The Cisco Catalyst 6500 Series Distributed Forwarding Card 3 (DFC3) is an optional daughter card for CEF720-based line cards. The DFC3 provides localized forwarding decisions for each line card and scales the aggregate system performance to reach up to 400 mpps. The DFC3BXL offers enhancements to support Multiprotocol Label Switching (MPLS) and Access Control Entries (ACE) counters on the Cisco 6700 Series line cards. It also has improved scalability to support one million IPv4 routes and 256-KB NetFlow entries.