The Enterasys A4H124-24FX P0973JN is a fully managed, high-density 24-port Fast Ethernet fiber optic switch from Enterasys Networks (now part of Extreme Networks). This switch is engineered to create robust, deterministic, and electrically immune network backbones for industrial automation, process control, and enterprise edge applications.
In a large-scale water treatment plant, PLCs and RTUs are distributed across vast areas, from intake pumps to chemical dosing stations and filter beds. Connecting these with copper Ethernet is susceptible to lightning strikes and electrical noise from high-power motors. The Enterasys A4H124-24FX P0973JN is deployed as a central aggregation switch. Its 24 fiber optic ports connect to remote fiber transceivers, creating a star-topology network that is completely immune to EMI/RFI, ensuring zero data corruption and continuous, reliable communication for the entire SCADA system.
Main Parameters | Value/Description |
Product Model | Enterasys A4H124-24FX P0973JN |
Manufacturer | Enterasys Networks (Extreme Networks) |
Product Category | Fully Managed Industrial Ethernet Switch |
Total Ports | 24 |
Port Details | 24 x 100BASE-FX (Multimode Fiber, SC Duplex Connectors) |
Data Rate | Fast Ethernet (100 Mbps) per port |
Management | Layer 2 Fully Managed (VLAN, QoS, IGMP Snooping, Link Aggregation) |
Power Supply | Redundant, hot-swappable AC or DC power inputs (For maximum uptime) |
Enclosure | 1U Rack-mountable, Robust metal housing |
Operating Temperature | 0°C to 50°C (Standard commercial/light industrial range) |
Key Feature | Full fiber optic isolation for superior noise immunity |
· •Innovation Point 1: High-Density All-Fiber Design for Complete Electrical Isolation. The A4H124-24FX P0973JN's 24 dedicated fiber ports provide the highest port density in a 1U form factor for its class. This all-fiber design eliminates ground loops and provides complete galvanic isolation, making it impervious to the most severe electromagnetic interference found in industrial settings.
· •Innovation Point 2: Advanced Traffic Management for Deterministic Networks. Beyond simple connectivity, this switch offers sophisticated Layer 2 features. Quality of Service (QoS) ensures time-critical control system data (e.g., from a PLC to an HMI) is prioritized over regular data traffic, while IGMP Snooping efficiently manages multicast traffic from devices like network cameras.
· •Innovation Point 3: High-Availability Architecture with Redundant Power. The switch supports hot-swappable, redundant power supplies. This N+1 redundancy is critical for 24/7 operations, allowing a failed power supply to be replaced without any network downtime, ensuring continuous data flow for critical control systems.
A tire manufacturing plant was plagued by intermittent network failures on its production line, causing automated guided vehicles (AGVs) and robotic arms to lose communication. The issue was traced to EMI from large induction motors. The plant replaced copper-based switches with the Enterasys A4H124-24FX P0973JN to create a fiber optic backbone. The network instability was completely eliminated. The managed features allowed the IT team to segment the control network (VLANs), leading to a 40% reduction in network-related production stoppages and a significant increase in overall equipment effectiveness (OEE).
· •Enterasys C3G124-48: A 48-port Gigabit stackable switch for the wiring closet, which can aggregate end devices and connect via fiber uplinks to the A4H124-24FX backbone.
· •Enterasys A2H254-16 P0973BK: A Layer 3 Gigabit switch that can act as a core routing node, with the A4H124-24FX connecting to it to extend the fiber network to various plant areas.
· •Enterasys SSAv2 Security Applications: Software that integrates with the switch to provide advanced network access control and threat response, securing the endpoints connected to the A4H124-24FX.
· •Various Media Converters: Devices that can be used with the A4H124-24FX to connect legacy copper-based equipment to the high-performance fiber backbone.
· •ExtremeXOS® Operating System: The robust, single-image operating system that powers the A4H124-24FX, ensuring consistent functionality and manageability.
Installation of the Enterasys A4H124-24FX P0973JN is straightforward with standard 19-inch rack mounting. The front-panel SC fiber ports allow for clean and organized cable management. The redundant, hot-swappable power supplies can be connected to independent circuits for fault tolerance. Configuration is managed via an intuitive web interface or CLI.Routine maintenance involves monitoring the switch's health and status through its management interfaces and ensuring firmware is kept current. The solid-state design (no fans) and robust components ensure high reliability. We provide comprehensive support, from initial network design to configuration assistance for optimizing industrial protocol performance. Our technical support team is available for troubleshooting, and we guarantee a reliable supply of genuine Enterasys A4H124-24FX P0973JN switches and accessories.
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