Cisco WS-C6509-E WS-C6509-E Catalyst 6500 Enhanced 9-slot chassis 15RU: Catalyst 6500 Enhanced 9-slot chassis, 15RU Overview The 9-slot Cisco Catalyst 6509-E Switch provides high port densities that are ideal for many wiring closet, distribution, and core network as well as data center deployments with exceptional functionality and flexibility. Supervisor engine redundancy and power redundancy supporting deliver the low latency and high scalability network experience to ensure superior reliability for edging or core network. Any two Cisco Catalyst 6500E series Switches with Supervisor Engine 720-3C/720- 3CXL/S2T-10G/S2T-10G-XL can be pooled together into a VSS.