# ipv6 nd reachable-time

#### Syntax

ipv6 nd reachable-time { milliseconds | hours minutes seconds }

no ipv6 nd reachable-time

#### Release Information

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

#### Description

Specifies the amount of time that the E Series router can reach a remote IPv6 node after some reachability confirmation event has occurred. The no version restores the default value 0 milliseconds for router advertisements and 3,600,000 milliseconds (1 hour) for Neighbor Discovery activity of the E Series router.

#### Options

- milliseconds—Amount of time, in the range 0–21600000 milliseconds, that the E Series router can reach a remote node after some reachability confirmation event has occurred
- hours minutes seconds—Amount of time, in the range 0 hours 0 minutes
  0 seconds – 6 hours 0 minutes 0 seconds, that the E Series router can reach a remote node after some reachability confirmation event has occurred; this specification is not supported in Profile Configuration mode

#### Mode

Interface Configuration, Profile Configuration