The 6506-E Ethernet Switch is part of the Cisco Catalyst 6500 Series that deliver up to 2 terabits per second of system bandwidth capacity and 80 Gbps of per-slot bandwidth. In a system configured for VSS, this translates to a system capacity of 4 Tbps. The Cisco Catalyst 6500 Enhanced Series Chassis will be capable of delivering up to 180 Gbps of per-slot bandwidth with a system capacity of up to 4 terabits per second. A system configured for VSS will be capable of delivering up to 8 Tbps of system bandwidth.