Cisco Catalyst 3650 series Command Reference Manual page 858

switchport port-security aging
To allow unlimited access to a secure address, configure it as a secure address, and disable aging for the
statically configured secure address by using the no switchport port-security aging static interface
configuration command.
Examples This example sets the aging time as 2 hours for absolute aging for all the secure addresses on the port:
Device(config)# interface gigabitethernet1/0/1
Device(config-if)# switchport port-security aging time 120
This example sets the aging time as 2 minutes for inactivity aging type with aging enabled for configured
secure addresses on the port:
Device(config)# interface gigabitethernet1/0/2
Device(config-if)# switchport port-security aging time 2
Device(config-if)# switchport port-security aging type inactivity
Device(config-if)# switchport port-security aging static
This example shows how to disable aging for configured secure addresses:
Device(config)# interface gigabitethernet1/0/2
Device(config-if)# no switchport port-security aging static
Command Reference, Cisco IOS XE Everest 16.5.1a (Catalyst 3650 Switches)
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