# IPv6.Link[x].NDReachabilityTimer

Specifies the neighbor discovery reachability timer in milliseconds for the specified Ethernet interface.

#### Syntax

IPv6.Link[x].NDReachabilityTimer = ndreach

x = index of the link entry

#### Access

Read/Write

#### Type

Integer

#### Default

30000

#### Allowed values

1000 - 6000000

#### Example

IPv6.Link[1].NDReachabilityTimer = 60000

#### Details

This keyword configures how often the IPv6 stack reverifies that a particular neighbor is reachable. For information about neighbor discovery, refer to RFC 2461 - Neighbor Discovery for IP Version 6. For information about using board keywords to configure IPv6 Ethernet interfaces, refer to Configuring IPv6 Ethernet connections.

#### See also

IPv6.Link[x].NDRetranTimer, IPv6.Link[x].NDAttempts