The stale state timeout for IPv6
neighbors on an interface can be configured.
The following task sets the stale state
timeout for IPv6 neighbors to 180 seconds on an Ethernet interface. After the specified
period of time expires, unused IPv6 neighbors are removed. The configured timeout
value
is applicable for new neighbors created after the stale state timeout value is
altered.
The stale state timeout value is not modified for existing neighbors. - Enter global configuration mode.
device# configure terminal
- Enter interface configuration
mode.
device(config)# interface ethernet 1/1/1
- Configure the stale state
timeout period.
device(config-if-e10000-1/1/1)# ipv6 nd stale-time 180
The following example sets the stale state
timeout period to 180 seconds for an Ethernet interface.
device# configure terminal
device(config)# interface ethernet 1/1/1
device(config-if-e10000-1/1/1)# ipv6 nd stale-time 180
The following example restores the stale state
timeout period to the default of 7200 seconds for a VE interface.
device# configure terminal
device(config)# interface ve 217
device(config-vif-217)# no ipv6 nd stale-time 180