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Catalyst 4500 Series Switch, Cisco IOS Software Configuration Guide - Cisco IOS XE 3.9.xE and IOS 15.2(5)Ex
 
Chapter 55      Configuring Port Security
Configuring Port Security on Access Ports
This example shows how to set the aging time to 2 minutes: 
Switch(config-if)# switchport port-security aging time 2 
You can verify the previous commands with the show port-security interface command.
Example 4: Setting the Aging Timer Type
This example shows how to set the aging timer type to Inactivity for the secure addresses on the Fast 
Ethernet interface 3/5:
Switch# configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
Switch(config)# interface fastethernet 3/5
Switch(config-if)# switch port-security aging type inactivity
Switch(config-if)# end
Switch# show port-security interface fastethernet 3/5
Port Security              : Enabled
Port Status                : Secure-up
Violation Mode             : Shutdown
Aging Time                 : 0 mins
Aging Type                 : Inactivity
SecureStatic Address Aging : Disabled
Maximum MAC Addresses      : 1
Total MAC Addresses        : 0
Configured MAC Addresses   : 0
Sticky MAC Addresses       : 0
Last Source Address:Vlan   : 0000.0000.0000:0
Security Violation Count   : 0
Example 5: Configuring a Secure MAC Address
This example shows how to configure a secure MAC address on Fast Ethernet interface 5/1 and to verify 
the configuration:
Switch# configure terminal
Enter configuration commands, one per line.  End with CNTL/Z.
Switch(config)# interface fastethernet 5/1
Switch(config-if)# switchport mode access
Switch(config-if)# switchport port-security
Switch(config-if)# switchport port-security maximum 10
Switch(config-if)# switchport port-security mac-address 0000.0000.0003 (Static secure MAC)
Switch(config-if)# end
Switch#show port address
Secure Mac Address Table
------------------------------------------------------------------------
Vlan    Mac Address       Type                     Ports   Remaining Age
                                                              (mins)
----    -----------       ----                     -----   -------------
   1    0000.0000.0003    SecureConfigured         Fa5/1        -
------------------------------------------------------------------------
Total Addresses in System (excluding one mac per port)     : 2
Max Addresses limit in System (excluding one mac per port) : 3072