Cisco WS-C3020 Software Configuration Manual page 504

Configuring Port Security
Command
Step 7
switchport port-security violation
{protect | restrict | shutdown |
shutdown vlan}
Cisco Catalyst Blade Switch 3020 for HP Software Configuration Guide
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Purpose
(Optional) Set the violation mode, the action to be taken when a security
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.
We do not recommend configuring the protect mode on a trunk port.
Note
The protect mode disables learning when any VLAN reaches its
maximum limit, even if the port has not reached its maximum limit.
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.
• shutdown vlan—Use to set the security violation mode per VLAN. In
this mode, the VLAN is error disabled instead of the entire port when a
violation occurs.
When a secure port is in the error-disabled state, you can bring it out
Note
of this state by entering the errdisable recovery cause
psecure-violation global configuration command. You can manually
re-enable it by entering the shutdown and no shutdown interface
configuration commands or by using the clear errdisable interface
vlan privileged EXEC command.
Chapter 23 Configuring Port-Based Traffic Control
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