C9400-LC-48T Cisco Catalyst 9400 48 Ports Ethernet Switch

Cisco C9400-LC-48T 48-Port Gigabit Line Card Overview

The Cisco C9400-LC-48T is a high-performance 48-port 1G RJ-45 switch line card designed for the Cisco Catalyst 9400 Series chassis. It delivers scalable, reliable, and secure wired access for enterprise campus and branch network environments requiring stable Gigabit Ethernet connectivity.

Key Product Information of Cisco C9400-LC-48T

• Manufacturer: Cisco Systems
• Part Number: C9400-LC-48T
• Product Category: Modular Switch Line Card
• Series: Catalyst 9400 Platform

Advanced Technical Specifications

Port and Performance Features

• Supports 48 Gigabit Ethernet RJ-45 ports
• Non-blocking switching performance for uninterrupted data flow
• Optimized for high-speed enterprise networking environments

Supported Software Features

• Cisco IOS XE 16.6.1 or higher compatibility
• Advanced switching and routing capabilities
• Seamless integration with Catalyst 9400 chassis systems

Network Efficiency and Security Capabilities

Eco-Friendly Features

• IEEE 802.3az Energy Efficient Ethernet support
• Automatic power adjustment based on traffic load
• Reduced operational energy costs in enterprise deployments

Security Highlights

• Hardware-accelerated MACsec-256 encryption
• Secure Layer 2 communication protection
• Enhanced data integrity and confidentiality

Performance Optimization and Scalability

Data Handling Capabilities

• Jumbo frame support up to 9216 bytes
• Optimized for large file transfers and data center workloads
• Reduced CPU overhead for network devices

Typical Applications

• Campus network infrastructure
• Branch office connectivity solutions
• Enterprise data access layers
• High-performance wired user environments

Deployment Advantages

Operational Benefits

• Easy integration into existing Catalyst 9400 setups
• Scalable architecture for growing business networks
• Reduced downtime during upgrades or expansion

Reliability Features

• Carrier-class switching performance
• Stable Gigabit Ethernet connections
• Designed for continuous 24/7 operation environments

Cisco C9400-LC-48T Catalyst 9400 48x 1GB Switch Line Card

The Cisco C9400-LC-48T Catalyst 9400 48x 1GB RJ-45 Switch Line Card is a high-density enterprise-grade switching module designed for modular campus core and distribution deployments within the Cisco Catalyst 9400 Series ecosystem. Built to deliver robust wired connectivity, predictable performance, and scalable network expansion, this line card plays a critical role in modern enterprise network architectures that demand flexibility, resiliency, and high port density in a modular chassis environment.

As part of the Cisco Catalyst 9400 platform, this 48-port 1 Gigabit Ethernet RJ-45 line card is engineered for organizations that require reliable copper-based connectivity for end devices such as access points, IP phones, desktops, printers, and IoT endpoints. The C9400-LC-48T is optimized for high availability campus designs, making it suitable for enterprise headquarters, large branch environments, and campus aggregation layers where performance consistency and uptime are essential.

Enterprise Campus Switching Architecture

Modular Chassis Design and Scalability

The Cisco Catalyst 9400 Series is built around a modular architecture that enables organizations to scale network capacity based on evolving business requirements. The C9400-LC-48T line card integrates seamlessly into this architecture, allowing network administrators to expand port density without replacing the entire chassis. This modularity ensures long-term investment protection and reduces operational disruption during upgrades or expansions.

Within a Cisco Catalyst 9400 chassis, multiple line cards can be deployed to increase connectivity across campus networks. The 48-port density of the C9400-LC-48T makes it especially valuable for high-user-density environments where space optimization and structured cabling efficiency are key design considerations.

High-Density Copper Connectivity

The 48 x 1 Gigabit RJ-45 ports on the Cisco C9400-LC-48T are designed to support traditional copper Ethernet infrastructure. This ensures compatibility with a wide range of existing enterprise devices while maintaining consistent throughput performance. The copper-based interface allows organizations to leverage existing cabling systems, reducing migration complexity and minimizing upgrade costs in enterprise campus environments.

Performance Consistency Across Endpoints

Each port on the line card is engineered to deliver stable 1 Gbps connectivity, ensuring predictable data transmission for latency-sensitive applications such as VoIP, video conferencing, and enterprise cloud access. The consistent performance across all 48 ports supports balanced network utilization and reduces congestion in high-traffic environments.

Advanced Network Integration Capabilities

Seamless Cisco DNA Center Integration

The Cisco C9400-LC-48T line card is fully compatible with Cisco DNA Center, enabling centralized network automation, policy enforcement, and assurance capabilities. Through software-defined networking principles, IT teams can manage large-scale deployments with greater efficiency, reducing manual configuration tasks and improving operational consistency across the enterprise infrastructure.

Integration with Cisco DNA Center allows organizations to implement intent-based networking strategies, where network behavior is aligned with business intent rather than manual device-level configuration. This enhances agility and simplifies ongoing network management.

Support for Software-Defined Access (SD-Access)

The line card plays a key role in Cisco SD-Access deployments, which provide segmentation, automation, and policy-based networking. By supporting fabric-enabled architectures, the C9400-LC-48T helps organizations implement secure access policies across wired endpoints without complex manual VLAN configurations.

Policy Enforcement and Segmentation

With SD-Access, network administrators can enforce granular security policies at the device level. The C9400-LC-48T ensures that each connected endpoint adheres to defined access rules, improving overall network security posture and reducing lateral movement risks within enterprise environments.

Security and Enterprise-Grade Protection

Integrated Security Features

Security is a fundamental aspect of the Cisco Catalyst 9400 architecture. The C9400-LC-48T supports advanced security mechanisms designed to protect enterprise networks from internal and external threats. These include port-level security controls, identity-based access, and integration with Cisco TrustSec technologies.

Network Access Control Compatibility

The line card works in conjunction with network access control systems to verify and authenticate devices before granting access to network resources. This ensures that only authorized endpoints can connect to enterprise systems, reducing the risk of unauthorized access and potential security breaches.

High Availability and Network Reliability

Redundant Architecture Support

The Cisco Catalyst 9400 platform is designed for high availability, and the C9400-LC-48T line card benefits from redundant system capabilities within the chassis. This includes support for redundant supervisors and power supplies, ensuring continuous network operation even in the event of hardware failures.

Minimized Downtime in Enterprise Environments

Downtime can significantly impact enterprise productivity, especially in mission-critical environments. The line card’s integration into a resilient chassis architecture ensures that network services remain operational, reducing the likelihood of disruptions and maintaining business continuity.

Hitless Failover Capabilities

In conjunction with the Catalyst 9400 system design, the line card supports hitless failover mechanisms, allowing seamless transition between redundant components without affecting active network sessions. This capability is essential for environments requiring uninterrupted connectivity.

Deployment Scenarios and Use Cases

Enterprise Campus Networks

The C9400-LC-48T is widely deployed in enterprise campus environments where large numbers of wired endpoints must be supported efficiently. Its high port density makes it ideal for office floors, departmental networks, and shared workspace environments where structured connectivity is required.

Corporate Headquarters Integration

In corporate headquarters environments, the line card supports core distribution switching, enabling seamless connectivity between access layers and core infrastructure. This ensures reliable communication across departments and enterprise applications.

Educational Institutions

Universities and colleges benefit from the scalability of the C9400-LC-48T, particularly in lecture halls, administrative buildings, and student facilities. The ability to support large numbers of wired devices ensures stable access to academic resources and digital learning platforms.

Healthcare and Critical Infrastructure

Healthcare environments require reliable and secure network connectivity for medical devices, administrative systems, and patient data management platforms. The line card’s stability and security features make it suitable for hospitals and healthcare campuses where uptime is critical.

Performance Optimization and Network Efficiency

Traffic Management and QoS Support

The Cisco C9400-LC-48T supports advanced Quality of Service mechanisms that prioritize critical traffic types such as voice, video, and real-time applications. This ensures that essential communications maintain performance even under heavy network load conditions.

Latency-Sensitive Application Handling

Applications that require low latency, such as collaboration tools and real-time monitoring systems, benefit from optimized traffic handling within the Catalyst 9400 architecture. The line card ensures stable performance by efficiently distributing network load across available ports.

Bandwidth Utilization Efficiency

By supporting high-density 1 Gbps connections, the line card ensures efficient bandwidth utilization across enterprise endpoints. This reduces network bottlenecks and enhances overall system responsiveness.

Hardware Design and Engineering Excellence

Robust Industrial Design

The Cisco C9400-LC-48T is engineered with enterprise durability in mind, ensuring consistent performance in demanding data center and campus environments. Its hardware design aligns with Cisco’s standards for reliability and long-term operational stability.

Thermal Management and Cooling Efficiency

Effective thermal design ensures that the line card maintains optimal operating temperatures even under high utilization. This contributes to system longevity and reduces the risk of performance degradation due to overheating.

Energy Efficiency Considerations

Energy-efficient design principles are integrated into the line card architecture, helping organizations reduce operational costs while maintaining high performance. Efficient power usage also contributes to sustainable IT infrastructure development.

Network Management and Operational Simplicity

Centralized Administration

The Cisco Catalyst 9400 platform supports centralized management through Cisco network management tools, enabling administrators to configure, monitor, and optimize network performance from a unified interface. This reduces operational complexity and improves efficiency.

Automated Configuration Capabilities

Automation features reduce the need for manual intervention in routine configuration tasks. This ensures consistency across network deployments and minimizes human error in large-scale environments.

Compatibility and Ecosystem Integration

Seamless Integration with Catalyst 9400 Chassis

The C9400-LC-48T is specifically designed for compatibility with Cisco Catalyst 9400 Series chassis, ensuring optimal performance and stability when deployed within supported hardware environments.

Interoperability with Cisco Networking Solutions

The line card integrates with a wide range of Cisco networking technologies, including routing, switching, security, and automation solutions. This ensures a cohesive network ecosystem that supports enterprise digital transformation initiatives.

Scalable Network Expansion

Organizations can scale their network infrastructure incrementally by adding additional line cards as demand increases. This modular scalability makes the C9400-LC-48T a future-ready solution for evolving enterprise requirements.