ipv6 nd reachable-time
Syntax
ipv6 nd reachable-time milliseconds
Description
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.
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