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The Cisco Catalyst 6500 series switch fabric modules (SFM), including the Switch Fabric Module 2 (WS-X6500-SFM2) and the Switch Fabric Module (WS-C6500-SFM), in combination with the Supervisor Engine 2, deliver an increase in available system bandwidth from the existing 32 Gbps to 256 Gbps. SFM is not supported on Supervisor Engine I-based systems. The Switch Fabric Module 2 and the Switch Fabric Module enable an architecture that allows 30 million packets per second (Mpps) of Cisco Express Forwarding-based central forwarding performance on Supervisor Engine 2 and up to 210 Mpps of distributed forwarding performance. The Distributed Feature Daughter Card (WS-F6K-DFC) is required to be installed on the line cards to deliver up to 210 Mpps of distributed forwarding.