WS-C3550-48-EMI Cisco 48-Port Switch

Cisco WS-C3550-48-EMI 48-Port Managed Switch

The Cisco WS-C3550-48-EMI is a high-performance managed network switch designed for enterprise-grade networking environments. This robust 48-port switch provides comprehensive management features, seamless connectivity, and scalable performance suitable for small to medium-sized networks.

Key Specifications

• Manufacturer: Cisco
• Model Number: WS-C3550-48-EMI
• Category: Network Switch
• Ports: 48 x 10/100 Fast Ethernet + 2 x GBIC for uplink expansion
• Form Factor: Desktop or 1U rack-mountable
• MAC Address Table Capacity: 8,000 entries

Network Interface Features

• Supports Fast Ethernet connections for high-speed LAN operations
• 48 RJ-45 10/100 Mbps ports optimized for desktop or server connectivity
• 2 GBIC slots allowing flexible fiber optic uplink expansion
• Console port (RJ-45) for direct device management and configuration

SNMP and RMON Support

• Simple Network Management Protocol (SNMP) versions 1, 2, and 3
• Remote Monitoring (RMON) groups 1 and 2 for traffic and performance tracking

Authentication and Security Protocols

• RADIUS authentication for centralized access control
• TACACS+ protocol for enhanced user authentication and authorization
• IEEE 802.1x compliance for secure port-based network access

Standards Compliance and Certifications

• IEEE 802.3, 802.3u, 802.3z – Ethernet and Fast Ethernet standards
• IEEE 802.1D, 802.1Q, 802.1p – Spanning tree, VLAN tagging, and traffic prioritization
• IEEE 802.3ab, 802.3x, 802.1w – Gigabit Ethernet support, flow control, and rapid spanning tree
• Certification: FCC Class A, UL, cUL, CSA, TUV GS, EN 60950, EN 55022, BSMI, NOM, VCCI Class A ITE

Memory and Performance

• 64 MB RAM ensures efficient packet processing
• 16 MB flash memory supports firmware and configuration storage
• LED status panel indicates link activity, port speed, duplex mode, bandwidth usage, and power status

Connectivity and Expansion Options

• 48 x 100Base-TX RJ-45 ports for Fast Ethernet connectivity
• 2 x GBIC slots for fiber optic uplink expansion, enhancing network scalability
• Console port for configuration and troubleshooting
• Redundant Power System (RPS) support for uninterrupted operations

Power and Energy Specifications

• Internal power supply supporting AC 120/230 V (50/60 Hz)
• Typical operational power consumption: 86 Watts
• Optional RPS connection allows redundant power backup

Environmental and Operational Conditions

• Operating temperature range: 32 °F to 113 °F (0 °C to 45 °C)
• Relative humidity: 10% to 85% (non-condensing)
• Maximum operating altitude: 9,840 ft (3,000 m)

Additional Features and Accessories

• Serial adapter included for easy management and configuration
• High reliability with a mean time between failures (MTBF) of 163,000 hours
• LED indicators for link quality, activity monitoring, and power status

Ideal Applications

• Enterprise LAN environments requiring high port density and fast Ethernet connectivity
• Small to medium-sized business networks that demand reliable managed switch capabilities
• Data centers requiring expandable uplink options and redundant power support

Cisco WS-C3550-48-EMI 48-Port Manageable Switch

The Cisco WS-C3550-48-EMI is a high-performance, 48-port manageable switch designed to meet the demanding networking requirements of enterprise environments. Belonging to the Catalyst 3550 series, this switch offers a robust combination of scalability, reliability, and advanced features, making it an ideal solution for medium to large networks. Its versatile design allows network administrators to deploy it as a core, distribution, or access layer device, providing seamless integration into existing infrastructures.

High-Performance Switching Capabilities

With 48 Fast Ethernet ports, the WS-C3550-48-EMI switch delivers exceptional data throughput and minimal latency, ensuring smooth network operations even under heavy traffic loads. The switch supports Layer 2 and Layer 3 functionalities, enabling efficient routing and switching across VLANs and subnets. Integrated quality of service (QoS) mechanisms prioritize critical traffic, such as voice and video, maintaining network performance and reliability.

Advanced Layer 3 Features

The Layer 3 capabilities of the WS-C3550-48-EMI include static and dynamic routing protocols such as RIP, OSPF, and EIGRP, which allow flexible network design and enhanced connectivity between different network segments. The switch supports inter-VLAN routing, making it suitable for complex network topologies that require segmentation, traffic isolation, and optimized data flow. These advanced routing features improve overall network efficiency and reduce congestion.

Integrated Security Functions

Security is a critical aspect of enterprise networking, and the WS-C3550-48-EMI provides multiple security mechanisms to protect sensitive data. The switch supports 802.1X port-based authentication, ensuring only authorized devices access the network. Access control lists (ACLs) enable granular control of network traffic, preventing unauthorized access and mitigating potential threats. Additionally, the switch offers secure management options, including SSH and SNMPv3, for encrypted communication and monitoring.

Scalability and Modular Design

The Cisco WS-C3550-48-EMI is engineered for scalability, allowing organizations to expand their network without replacing core infrastructure. The switch supports modular uplink modules, providing flexibility for connecting to gigabit or fiber networks. This adaptability ensures the switch remains a long-term investment as network demands evolve. With features such as stacking and redundant power supply options, it enhances network resilience and ensures continuous uptime for critical applications.

Energy Efficiency and Environmental Considerations

The switch incorporates energy-efficient technology to reduce power consumption while maintaining optimal performance. Low-power modes for unused ports and intelligent fan control contribute to reduced operational costs. Cisco's commitment to environmental responsibility ensures that the WS-C3550-48-EMI meets strict energy efficiency standards, making it suitable for organizations seeking sustainable networking solutions.

Reliability and Redundancy

Reliability is a core feature of the WS-C3550-48-EMI, with support for redundant power supplies and resilient hardware architecture. These features minimize downtime and ensure continuous network availability for mission-critical applications. The switch also includes robust error detection and correction mechanisms, supporting high availability and stable network performance even in challenging operating conditions.

VLAN and Traffic Segmentation

The WS-C3550-48-EMI supports extensive VLAN capabilities, allowing administrators to segment the network logically and improve security and traffic efficiency. VLAN trunking and dynamic VLAN assignment enhance network flexibility and optimize bandwidth usage. Segmentation also facilitates policy enforcement and ensures that sensitive data remains isolated from less secure network areas, providing a layered security approach.

Voice and Video Optimization

Integrated voice and video capabilities allow the WS-C3550-48-EMI to handle converged network traffic efficiently. The switch prioritizes latency-sensitive traffic using QoS mechanisms, ensuring clear voice calls and smooth video streaming. Cisco IP Telephony support and VLAN-based voice traffic management simplify deployment for unified communications, making the switch a preferred choice for organizations adopting voice-over-IP (VoIP) solutions.

Stacking and Network Expansion

Stacking features allow multiple WS-C3550 switches to operate as a single logical unit, simplifying management and scaling network capacity seamlessly. This capability enhances redundancy and load balancing, providing uninterrupted connectivity and improved performance. Stacking also reduces configuration complexity, as administrators can manage multiple devices from a single interface.

Applications and Use Cases

The WS-C3550-48-EMI is suitable for a wide range of enterprise networking scenarios. It excels in environments requiring high port density, such as large offices, data centers, and campus networks. The switch is ideal for supporting high-bandwidth applications, VoIP, video conferencing, and cloud-based services. Its advanced routing, security, and QoS capabilities make it a versatile solution for complex network deployments requiring reliability and performance.

Integration with Cisco Ecosystem

Seamless integration with other Cisco devices and software enhances the WS-C3550-48-EMI's value. The switch supports interoperability with Cisco routers, wireless access points, and security appliances, providing a comprehensive networking solution. Centralized management through Cisco Network Assistant or Cisco Prime allows administrators to monitor, configure, and troubleshoot the network efficiently, reducing operational overhead.

Technical Specifications

Key specifications of the WS-C3550-48-EMI include 48 Fast Ethernet 10/100 ports, dual redundant power supply options, Layer 2 and Layer 3 functionality, VLAN support, QoS prioritization, IP routing protocols, and advanced security features. The switch operates on Cisco IOS software, providing a familiar interface for configuration and management. It is rack-mountable, supports stacking, and offers modular uplinks for increased connectivity options.

Benefits of Deploying WS-C3550-48-EMI

Organizations deploying the WS-C3550-48-EMI benefit from improved network reliability, performance, and scalability. The switch's robust security features protect critical data, while Layer 3 routing and QoS ensure efficient handling of diverse traffic types. Easy manageability, energy efficiency, and long-term support make the WS-C3550-48-EMI a cost-effective solution for enterprise networks requiring high availability and performance.

Subcategory and Variants

The WS-C3550 family includes multiple variants tailored to different enterprise needs. Models vary in port density, power over Ethernet (PoE) support, uplink configurations, and redundancy features. Organizations can select the model that best aligns with their network topology, performance requirements, and budget considerations. Each variant retains core Catalyst 3550 features, ensuring consistency and compatibility across deployments.

PoE Capabilities

Certain variants of the WS-C3550 series support Power over Ethernet, allowing network devices such as IP phones, wireless access points, and surveillance cameras to receive power through the Ethernet cable. This eliminates the need for additional power infrastructure and simplifies device deployment. PoE features also enable centralized power management and reduce operational costs while maintaining network flexibility.

Future-Proofing Enterprise Networks

Investing in the WS-C3550-48-EMI ensures that enterprise networks are equipped to handle future growth and technological advancements. Its modular architecture, stacking capabilities, and support for advanced protocols allow seamless integration with emerging networking technologies. The switch's adaptability ensures that organizations can scale efficiently, implement new applications, and maintain high-performance connectivity for years to come.