ipv6 nd reachable-time


ipv6 nd reachable-time milliseconds


Used on VLAN interfaces to configure the length of time in milliseconds a neighbor is considered reachable after the Neighbor Unreachability Detection algorithm has confirmed it to be reachable. When the switch operates in host mode, this setting can be overridden by a reachable time received in a router advertisement.

This value can be configured in an RA a router advertisement to help ensure that all hosts on a VLAN are using the same reachable time in their neighbor cache.


show ipv6 nd

Use this command to view current setting.