# ipv6 nd ra-lifetime

#### Syntax

ipv6 nd ra-lifetime seconds

no ipv6 nd ra-lifetime

#### Release Information

Command introduced before JunosE Release 7.1.0.
Profile Configuration mode added in JunosE Release 9.0.0.

#### Description

Specifies the router lifetime value in IPv6 router advertisements on an interface. The router lifetime value is the amount of time the router is considered the default router on this interface. The no version restores the default router lifetime value, 1800 seconds.

#### Options

- seconds—Number of seconds this router is considered the default router on this interface; in the range 0–1800. A value of zero (0) indicates that this router is not a default router on this interface. Nonzero values indicate that the router is a default router on this interface. Nonzero values should not be less than the router advertisement interval.

#### Mode

Interface Configuration, Profile Configuration