A fundamental component of a corporate network is the LAN switching infrastructure, which connects users, applications, and communication systems with each other. Since 1995, Cisco Systems has been a leader in LAN switching innovation, from the introduction of the Catalyst 5000 series to the development of today's intelligent switch platforms. Cisco Catalyst LAN switches provide state-of-the-art intelligence and performance, supporting corporate goals through the protection, optimization, and scalability of the infrastructure.