C6800-48P-SFP-XL Cisco Catalyst Fiber Module Gigabit Ethernet

Cisco Catalyst Fiber Module Gigabit Ethernet

The Cisco C6800-48P-SFP-XL Catalyst Fiber Module is a high-performance expansion solution designed for enterprise-grade networking. With 48 SFP ports, advanced Gigabit Ethernet support, and compliance with multiple IEEE standards, this Cisco module delivers reliable, scalable, and efficient connectivity for modern infrastructures.

General Information

• Manufacturer: Cisco
• Part Number: C6800-48P-SFP-XL
• Device Category: Expansion Module

Technical Specifications

• Type: Plug-in Module
• Ports: 48 × SFP (mini-GBIC)
• Connectivity Technology: Wired

Performance

• Forwarding Performance: 60 Mpps
• Cabling Type: Ethernet 1000BASE-X
• Data Link Protocol: Gigabit Ethernet
• Data Transfer Rate: 40 Gbps

Compliant Standards

• IEEE 802.3z
• IEEE 802.1d
• IEEE 802.1q
• IEEE 802.3ab
• IEEE 802.1p
• IEEE 802.3x
• IEEE 802.3ad (LACP)
• IEEE 802.1w
• IEEE 802.1s

Power Specifications

• Operational Power Consumption: 339.44 Watts

Key Advantages

• Provides 48 SFP ports for flexible expansion.
• Supports Gigabit Ethernet with 40 Gbps throughput.
• Delivers 60 Mpps forwarding performance for enterprise workloads.
• Complies with multiple IEEE networking standards for reliability.
• Hot-pluggable design for easy installation and maintenance.

Cisco C6800-48P-SFP-XL Catalyst 6800 Series Module Overview

The Cisco C6800-48P-SFP-XL Catalyst 6800 Series Gigabit Ethernet Fiber Module with DFC4XL Expansion is engineered as a high-density switching solution designed for advanced enterprise campus networks, data center aggregation layers, and service provider environments requiring resilient fiber-based connectivity. As part of the broader switching ecosystem developed by, this module integrates seamlessly into Catalyst 6800 chassis-based platforms, extending switching capacity with a strong emphasis on performance, scalability, and distributed forwarding intelligence.

This module is widely recognized for its combination of forty-eight SFP (mini-GBIC) fiber ports and the integration of the DFC4XL (Distributed Forwarding Card) expansion capability, which significantly enhances packet forwarding efficiency. The architecture is designed to minimize latency while maximizing throughput, making it suitable for high-demand networking environments where uninterrupted traffic flow is essential.

High-Density Fiber Port Design and Network Expansion Capability

The Cisco C6800-48P-SFP-XL module provides forty-eight Small Form-Factor Pluggable (SFP) interfaces that support a broad range of fiber optic transceivers. This flexibility allows network engineers to deploy multiple optical media types, including short-reach, long-reach, and extended-reach fiber links depending on enterprise design requirements. The high port density ensures optimal utilization of chassis space while reducing the need for additional line cards, thereby lowering infrastructure overhead.

The module's SFP-based design enables organizations to tailor their network architecture according to bandwidth demand and distance requirements. This adaptability is particularly valuable in large campus environments where inter-building connectivity and backbone aggregation require a combination of scalability and reliability. Each port is engineered to maintain stable Gigabit Ethernet performance, ensuring consistent data transmission even under heavy network loads.

Scalable Fiber Integration for Enterprise Networks

Within modern enterprise environments, scalability is a fundamental requirement. The Cisco C6800-48P-SFP-XL module addresses this need by offering flexible expansion through modular fiber integration. The use of SFP interfaces allows organizations to upgrade or modify optical transceivers without replacing the entire module, reducing operational costs and simplifying lifecycle management.

This design philosophy supports gradual network evolution, where additional bandwidth can be introduced incrementally as demand increases. Enterprises benefit from reduced downtime and enhanced adaptability when integrating new applications, cloud services, and high-bandwidth workloads.

Operational Efficiency in Fiber-Based Architectures

The fiber-centric architecture of this module ensures high resistance to electromagnetic interference, making it suitable for deployment in environments with significant electrical noise. This improves signal integrity and reduces packet loss, which is essential for latency-sensitive applications such as virtualization, real-time analytics, and unified communications.

DFC4XL Distributed Forwarding Architecture and Performance Optimization

A defining feature of the Cisco C6800-48P-SFP-XL Catalyst module is the integration of DFC4XL (Distributed Forwarding Card 4XL) technology. This enhancement offloads packet forwarding decisions from the central switching engine to the line card itself, resulting in significantly improved throughput and reduced processing bottlenecks.

By distributing forwarding intelligence directly to the module, the system reduces reliance on centralized processing resources, thereby improving scalability and ensuring predictable performance under high traffic conditions. This architecture is particularly beneficial in environments where large volumes of east-west traffic are common.

Enhanced Packet Processing and Low-Latency Switching

The DFC4XL architecture is designed to accelerate packet processing by enabling hardware-based forwarding decisions at the line card level. This reduces latency and ensures that data packets are handled efficiently without unnecessary traversal through central processing units.

Low-latency switching is critical in environments such as financial institutions, enterprise data centers, and service provider backbones where even microsecond delays can impact application performance. The module’s distributed architecture ensures deterministic forwarding behavior across all forty-eight fiber ports.

Load Distribution and Traffic Engineering Efficiency

Traffic distribution across the module is optimized through intelligent hardware-based algorithms that balance load efficiently. This ensures that no single forwarding path becomes a bottleneck, allowing sustained high-throughput performance even during peak utilization periods.

The system also supports advanced traffic engineering principles, enabling administrators to design resilient network topologies that maximize redundancy while maintaining efficient resource utilization.

Hardware-Level Acceleration Advantages

Hardware acceleration provided by the DFC4XL module ensures that critical switching operations such as MAC address lookup, ACL enforcement, and routing table processing are executed at wire speed. This eliminates software-based delays and enhances overall system responsiveness.

Enterprise-Class Gigabit Ethernet Fiber Connectivity

The Cisco C6800-48P-SFP-XL module is optimized for Gigabit Ethernet fiber connectivity, providing consistent and reliable data transmission across all forty-eight ports. This level of connectivity is essential for enterprise backbone networks that require stable and predictable performance under varying load conditions.

Fiber connectivity offers significant advantages over copper-based solutions, including extended transmission distance, higher bandwidth capacity, and improved immunity to electromagnetic interference. These characteristics make the module ideal for mission-critical deployments where reliability is paramount.

Multi-Mode and Single-Mode Fiber Compatibility

The SFP interfaces on this module support both multi-mode and single-mode fiber transceivers, allowing organizations to deploy hybrid optical infrastructures. Multi-mode fiber is typically used for shorter distances within campus environments, while single-mode fiber enables long-distance connectivity between geographically separated network nodes.

This dual compatibility ensures that the module can be integrated into a wide variety of network designs without requiring specialized hardware modifications. It enhances flexibility in both new deployments and legacy network upgrades.

Optimized Signal Integrity and Transmission Stability

Signal integrity is maintained through advanced optical design and high-quality transceiver compatibility. The module ensures minimal signal degradation over long distances, which is essential for maintaining consistent throughput and reducing retransmission overhead.

This stability is particularly important in environments where large-scale data transfers and continuous streaming applications are common.

High-Availability Fiber Infrastructure Support

The module supports redundant fiber paths, enabling network administrators to design highly available infrastructures that can withstand link failures without disrupting service continuity. This redundancy is essential for enterprise-grade deployments requiring 24/7 uptime.

Integration Within Catalyst 6800 Chassis-Based Systems

As part of the Catalyst 6800 series ecosystem, the Cisco C6800-48P-SFP-XL module is designed to integrate seamlessly into modular chassis-based switching platforms. This integration enables centralized management, simplified scalability, and unified control over network operations.

The chassis-based architecture allows multiple line cards to operate in conjunction, creating a high-capacity switching fabric capable of handling massive data throughput across enterprise networks.

Seamless Module Synchronization and System Coordination

The module synchronizes with the switching fabric of the chassis to ensure consistent forwarding behavior across all installed line cards. This coordination enables efficient load balancing and ensures that network traffic is distributed evenly across available resources.

Such synchronization is critical for maintaining predictable performance in large-scale deployments where multiple services operate simultaneously.

Unified Management and Configuration Control

Network administrators benefit from centralized management capabilities that allow configuration, monitoring, and troubleshooting from a single control interface. This reduces operational complexity and enhances visibility across the entire switching infrastructure.

Unified management also supports automation frameworks that streamline repetitive tasks and improve operational efficiency.

Chassis-Level Redundancy and Fault Tolerance

The modular design supports redundancy at both the line card and chassis level, ensuring continuous operation even in the event of hardware failure. This fault-tolerant design is essential for enterprise networks that demand uninterrupted service availability.

Advanced Switching Capabilities and Network Intelligence

The Cisco C6800-48P-SFP-XL module incorporates advanced switching capabilities that enhance network intelligence and optimize data flow across enterprise infrastructures. These capabilities include intelligent packet classification, high-speed routing decisions, and adaptive traffic handling mechanisms.

By leveraging hardware-based processing and distributed forwarding, the module ensures that complex network operations are executed efficiently without compromising performance.

Intelligent Packet Classification and Processing

Packet classification is handled at the hardware level, enabling rapid identification of traffic types and prioritization based on predefined policies. This ensures that critical applications receive the necessary bandwidth and priority within the network.

Such intelligent processing is vital in environments where multiple application types coexist, including voice, video, and data services.

Quality of Service and Traffic Prioritization Mechanisms

Quality of Service (QoS) mechanisms are implemented to ensure that latency-sensitive applications receive prioritized handling. This includes voice-over-IP traffic, video conferencing streams, and real-time analytics workloads.

The system dynamically manages bandwidth allocation to maintain optimal performance across all active services.

Adaptive Network Optimization Techniques

Adaptive optimization techniques allow the module to adjust to changing network conditions in real time. This includes dynamic load balancing and congestion management strategies that ensure efficient resource utilization.

Deployment Scenarios and Enterprise Use Cases

The Cisco C6800-48P-SFP-XL Catalyst module is suitable for a wide range of deployment scenarios, including enterprise campus networks, data center aggregation layers, and service provider edge infrastructures. Its high port density and advanced forwarding capabilities make it ideal for environments requiring both scalability and reliability.

In campus networks, the module serves as a backbone connectivity solution, interconnecting multiple buildings and network segments with high-speed fiber links. In data center environments, it functions as an aggregation layer component, consolidating traffic from multiple access switches.

Enterprise Campus Network Integration

Within enterprise campuses, the module provides reliable interconnectivity between departmental networks, server farms, and internet gateways. Its fiber-based architecture ensures long-distance connectivity without performance degradation.

Data Center Aggregation Layer Efficiency

In data centers, the module plays a crucial role in aggregating traffic from multiple access layers, ensuring efficient routing and load distribution across core switching infrastructure.

Service Provider Edge Deployment Utility

Service providers utilize the module to manage high-density customer traffic at the network edge, ensuring efficient data handling and scalable bandwidth provisioning.