C9300-48S-A Cisco Ethernet Switch (48 Ports)

Outline of Cisco Network Essentials Managed Switch

The Cisco Catalyst 9300-48S-A is a high-performance managed switch engineered for organizations that require dependable Layer 3 networking, advanced traffic control, and long-term scalability. Designed as part of the Catalyst 9300 Series, this model delivers consistent throughput, intelligent routing, and flexible deployment options for campus, branch, and enterprise core environments.

Built in a compact 1U rack-mountable chassis, this switch integrates 48 Gigabit SFP ports to support high-speed fiber connectivity across demanding infrastructures. The stackable design enables seamless expansion while maintaining centralized management and operational simplicity.

General Specifications

• Manufacturer: Cisco
• Part Number: C9300-48S-A 
• Product Type: Layer 3 - Managed - Stackable Switch

Device Specifications

• Switch Type: Layer 3 - Managed - Stackable
• Form Factor: Rack-mountable 1U
• Subtype: Gigabit Ethernet
• Port Configuration: 48 Gigabit SFP Ports
• Switching Capacity: 128 Gbps
• Stacking Bandwidth: 480 Gbps
• Forwarding Rate: 190.48 Million Packets Per Second (Mpps)

Physical and Mechanical Specifications

• Space-efficient 1U rack-mount form factor
• Optimized airflow for continuous operation
• Durable enterprise-class construction
• Stack-ready architecture for simplified scaling

Port Configuration Highlights

• 48 x 1 Gigabit SFP LAN interfaces
• Dedicated uplink-ready architecture
• Flexible SFP module compatibility
• Designed for high-density fiber deployments

Performance Metrics

• Switching capacity up to 128 Gbps
• Forwarding rate reaching 190.48 Mpps
• Stacking bandwidth of up to 480 Gbps
• Optimized for low latency and high throughput

Supported Routing and Network Protocols

• Interior gateway protocols including OSPF, OSPFv3, IS-IS, RIP v1/v2, and RIPng
• Advanced routing with BGP and EIGRP
• Redundancy protocols such as HSRP and VRRP
• Multicast support with IGMP, PIM-SM, PIM-SSM, and MSDP
• Policy-Based Routing (PBR) for traffic optimization

Benefits of Stackable Switching

• Centralized management across stacked devices
• Higher aggregate bandwidth through stacking links
• Improved availability with stack-level failover
• Simplified upgrades and configuration consistency

Available Interfaces and Slots

• 1 x USB 2.0 port for storage and system tasks
• 1 expansion slot available for modular uplink options
• Designed to support next-generation networking modules

Operational and Management Benefits

• Advanced traffic visibility and control
• Efficient VLAN and segmentation management
• Improved network uptime through intelligent monitoring
• Compatibility with modern IT and cloud-driven architectures

Common Use Cases

• Enterprise campus access and distribution layers
• Data-intensive branch office environments
• High-density fiber network deployments
• Organizations planning long-term network growth

Highlight of Cisco C9300-48S-A Catalyst 48 Ports Switch

The Cisco C9300-48S-A Catalyst 9300 Network Advantage 48 Ports Switch represents a high-performance switching platform designed for enterprises that demand scalability, security, and advanced automation. Built as part of the Catalyst 9300 Series, this model is engineered to operate as a foundational layer in access networks, aggregation environments, and branch deployments where reliability and throughput are mission-critical. Its architecture is optimized for continuous operation, supporting evolving business requirements such as cloud connectivity, software-defined networking, and policy-driven access control.

This switch is positioned as a premium category solution for organizations seeking consistent network performance combined with advanced software capabilities. By leveraging Cisco’s custom ASICs and robust hardware design, the C9300-48S-A ensures predictable latency, high availability, and efficient traffic handling across diverse workloads. Its role within enterprise infrastructures extends beyond basic packet forwarding, enabling intelligent network behavior that adapts dynamically to user demands and application priorities.

48-Port SFP-Based Connectivity  

The 48 SFP port configuration of the Cisco C9300-48S-A is specifically tailored for fiber-based deployments that require high-speed, long-distance connectivity. Each port supports SFP modules, allowing flexible media choices including single-mode and multi-mode fiber. This design makes the switch ideal for environments where copper cabling is insufficient or where electromagnetic interference must be minimized.

Fiber-based connectivity enhances network resilience and future-readiness, enabling organizations to scale bandwidth as demands increase. The 48-port layout provides ample capacity for connecting access points, servers, aggregation switches, and other network devices, ensuring seamless communication across distributed infrastructures. This configuration supports enterprises with large campuses, data centers, or multi-floor buildings that rely on fiber backbones for consistent performance.

Optimized Throughput and Low Latency Switching

The internal switching fabric of the Cisco C9300-48S-A is engineered to deliver high throughput with minimal latency. This ensures that real-time applications such as voice, video conferencing, and collaborative tools operate smoothly even during peak usage. The switch efficiently processes traffic flows using advanced buffering and queue management, reducing congestion and packet loss.

By maintaining consistent performance across all ports, the switch supports demanding workloads without degradation. This makes it suitable for enterprises running bandwidth-intensive applications, virtualized environments, and cloud-based services that require predictable network behavior.

Scalable Bandwidth with Modular Uplinks

The Catalyst 9300 Series supports modular uplink options, allowing organizations to tailor uplink bandwidth according to network growth. The Cisco C9300-48S-A can be equipped with uplink modules that provide high-speed connections to core or distribution layers. This modularity ensures that the switch remains relevant as network requirements evolve.

Scalable uplinks help future-proof investments by enabling incremental upgrades rather than full hardware replacements. Enterprises benefit from the ability to expand capacity seamlessly while maintaining operational continuity.

Network Advantage Software for Advanced Capabilities

The Network Advantage software license included with the Cisco C9300-48S-A unlocks a comprehensive set of enterprise-grade features. This software tier is designed for organizations that require advanced routing, segmentation, and automation capabilities. It supports dynamic routing protocols, policy-based networking, and enhanced security features that extend beyond basic Layer 2 switching.

Network Advantage enables the switch to function as an intelligent network node, capable of enforcing policies, optimizing traffic flows, and integrating with broader network management frameworks. This software layer transforms the hardware into a versatile platform that adapts to changing business needs.

Advanced Layer 3 Routing Support

With Network Advantage, the Cisco C9300-48S-A supports advanced Layer 3 routing protocols such as OSPF, EIGRP, and BGP. This allows the switch to participate actively in routed networks, supporting complex topologies and resilient path selection. Enterprises can design networks that balance traffic efficiently while maintaining redundancy and fault tolerance.

The integration of routing capabilities at the access layer reduces dependency on separate routing devices, simplifying network architectures and lowering operational complexity.

Policy-Based Networking and Segmentation

Policy-based networking is a core strength of the Catalyst 9300 platform. The Cisco C9300-48S-A leverages software-defined access principles to enforce consistent policies across the network. Segmentation capabilities allow administrators to define logical network boundaries based on user roles, device types, or application requirements.

This approach enhances security and compliance while simplifying network management. Policies can be applied centrally and propagated automatically, reducing the risk of configuration errors and ensuring consistent enforcement.

Integrated Security for Enterprise Protection

Security is deeply embedded in the design of the Cisco C9300-48S-A Catalyst 9300 Network Advantage 48 Ports Switch. The platform incorporates multiple layers of defense to protect against internal and external threats. From hardware-based trust anchors to advanced software security features, the switch is built to safeguard critical network assets.

These security capabilities are essential for enterprises operating in regulated industries or handling sensitive data. By integrating security directly into the network infrastructure, organizations can reduce attack surfaces and respond more effectively to emerging threats.

Hardware-Based Trust and Secure Boot

The switch includes hardware-based trust mechanisms that verify the integrity of the system during startup. Secure boot processes ensure that only authentic and authorized software images are executed, preventing malicious code from compromising the device.

This foundational security feature establishes a chain of trust that extends throughout the network, providing assurance that infrastructure components operate as intended.

Advanced Threat Detection and Mitigation

Integrated security features support threat detection and mitigation at the network edge. Capabilities such as access control lists, secure segmentation, and integration with Cisco security platforms enable proactive defense strategies. The switch can identify anomalous traffic patterns and enforce policies to limit potential damage.

These features help organizations maintain a strong security posture without relying solely on external security appliances.

Automation and Programmability 

The Cisco C9300-48S-A is designed with automation and programmability in mind, enabling IT teams to streamline operations and reduce manual configuration tasks. Support for open APIs, scripting, and automation frameworks allows integration with modern network management tools and DevOps workflows.

Automation capabilities reduce deployment times, improve consistency, and minimize human error. This is particularly valuable in large-scale environments where manual configuration would be time-consuming and error-prone.

Support for Software-Defined Networking

The Catalyst 9300 platform integrates seamlessly with Cisco’s software-defined networking solutions. The Cisco C9300-48S-A can be managed through centralized controllers, enabling policy-driven configuration and monitoring. This centralized approach simplifies network operations and enhances visibility across the infrastructure.

Software-defined networking capabilities allow organizations to adapt quickly to changing requirements, deploying new services or modifying policies with minimal disruption.

Programmable Interfaces and APIs

Programmable interfaces provide flexibility for custom automation and integration with third-party tools. The switch supports industry-standard APIs that allow developers and network engineers to build tailored solutions for monitoring, configuration, and orchestration.

This programmability empowers organizations to innovate and optimize network operations according to their unique needs.

High Availability and Resilience for Continuous Operations

Enterprise networks require uninterrupted connectivity, and the Cisco C9300-48S-A is engineered to deliver high availability. Redundant power supplies, advanced stacking capabilities, and fast convergence protocols contribute to resilient network designs that minimize downtime.

These features ensure that critical applications remain accessible even in the event of hardware failures or network disruptions.

StackWise Technology for Unified Management

StackWise technology allows multiple Catalyst 9300 switches to operate as a single logical unit. This simplifies management and increases scalability, enabling administrators to manage large deployments efficiently. Stacked switches share control planes and forwarding information, providing seamless failover and load balancing.

Unified management through stacking reduces complexity while enhancing resilience, making it easier to expand networks without compromising reliability.

Redundant Power and Cooling Design

The hardware design of the Cisco C9300-48S-A includes support for redundant power supplies and efficient cooling mechanisms. These features protect against component failures and ensure stable operation under demanding conditions.

Redundancy at the hardware level is essential for maintaining uptime in mission-critical environments.

Energy Efficiency and Sustainable Network Design

The Catalyst 9300 Series incorporates energy-efficient technologies that help organizations reduce operational costs and environmental impact. The Cisco C9300-48S-A is designed to optimize power consumption without sacrificing performance.

Energy efficiency is achieved through intelligent power management, efficient hardware components, and software features that adjust resource usage based on demand.

Intelligent Power Management Features

Power management capabilities allow administrators to monitor and control energy usage across the switch. These features help identify opportunities for optimization and support sustainability initiatives.

Efficient power utilization contributes to lower operating expenses and aligns with corporate responsibility goals.

Deployment Flexibility Across Enterprise Environments

The Cisco C9300-48S-A Catalyst 9300 Network Advantage 48 Ports Switch is suitable for a wide range of deployment scenarios. Its versatility makes it an ideal choice for campus networks, branch offices, and specialized environments requiring high-speed fiber connectivity.

The switch’s robust feature set ensures that it can adapt to diverse requirements, supporting both current and future network architectures.

Campus and Branch Network Applications

In campus environments, the switch provides reliable access layer connectivity with advanced policy enforcement and security. In branch deployments, it delivers consistent performance while supporting centralized management and automation.

This adaptability makes the Cisco C9300-48S-A a strategic investment for organizations seeking a unified switching platform.

Integration with Existing Cisco Ecosystems

The switch integrates seamlessly with existing Cisco infrastructure and management tools. This compatibility simplifies deployment and ensures that organizations can leverage their existing investments.

Integration across the Cisco ecosystem enhances visibility, control, and operational efficiency, reinforcing the value of the Catalyst 9300 platform.

Future-Ready Design for Evolving Network Demands

The Cisco C9300-48S-A is designed with future expansion in mind. Its modular architecture, advanced software capabilities, and support for emerging technologies ensure that it remains relevant as network demands continue to grow.

This future-ready design provides organizations with confidence that their network infrastructure can evolve alongside business objectives, supporting innovation and long-term success.