?– Static:You statically con?¬?gure which speci?¬?c MAC addresses are permitted to use a
port. Any source MAC addresses that you do not speci?¬?cally permit are not allowed to
source frames to the port.
?– A combination of static and dynamic learning: You can choose to specify some of
the permitted MAC addresses and let the switch learn the rest of the permitted MAC
addresses. For example, if the number of MAC addresses is limited to four, and you
statically con?¬?gure two MAC addresses, the switch dynamically learns the next two
MAC addresses that it receives on that port. Port access is limited to these four
addresses: two static and two dynamically learned addresses. The two statically
con?¬?gured addresses do not age out, but the two dynamically learned addresses can,
depending on the switch con?¬?guration.
?– Dynamic ???sticky learning???: When this feature is con?¬?gured on an interface, the
interface converts dynamically learned addresses to ???sticky secure??? addresses. This
feature adds the dynamically learned addresses to the running con?¬?guration as if they
were statically con?¬?gured using the switchport port-security mac-address
command.
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