# 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