ipv6 nd ra-lifetime
By default, the router lifetime value included in router advertisement messages sent from an interface is 1800 seconds.
Interface configuration mode
The "router lifetime" value, which is included in router advertisements sent from a particular interface.
If you set this parameter to a value that is not 0, the router is advertised as a default router on the interface.
RUCKUS recommends that the interval between router advertisement transmission be less than or equal to the router lifetime value if the router is advertised as a default router.
The
no form of the command resets the value to 1800 seconds.