Cisco C9300-24U-A Ethernet Switch
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C9300-24U-A Cisco 24 Ports Manageable Switch Refurbished

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Short Description:
C9300-24U-A Catalyst 9300 24 Ports Universal Power Over Ethernet (UPoE), Network Advantage 24X Gigabit Ethernet Manageable Twisted Pair 2 Layer Supported Rack-mountable Switch | Made by Cisco | Refurbished
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Warranty provided by ALLHDD.COM:
90 Days

Product Overview of the Cisco C9300-24U-A Catalyst 9300 24 Ports Ethernet Switch

The Cisco C9300-24U-A Catalyst 9300 Series represents a pinnacle in networking technology, offering a blend of innovation and reliability. Specifically, the C9300-24U-A model is designed with 24 Universal Power Over Ethernet (UPoE) ports, Network Advantage features, and exceptional manageability. In this detailed guide, we delve into the specifics of the Cisco C9300-24U-A, exploring its technical specifications, capabilities, and how it stands as a powerhouse for modern networking infrastructures.

Overview of Cisco C9300-24U-A Catalyst 9300:

The Cisco C9300-24U-A is part of the Catalyst 9300 Series, renowned for its adaptability and robustness. As a rack-mountable switch, it provides a myriad of features suitable for diverse networking scenarios. With its 24 UPoE ports, Network Advantage capabilities, and impeccable manageability, this switch delivers a potent solution for organizations seeking high-performance networking.

24 Universal Power Over Ethernet (UPoE) Ports:

The standout feature of the Cisco C9300-24U-A is its 24 Universal Power Over Ethernet (UPoE) ports. These ports provide a unique capability by delivering higher power to connected devices compared to standard PoE. With UPoE, devices such as advanced IP phones, high-performance wireless access points, and surveillance cameras can draw increased power, eliminating the need for separate power sources. This feature simplifies installations and enhances the flexibility of device placement within the network.

Network Advantage Features for Enhanced Capabilities:

The Network Advantage feature set of the Cisco C9300-24U-A encompasses a range of functionalities that elevate its capabilities. These features include advanced security protocols, enhanced Quality of Service (QoS), and comprehensive management tools. Security protocols like MACsec encryption ensure data confidentiality, while QoS mechanisms prioritize critical applications, optimizing network performance. Additionally, robust management tools streamline network administration, offering a holistic view of the network and enabling efficient troubleshooting.

Manageability and Ease of Deployment:

The manageability of the Cisco C9300-24U-A contributes significantly to its appeal. The switch is designed to be user-friendly, with intuitive interfaces and tools that simplify deployment and ongoing management. Whether it's configuring ports, monitoring traffic, or diagnosing issues, the switch's management capabilities empower network administrators to efficiently oversee and maintain the network infrastructure.

Rack-Mountable Design for Space Efficiency:

The rack-mountable design of the Cisco C9300-24U-A enhances space efficiency in networking environments. It allows for easy installation within standard racks, optimizing space utilization in data centers or network closets. This design not only facilitates organized cable management but also centralizes control and maintenance of networking equipment, contributing to an efficient and accessible infrastructure.

Gigabit Ethernet Connectivity for High-Speed Data Transfer:

The Cisco C9300-24U-A offers 24 Gigabit Ethernet ports, ensuring high-speed data transfer across the network. Gigabit Ethernet delivers data at a rate of 1 gigabit per second, enabling swift and reliable communication between devices. This capability is fundamental for supporting bandwidth-intensive applications, facilitating seamless data flow within the network infrastructure.

Layer 2 Supported Switch for Efficient Networking:

Operating as a Layer 2-supported switch, the Cisco C9300-24U-A efficiently manages data traffic within the network. Layer 2 functionality focuses on forwarding data based on MAC addresses, enabling efficient communication between devices within the same network segment. This layer of the OSI model ensures optimized data transmission, contributing to the overall performance and reliability of the network.

More Information

The Cisco Catalyst 9300 series is a line of enterprise-class network switches that is designed for organizations of all sizes. The model is a specific model within this series, and it is a 24-port switch that supports UPoE+ (Universal Power over Ethernet Plus).

UPoE+ is a Cisco proprietary technology that provides up to 60W of power per port, which is significantly more than the standard PoE (Power over Ethernet) specifications of 30W. This allows the C9300-24U-A to power devices such as high-end IP phones, wireless access points, and video cameras, which typically require more power than standard PoE can provide.

The switch also features twisted pair ports which support a variety of connection options such as 10/100/1000Mbps speeds, and also some new features such as 2.5/5/10Gbps speeds.

The switch is also a Layer 2 manageable switch, which means it can perform a variety of functions at the data link layer of the OSI model, such as creating and managing VLANs, port security, and link aggregation. Additionally, the switch supports advanced features such as Quality of Service (QoS), Link Layer Discovery Protocol (LLDP), and Power over Ethernet Plus (PoE+).

The switch can be managed via different options as well as Network management software as Cisco DNA Center which provides more granular control, monitoring, and automation capabilities. Or using a command line interface (CLI) and Simple Network Management Protocol (SNMP)


The Cisco Catalyst 9300 24-Port UPoE+ is a high-performance switch that is designed to handle the demands of enterprise networks. The switch is built on the Cisco Silicon One platform, which provides a high-performance, programmable architecture that can handle a large number of packets per second (PPS) and concurrent sessions.

One of the key performance features of the C9300-24U-A is its high switching capacity. The switch is capable of delivering a switching capacity of up to 1.28 Terabits per second (Tbps). This allows the switch to handle a large number of concurrent connections and high-bandwidth applications, such as video streaming and virtual desktop infrastructure (VDI).

The model also provides a high level of availability. The switch supports various features such as Cisco StackWise-480 and StackPower, which help to increase the availability of the switch and the network as a whole. StackWise-480 allows multiple switches to be connected and managed as a single entity, providing increased availability and scalability. StackPower allows for power to be shared between switches so that if one switch fails, the others can provide power to ensure that the network remains up and running.

In terms of throughput, the switch can support up to 128 Gbps full-duplex throughput, ensuring that the network can handle a high level of traffic.

In terms of energy efficiency, the model supports UPOE (up to 480W) and also has an Energy Efficient Ethernet (EEE) feature which helps in reducing energy consumption by monitoring traffic levels and putting the switch into a lower-power state when the traffic level is low.

Reliability of L2 Switch

The Cisco Catalyst 9300 24-Port UPoE+ is a highly reliable switch that is designed for enterprise networks. It provides a number of features and technologies that can help to increase the availability and resilience of a network.

One important aspect of the switch's reliability is its support for stacking. When multiple model switches are connected together in a stack, they can be managed as a single entity. This allows for increased availability and scalability as the stack can continue to function even if one of the switches in the stack goes down. The stack also has redundancy in terms of power supplies and cooling, providing an extra layer of protection for the network.

The switch also supports advanced redundancy protocols such as Hot Standby Router Protocol (HSRP) and Virtual Router Redundancy Protocol (VRRP) which can help to ensure that network traffic is still able to reach its destination even if one of the switches in the network goes down. This can help to minimize the amount of downtime caused by a switch failure.

Additionally, the switch supports Cisco DNA Advantage which provides Network-wide visibility and control and automates and simplifies network management, this can help in identifying the issues and proactively troubleshooting the network.

In terms of hardware reliability, the C9300-24U-A is built to a high standard, with a number of redundant components such as multiple power supplies and fans to ensure that the switch can continue to operate even if one of these components fails.

General Information about this Cisco C9300-24U-A

  • Manufacturer: Cisco
  • Part Number or SKU# C9300-24U-A
  • Product Line: Catalyst
  • Product Series: 9300
  • Product Model: C9300-24U
  • Product Type: Ethernet Switch

Interfaces/Ports for 24 Ports Switch

  • Total Number of Network Ports 24
  • Uplink Port Yes
  • Modular No
  • Stack Port Yes
  • Port/Expansion Slot Details 24 x Gigabit Ethernet Network

Performance of Layer 2 Switch

  • Media Type Supported Twisted Pair
  • Ethernet Technology Gigabit Ethernet
  • Network Technology 10/100/1000Base-T

Network & Communication

  • Layer Supported 2

Management & Protocols

  • Manageable Yes
  • Power Over Ethernet (PoE): UPOE
  • PoE Budget: 830 W
  • MAC Address Table Size: 32000 entries
  • Jumbo Frame Support: 9198 bytes
  • Routing Protocol: OSPF, IS-IS, RIP-1, RIP-2, BGP, EIGRP, HSRP, IGMP, VRRP, PIM-SM, OSPFv3, PIM-SSM, MSDP, policy-based routing (PBR), RIPng
  • Remote Management Protocol: SNMP 1, RMON 1, RMON 2, SNMP, SNMP 3, SNMP 2c, CLI, NETCONF, RESTCONF
  • Encryption Algorithm: 128-bit AES
  • DHCP support, trunking, Syslog support, full duplex mode, Stateful switchover (SSO), Class-Based Weighted Fair Queuing (CBWFQ), Weighted Random Early Detection (WRED), Spanning Tree Protocol (STP) support, Access Control List (ACL) support, Quality of Service (QoS), Non-Stop Routing (NSR), Remote Switch Port Analyzer (RSPAN), Management Information Base (MIB), Cisco StackWise-480 technology, Cisco StackPower technology, Flexible NetFlow (FNF), Multicast Source Discovery Protocol (MSDP), 802.1x authentication, 16MB packet buffer, FTP client, MACsec support, 3 fans, Control plane protection (CoPP), Virtual Extensible LAN (VXLAN), Application Visibility and Control (AVC), Source-Specific Multicast (SSM), integrated Wireshark, VLAN Double Tagging (Q-in-Q), Ethernet over MPLS (EoMPLS), Hierarchical Virtual Private LAN Service (H-VPLS), Private VLAN, Layer 3 VPN (L3VPN) support, Encapsulated Remote SPAN (ERSPAN), Security Group Tag (SGT) caching, Security Group Access Control List (SGACL), IT Service Management (ITSM) integration, third-party IP Address Management (IPAM) integration
  • RAM: 8 GB
  • Flash Memory: 16 GB
Power Description
  • Power Source: Power Supply
  • Redundant Power Supply Supported: No
Environmental Parameters
  • Min Operating Temperature: 23 °F
  • Max Operating Temperature: 113 °F
  • Humidity Range Operating: 5 - 90% (non-condensing)
  • Min Storage Temperature: -40 °F
  • Max Storage Temperature: 158 °F
  • Humidity Range Storage: 5 - 90% (non-condensing)
  • MTBF: 238,410 hours
  • Compliant Standards: CISPR 22 Class A, CISPR 24, EN 61000-3-2, EN 61000-3-3, EN55024, EN50082-1, EN 61000-6-1, EN 61000-4-4, EN 61000-4-2, EN 61000-4-3, EN 61000-4-6, CCC, ICES-003 Class A, EN 61000-4-5, UL 60950-1, IEC 60950-1, EN 60950-1, RoHS, AS/NZS 3548 Class A, BSMI Class A, VCCI Class A, EN 55022 Class A, FCC CFR47 Part 15 A, EN 300 386, TVCN 7317, VCCI V-3/2009 Class A, CAN/CSA-C22.2 No. 60950-1

In summary, the Cisco C9300-24U-A Catalyst 9300 Series with 24 Ports Universal Power Over Ethernet (UPoE) emerges as a powerhouse for modern networking requirements. With its UPoE capabilities, Network Advantage features, manageability, rack-mountable design, Gigabit Ethernet connectivity, and Layer 2 support, this switch caters to the diverse needs of organizations seeking robust and scalable networking solutions. Whether it's empowering devices with increased power, ensuring network security, optimizing data transfer speeds, or simplifying network management, the Cisco C9300-24U-A stands as a testament to Cisco's commitment to delivering cutting-edge networking technology. As businesses navigate the complexities of modern connectivity, investing in a switch of this caliber becomes integral to establishing a resilient and efficient networking infrastructure.

Product Condition:
Warranty provided by ALLHDD.COM:
90 Days

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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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