![]() Learns a new MAC address entry with port B as the outgoing interface and overwrites the old entry for MAC A. ![]() When an illegal user sends frames with MAC A as the source MAC address to port B, the device performs the following operations: When Host A is connected to port A, a MAC address entry will be learned for the MAC address of Host A (for example, MAC A). Mac-address-table age-time), after which they are automatically deleted.ĭynamic MAC address learning does not distinguish between illegitimate and legitimate frames, which can invite security hazards. Dynamic entries remain in the table for a predetermined amount of time (defined with the command If the retrieved address does not exist in the table, it is added.
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