The Cisco Catalyst 6500 Distributed Forwarding Daughter card-3A is a field-upgradable daughter card for the WS-X67xx interface modules. Designed expressly for use with Cisco IOS Software, this daughter card is compatible with the new Cisco Catalyst 6500 Series Supervisor Engine 720 and enables full local-distributed forwarding of packets up to 48 Mpps per interface card, with Cisco Catalyst 6500 Series system throughput of up to 400 Mpps. The DFC3A supports hardware-accelerated IPv6, generic routing encapsulation (GRE), Network Address Translation (NAT), egress policing, and more. This card is ideal for high-performance enterprise distribution-core, data center, and Metro Ethernet deployments.