C9300-48S-E Cisco Catalyst 9300 Managed Switch, 48-Port Rack-mountable

Enterprise-Grade Managed Switching Architecture

The Cisco Catalyst C9300-48S-E is a high-performance managed network switch engineered to support modern enterprise infrastructures, service providers, and growing campus environments. Designed around advanced Layer 3 capabilities, this switch delivers consistent throughput, intelligent traffic handling, and resilient network operations for mission-critical deployments. Its stackable design and compact 1U rack-mountable form factor make it an ideal choice for scalable network cores and access layers.

General Information

• Manufacturer: Cisco
• Part Number: C9300-48S-E
• Product Type: Managed Switch

Technical Specifications

• Enclosure Type: Rack-mountable 1U
• Ports: 48 x 10/100/1000
• Switching Capacity: 128 Gbps
• Stacking Bandwidth: 480 Gbps
• Forwarding Rate: 190.48 Mpps

Supported Routing Protocols

• OSPF
• IS-IS
• RIP-1
• RIP-2
• BGP
• EIGRP
• HSRP
• IGMP
• VRRP
• PIM-SM
• OSPFv3
• PIM-SSM
• MSDP
• Policy-based Routing (PBR)
• RIPng

Expansion and Connectivity

• 48 x Gigabit LAN SFP Uplink
• 1 x USB 2.0 Port
• Expansion Slots: 1 (total) / 1 (free)

StackWise-480 Technology

• Stacking of up to nine switches
• A total of 432 10/100/1000 Ethernet ports
• 48 1/10 Gbps SFP/SFP+ ports
• Highly scalable and reliable network setup

Cisco DNA Software Compatibility

• Advanced network automation
• Enhanced security features
• Detailed network analytics
• Software-Defined Access
• Identity Services Engine (ISE)
• Network Assurance Engine (NAE)

Multigigabit Ethernet Support

• Port speeds of up to 10 Gbps
• Compatibility with 2.5 Gbps and 5 Gbps ports
• Increased bandwidth capabilities
• Efficient network resource utilization

Power over Ethernet Plus (PoE+)

• Up to 30 watts of power per port
• Power to IP phones, wireless access points, and cameras
• Elimination of additional power sources

Network Virtualization Features

• Creation of multiple virtual networks
• Single physical infrastructure
• Increased flexibility for diverse applications
• Enhanced security for different tenants

Advanced Security Features

• Cisco TrustSec for identity-based security
• Cisco Identity Services Engine for network access control
• Advanced Malware Protection (AMP) for real-time threat detection
• Protection against malware and cyber threats

High Availability Features

• Non-Stop Forwarding (NSF)
• Stateful Switchover (SSO)
• Continued traffic forwarding during failures
• Support for business continuity

Overview of Cisco Enterprise-Class Managed Switch 

The Cisco C9300-48S-E Rack-mountable Catalyst 9300 Managed 48 Ports Switch represents a core building block within enterprise access and aggregation layers, engineered to deliver consistent performance, advanced security, and flexible scalability. As part of the Catalyst 9300 family, this model is designed to support evolving network architectures that demand high availability, predictable throughput, and intelligent traffic management across campus, branch, and distributed enterprise environments. Its rack-mountable form factor ensures seamless integration into standard data center and network closets, while its robust hardware architecture provides long-term operational stability.

This category focuses on high-density fiber-based access switching, making the Cisco C9300-48S-E especially relevant for organizations transitioning toward fiber-rich infrastructures. With forty-eight SFP ports, the switch supports reliable connectivity for access points, servers, uplinks to aggregation layers, and fiber-based edge devices. The platform is optimized for continuous operation, supporting enterprises that require nonstop network availability and consistent performance across business-critical applications.

Architectural Design and Hardware Capabilities

The hardware architecture of the Cisco C9300-48S-E is built around purpose-driven silicon that balances forwarding performance, security enforcement, and programmability. The switch is engineered to process traffic efficiently across all ports without bottlenecks, enabling deterministic latency and stable throughput even during peak usage. This hardware-based approach allows the device to handle advanced features such as quality of service enforcement, access control, and encryption without sacrificing forwarding speed.

Rack-mountable by design, the chassis integrates seamlessly into enterprise racks, supporting standardized airflow and power management practices. Redundant power supply support enhances resilience, reducing downtime risks associated with power-related failures. The internal cooling system is optimized for continuous operation, ensuring consistent thermal performance in dense network environments where multiple devices operate simultaneously.

High-Density SFP Port Configuration

The forty-eight SFP ports define the core identity of the Cisco C9300-48S-E category. These ports are designed to support a wide range of optical and copper transceivers, enabling flexible deployment scenarios across short-range, long-range, and inter-building connections. This flexibility allows organizations to standardize on a single switching platform while adapting connectivity options to suit diverse physical layouts.

Fiber-based access switching is particularly beneficial in environments where electromagnetic interference, distance limitations, or bandwidth requirements exceed what traditional copper cabling can reliably support. By leveraging SFP connectivity, enterprises can extend network reach while maintaining signal integrity and performance consistency.

Modular Uplink Flexibility

The Cisco Catalyst 9300 platform incorporates modular uplink options that enable organizations to tailor upstream connectivity according to evolving network requirements. This modularity allows the Cisco C9300-48S-E to adapt to different aggregation and core architectures, supporting scalable bandwidth growth without requiring complete hardware replacement. As network demands increase, uplink modules can be selected to accommodate higher throughput and future expansion.

This design philosophy aligns with long-term infrastructure planning, ensuring that investments in access switching remain relevant as upstream network layers evolve. The ability to adjust uplink capacity contributes to lower total cost of ownership and simplified lifecycle management.

Advanced Software Features and Network Intelligence

The Cisco C9300-48S-E category is defined not only by hardware strength but also by its comprehensive software capabilities. Built to operate with Cisco’s enterprise network operating systems, the switch supports a wide array of Layer 2 and Layer 3 features that enable intelligent traffic handling, segmentation, and policy enforcement. These capabilities allow network administrators to design architectures that balance performance, security, and operational simplicity.

Integrated management features provide visibility into network behavior, enabling proactive monitoring and rapid troubleshooting. By leveraging telemetry and analytics, administrators can gain insight into application performance, traffic patterns, and potential anomalies, supporting informed decision-making and efficient resource allocation.

Layer 2 and Layer 3 Switching Capabilities

The Cisco C9300-48S-E supports a comprehensive set of Layer 2 features, including advanced VLAN management, spanning tree enhancements, and link aggregation. These capabilities enable stable and loop-free network designs while optimizing bandwidth utilization across redundant paths. At the Layer 3 level, the switch supports dynamic routing protocols and inter-VLAN routing, allowing it to function as both an access and distribution layer device in appropriately sized networks.

This dual-layer functionality simplifies network design by reducing the need for additional routing devices in certain scenarios. It also supports segmented network architectures that isolate traffic for performance optimization and security enforcement.

Quality of Service and Traffic Prioritization

Quality of Service features are central to the Cisco C9300-48S-E category, ensuring that latency-sensitive applications such as voice, video, and real-time collaboration receive appropriate priority. The switch can classify traffic based on multiple criteria, applying policies that allocate bandwidth and manage congestion effectively. This level of control is essential for organizations that rely on unified communications and cloud-based services.

By enforcing consistent QoS policies at the access layer, enterprises can maintain predictable application performance even during periods of high network utilization. This contributes to improved user experience and reduced operational disruptions.

Security Architecture and Policy Enforcement

Security is a defining aspect of the Cisco Catalyst 9300 family, and the C9300-48S-E is no exception. The switch incorporates a multi-layered security architecture designed to protect network infrastructure, data integrity, and user access. This category emphasizes proactive threat mitigation through integrated security features that operate directly within the switching fabric.

By embedding security capabilities at the access layer, organizations can enforce consistent policies close to the source of network traffic. This approach reduces the attack surface and enables rapid response to potential threats.

Identity-Based Networking and Access Control

The Cisco C9300-48S-E supports identity-based networking models that tie user and device identities to network access policies. This allows administrators to define granular access controls that adapt dynamically based on authentication status, device type, and contextual information. Such capabilities are particularly valuable in environments with diverse endpoints, including corporate devices, personal devices, and IoT equipment.

Through integrated authentication mechanisms and policy frameworks, the switch can enforce segmentation and access restrictions without requiring manual configuration on a per-port basis. This reduces administrative overhead while enhancing overall security posture.

Threat Detection and Mitigation

Advanced threat detection capabilities within the Cisco C9300-48S-E category enable the identification of anomalous traffic patterns and potential security incidents. By monitoring traffic flows and leveraging built-in intelligence, the switch can assist in identifying suspicious behavior before it escalates into a network-wide issue.

These security features operate in conjunction with broader network security architectures, supporting coordinated threat response and compliance with organizational security standards. The result is a more resilient network that can adapt to evolving threat landscapes.

High Availability and Resilience

Continuous network availability is a critical requirement for modern enterprises, and the Cisco C9300-48S-E is designed with resilience in mind. The switch supports features that minimize downtime and maintain service continuity during maintenance activities or unexpected failures. This category emphasizes reliability as a core value, ensuring that network operations remain stable under diverse conditions.

Hardware redundancy, intelligent failover mechanisms, and rapid convergence protocols all contribute to a robust availability profile. These features are essential for organizations that depend on uninterrupted access to digital resources.

Stacking and Virtualization Capabilities

The Cisco Catalyst 9300 platform supports advanced stacking technologies that allow multiple switches to operate as a single logical unit. Within the C9300-48S-E category, this capability enables simplified management, increased port density, and enhanced redundancy. Stacked configurations can distribute traffic and control functions across multiple units, reducing the impact of individual device failures.

Stacking also streamlines configuration and monitoring tasks, allowing administrators to manage a group of switches through a unified interface. This operational efficiency is particularly beneficial in large campus deployments.

Fast Convergence and Redundant Design

Fast convergence protocols supported by the Cisco C9300-48S-E ensure rapid recovery from link or device failures. By minimizing reconvergence times, the switch helps maintain application availability and reduce user disruption. Redundant power and uplink options further enhance resilience, providing multiple layers of protection against common failure scenarios.

This focus on high availability aligns with enterprise requirements for business continuity and service-level assurance.

Scalability and Future-Ready Networking

The Cisco C9300-48S-E category is designed to support network growth and technological evolution. Its scalable architecture allows organizations to expand capacity, integrate new services, and adopt emerging technologies without overhauling existing infrastructure. This future-ready approach ensures that the switch remains relevant as network demands evolve.

Support for programmability and automation enables integration with modern network management frameworks. By exposing APIs and supporting automation tools, the switch allows organizations to streamline operations and reduce manual configuration efforts.

Programmability and Automation Support

The Cisco C9300-48S-E supports programmable interfaces that enable network administrators to automate routine tasks and integrate switching infrastructure with orchestration platforms. This capability supports intent-based networking models, where desired outcomes are defined at a high level and implemented automatically across the network.

Automation reduces configuration errors, accelerates deployment timelines, and enhances operational consistency. These benefits are particularly valuable in large-scale environments with frequent changes.

Use Cases and Deployment Scenarios

The Cisco C9300-48S-E is well-suited for a wide range of deployment scenarios, from enterprise campus access layers to aggregation roles in fiber-rich environments. Its high port density and advanced feature set make it an ideal choice for organizations that require reliable, secure, and scalable connectivity.

In campus environments, the switch can support access points, building interconnects, and high-performance endpoints. In enterprise networks, it can function as a distribution layer device, aggregating traffic from multiple access switches while enforcing policies and maintaining performance standards.

Enterprise Campus and Branch Networks

Within enterprise campuses, the Cisco C9300-48S-E supports dense user populations and diverse application requirements. Its fiber-based connectivity options enable flexible building layouts and long-distance connections between network segments. Branch deployments benefit from the switch’s compact rack-mountable design and comprehensive feature set, which supports local services while integrating seamlessly with centralized management frameworks.

This versatility allows organizations to standardize on a single switching platform across multiple locations, simplifying procurement and support.

Data-Intensive and High-Performance Environments

In data-intensive environments where performance and reliability are paramount, the Cisco C9300-48S-E provides consistent throughput and low latency. Its ability to handle large volumes of traffic while enforcing security and QoS policies makes it suitable for applications such as collaboration platforms, virtualized workloads, and cloud connectivity.

By delivering predictable performance, the switch supports business-critical operations and enhances overall network efficiency.

Operational Efficiency 

Operational simplicity is a key consideration within the Cisco C9300-48S-E category. The switch is designed to reduce administrative complexity through centralized management, intuitive interfaces, and comprehensive monitoring tools. These capabilities enable IT teams to manage networks more efficiently and respond quickly to changing conditions.

Integration with enterprise management platforms allows administrators to monitor performance metrics, apply configurations, and troubleshoot issues from a centralized location. This reduces the time and effort required to maintain network health.