Cisco WS-C2980G-A 80 Ports Switch
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Cisco WS-C2980G-A Catalyst 2980G 80 Ports Managed Switch Refurbished

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Part Number#: WS-C2980G-A
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Short Description:
WS-C2980G-A Catalyst 2980G Managed Switch 80 Ethernet Ports & 2 Gigabit GBIC Ethernet Switch network devices switch supports advanced features such as Quality of Service Quality of service (QoS) | Made by Cisco | Refurbished
Product Condition:
Warranty provided by ALLHDD.COM:
90 Days

Overview of WS-C2980G-A Catalyst 2980G

In the realm of networking, the WS-C2980G-A Catalyst 2980G Managed Switch stands out as a robust solution, offering 80 Ethernet ports and 2 Gigabit GBIC Ethernet ports. This managed switch module plays a crucial role in facilitating efficient data transfer and communication within a network. In this detailed exploration, we will delve into the features and functionalities of the WS-C2980G-A, with a special focus on its support for advanced features like Quality of Service (QoS).ures.

Ethernet Ports and Gigabit GBIC Ports

One standout feature of the WS-C2980G-A is its impressive array of 80 Ethernet ports. Ethernet ports serve as the interfaces through which devices connect to the network. Having 80 ports provides the capacity to connect numerous devices simultaneously, making this switch suitable for large-scale networks.

In addition to the Ethernet ports, the switch is equipped with 2 Gigabit GBIC (Gigabit Interface Converter) ports. Gigabit Ethernet is a standard that supports data transfer rates of 1 gigabit per second, significantly faster than traditional Ethernet. The inclusion of Gigabit GBIC ports enhances the switch's overall performance, especially when dealing with bandwidth-intensive tasks.

Advanced Features

Quality of Service (QoS)

One of the standout features of the WS-C2980G-A is its support for Quality of Service (QoS). QoS is a set of technologies that prioritize certain types of data traffic to ensure a consistent and reliable user experience. In a network with diverse applications and services, QoS becomes crucial for optimizing performance.

Importance of QoS

In a typical network, various types of data compete for bandwidth. Voice and video applications, for example, require low latency and high priority to maintain quality. QoS mechanisms implemented in the WS-C2980G-A allow administrators to prioritize such critical traffic, ensuring that essential applications receive the necessary resources for optimal performance.

QoS Implementation in WS-C2980G-A

The WS-C2980G-A incorporates QoS mechanisms to manage and prioritize traffic effectively. It utilizes different prioritization techniques, such as classifying and marking packets based on their importance. Administrators can define policies that allocate bandwidth to critical applications, preventing congestion and latency issues.

Managed Switch Capabilities

As a managed switch, the WS-C2980G-A offers a wide range of capabilities that empower network administrators to have granular control over the network. These capabilities include the ability to monitor traffic, configure virtual LANs (VLANs), and implement security measures.

Understanding Quality of Service (QoS)

Quality of Service involves several components and mechanisms that collectively contribute to the efficient handling of network traffic. These include:

  1. Traffic Classification: The switch can identify different types of traffic, such as voice, video, or data, and classify them based on predefined rules.
  2. Priority Queuing: QoS enables the creation of priority queues, ensuring that high-priority traffic is processed ahead of lower-priority traffic. This is crucial for time-sensitive applications like VoIP (Voice over Internet Protocol) and video streaming.
  3. Bandwidth Reservation: Network administrators can reserve a certain amount of bandwidth for specific applications or services, guaranteeing a minimum level of performance.
  4. Packet Scheduling: QoS allows for the scheduling of packet transmission based on priority, preventing congestion and ensuring timely delivery of critical data.

Benefits of QoS in WS-C2980G-A

The implementation of QoS in the WS-C2980G-A brings several tangible benefits to the network:

  • Improved Performance: By prioritizing critical traffic, QoS ensures that essential applications experience minimal latency and optimal performance.
  • Efficient Bandwidth Utilization: QoS helps in efficiently utilizing available bandwidth by allocating resources based on priority, preventing congestion and bottlenecks.
  • Enhanced User Experience: Applications such as video conferencing and real-time communication benefit from QoS, providing users with a seamless and reliable experience.
  • Adaptability to Diverse Traffic: In networks with a mix of data types, QoS ensures that each type gets the necessary resources, maintaining a balance between different applications.


The WS-C2980G-A Cisco Catalyst 2980G 80-port managed switch is designed to provide high performance and reliability for enterprise networks.

In terms of performance, the switch supports Gigabit Ethernet speeds on all of its 80 ports. This allows for fast data transfer between devices connected to the switch. The switch also supports advanced features such as Quality of Service (QoS) which allows for the prioritization of different types of network traffic to ensure that critical applications have the bandwidth they need. Additionally, the switch supports jumbo frames, which allows for larger packet sizes and can improve performance for certain types of network traffic.

In terms of reliability, the switch supports several features to ensure that the network remains up and running. It supports redundant power supplies and fans to provide redundancy in case of a failure. The switch also supports the Cisco IOS Software, which provides a variety of features to help ensure network uptime. Additionally, the switch can be stacked with other Cisco Catalyst 2980G switches for increased network scalability, which provides more redundancy and resiliency to the network.

Compliant Standards

The model Cisco Catalyst 2980G 80-port managed switch is compliant with a variety of industry standards. Compliance with these standards ensures that the switch is compatible with other devices in the network and that it meets certain performance and security requirements.

Some of the compliant standards for the WS-C2980G-A include:

  • IEEE 802.3: This is the standard for Ethernet, which defines the physical and data link layers of the OSI model. The switch is compliant with various IEEE 802.3 standards, including 802.3u (Fast Ethernet) and 802.3ab (Gigabit Ethernet)
  • IEEE 802.1D: This is the standard for spanning tree protocol (STP), which is used to prevent loops in a network.
  • IEEE 802.1Q: This is the standard for VLAN tagging, which is used to segment a network into smaller virtual networks.
  • IEEE 802.1p: This is the standard for Quality of Service (QoS) on a LAN, which allows administrators to prioritize different types of network traffic.
  • IEEE 802.3x: This is the standard for flow control, which allows the switch to control the rate at which it receives data in order to prevent data loss.
  • IEEE 802.3ad: This is the standard for Link Aggregation Control Protocol (LACP) which is used to bundle multiple physical links together to form a single logical link, providing redundancy and increased bandwidth.
  • SNMP, RMON: These are the standard for network management, which allows the switch to be monitored and configured remotely.
  • IEEE 802.1X: This is the standard for port-based network access control, which is used to control access to the network based on the identity of the device or user attempting to access it.

General Information about Cisco WS-C2980G-A Managed Switch

  • Manufacturer: Cisco
  • Part Number or SKU#: WS-C2980G-A
  • Product Line: Catalyst
  • Product Series: 2900
  • Product Model: 2980G
  • Product Name: Catalyst 2980G Ethernet Switch
  • Product Type: Ethernet Switch

Technical Information for this 80 Ports Ethernet Switch

  • Total Number of Network Ports: 80
  • Number of Network (RJ-45) Ports: 80
  • Port/Expansion Slot Details: 80 x Fast Ethernet Network
  • Port/Expansion Slot Details: 2 x Gigabit Ethernet Expansion Slot

Performance of Catalyst 2980G Managed Switch

  • Media Type Supported: Twisted Pair
  • Ethernet Technology: Fast Ethernet
  • Network Technology: 10/100Base-TX

In short, the WS-C2980G-A Catalyst 2980G Managed Switch is a versatile networking device that goes beyond basic connectivity. With its impressive array of 80 Ethernet ports and 2 Gigabit GBIC ports, it provides a solid foundation for building and expanding network infrastructures. The incorporation of advanced features, particularly Quality of Service (QoS), elevates its capabilities, making it suitable for environments where efficient data transfer and network optimization are paramount. As technology continues to evolve, the WS-C2980G-A stands as a reliable and adaptable solution for meeting the demands of modern networking scenarios.

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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