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Configuring and Implementing Layer 2 Port Security
An instructional guide and laboratory exercise focused on configuring Layer 2 security features, specifically Port Security, on network switches. It details various types of Layer 2 attacks, such as MAC flooding and DHCP starvation, that Port Security is designed to mitigate. The text explains the three methods for configuring secure MAC addresses—Static, Dynamic, and Sticky—and describes the three possible violation modes when security is breached: Shutdown, Protect, and Restrict. Furthermore, the guide includes a practical LAB exercise demonstrating how to enable and test these different configuration and violation modes using networking devices, including the use of errdisable recovery to automatically recover a port after a security violation.