Cisco WS-C3750X-48PF-L Layer 3 Switch
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WS-C3750X-48PF-L Cisco Catalyst 3750X 48 Ports Manageable New

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Part Number#: WS-C3750X-48PF-L
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Short Description:
WS-C3750X-48PF-L Catalyst 3750X 48 Ports 10/100/1000Base-T RJ-45 Power Over Ethernet Plus (PoE+) Manageable Layer 3 Rack-mountable 1U Stackable Ethernet Switch with 2x Expansion Slots | Made by Cisco | New Factory Sealed
Product Condition:
New Retail Factory Sealed
Warranty provided by ALLHDD.COM:
90 Days

High Performance

The WS-C3750X-48PF-L Cisco Catalyst 3750X 48-port switch is a high-performance, stackable switch that is designed for use in enterprise-level networking environments.

As a layer 3 switch, the WS-C3750X-48PF-L is capable of performing advanced routing functions in addition to the basic switching capabilities of a layer 2 switch. This makes it well-suited for use in environments where network segmentation and traffic management are important considerations.

In terms of performance, This Product is capable of providing high-speed connectivity with a switching capacity of up to 160 Gbps and a forwarding rate of up to 95 Mpps. It also supports stackable architecture, which allows you to connect multiple switches together to create a single, logical unit, and energy-efficient Ethernet (EEE), which helps to reduce power consumption by dynamically adapting to the traffic patterns on the network.


This Product Cisco Catalyst 3750X 48-port switch is a high-performance Ethernet switch that is compatible with a wide range of networking equipment and devices. It is designed to work with other Cisco networking products, such as routers, switches, and access points, and it is also compatible with third-party devices that support the industry-standard IEEE 802.3 Ethernet protocol.

In terms of software compatibility, This Model is compatible with a range of Cisco IOS software versions, including IOS XE, which is the latest version of Cisco's network operating system. This allows you to take advantage of the latest features and capabilities offered by Cisco's software, including advanced Quality of Service (QoS) capabilities, security features, and energy-efficient Ethernet (EEE).

Implementing Quality of Service

The Cisco Catalyst 3750X series switches, including the WS-C3750X-48PF-L, support Quality of Service (QoS) to provide better network performance by prioritizing traffic and ensuring that critical applications receive the necessary bandwidth and latency. Implementing QoS on the WS-C3750X-48PF-L switch involves several steps, which I will outline below:

  • Define Traffic Classes: The first step in implementing QoS is to identify and define the different types of traffic that traverse the network. This can include voice, video, data, and other applications. Once these traffic classes are defined, the next step is to map them to specific QoS policies.
  • Create QoS Policies: A QoS policy defines the treatment that each traffic class will receive on the network. The policy can include the following parameters:
  • Classification: This defines which traffic class the policy applies to.
  • Marking: This sets the priority of the traffic class based on its importance.
  • Policing: This limits the amount of traffic that can be sent for a specific traffic class.
  • Shaping: This limits the amount of traffic that can be sent for a specific traffic class over a specific period.
  • Queueing: This sets the priority of traffic classes in a queue.
  • Apply QoS Policies: Once the policies are defined, they can be applied to specific interfaces on the switch. This ensures that traffic is classified and prioritized correctly as it enters and leaves the network.
  • Monitor and Fine-Tune: Finally, it is important to monitor the QoS policies to ensure that they are working as expected. You can use tools like NetFlow and SNMP to collect data on network traffic and performance. If necessary, you can fine-tune the policies to ensure optimal network performance.

General Information about this Cisco WS-C3750X-48PF-L

  • Manufacturer: Cisco
  • Model Number or SKU# WS-C3750X-48PF-L
  • Product Line: Catalyst
  • Product Series: 3750-X
  • Product Type: Ethernet Switch

Interfaces / Ports of L3 Ethernet Switch

Performance of 48 Ports Switch

  • Ethernet Technology: Gigabit Ethernet
  • Network Technology: 10/100/1000Base-T

I/O Expansions

  • Number of Total Expansion Slots: 2

Network & Communication

  • Layer Supported 3

Management & Protocols

  • Manageable: Yes


  • RAM: 256 MB
  • Flash Memory: 128 MB Flash

Power Description

  • Power Source: Power Supply
  • Redundant Power Supply: Yes

Dimensions & Weight

  • Compatible Rack Unit: 1U
  • Form Factor: Rack Mountable
  • Height: 1.8 Inch
  • Width: 17.5 Inch
  • Depth: 19.5 Inch
  • Weight: 16.75 Lbs


  • Environmentally Friendly: Yes
  • Environmental Certification: RoHS-5

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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