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Chapter 24: MAC Address Security
Section VI: Port Security 294
Locked
Instructs a port to immediately stop learning new dynamic MAC
addresses. Frames are forwarded using the dynamic MAC
addresses that the port has already learned and any static MAC
addresses assigned to the port.
Dynamic MAC addresses learned by the port prior to the
activation of this security level never time out from the MAC
address table, even when the corresponding end nodes are
inactive. However, the port will not learn any new dynamic
addresses.
You can continue to add new static MAC addresses to a port
operating under this security level.
7. If you select the Limited security level, additional options are
displayed in the window for you to configure. They are defined here:
Intrusion Action
Specifies what the switch should do if a port receives an invalid
frame. Options are
Discard - Discards the invalid frame.
Trap - Discards the invalid frame and sends an SNMP trap.
Discard - Discards the invalid frame, sends an SNMP trap, and
disables the port.
Threshold
Specifies the maximum number of dynamic MAC addresses you
want the port to be able to learn. The range is 1 to 256. The default
is 100.
Port Participating
Applies only when the intrusion action is set to trap or disable.
This option does not apply when intrusion action is set to discard.
If this option is set to No when intrusion action is set to trap or
disable, the port discards invalid packets, but it does not send the
SNMP trap or disable the port. If you want the switch to send a
trap and/or disable the port, you must sent this option to Yes.
8. After configuring the parameters, click Apply.
Note
A change to a port’s MAC security is immediately activated on the
port.
9. To permanently save the changes, select the Save Config menu
selection.
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