Cisco WS-C3920 24 Ports Switch
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Cisco WS-C3920 24 Ports Token Ring Switch Catalyst 3920 Refurbished

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Part Number#: WS-C3920
List Price was: $1615.38
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Short Description:
WS-C3920 Catalyst 3920 24 Ports Token Ring Switch 1 x Stacking Module 24 x Token Ring Local Area Network (LAN) | Made by Cisco | Refurbished
Product Condition:
Warranty provided by ALLHDD.COM:
90 Days
Product Overview of the Cisco 24 Ports Token Ring Switch

The Cisco WS-C3920 24 Ports Token Ring Switch Catalyst 3920 is a network switch manufactured by Cisco Systems. This device is designed to facilitate the transfer of data between multiple devices within a computer network. Specifically, the WS-C3920 model is equipped with 24 ports and supports the Token Ring network protocol.

Understanding Network Switches

Before delving into the specifics of the Cisco WS-C3920, it's essential to understand the role of network switches in computer networking. A network switch is a hardware device that connects multiple devices, such as computers, printers, and servers, within a local area network (LAN). It operates at the data link layer of the OSI model and is responsible for forwarding data packets between devices. The Cisco WS-C3920 24-Port Token Ring Switch Catalyst 3920 is a networking device designed to support Token Ring technology. As part of Cisco's Catalyst series of switches, it offers a range of features and capabilities tailored to the needs of Token Ring networks.

Token Ring Network Protocol

The Token Ring network protocol is a communication standard used in local area networks. Unlike Ethernet, which uses a contention-based access method, Token Ring utilizes a token-passing mechanism. In a Token Ring network, devices are arranged in a logical ring topology, and a token circulates the network. Only the device holding the token can transmit data, ensuring orderly communication and minimizing collisions.

Features of Cisco WS-C3920
24 Ports

The switch is equipped with 24 ports, enabling simultaneous connections for multiple devices. This high port density is well-suited for medium to large-scale network deployments.

Token Ring Support

As indicated by its name, the WS-C3920 supports the Token Ring network protocol. It is compatible with Token Ring devices and can seamlessly integrate into existing Token Ring networks.

Layer 2 Switching

Operating at the data link layer (Layer 2) of the OSI model, the switch can forward data packets based on MAC addresses. This facilitates efficient communication between devices within the same LAN segment.

Redundancy and Resilience

Cisco switches are known for their robustness and reliability. The WS-C3920 incorporates features such as redundant power supplies and hot-swappable modules to minimize downtime and ensure uninterrupted network operation.

Quality of Service (QoS)

QoS mechanisms prioritize certain types of traffic over others, ensuring optimal performance for critical applications. The WS-C3920 supports QoS features such as traffic classification, bandwidth management, and congestion avoidance.

Benefits of Cisco WS-C3920

Deploying the Cisco WS-C3920 brings a plethora of benefits to organizations seeking reliable, high-performance networking solutions.

Enhanced Performance

The WS-C3920's high port density and advanced switching capabilities contribute to improved network performance and reduced latency, ensuring seamless communication across the network.


With support for up to 24 ports, the WS-C3920 can effortlessly accommodate growing network demands, scaling alongside the organization's evolving requirements without compromising performance.


Designed to seamlessly integrate into existing Token Ring networks, the WS-C3920 preserves previous infrastructure investments and minimizes disruption during deployment, thereby facilitating a smooth transition to the new switch.


Cisco switches are synonymous with reliability and durability. The WS-C3920 is built to withstand rigorous usage and maintain stable performance over time, providing organizations with a dependable networking solution they can rely on.


Cisco prioritizes security, offering robust features to protect against unauthorized access, malicious attacks, and data breaches. The WS-C3920 includes access control lists (ACLs), port security measures, and secure management interfaces, ensuring the integrity and confidentiality of network data.

Use Cases for Cisco WS-C3920

The versatility and reliability of the Cisco WS-C3920 make it suitable for deployment across various industries and scenarios.

Enterprise Networks

Large enterprises with extensive networking needs can leverage the WS-C3920 to connect multiple departments, offices, and facilities within a unified network infrastructure, facilitating seamless communication and collaboration.

Educational Institutions

Schools, colleges, and universities can benefit from the WS-C3920's scalability and reliability to support the connectivity needs of students, faculty, and administrative staff, ensuring uninterrupted access to educational resources and administrative systems.

Government Agencies

Government organizations require secure and resilient network infrastructure to support critical operations and ensure seamless communication between departments and agencies. The WS-C3920 provides the performance and security features necessary to meet these requirements.

Healthcare Facilities

Hospitals, clinics, and healthcare providers rely heavily on network connectivity to access electronic health records (EHRs), medical imaging systems, and communication tools. The WS-C3920's reliability and performance make it an ideal choice for supporting these critical healthcare applications.

Financial Institutions

Banks, insurance companies, and other financial institutions must maintain secure and high-performance networks to process transactions, protect sensitive data, and comply with regulatory requirements. The WS-C3920 offers the robust security and performance necessary to meet these stringent demands.

General Information about the Cisco WS-C3920
  • Manufacturer: Cisco
  • Model Number or SKU# WS-C3920
  • Product Line: Catalyst
  • Product Series: 3900
  • Product Model: 3920
  • Product Type: Token Ring Switch
Interfaces/Ports of the 24 Ports Switch
  • Number of Ports: 24
  • Token Ring Port: Yes
  • Interfaces/Ports: 1 x DB-9 RS-232 Console Management
I/O Expansions
  • Number of Expansion Slots: 1
  • Expansion Slots: (1 Total) Stacking Module
Network & Communication
  • Layer Support: Layer 2
  • Number of Stacks: 8

Finally, the Cisco WS-C3920 24 Ports Token Ring Switch Catalyst 3920 is a versatile and reliable networking solution designed to meet the demands of Token Ring networks. With its advanced features, scalability, and robustness, the WS-C3920 offers significant benefits to organizations across various industries. Whether deployed in enterprise environments, educational institutions, government agencies, healthcare facilities, or financial institutions, the WS-C3920 provides the performance, reliability, and security required for modern networking applications. By investing in the Cisco WS-C3920, organizations can build a solid foundation for their network infrastructure and ensure seamless connectivity for their users and applications.

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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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.

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(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).

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