Configures the time interval after which the Neighbor Discovery cache is deleted or refreshed.
Default expiration time is 1500 seconds.
Interface subtype configuration mode
Cache entries expire and are deleted if they remain in a "stale" state as defined by seconds.
You can modify the ND expiration time only at the interface level, but not at the global level.
The no form of this command restores the default aging timeout of 1500 seconds.
The following example sets the Neighbor Discovery expiration time to 2500 seconds on an Ethernet interface:
device# configure terminal device(config)# interface ethernet 1/2 conf-if-eth-1/2)# ipv6 nd cache expire 2500