The following bullets identify some use cases that you can implement with switches: • Prevent switching loops. You do this by implementing STP or RSTP on switches. • Block flood attacks. Flood guards block MAC flood attacks. • Prevent unauthorized users from connecting to unused ports. Port security methods, such as disabling unused ports, prevent these unauthorized connections. • Provide increased segmentation of user computers. VLANs provide increased segmentation. They are implemented on Layer 3 switches.
