Cisco 3560G 48TS Software Configuration Guide - Page 406

Configuring Port Security Chapter 20 Configuring Port-Based Traffic Control Step 6 Command Purpose switchport port-security violation (Optional) Set the violation mode, the action to be taken when a security {protect | restrict | shutdown} violation is detected, as one of these: • protect-When the number of port secure MAC addresses reaches the maximum limit allowed on the port, packets with unknown source addresses are dropped until you remove a sufficient number of secure MAC addresses to drop below the maximum value or increase the number of maximum allowable addresses. You are not notified that a security violation has occurred. Note We do not recommend configuring the protect mode on a trunk port. The protect mode disables learning when any VLAN reaches its maximum limit, even if the port has not reached its maximum limit. Step 7 switchport port-security mac-address mac-address [vlan vlan-id] Step 8 Step 9 switchport port-security mac-address sticky switchport port-security mac-address sticky mac-address Step 10 end • restrict-When the number of secure MAC addresses reaches the limit allowed on the port, packets with unknown source addresses are dropped until you remove a sufficient number of secure MAC addresses or increase the number of maximum allowable addresses. An SNMP trap is sent, a syslog message is logged, and the violation counter increments. • shutdown-The interface is error-disabled when a violation occurs, and the port LED turns off. An SNMP trap is sent, a syslog message is logged, and the violation counter increments. Note When a secure port is in the error-disabled state, you can bring it out of this state by entering the errdisable recovery cause psecure-violation global configuration command, or you can manually re-enable it by entering the shutdown and no shutdown interface configuration commands. (Optional) Enter a secure MAC address for the interface. You can use this command to enter the maximum number of secure MAC addresses. If you configure fewer secure MAC addresses than the maximum, the remaining MAC addresses are dynamically learned. (Optional) On a trunk port, you can specify the VLAN ID and the MAC address. If no VLAN ID is specified, the native VLAN is used. Note If you enable sticky learning after you enter this command, the secure addresses that were dynamically learned are converted to sticky secure MAC addresses and are added to the running configuration. (Optional) Enable stick learning on the interface. (Optional) Enter a sticky secure MAC address, repeating the command as many times as necessary. If you configure fewer secure MAC addresses than the maximum, the remaining MAC addresses are dynamically learned, are converted to sticky secure MAC addresses, and are added to the running configuration. Note If you do not enable sticky learning before this command is entered, an error message appears, and you cannot enter a sticky secure MAC address. Return to privileged EXEC mode. 20-12 Catalyst 3560 Switch Software Configuration Guide 78-16156-01