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

Availability: In Stock
Part Number#: WS-C3550-48-SMI
List Price was: $123.08
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Short Description:
WS-C3550-48-SMI Catalyst 3550 Multilayer Stackable Managed Switch with 2x GBIC based Ethernet 48-Ports Managed Switch | Made by Cisco | Refurbished
Product Condition:
Warranty provided by ALLHDD.COM:
90 Days

Performance of 48 Ports Switch

This Product Cisco Catalyst 3550 48-Ports Managed Switch is a high-performance networking device that is designed for use in enterprise and data center environments. It is equipped with 48 Ethernet ports, providing plenty of connectivity options for devices and networks. Some key features and performance characteristics of the WS-C3550-48-SMI include:

  • High-speed switching: This Model supports up to 48 Gbps of switching capacity, allowing it to handle large amounts of data traffic without experiencing delays or bottlenecks.
  • Quality of Service (QoS): The WS-C3550-48-SMI supports QoS features, allowing users to prioritize certain types of traffic and ensure that mission-critical data is delivered in a timely manner.
  • Security: This Product supports advanced security features such as access control lists (ACLs) and authentication, helping to protect networks from unauthorized access and attacks.
  • Resilience: This Model has a number of features designed to improve network resilience and uptime, including redundant power supplies, hot-swappable components, and failover capabilities.
  • Management: This Model is a managed switch, meaning it can be configured and monitored remotely using a variety of management tools and protocols. This makes it easy to deploy and maintain in large networks.

Troubleshooting and Maintenance

The WS-C3550-48-SMI Cisco Catalyst 3550 48-port managed switch is designed to be easy to troubleshoot and maintain. The switch has a number of built-in diagnostic tools and features, such as a command-line interface (CLI) and a web-based management interface, that can be used to monitor and troubleshoot the switch. Additionally, the switch has a number of troubleshooting and maintenance features such as:

  • Error message logs: The switch keeps a record of system error messages, which can be useful for identifying and troubleshooting problems.
  • SNMP: Simple Network Management Protocol (SNMP) allows for monitoring and management of network devices and can be used to troubleshoot and resolve network issues.
  • RMON: Remote Monitoring (RMON) allows for monitoring and analyzing network traffic and can be used to troubleshoot and resolve network issues.
  • Port mirroring: Port mirroring allows you to duplicate network traffic from one port to another for monitoring and troubleshooting purposes.

It is also recommended to keep the switch software updated to the latest version to ensure that it has the most recent security patches, bug fixes, and feature enhancements.

Regular maintenance like cleaning the switch and checking the cables are also recommended to keep it running smoothly.

Power and Energy Efficiency

The WS-C3550-48-SMI is a Cisco Catalyst 3550 48-port managed switch that is designed to provide power and energy efficiency. The switch features Cisco EnergyWise technology, which allows it to monitor and control energy consumption of connected devices. It also has a number of power-saving features, such as the ability to automatically power down ports that are not in use, and the ability to adjust power levels based on the cable length. Additionally, the switch is designed to meet the Energy Star 2.0 standard for energy efficiency, which helps to reduce energy costs and minimize the environmental impact of the switch.

General Information about this Cisco WS-C3550-48-SMI

  • Manufacturer: Cisco
  • Model Number or SKU# WS-C3550-48-SMI
  • Product Line: Catalyst
  • Product Series: 3550
  • Product Type: Ethernet Switch

Interfaces / Ports for 48 Ports Ethernet Switch

  • Number of Ports: 48
  • Fast Ethernet Port: Yes
  • Interfaces/Ports: 48 x RJ-45 10/100Base-TX LAN
  • Interfaces/Ports: 1 x RJ-45 Console Management

Performance of Catalyst C3550 Managed Switch

  • Connectivity Media: Category 4 UTP 10Base-T
  • Connectivity Media: Category 3 UTP 10Base-T
  • Connectivity Media: Category 5 UTP 10/100Base-TX
  • Performance: 13.6GBPS Switching Fabric
  • Performance: 6.8GBPS Forwarding Bandwidth at Layer 2 and Layer 3
  • Performance: 10.1MBPS Forwarding Rate for 64-byte Packet

I/O Expansions of Ethernet Switch

  • Number of Expansion Slots: 2
  • Expansion Slots: (2 Total) GBIC
  • Modules: Not Included

Network & Communication

  • Address Table: 8K MAC Addresses


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


  • MTBF: 163000Hour

Power Description

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

Dimensions and Weight

  • Height: 1.8 inch
  • Width: 17.5 inch
  • Depth: 16.3 inch
  • Weight: 13 lbs

About Refurbished Products

Refurbished products are typically refurbished by an Original Manufacturer or an affiliate of the manufacturer or 3rd party facility. This product may have minor blemishes due to normal product usage and doesn't necessarily come with documentation and software unless indicated, but has been well tested and generally has never had any defects.

Different Types of Switches

Networking switches vary widely depending on the number of devices they can support, network bandwidth/speed, and form factor. Switches for small offices will have anything between 4 and 8 ports and can fit on a desk. For larger office network implementation, switches may have 24 ports, 48 ports, 96 ports, and 128 ports and are rack-mountable between 1U and 4U. Switches come in different types depending on the network speed and tasks they support. These include 40/100 Gbps, 10 Gigabit (up to 10000 Mbps), Gigabit Ethernet (up to 1000 Mbps), Power over Ethernet, and Fast Ethernet (10/100 Mbps).

Unmanaged Switches

The unmanaged switches offer fixed configurations on a plug-and-play basis. It is the most basic switch and there are a few choices in the market. These switches are affordable, but the basic features make them inappropriate for enterprise applications.

Managed Switches

The number of features and level of functionality improves with managed switches, making them ideal for enterprise and business applications. These switches are built with the command-line interface for ease of configuration. Equally, they support SNMP agents that come in handy when troubleshooting network issues.

The security on managed switches is better and will protect different types of traffic. Other features include support for virtual LANs, IP routing, and quality of service settings. Managed switches are more expensive compared to all other types of switches.

Smart Switches

Smart switches refer to switches that possess more features than those unmanaged switches but do not have the full features of managed switches. Smart switches are more cost-effective than managed switches.

Some of the limitations of the smart switches are a lack of telnet access support, Web GUIs, and a lack of many features for VLANs. They are affordable compared to a fully managed switch and are suitable for a smaller computer network.

Modular Switches

Modular switches allow the addition of expansion modules as the network expands. The expansion modules allow for more networked devices but are application-specific. They may include wireless access points, firewalls, or network analysis tools. The flexibility of a modular networking switch comes at a higher cost.


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