The Cisco Distributed Forwarding Card 4XL (DFC4XL), part number WS-F6K-DFC4-AXL=, is a switching accelerator designed to enhance the performance of high-end Catalyst 6500 series switches. This module significantly boosts system capabilities by offloading packet forwarding tasks from the main CPU, improving routing efficiency across various protocols.
This DFC supports Layer 2, Layer 3, and multicast routing, which means it can handle a wide variety of traffic types. The 4XL variant can manage up to 256,000 hardware-based forwarding entries, making it suitable for high-throughput environments with substantial traffic demands. It is designed for compatibility with Supervisor Engines like the Sup2T, ensuring seamless operation and higher port densities on the switch.
Equipped with a local switching accelerator, this card also excels in distributed forwarding operations, reducing latency and improving scalability within a large network infrastructure. By distributing these tasks at the line card level, it offloads network processing loads, allowing the switch to handle traffic more efficiently without bottlenecking the main processing unit.
The WS-F6K-DFC4-AXL= is highly reliable and offers system-level redundancy when coupled with additional supervisor engines or line cards. It also enhances the switch's overall resiliency, making it ideal for mission-critical enterprise networks.
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