The Cisco Distributed Forwarding Card 4 (DFC4) is a high-performance switching accelerator designed to enhance the capabilities of the Cisco Catalyst 6500 series switches. This module significantly improves data throughput by offloading packet switching tasks, consequently reducing the load on the system's supervisor engine. By carrying out these complex operations locally, the DFC ensures more efficient distribution of data and higher processing performance within the switch's architecture.
The DFC4 features a powerful forwarding engine that operates at an impressive up to 256 Gbps of local switching capacity. This robust capability makes it suitable for high-traffic networks, enabling smooth and reliable data flow even under heavy loads. It also provides optimisations for both IPv4 and IPv6 processing, ensuring comprehensive support for modern networking standards.
Additionally, the DFC4 offers advanced functionality in line with Cisco's modular switching approach by enabling the distributed architecture of Virtual Switching System (VSS) deployments. This card not only handles packet forwarding but also supports a wide range of features, including access control lists (ACLs), quality of service (QoS), and path-based routing, enhancing both security and performance in the network.
With built-in redundancy features, the Cisco DFC4 ensures high network reliability. The card is hot-swappable, meaning it can be replaced seamlessly without disrupting network operations, making it a crucial component for large-scale enterprise deployments. Compatibility with the existing infrastructure is also maintained, as the DFC4 supports a variety of line cards, enabling network operators to benefit from enhanced performance without overhauling their entire system.
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