Enabling And Configuring Port Security Aging - Cisco WS-C3750-48PS-S Software Configuration Manual

Chapter 24 Configuring Port-Based Traffic Control
You must specifically delete configured secure MAC addresses from the address table by using the no
switchport port-security mac-address mac-address interface configuration command.
This example shows how to enable port security on a port and to set the maximum number of secure
addresses to 50. The violation mode is the default, no static secure MAC addresses are configured, and
sticky learning is enabled.
Switch(config)# interface gigabitethernet1/0/1
Switch(config-if)# switchport mode access
Switch(config-if)# switchport port-security
Switch(config-if)# switchport port-security maximum 50
Switch(config-if)# switchport port-security mac-address sticky
This example shows how to configure a static secure MAC address on VLAN 3 on a port:
Switch(config)# interface gigabitethernet1/0/2
Switch(config-if)# switchport mode trunk
Switch(config-if)# switchport port-security
Switch(config-if)# switchport port-security mac-address 0000.02000.0004 vlan 3

Enabling and Configuring Port Security Aging

You can use port security aging to set the aging time for all secure addresses on a port. Two types of
aging are supported per port:
•
•
Use this feature to remove and add devices on a secure port without manually deleting the existing secure
MAC addresses and to still limit the number of secure addresses on a port. You can enable or disable the
aging of secure addresses on a per-port basis.
Beginning in privileged EXEC mode, follow these steps to configure port security aging:
Command
Step 1 configure terminal
Step 2 interface interface-id
78-16180-02
Absolute—The secure addresses on the port are deleted after the specified aging time.
Inactivity—The secure addresses on the port are deleted only if the secure addresses are inactive for
the specified aging time.
Purpose
Enter global configuration mode.
Enter interface configuration mode for the port on which you
want to enable port security aging.
Catalyst 3750 Switch Software Configuration Guide
Configuring Port Security
24-13