![]() Sticky secure MAC addresses - MAC addresses that can be dynamically learned or manually confiugred, then stored in the address table and added to the running configuration.MAC addresses configured in this way are removed when the switch restarts. Dynamic secure MAC addresses - MAC addresses that are dynamically learned and stored only in the address table.MAC addresses configured in this way are stored in the address table and are added to the running configuration on the switch. Static secure MAC addresses - MAC addresses that are manually configured on a port by using the switchport port-security mac-address mac-address interface configuration mode command.The type of secure address is based on the configuration and includes: There are a number of ways to configure port security. If a port is configured as a secure port and the maximum number of MAC addresses is reached, any additional attempts to connect by unknown MAC addresses will generate a security violation. If the number of MAC addresses allowed on the port is limited to one, then only the device with that specific MAC address can successfully connect to the port. ![]() Port security can be configured to allow one or more MAC addresses. The MAC addresses of legitimate devices are allowed access, while other MAC addresses are denied. Port security limits the number of valid MAC addresses allowed on a port. One way to secure ports is by implementing a feature called port security. All switch ports (interfaces) should be secured before the switch is deployed for production use.
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