The Cisco Catalyst 6500 Series Distributed Forwarding Card 3 (DFC3), including WS-F6700-DFC3A (DFC3A), WS-F6700-DFC3B (DFC3B), WS-F6700-DFC3BXL (DFC3BXL), is an optional daughter card for CEF720-based line cards such as WS-X6704-10GE, WS-X6724-SFP, WS-X6748-SFP, & WS-X6748-GE-TX. The DFC3 provides localized forwarding decisions for each line card & scales the aggregate system performance to reach up to 400 mpps. The new DFC3B & DFC3BXL offer enhancements to support Multiprotocol Label Switching (MPLS) & Access Control Entries (ACE) counters on the Cisco 6700 Series line cards. The DFC3BXL also has enhanced scalability to support one million IPv 4 routes & 256-KB Net Flow entries