The Catalyst 6500 Series sets the new standard for IP communications and application delivery in enterprise campus and service provider networks by maximizing user productivity and enhancing operational control while providing unprecedented investment protection. As Cisco's premier intelligent multilayer modular switch, the Catalyst 6500 Series delivers secure, converged services, end-to-end, from the wiring closet to the core, to the data center, to the WAN edge.The 9-slot Catalyst 6509 chassis provides intermediate port densities, ideal for many wiring closet and core network deployments. The Catalyst 6509 provides maximum uptime with redundancy and rapid 2-3 second failover across supervisor engine.