Cisco WS-C3550-48-EMI 48 Port Networking Switch
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WS-C3550-48-EMI Cisco Catalyst 3550 48-Ports 10/100 with Refurbished

Availability: In Stock
Part Number#: WS-C3550-48-EMI
List Price was: $730.77
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Short Description:
WS-C3550-48-EMI Catalyst Switch with 48-Ports 10/100 and 2 GBIC-based Ethernet EMI installedCertified | Made by Cisco | Refurbished
Product Condition:
Warranty provided by ALLHDD.COM:
90 Days

Deployment and Configuration of Ethernet Switch

To deploy and configure a WS-C3550-48-EMI Cisco Catalyst 3550 48-ports manageable switch, you will need to follow these general steps:

  • Connect the switch to a power source and turn it on.
  • Connect the switch to your network using Ethernet cables.
  • Connect to the switch using a console cable and a terminal emulation program, such as PuTTY.
  • Configure basic network settings, such as the hostname and IP address of the switch.
  • Configure VLANs, if necessary, to segment your network.
  • Configure port security to limit the number of MAC addresses that can be learned on a particular port.
  • Configure Quality of Service (QoS) to prioritize certain types of traffic.
  • Configure spanning tree protocol (STP) to prevent loops in the network.
  • Configure SNMP for management and monitoring.
  • Configure any advanced features that are required for your network, such as Link Aggregation Control Protocol (LACP) or Multicast.
  • Save the configuration to the switch's non-volatile memory (NVRAM) and/or a remote server.

It is important to note that the above steps are general and the specific configuration will depend on the network requirements and the organization's policies.

Switch Management and Configuration of Manageable Switch

  • Connect to the switch using a console cable and a terminal emulator program such as Putty.
  • Log in to the switch using the default username and password (username: cisco, password: cisco).
  • Once logged in, you will be in the privileged EXEC mode.
  • To configure the switch, enter the "configure terminal" command to enter the global configuration mode.
  • From here, you can configure various settings such as IP addresses, VLANs, and port settings.
  • To save your changes, use the "write memory" command.
  • To manage the switch, you can use the Cisco IOS commands such as "show running-config" to view the current configuration and "show interfaces" to view the status of the ports.
  • To remotely access the switch, you can configure a management IP address and enable SNMP or Telnet/SSH access.
  • To upgrade the switch's firmware, you can use the "copy tftp flash" command to copy the new firmware image from a TFTP server to the switch's flash memory.
  • To reboot the switch, use the "reload" command.
  • To exit the switch, use the "exit" command.

Network Connectivity and VLANs of 48 Ports Managed Switch

The WS-C3550-48-EMI Cisco Catalyst 3550 48-Ports Manageable Switch is a Layer 2 switch that supports both 10/100Mbps and Gigabit Ethernet connectivity. It has 48 Ethernet ports, with 24 of them supporting both 10/100Mbps and Gigabit Ethernet, and 24 supporting only 10/100Mbps. The switch also has 2 SFP-based Gigabit Ethernet uplink ports for connecting to other network devices or to the internet.

One of the key features of the WS-C3550-48-EMI is its support for VLANs (Virtual LANs). VLANs allow for the creation of multiple logical networks within a single physical network. This allows for increased security and segmentation of network traffic. The switch supports up to 256 VLANs and allows for the creation of VLANs based on port, MAC address, or protocol. This allows for granular control over network traffic and can help to prevent unauthorized access or data breaches.

In addition to VLANs, the WS-C3550-48-EMI also supports a number of other advanced features such as Quality of Service (QoS) for prioritizing network traffic, Port-based Access Control Lists (ACLs) for security, and Link Aggregation Control Protocol (LACP) for load balancing. These features make the WS-C3550-48-EMI an ideal switch for small to medium-sized businesses or enterprise environments that require advanced network management and security capabilities.

General Information

  • Manufacturer Cisco Systems, Inc
  • Manufacturer Part Number WS-C3550-48-EMI
  • Brand Name Cisco


  • Device Type Switch - 48 ports - managed - stackable
  • Enclosure Type Desktop - 1U
  • Interfaces Fast Ethernet
  • Ports 48 x 10/100 + 2 x GBIC
  • MAC Address Table Size 8K entries

Management and Protocol

  • Remote Management Protocol SNMP 1, SNMP 2, RMON 1, RMON 2, SNMP 3
  • Authentication Method RADIUS, TACACS+
  • Features Full duplex capability, IP-routing, manageable, stackable
  • Compliant Standards IEEE 802.3, IEEE 802.3u, IEEE 802.3z, IEEE 802.1D, IEEE 802.1Q, IEEE 802.3ab, IEEE 802.1p, IEEE 802.3x, IEEE 802.1w, IEEE 802.1x


  • RAM 64 MB - integrate
  • Flash Memory 16 MB flash
  • Built-in Devices LED panel
  • Status Indicators Link activity, port transmission speed, port duplex mode, bandwidth utilization %, power, link OK

Expansion / Connectivity

  • Interfaces 48 x 100Base-TX - RJ-45 1 x console - RJ-45 - management 2 x GBIC


  • Power Device Internal power supply
  • Voltage Required AC 120/230 V ( 50/60 Hz )
  • Power Consumption Operational 86 Watt
  • Features Redundant Power System (RPS) connector
  • Compliant Standards UL, cUL


  • Cables Included Serial adapter
  • MTBF 163,000 hours
  • Compliant Standards FCC Class A certified, CSA, UL, TUV GS, BSMI, cUL, EN 60950, EN55022, NOM, VCCI Class A ITE

Software / System Requirements

  • Software Included Enhanced Multilayer Software Image (EMI)

Environmental Parameters

  • Min Operating Temperature 32 °F
  • Max Operating Temperature 113 °F
  • Humidity Range Operating 10 - 85%
  • Max Altitude Operating 9840 ft
Product Condition:
Warranty provided by ALLHDD.COM:
90 Days

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.


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ALLHDD guarantees that the products will not have defects in material that will affect the product's functionality during the Standard Warranty Period. The warranty period starts when the merchandise/items from our warehouse.

What does ALLHDD.Com warranty cover?

30-days to 3 years warranty:

Replacement or refund. In the case of material defects, we will try to replace the product first. The product will be replaced before the expiration of the original warranty. For any failure of hardware, if we cannot process the replacement of the product(s)/model(s), we will refund the original selling/invoiced price. The shipping costs and sales tax, if any, are non-refundable. ALLHDD retains the right to decide whether the item(s) will process for replacement or refund.

What is not covered by our warranty?

The reason why our warranty does not cover any problem caused by the following conditions:

(a) misuse of hardware; accidental damage; carelessness product(s) damage; shock; temperature beyond the specification of any product; faulty installation; operation; modification of goods;

(b) any misuse outside the instructions in the user manual for any specific product;

(c) damaged caused by other hardware or equipment. The warranty will void if the item is returned with physical damage, damage to the retail box, removed from the box, counterfeit labels/labelled by them, or any modifications of internal and external covers. Data loss or damages to any other equipment we do not cover by our offered warranty.

What is the Manufacturer/Brand Warranty?

In general, a manufacturer's warranty service/support is a written guarantee to the buyer of a product. Its terms assure the replacement or repair of the product, if necessary, within a specified period after the purchase (2-5 years depending on the brand/manufacturer). It is typically included in the price of the product. Products are brand new and sealed and the original manufacturer box is complete with the Manufacturer's genuine warranty. For most of the brand new/retail products that come with the manual and box, exceptions may apply (i.e., Cisco, Juniper Networks).

For the server parts (i.e., Dell, HPE) to get Full coverage of the warranty server must have a full 3- 5 years warranty. However, ALLHDD.COM will cover the warranty duration if any Manufacturer doesn't support the advertised warranty and there is no refund for those.
Final Sale items are non-returnable/refundable in any situation. Any question? please ask our team before the shipment.

Important notes:

We can provide additional warranty service/support for any product you purchase from us if you need additional warranty coverage before finalizing the order from ALLHDD.Com. You need to ask in live chat/help or call us for more information.

Individual product warranty mentioned on each item product description page/detail page.

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Worldwide Shipping Options:

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UPS®/FedEx® Ground Shipping Canada

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Important notes:

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