edit protocols ripng group group-name]

preference preference; 

preference can be a value from 0 to 4,294,967,295 (2³² - 1).