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Cisco ME 3400 EthernetAccess Switch SoftwareConfiguration Guide
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Chapter21 Configuring Port-Based Traffic Control
Configuring Port Security
To return the interface to the default condition as not a secure p ort, use the no switchport port -security
interface configuration command. If you enter this command when sticky learning is en abled, the stick y
secure addresses remain part of the running configuration but are removed from the address table. All
addresses are now dynamically learned.
To return the interface to the default number of secure MAC addresses, use the no switchport
port-security maximum value interface configuration command. To return the violation mode to the
default condition (shutdown mode), use the no switchport port-security violation {protocol | restrict}
interface configuration command.
To disable sticky learning on an interface, use the no switchport port-security mac-address sticky
interface configuration command. The interface converts the sticky secure MAC addresses to dynamic
secure addresses. However, if you have previously saved the configuration with the sticky MAC
addresses, you should save the configuration again after entering the no switchport port-security
mac-address sticky command, or the sticky addresses will be restored if the switch reboots.
Use the clear port-security {all | configured | dynamic | sticky} privileged EXEC command to delete
from the MAC address table all secure addresses or all secure addresses of a specific type (configured,
dynamic, or sticky) on the switch or on an interface.
To delete a specific secure MAC address from the address table, use the no switchport port-security
mac-address mac-address interface configuration command.
To delete all dynamic secure addresses on an interface from the address table, enter the no switchport
port-security interface configuration command follo wed by the switchport port -security command (to
re-enable port security on the interface). If you use the no switchport port-security mac-address sticky
interface configuration command to convert sticky secure MAC addresses to dynamic secure MAC
addresses before entering the no switchport port-security command, a ll secur e addresses on th e
interface except those that were manually configured are deleted.
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 gigabitethernet0/1
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 por t:
Switch(config)# interface gigabitethernet0/2
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