Description

The A2H124-24FX P0973BJ is a robust, fully managed layer 2/3 Ethernet switch from the Enterasys (now Extreme Networks) C2/C3 series, specifically designed for deployment in demanding industrial environments. This 24-port switch is engineered to deliver reliable, secure, and high-performance network connectivity for critical automation and control system applications. Unlike standard commercial switches, the Enterasys A2H124-24FX P0973BJ is built to operate reliably in conditions characterized by extreme temperatures, shock, vibration, and electromagnetic interference (EMI), which are commonplace on factory floors, in power substations, and other harsh settings. A key feature of this model is its 24 100BASE-FX fiber optic ports, which provide inherent immunity to EMI and allow for long-distance network segments, making it ideal for creating a resilient backbone to connect distributed controllers, I/O systems, and other devices across a large facility. The A2H124-24FX P0973BJ offers advanced management, security, and Quality of Service (QoS) features, ensuring deterministic data delivery for time-sensitive industrial protocols and forming a cornerstone of a modern Industrial Internet of Things (IIoT) infrastructure.

A2H124-24FX P0973BJ ENTERASYS

Technical Specifications

Parameter Name	Parameter Value
Product Model	A2H124-24FX P0973BJ
Manufacturer	Enterasys (Extreme Networks)
Product Type	Managed Industrial Ethernet Switch
Total Ports	24
Port Type	24 x 100BASE-FX (Multimode, SC connectors)
Switching Capacity	8.8 Gbps
Forwarding Rate	6.55 Mpps
Management	Layer 2/3 Lite (Static Routing, RIP v1/v2)
Memory	64 MB DRAM, 16 MB Flash
Power Supply	24 V DC (Redundant input option)
Operating Temperature	-40°C to 75°C (-40°F to 167°F)
Ingress Protection	IP30 (metal housing)
Mounting	DIN-rail or panel mountable
Safety/EMC Certifications	UL 60950-1, IEC 61000-6-2, IEC 61000-6-4, FCC Part 15 Class A

Main Features and Advantages

The Enterasys A2H124-24FX P0973BJ is distinguished by its ruggedized design and advanced networking capabilities. Its primary advantage is the all-fiber optic interface, which completely eliminates concerns about data corruption caused by ground loops, voltage transients, and electromagnetic interference, ensuring flawless data transmission in the noisiest electrical environments. The switch is built to withstand extreme operating temperatures and mechanical stress, guaranteeing network availability where standard switches would fail. It offers comprehensive Layer 2 switching features including IEEE 802.1Q VLANs for network segmentation, IEEE 802.1p QoS for prioritizing critical control traffic, and Spanning Tree Protocol (STP/RSTP/MSTP) for creating redundant network loops that recover from link failures in milliseconds.

For security and management, the A2H124-24FX P0973BJ provides ACLs (Access Control Lists), port security, and support for SNMP, RMON, and a web-based management interface, giving network administrators complete visibility and control. Its support for Layer 3 “Lite” routing (including static routes and RIP) allows for efficient network segmentation and inter-VLAN routing within the industrial zone, reducing latency and optimizing traffic flow. The support for redundant 24V DC power inputs ensures continuous operation even if one power source fails. These features make the switch not just a simple connector, but an intelligent, resilient, and secure node in the industrial network architecture.

Application Field

The Enterasys A2H124-24FX P0973BJ is deployed in any industry requiring a reliable, managed network backbone in a harsh environment. In manufacturing and factory automation, it forms the core of a cell/area zone network, connecting PLCs, robots, HMIs, and drives across long distances with its fiber optic links, immune to the EMI from high-power machinery. In the power utility industry, it is used in substations for SCADA communications and for networking intelligent electronic devices (IEDs) for grid protection and control. For oil and gas applications, it provides connectivity along pipelines and on offshore platforms where environmental conditions are severe.

It is also ideal for transportation systems, such as railway signaling and tunnels, and in water/wastewater treatment plants for connecting distributed process control systems across large sites. The A2H124-24FX P0973BJ is particularly well-suited for applications where electrical isolation, long-distance coverage, and high noise immunity are mandatory requirements for network integrity and continuous process operation.

A2H124-24FX P0973BJ ENTERASYS

Related Products

A2H124-24TX P0973BJ: The copper counterpart with 24 10/100BASE-TX RJ45 ports.

A2H112-12FX/TX: A smaller 12-port industrial switch from the same series.

A2H124-24FX/TX P5973BJ: A potential variant with different power supply or connector options.

I-SMG2000 Series: Other models in the Enterasys Industrial SmartSwitch family.

ExtremeXOS® Operating System: The network operating system that powers the management features of these switches.

VH-240DC: A typical 24V DC industrial power supply used to power the switch.

ExtremeCloud IQ / Network Management: Software for centralized management of the network infrastructure.