C9300L-48P-4G-E Cisco Catalyst 9300L PoE+ 1000Base-X Ethernet Switch

Overview of Cisco Catalyst 9300L-48P-4G-E Managed Switch 

The Cisco Catalyst 9300L-48P-4G-E is a high-capacity enterprise-grade managed network switch engineered for modern campus, branch, and mid-sized enterprise infrastructures. Designed as part of the Catalyst 9300L Series, this model delivers a robust combination of Power over Ethernet Plus (PoE+), fixed Gigabit uplinks, advanced Layer 3 capabilities, and centralized manageability. It is optimized for environments that demand consistent performance, enhanced security, scalable expansion, and simplified network operations. This switch features a resilient hardware design that supports long-term deployment in business-critical networks. With a focus on reliability and scalability, the Catalyst 9300L-48P-4G-E is built to handle dense endpoint connectivity, IP-based devices, and bandwidth-intensive applications without compromising stability.

Key Identification Data

• Manufacturer: Cisco
• Product Series: Catalyst 9300L
• Part Number: C9300L-48P-4G-E
• Device Type: Managed Layer 3 Ethernet Switch

Physical Port Configuration

• 48 Gigabit Ethernet copper ports with PoE+ support
• 4 fixed 1 Gigabit SFP uplink interfaces
• Dedicated stacking capability for network expansion
• Non-shared SFP slots ensuring consistent uplink performance

PoE+ Use Cases

• VoIP phones and unified communication endpoints
• Wi-Fi 5 and Wi-Fi 6 access points
• IP surveillance and access control systems
• IoT devices deployed across smart offices

Supported Media Types

• Twisted pair cabling for copper connections
• Optical fiber for long-distance and high-reliability links

Key Layer 3 Advantages

• Improved traffic control between network segments
• Reduced reliance on external routing devices
• Enhanced scalability for growing organizations

Management Highlights

• Centralized configuration and policy enforcement
• Real-time monitoring and diagnostics
• Secure access control and network segmentation

Performance Characteristics

• Gigabit Ethernet access across all user ports
• Stable uplink bandwidth for aggregation traffic
• Optimized switching for enterprise workloads

Typical Applications

• Enterprise access layer switching
• Campus network edge deployments
• Branch office connectivity
• Unified communications and IoT integration

Outline of Cisco C9300L-48P-4G-E Managed Switch  

The Cisco C9300L-48P-4G-E is an advanced managed switch designed to meet the growing needs of modern enterprise networks. With 48 ports and 4 x Gigabit Ethernet SFP+ uplinks, this switch delivers exceptional performance, reliability, and scalability for organizations of all sizes. Engineered to handle high traffic volumes, the C9300L-48P-4G-E ensures seamless connectivity for critical applications while supporting Power over Ethernet (PoE) devices for optimal flexibility.

This model is part of Cisco's renowned Catalyst 9300 Series, recognized for its high-density, stackable switching capabilities, and robust security features. The C9300L-48P-4G-E combines cutting-edge technology with ease of deployment, making it a preferred choice for IT administrators aiming for maximum uptime and efficient network management. Its integration into enterprise environments provides a reliable foundation for future-proof network infrastructures.

High-Density Port Configuration for Enterprise Networks

Equipped with 48 full-featured ports, the Cisco C9300L-48P-4G-E is designed to support a high number of connected devices without compromising performance. Each port is optimized for high-speed data transfer, ensuring that bandwidth-intensive applications like video conferencing, cloud computing, and real-time analytics run smoothly. The addition of 4 x Gigabit Ethernet SFP+ uplinks enhances connectivity with other network switches, routers, or data center equipment, enabling seamless integration into complex network topologies.

This high-density configuration is particularly beneficial for organizations with growing device demands or multi-floor office environments. By providing a large number of ports in a single chassis, IT teams can reduce cabling complexity and centralize network management while maintaining high throughput and low latency. The Cisco C9300L-48P-4G-E allows for extensive scalability, supporting network expansion without the need for frequent hardware upgrades.

Power over Ethernet (PoE) Capabilities

The C9300L-48P-4G-E switch features advanced Power over Ethernet (PoE) support, delivering power directly through network cables to connected devices such as IP phones, access points, and surveillance cameras. This functionality eliminates the need for separate power supplies, streamlining installations and reducing infrastructure costs. PoE also enhances network flexibility, allowing devices to be positioned in locations where traditional power sources may be unavailable.

With robust PoE capabilities, the switch can handle multiple high-power devices simultaneously, ensuring uninterrupted connectivity across critical endpoints. This makes it ideal for enterprises implementing unified communications, wireless deployments, or smart office solutions. The switch's intelligent PoE management enables IT teams to prioritize power allocation, monitor consumption, and optimize energy efficiency across the network.

Advanced Security Features for Modern Networks

Security is a cornerstone of the Cisco C9300L-48P-4G-E, offering comprehensive protection against emerging threats. The switch incorporates Cisco’s TrustSec technology, which enforces role-based access control across the network. This ensures that users and devices are granted appropriate permissions based on their profile, reducing the risk of unauthorized access. Additionally, advanced features such as Secure Boot and MACsec encryption provide an extra layer of defense against firmware attacks and data breaches.

Network segmentation is simplified through VLAN support, allowing IT administrators to isolate sensitive departments or devices while maintaining centralized management. This level of control is crucial for organizations that handle confidential data, such as financial institutions, healthcare providers, and educational institutions. The C9300L-48P-4G-E’s security framework integrates seamlessly with Cisco Identity Services Engine (ISE) for centralized policy enforcement and real-time threat monitoring.

Layer 3 Switching and Routing Capabilities

The Cisco C9300L-48P-4G-E is more than a traditional Layer 2 switch; it supports full Layer 3 routing, enabling efficient traffic management within enterprise networks. Advanced routing protocols, including OSPF, EIGRP, and BGP, allow the switch to handle dynamic routing, ensuring optimal path selection and minimal network congestion. This functionality is especially beneficial for large-scale deployments, where multiple subnets and routing domains must coexist seamlessly.

By integrating Layer 3 capabilities, the switch reduces dependency on external routers for inter-VLAN routing, streamlining network architecture and enhancing overall performance. IT administrators can leverage policy-based routing and route summarization to optimize traffic flow, while advanced multicast routing ensures smooth delivery of audio and video streams across enterprise applications.

Stacking Flexibility with Cisco StackWise Technology

The C9300L-48P-4G-E supports Cisco StackWise technology, enabling multiple switches to operate as a single logical unit. This stacking capability provides enhanced redundancy, simplified management, and higher port density, making it ideal for growing enterprise networks. StackWise ensures that traffic is automatically rerouted in the event of a switch failure, minimizing downtime and maintaining business continuity.

Administrators benefit from simplified configuration and monitoring, as the entire stack can be managed through a single IP address. This reduces administrative overhead and accelerates network deployment. Additionally, StackWise provides scalability for organizations anticipating future growth, allowing seamless addition of switches without disrupting network operations.

Optimized Performance for Bandwidth-Intensive Applications

Performance optimization is a key strength of the Cisco C9300L-48P-4G-E. With advanced Quality of Service (QoS) capabilities, the switch prioritizes critical traffic such as voice, video, and real-time data streams. QoS policies can be configured to manage bandwidth allocation, reduce latency, and prevent network congestion, ensuring a smooth experience for users and applications alike.

High-performance forwarding and low-latency switching allow enterprises to deploy cloud services, virtualization platforms, and IoT devices without compromise. The switch’s hardware acceleration and intelligent buffering mechanisms maintain consistent throughput even under peak load conditions, making it a reliable choice for mission-critical environments. By supporting high-speed uplinks and stacking, the C9300L-48P-4G-E delivers predictable performance that scales with network demands.

Comprehensive Network Management Options

Administrators gain full control over network operations through Cisco DNA Center and Cisco Network Assistant. These management platforms provide centralized monitoring, automated configuration, and real-time troubleshooting capabilities. By leveraging these tools, IT teams can reduce operational complexity, quickly identify performance bottlenecks, and implement policy-driven network segmentation.

The C9300L-48P-4G-E also supports SNMP, syslog, and NetFlow, enabling integration with existing network management systems. Automated software updates and configuration backups ensure network consistency and reduce the risk of human error. This level of visibility and control enhances overall operational efficiency and supports proactive network maintenance strategies.

Scalability and Future-Proofing

The Cisco C9300L-48P-4G-E is designed with scalability and future readiness in mind. Its modular architecture allows for incremental network growth without extensive hardware replacement. As organizational needs evolve, additional switches can be stacked or uplink ports upgraded to accommodate increased traffic, ensuring that the network remains agile and adaptable.

Support for the latest software features and network protocols ensures compatibility with emerging technologies. Enterprises investing in this switch benefit from a long product lifecycle, reduced total cost of ownership, and the ability to adapt to changing business requirements. The C9300L-48P-4G-E’s combination of high port density, advanced features, and robust management tools makes it an ideal foundation for building resilient, scalable networks.

Integration with Cisco Ecosystem

Seamless integration with other Cisco products enhances the value of the C9300L-48P-4G-E within enterprise environments. The switch works harmoniously with Cisco routers, wireless access points, and security appliances to create a unified network infrastructure. Advanced analytics and telemetry from Cisco DNA Center provide actionable insights for network optimization, security enforcement, and capacity planning.

Integration with Cisco’s Software-Defined Access (SD-Access) framework allows for simplified policy enforcement, automated segmentation, and enhanced security across the network. Enterprises can implement end-to-end visibility and control, making it easier to manage complex multi-site deployments and improve user experiences across locations.

Deployment Scenarios and Applications

The C9300L-48P-4G-E is versatile, supporting a wide range of deployment scenarios. In corporate offices, it provides reliable connectivity for desktops, laptops, VoIP phones, and wireless access points. In campus environments, it serves as a distribution or access-layer switch, supporting large numbers of devices while enabling advanced security and segmentation. In data centers, its Layer 3 capabilities and stacking options ensure high performance and redundancy for critical applications.

Additionally, the switch supports smart building and IoT deployments, where connectivity for sensors, cameras, and automation devices is essential. Its PoE capabilities simplify the deployment of these devices without requiring additional power infrastructure, streamlining installation and management while maintaining network performance and security.

Reliability and High Availability Features

Reliability is a key attribute of the Cisco C9300L-48P-4G-E. Redundant power supplies, fan modules, and StackWise technology ensure continuous operation even in the event of hardware failure. Cisco’s IOS XE software provides stability and resiliency, enabling rapid failover and minimal downtime for business-critical services.

High availability features such as dual-image support, nonstop forwarding with stateful switchover, and hot-swappable components enhance operational continuity. Enterprises can maintain uninterrupted service for voice, video, and data traffic, meeting the demands of modern digital workplaces.

Advanced Features Supporting Digital Transformation

The Cisco C9300L-48P-4G-E supports advanced network features that enable digital transformation initiatives. Its ability to handle high-volume traffic, secure connectivity, and seamless integration with cloud-based applications supports modern business strategies. Enterprises can deploy unified communications, collaboration tools, and real-time analytics with confidence, knowing the network infrastructure can support evolving workloads.

With advanced telemetry, automation, and AI-driven analytics, IT teams gain actionable insights into network performance and user behavior. This enables proactive troubleshooting, capacity planning, and enhanced decision-making, making the Cisco C9300L-48P-4G-E a key component of intelligent, software-driven networks.