C9300L-48P-4G-A Cisco Catalyst C9300L PoE+ Managed Switch

Outline of Cisco Catalyst Enterprise-Grade L3 Switch   

The Cisco Catalyst C9300L-48P-4G-A is engineered to support modern enterprise networks that demand high performance, scalability, and intelligent traffic handling. As part of the Catalyst 9300 Series, this managed Ethernet switch delivers robust Layer 3 functionality, enabling efficient routing, segmentation, and policy-based network control across growing infrastructures.

Optimized Port Density for High-Demand Environments

Equipped with forty-eight Gigabit Ethernet ports supporting Power over Ethernet Plus (PoE+), this switch is designed to power and connect a wide range of network devices. From IP phones and wireless access points to security cameras and IoT endpoints, the switch reduces cabling complexity while maintaining reliable power delivery.

Product Identification Details

• Manufacturer: Cisco Systems, Inc.
• Product Line: Catalyst
• Product Series: 9300
• Model Number: C9300L-48P-4G-A
• Product Type: Managed Ethernet Switch

Key Port Configuration Highlights

• 48 x 10/100/1000 Mbps PoE+ RJ-45 ports for data and power transmission
• 4 x dedicated 1 Gigabit SFP uplink interfaces for fiber connectivity
• Non-shared SFP slots ensuring consistent uplink performance
• Support for both twisted-pair copper and optical fiber media

Expansion and Modularity Features

• Total of four SFP (mini-GBIC) expansion slots
• Modular architecture to support future upgrades
• Stacking capability for simplified management and scalability

Supported Networking Technologies

• Gigabit Ethernet for high-speed data transfer
• 1000Base-T for copper-based connections
• 1000Base-X for fiber-optic communication

Benefits of Layer 3 Support

• Enhanced inter-VLAN routing
• Improved network segmentation
• Reduced latency in large-scale deployments

Power and Reliability Features

• Integrated power supply for stable operation
• Redundant power supply support for high availability
• PoE+ capability to power connected devices efficiently

Advantages of Switch Stacking

• Centralized management of multiple switches
• Increased bandwidth and resilience
• Simplified network growth without added complexity

Typical Deployment Scenarios

• Corporate access layer switching
• Campus network edge connectivity
• IP telephony and wireless infrastructure support
• Secure and scalable enterprise LAN environments 

Enterprise-Class Access Layer Switching Architecture

The Cisco C9300L-48P-4G-A Catalyst C9300L 48 Ports PoE+ Managed Switch is designed as a high-performance access layer solution that aligns with modern enterprise networking requirements. It integrates seamlessly into scalable campus architectures where reliability, automation, and consistent policy enforcement are essential. Built on the proven Catalyst 9000 family foundation, this model delivers predictable performance and long-term operational stability for organizations managing dense device environments.

At the core of this switch is Cisco’s enterprise-grade hardware platform, optimized for continuous operation in demanding network conditions. It supports advanced Layer 2 and Layer 3 capabilities that allow network administrators to design flexible topologies while maintaining simplified management workflows. The switch functions as a foundational component for access layer deployments, connecting end-user devices, wireless access points, IP phones, and IoT endpoints with dependable throughput and intelligent traffic handling.

Optimized for Scalable Campus Networks

Campus networks require access switches that can scale horizontally without introducing complexity or performance bottlenecks. The Cisco C9300L-48P-4G-A is purpose-built to meet these requirements by offering a balanced combination of port density, uplink flexibility, and enterprise-class feature sets. It enables network teams to standardize deployments across multiple locations while maintaining centralized control.

Through its modular and software-driven design philosophy, this switch supports growth without requiring frequent hardware refresh cycles. Organizations benefit from predictable expansion paths that accommodate additional endpoints and evolving application demands. This scalability ensures the network remains adaptable as user density, device types, and traffic patterns continue to change.

High-Density 48-Port PoE+ Access Capabilities

The 48-port PoE+ configuration is engineered to deliver power and data over a single Ethernet connection, reducing cabling complexity and deployment costs. Each port is capable of supporting powered devices such as VoIP phones, surveillance cameras, wireless access points, and building automation systems. This design simplifies infrastructure planning while supporting a wide range of endpoint requirements.

Power over Ethernet Plus capabilities ensure sufficient wattage for modern devices that demand higher power budgets. Intelligent power management mechanisms allocate power dynamically based on device requirements, optimizing efficiency and reducing waste. This makes the switch suitable for environments where device diversity and power demands vary across departments or floors.

Consistent Performance for Connected Devices

Consistent throughput and low latency are essential for maintaining application performance at the network edge. The Cisco C9300L-48P-4G-A ensures stable data delivery through advanced forwarding mechanisms and optimized internal architectures. This consistency supports real-time applications such as voice, video conferencing, and collaborative platforms without compromising user experience.

Traffic prioritization and quality of service features enable administrators to classify and manage data flows effectively. By ensuring critical applications receive appropriate bandwidth and priority, the switch contributes to a responsive and reliable network environment across all connected devices.

Integrated 4G SFP Uplink Connectivity

The inclusion of four fixed SFP uplink ports provides flexible connectivity options to aggregation or core layers. These uplinks support high-speed fiber connections, allowing the switch to integrate smoothly into enterprise backbone infrastructures. This design ensures sufficient uplink capacity to handle aggregated access traffic without congestion.

By supporting fiber-based uplinks, the switch enables extended distance connections between network segments. This is particularly beneficial for large campuses or multi-building deployments where copper limitations may restrict design flexibility. The uplink configuration supports efficient traffic aggregation and simplifies network segmentation strategies.

Reliable Data Aggregation and Distribution

Uplink reliability is a critical factor in access layer design, as it directly affects overall network availability. The Cisco C9300L-48P-4G-A supports link aggregation and redundancy features that enhance resiliency and fault tolerance. These capabilities minimize downtime and maintain connectivity during maintenance or unexpected link failures.

By ensuring stable uplink performance, the switch allows access layer devices to communicate efficiently with centralized resources such as data centers, cloud gateways, and security appliances. This reliability supports business-critical operations that depend on uninterrupted network access.

Advanced Security and Policy Enforcement

Security is a foundational element of modern enterprise networks, and the Cisco C9300L-48P-4G-A incorporates robust mechanisms to protect data and devices at the access layer. It supports identity-based access controls that enforce network policies based on user and device attributes. This approach reduces the risk of unauthorized access and lateral movement within the network.

Integrated threat detection and mitigation capabilities enhance the overall security posture. The switch can work in conjunction with Cisco security solutions to identify anomalies, apply segmentation policies, and respond to potential threats in real time. These features ensure that security is embedded directly into the network infrastructure rather than treated as an afterthought.

Secure Access for Diverse Endpoints

As organizations adopt a growing range of endpoints, including IoT devices and guest systems, access layer security becomes increasingly complex. The Cisco C9300L-48P-4G-A addresses this challenge by supporting flexible authentication methods and dynamic policy assignment. This ensures that each device receives appropriate access privileges based on its role and compliance status.

By enabling granular segmentation, the switch helps isolate sensitive resources and reduce the attack surface. This approach enhances compliance with internal policies and regulatory requirements while maintaining user productivity.

Intelligent Automation and Programmability

Automation is a key driver of operational efficiency in large-scale networks. The Cisco C9300L-48P-4G-A supports programmable interfaces and automation frameworks that simplify configuration, monitoring, and troubleshooting tasks. These capabilities reduce manual effort and minimize the risk of configuration errors.

Through software-defined features, administrators can deploy consistent policies across multiple switches from a centralized management platform. This approach accelerates provisioning and ensures uniform behavior throughout the network, even as it scales.

Streamlined Network Operations

Operational simplicity is achieved through enhanced visibility and analytics. The switch provides detailed telemetry data that helps administrators understand traffic patterns, device behavior, and potential issues. This data-driven approach supports proactive maintenance and informed decision-making.

Automation workflows also enable faster response to network changes, such as onboarding new devices or adjusting policies. By reducing reliance on manual intervention, the switch contributes to a more agile and resilient network environment.

Layer 2 and Layer 3 Feature Integration

The Cisco C9300L-48P-4G-A supports a comprehensive set of Layer 2 and Layer 3 features that allow flexible network design. These capabilities include advanced switching, routing, and redundancy mechanisms that support both simple and complex topologies. Network architects can design efficient access layer solutions without sacrificing control or performance.

Layer 3 support enables intelligent traffic routing at the access layer, reducing dependency on upstream devices. This can improve performance and resiliency by enabling localized routing decisions and faster convergence during network events.

Energy Efficiency and Sustainable Design

Energy efficiency is an important consideration for organizations seeking to reduce operational costs and environmental impact. The Cisco C9300L-48P-4G-A incorporates power-efficient hardware components and intelligent energy management features. These mechanisms optimize power usage based on actual demand, reducing unnecessary consumption.

Support for efficient PoE power allocation further contributes to sustainability goals by ensuring that connected devices receive only the power they require. This design aligns with green IT initiatives and supports long-term cost savings.

Optimized Cooling and Reliability

Thermal management is critical for maintaining performance and extending hardware lifespan. The switch features optimized airflow and cooling designs that ensure stable operation under continuous load. These design considerations enhance reliability and reduce the likelihood of heat-related failures.

By maintaining consistent operating conditions, the switch supports uninterrupted service delivery in enterprise environments.

Deployment Flexibility Across Industries

The Cisco C9300L-48P-4G-A is suitable for a wide range of deployment scenarios, including corporate offices, educational institutions, healthcare facilities, and retail environments. Its versatile feature set allows it to adapt to varying requirements while maintaining consistent performance and security.

In environments with high device density, the switch provides the capacity and intelligence needed to support diverse applications. This adaptability makes it a reliable choice for organizations seeking a standardized access layer solution.

Support for Modern Digital Workplaces

Modern workplaces rely on seamless connectivity to support collaboration, cloud services, and mobile workstyles. The Cisco C9300L-48P-4G-A delivers the performance and reliability required to support these demands. By ensuring stable access for wired and powered devices, it forms a critical foundation for digital transformation initiatives.

Its ability to integrate with broader network and security ecosystems ensures that organizations can evolve their infrastructures without disruption.