C9300L-48P-4G-E Cisco Managed Switch, 48 Ports, 4 x Gigabit Ethernet Uplink

High-Performance Cisco Catalyst 9300L-48P-4G-E Switch

The Cisco Catalyst 9300L-48P-4G-E is a powerful, enterprise-grade network switch designed to deliver high-speed connectivity and enhanced security for modern network infrastructures. Engineered with 48 Gigabit Ethernet ports and 4 fixed 1G SFP uplinks, this switch provides reliable, scalable, and energy-efficient network performance.

General Specification

• Manufacturer: Cisco
• Part Number: C9300L-48P-4G-E
• Product Line: Catalyst 9300
• Product Type: Ethernet Switch

Technical Details

• Total Ports: 48 Gigabit Ethernet PoE+
• Uplink Availability: 4 x Gigabit Ethernet Uplinks
• Modular Capability: Yes, designed for flexibility
• Stack Port: Supports stacking for enhanced scalability

Advanced Performance Features

• Supported Media Types: Twisted Pair, Optical Fiber
• Ethernet Technology: Gigabit Ethernet for fast and reliable data transmission
• Network Standards: 1000Base-T, 1000Base-X for high-speed connectivity

Expansion and Upgrade Options

• Expansion Slots: 4 total slots for growth
• Slot Type: SFP (mini-GBIC) slots for flexible networking
• Shared SFP Slots: No shared slots, offering dedicated expansion opportunities
• Number of SFP Slots: 4 SFP slots for easy fiber optic expansion

Layer and Manageability

• Layer Support: Layer 3 for advanced routing features
• Manageable: Yes, supporting remote and local management

Power Supply and Redundancy

• Primary Power Source: Power Supply Unit (PSU)
• Redundant Power Supply: Yes, ensuring continuous uptime with redundancy support

Overview of Cisco 48 Ports Enterprise-Grade Access Switch 

The Cisco C9300L-48P-4G-E 48 Ports and 4 x Gigabit Ethernet Uplink SFP+ Managed Switch belongs to a purpose-built access-layer switching family engineered to meet modern enterprise networking demands. This category is designed for organizations requiring consistent performance, advanced security, scalable power delivery, and centralized management. Positioned within Cisco’s Catalyst 9300L lineup, this switch category focuses on reliability and operational efficiency while maintaining compatibility with next-generation applications, cloud-managed environments, and software-defined networking strategies.

Access-layer switching plays a critical role in enterprise infrastructure, serving as the direct connection point for end-user devices, IP phones, wireless access points, surveillance systems, and IoT endpoints. The Cisco C9300L-48P-4G-E category emphasizes stable throughput, predictable latency, and intelligent traffic handling, ensuring that connected devices experience uninterrupted connectivity. With its fixed-configuration design, this category simplifies deployment while retaining enterprise-class capabilities traditionally found in modular systems.

Optimized Fixed Configuration Design

The fixed configuration nature of the Cisco C9300L-48P-4G-E category ensures streamlined installation and predictable performance characteristics. Unlike modular platforms that require additional components, this category delivers an integrated solution where switching capacity, power delivery, and uplink connectivity are pre-engineered for balance and efficiency. This approach reduces procurement complexity and shortens deployment timelines, making it ideal for branch offices, campuses, and distributed enterprise environments.

The 48-port layout supports dense endpoint connectivity without sacrificing performance. Each port operates as part of a unified switching fabric that maintains consistent forwarding behavior even during peak usage periods. The inclusion of dedicated uplink interfaces ensures traffic aggregation toward distribution or core layers occurs without congestion, enabling seamless integration into hierarchical network designs.

Power over Ethernet Capabilities and Device Support

This switch category is defined by its Power over Ethernet functionality, enabling simultaneous data and power delivery over standard Ethernet cabling. The Cisco C9300L-48P-4G-E is engineered to support a wide range of powered devices, including VoIP handsets, wireless access points, video surveillance cameras, and smart building components. Centralized power management reduces the need for external power adapters, streamlining cabling and improving overall infrastructure efficiency.

Consistent Power Allocation and Efficiency

Within this category, power distribution is intelligently managed to ensure each connected device receives the required wattage without over-provisioning. Advanced power negotiation protocols allow dynamic adjustment based on device needs, improving energy efficiency and reducing operational costs. This design is especially beneficial in environments where device density and power requirements fluctuate throughout the day.

The ability to monitor and manage power consumption at the port level allows network administrators to maintain visibility and control. This category supports proactive power budgeting, ensuring critical devices remain operational even during power constraints. Such features enhance reliability for mission-critical applications that depend on uninterrupted connectivity.

Uplink Connectivity and Network Integration

The Cisco C9300L-48P-4G-E category incorporates multiple Gigabit Ethernet uplink interfaces designed to provide high-speed connections to aggregation or core switches. These uplinks enable efficient traffic flow from the access layer to higher network tiers, supporting data-intensive applications, real-time collaboration tools, and cloud-based services.

Flexible Fiber Connectivity Options

The uplink architecture supports fiber-based connectivity, allowing organizations to extend network reach across large campuses or between buildings. Fiber uplinks enhance signal integrity and reduce susceptibility to electromagnetic interference, making this category suitable for industrial environments and densely populated office spaces alike.

By offering standardized uplink interfaces, this category ensures compatibility with a wide range of Cisco and third-party networking equipment. This interoperability simplifies network expansion and allows organizations to adapt their infrastructure without extensive redesigns.

Advanced Layer 2 and Layer 3 Switching Features

The Cisco C9300L-48P-4G-E category supports comprehensive Layer 2 switching features that enable efficient traffic segmentation, loop prevention, and broadcast control. Technologies such as VLAN support, spanning tree enhancements, and link aggregation are integral to maintaining network stability and performance.

Integrated Layer 3 Routing Capabilities

Beyond traditional access-layer switching, this category incorporates Layer 3 routing functions that allow inter-VLAN communication and localized routing decisions. This capability reduces reliance on upstream devices, minimizes latency, and enhances overall network responsiveness. The ability to perform routing at the access layer is particularly advantageous in large campus deployments where scalability and performance are paramount.

Support for dynamic routing protocols ensures that networks can adapt to topology changes and maintain optimal traffic paths. This category enables simplified network architectures by combining switching and routing functions within a single platform.

Software-Defined Networking and Automation

The Cisco C9300L-48P-4G-E category is designed to align with software-defined networking principles, enabling centralized control, automation, and programmability. This approach allows organizations to manage complex networks with greater efficiency and agility.

Centralized Management and Visibility

Integration with Cisco management platforms provides a unified view of network performance, configuration, and health. Administrators can deploy changes consistently across multiple switches, reducing configuration errors and operational overhead. Real-time monitoring capabilities enable proactive issue resolution and performance optimization.

Automation features within this category support zero-touch provisioning and policy-based configuration. These capabilities accelerate deployment and ensure consistency across distributed environments, making it easier to scale network operations as organizational needs evolve.

High Availability and Resilience

Reliability is a core focus of the Cisco C9300L-48P-4G-E category. Designed for continuous operation, this switch category incorporates features that minimize downtime and maintain service continuity during maintenance or unexpected failures.

Redundancy and Fault Tolerance Mechanisms

Support for link aggregation and fast failover technologies ensures that network connectivity is maintained even if individual links or components experience issues. These mechanisms allow traffic to be rerouted dynamically, preserving application performance and user experience.

Advanced monitoring and diagnostics provide insights into hardware and software health, enabling administrators to identify and address potential issues before they impact operations. This proactive approach contributes to long-term network stability and reliability.

Scalability for Growing Network Demands

The Cisco C9300L-48P-4G-E category is engineered to support organizational growth and evolving technology requirements. Its scalable architecture accommodates increasing numbers of connected devices, higher traffic volumes, and emerging applications without compromising performance.

Support for Modern Workplace and IoT Deployments

As workplaces become more connected and IoT adoption accelerates, access-layer switches must handle diverse traffic patterns and device types. This category is optimized to support wireless infrastructure expansion, smart building systems, and real-time communication tools, ensuring seamless connectivity across the enterprise.

The ability to integrate with cloud services and hybrid environments further enhances scalability. Organizations can extend their networks beyond traditional boundaries while maintaining consistent policies and performance standards.

Use Case Alignment Across Industries

The Cisco C9300L-48P-4G-E category is adaptable to a wide range of industry verticals, including education, healthcare, retail, manufacturing, and corporate enterprises. Its combination of performance, security, and manageability makes it suitable for environments with varying regulatory requirements and operational challenges.

Enterprise, Campus, and Branch Deployments

In campus environments, this category supports high-density user access and seamless mobility. In branch offices, it delivers enterprise-grade capabilities within a compact and efficient form factor. Across all deployment scenarios, the consistent feature set simplifies network design and management.

The versatility of this category enables organizations to standardize on a single access-layer platform while addressing diverse connectivity needs. This standardization improves operational consistency and reduces training and support costs.