Configuring and Monitoring Port Security
Port Security
Syntax: port-security (Continued)
mac-address [<mac-addr>] [<mac-addr>] . . . [<mac-addr>]
Available for learn-mode with the, static, configured, or
limited-continuous option. Allows up to eight authorized
devices (MAC addresses) per port, depending on the value
specified in the address-limit parameter. The mac-address
limited-continuous mode allows up to 32 authorized MAC
addresses per port.
If you use mac-address with static, but enter fewer devices
than you specified in the address-limit field, the port
accepts not only your specified devices, but also as many
other devices as it takes to reach the device limit. For
example, if you specify four devices, but enter only two
MAC addresses, the port will accept the first two non-
specified devices it detects, along with the two specifically
authorized devices. Learned addresses that become
authorized do not age-out. See also “Retention of Static
Addresses” on page 13-17.
action < none | send-alarm | send-disable >
Specifies whether an SNMP trap is sent to a network
management station when Learn Mode is set to static and
the port detects an unauthorized device, or when Learn
Mode is set to continuous and there is an address change
on a port.
none: Prevents an SNMP trap from being sent. none is the
default value.
send-alarm: Sends an intrusion alarm. Causes the switch
to send an SNMP trap to a network management station.
send-disable: Sends alarm and disables the port. Available
only in the static, port-access, configured, or limited learn
modes. Causes the switch to send an SNMP trap to a
network management station and disable the port. If you
subsequently re-enable the port without clearing the port’s
intrusion flag, the port blocks further intruders, but the
switch will not disable the port again until you reset the
intrusion flag. See the Note on 13-35.
For information on configuring the switch for SNMP
management, refer to the Management and Configuration
Guide for your switch.
—Continued—
13-16
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