WS-C3550-48-SMI Cisco Catalyst 3550 Managed Switch with 48 Ports

Cisco WS-C3550-48-SMI 48 Ports Managed Switch

The Cisco WS-C3550-48-SMI is a high-performance managed switch designed to meet the demands of modern networking environments. Part of the renowned Catalyst series, this model integrates a variety of advanced features to support robust network management and connectivity.

Manufacturer Details

• Brand: Cisco
• Model Number: WS-C3550-48-SMI
• Series: Catalyst 3550
• Type: Ethernet Switch

Port Configuration

• Total Ports: 48
• Fast Ethernet Ports: Included
• LAN Ports: 48 x RJ-45 10/100Base-TX
• Console Management Port: 1 x RJ-45

Switching and Forwarding Capabilities

• Switching Fabric: 13.6 Gbps
• Forwarding Bandwidth: 6.8 Gbps at Layer 2 and Layer 3
• Forwarding Rate: 10.1 Mbps for 64-byte packets

Connectivity Media Support

• Category 4 UTP: 10Base-T
• Category 3 UTP: 10Base-T
• Category 5 UTP: 10/100Base-TX

Expansion Slots

• Number of Slots: 2
• Slot Type: GBIC
• Modules: Not included

Network and Communication

• MAC Address Table: 8,000 addresses

Memory Specifications

• Standard Memory: 64 MB
• Flash Memory: 16 MB

Reliability and Power Information

• MTBF: 163,000 hours

Power Requirements

• Input Voltage: 110V AC, 220V AC
• Voltage Range: 100V AC to 127V AC
• Frequency: 50 Hz to 60 Hz
• Power Consumption: Up to 110W

Cisco WS-C3550-48-SMI Ethernet Switch

The Cisco WS-C3550-48-SMI Catalyst 3550 Managed Switch is designed for enterprise-grade networks requiring high performance, reliability, and extensive manageability. Equipped with 48 ports, this switch provides a robust solution for organizations looking to optimize their network infrastructure while ensuring scalability and flexibility. It is part of the renowned Cisco Catalyst 3550 series, known for combining Layer 2 switching capabilities with Layer 3 routing features, which allows efficient data handling and network segmentation.

High-Performance Switching Capabilities

The Catalyst 3550 series, including the WS-C3550-48-SMI model, offers high-speed packet forwarding and low latency performance. It supports advanced features such as Quality of Service (QoS) for traffic prioritization, VLANs for logical network segmentation, and multicast support for efficient media delivery. These capabilities make it suitable for environments that demand high bandwidth, such as data centers, large enterprise campuses, and high-traffic enterprise networks.

Layer 2 Switching Features

As a managed Layer 2 switch, the WS-C3550-48-SMI provides comprehensive functionality to ensure smooth data transmission within the same network. It supports a wide range of Layer 2 protocols, including Spanning Tree Protocol (STP), Rapid Spanning Tree Protocol (RSTP), and VLAN trunking. The switch allows network administrators to create multiple VLANs, isolate traffic for security and efficiency, and implement port-based access control to manage connected devices effectively.

Advanced VLAN Management

The Catalyst 3550 switch allows the creation of numerous VLANs to segment network traffic based on department, application, or user type. VLAN Trunking Protocol (VTP) is supported, enabling seamless propagation of VLAN configurations across multiple switches, which reduces configuration errors and simplifies network management. VLAN capabilities enhance both network security and performance by preventing unnecessary broadcast traffic and logically grouping devices within the same broadcast domain.

Layer 3 Routing Functions

Unlike standard Layer 2 switches, the WS-C3550-48-SMI integrates Layer 3 routing capabilities, enabling inter-VLAN routing and static or dynamic routing options. It supports routing protocols such as Routing Information Protocol (RIP) and Open Shortest Path First (OSPF), providing efficient packet delivery across different network segments. Layer 3 functionality reduces reliance on external routers for intra-network routing, thus improving response time and simplifying the overall network design.

IP Routing and Network Segmentation

The built-in IP routing features facilitate communication between VLANs without external routing devices. This allows administrators to implement segmented network designs that improve security, reduce congestion, and enhance overall network reliability. Static routing ensures stable paths for critical applications, while dynamic routing adapts to network changes automatically, maintaining optimal performance under varying network conditions.

Scalability and Port Density

The 48-port configuration of the WS-C3550-48-SMI switch offers extensive connectivity for wired devices, enabling network expansion without the need for multiple switches. The high port density supports a wide range of devices, from desktop computers and IP phones to wireless access points and servers. This scalability makes it ideal for growing networks that require future-proof solutions capable of handling increasing network demands without significant infrastructure changes.

Stacking and Redundancy Options

The Catalyst 3550 series supports stacking technologies, allowing multiple switches to operate as a single logical unit. This reduces management complexity and provides redundancy to ensure uninterrupted network operation. In addition, redundant power supply options and hot-swappable components minimize downtime in critical environments. These features enhance network reliability and provide the necessary infrastructure to support enterprise applications, video streaming, and VoIP communications effectively.

Enhanced Network Reliability

With advanced failover mechanisms, the WS-C3550-48-SMI ensures that network traffic is continuously maintained even in the event of hardware or link failure. Spanning Tree Protocols prevent loops in the network, and redundant uplinks maintain connectivity for mission-critical services. These reliability features make it suitable for environments where consistent network availability is essential, such as hospitals, financial institutions, and corporate campuses.

Security and Access Control

Security is a critical aspect of enterprise networks, and the WS-C3550-48-SMI provides multiple layers of protection. It supports Access Control Lists (ACLs), 802.1X port-based authentication, and secure management protocols such as SSH and SNMPv3. These features enable administrators to control device access, monitor network activity, and prevent unauthorized intrusion or misuse of network resources. By combining Layer 2 and Layer 3 security measures, the switch helps maintain a secure, resilient network environment.

Port Security and User Authentication

Port security allows network administrators to limit the number of devices connected to each port, preventing unauthorized access. The switch integrates 802.1X authentication, ensuring that only authorized users and devices can connect to the network. Additionally, VLAN assignment based on user credentials further enhances network segmentation and security, protecting sensitive data from potential threats.

Network Monitoring and Management

Efficient network management is crucial for maintaining high performance and minimizing downtime. The WS-C3550-48-SMI supports Simple Network Management Protocol (SNMP), Cisco Network Assistant, and Command-Line Interface (CLI) for comprehensive monitoring and configuration. These tools provide real-time insights into network performance, traffic patterns, and device status, enabling proactive management and rapid troubleshooting of potential issues. Administrators can automate routine tasks, generate performance reports, and implement configuration backups with ease.

Quality of Service and Traffic Prioritization

Quality of Service (QoS) capabilities allow administrators to prioritize critical traffic, such as voice, video, or mission-critical applications, over less time-sensitive data. By applying traffic shaping and scheduling policies, the switch ensures optimal network performance and reduces latency. QoS is essential for environments where applications demand high reliability and minimal disruption, such as video conferencing, VoIP systems, and cloud-based services.

Energy Efficiency and Environmental Considerations

The Cisco WS-C3550-48-SMI is designed with energy efficiency in mind, reducing operational costs without compromising performance. The switch supports energy-saving technologies such as intelligent power management and reduced power consumption during periods of low network activity. Its compact design and low heat emission also contribute to a greener IT environment, making it suitable for enterprises committed to sustainability while maintaining a high-performance network infrastructure.

Integration with Existing Networks

The WS-C3550-48-SMI switch integrates seamlessly with existing Cisco networks and supports interoperability with other Cisco devices. It provides backward compatibility with previous Catalyst models, enabling organizations to upgrade network capabilities without a complete overhaul. The switch also supports industry-standard protocols, ensuring smooth integration with third-party networking equipment and simplifying network expansion projects.

Flexible Deployment Options

This managed switch can be deployed in various scenarios, including core, distribution, or access layers of enterprise networks. Its adaptability allows administrators to design network topologies that best meet performance, redundancy, and scalability requirements. Whether used in campus networks, branch offices, or data centers, the WS-C3550-48-SMI delivers consistent performance and management flexibility.

Comprehensive Support and Management

Cisco provides extensive technical support and resources for the WS-C3550-48-SMI, including firmware updates, configuration guides, and best practice recommendations. Organizations benefit from a proven support ecosystem, ensuring long-term reliability and minimized operational risks. Lifecycle management tools help administrators plan upgrades, monitor switch performance, and maintain compliance with enterprise network standards.

Firmware Updates and Feature Enhancements

Regular firmware updates from Cisco enhance security, improve stability, and introduce new functionalities. These updates allow organizations to extend the lifecycle of their Catalyst switches, reduce vulnerabilities, and take advantage of evolving network technologies without replacing hardware. Administrators can schedule updates with minimal disruption, ensuring continuous operation of the network.

Extended Warranty and Cisco Services

Cisco offers extended warranty and service options for the Catalyst 3550 series, providing peace of mind for enterprises investing in network infrastructure. Services such as Cisco SMARTnet provide 24/7 technical support, hardware replacement, and access to advanced troubleshooting tools. These services ensure that network issues are resolved quickly, minimizing downtime and maintaining business continuity.