Description

The ENTERASYS A2H124-24FX P0973BJ is a rugged industrial Ethernet switch designed for mission-critical network infrastructure in harsh environments. Part of Enterasys’ (now Extreme Networks) A2H series, this 24-port Fast Ethernet switch delivers reliable Layer 2 connectivity with integrated fiber uplinks for extended network reach. Engineered for operational technology (OT) applications, the ENTERASYS A2H124-24FX P0973BJ features hardened construction (-40°C to +75°C operation), redundant power inputs (24–48 VDC), and compliance with industrial standards like IEEE 1613 for electrical substations. Its non-blocking architecture ensures deterministic data transmission for SCADA, automation protocols, and real-time control systems.

The switch’s 22 copper ports (10/100BASE-TX) and 2 fixed 100BASE-FX multi-mode fiber ports enable flexible topologies, while advanced QoS prioritizes critical traffic like PROFINET or Modbus TCP. With DIN-rail or panel mounting, IP30-rated housing, and immunity to EMI/vibration, the ENTERASYS A2H124-24FX P0973BJ withstands demanding conditions in power generation, transportation, and manufacturing. Legacy features like ExtremeXOS® operating system support provide robust security (802.1X, ACLs) and manageability, bridging IT/OT networks seamlessly.

ENTERASYS A2H124-24FX P0973BJ

Technical Specifications

Main Features and Advantages

Industrial Resilience: Reinforced chassis with 50g shock/5g vibration resistance per IEC 60068-2. Conformal-coated PCB prevents corrosion in humid/chemical environments. Dual power inputs with reverse-polarity protection ensure continuous operation.

Deterministic Performance: Wire-speed switching with <10>ENTERASYS A2H124-24FX P0973BJ supports static routing for segmented networks.

Enhanced Security: Port-based authentication (802.1X), MAC filtering, and VLAN isolation secure OT traffic. ACLs restrict unauthorized access. Lockable port covers prevent tampering in public installations.

Simplified Management: ExtremeXOS® enables zero-touch provisioning and auto-config backup. RMON monitoring detects anomalies. Loop protection (STP/RSTP) prevents downtime from topology errors.

Application Field

The ENTERASYS A2H124-24FX P0973BJ excels in critical infrastructure:

Energy: Substation communication (IEC 61850-3 compliance) for relay protection and meter data

Rail: Onboard train control networks with EN 50155 shock/vibration tolerance

Manufacturing: Machine cell connectivity for PROFINET/Modbus TCP devices

Water Treatment: Fiber backbone for remote pump station SCADA systems

Mining: Ventilation control in explosion-risk zones (ATEX optional)

Transportation: Traffic management system backbone with -40°C cold-start capability

ENTERASYS A2H124-24FX P0973BJ

Related Products

ENTERASYS A2H124-24: Non-fiber variant with 24 copper ports

ENTERASYS A2H124-24FX-SFP: SFP-based fiber uplink version

ENTERASYS I-Series ISW-2402G: Gigabit industrial switch successor

ENTERASYS PS24-2A: Redundant 24V power supply

EXTREME ISW-802F: Modern replacement with Layer 3 capabilities

Installation and Maintenance

Pre-installation preparation: Verify DC power source stability (±10% tolerance). Ground chassis via M4 screw (≤10 Ω resistance). Use shielded Ethernet cables (EMC immunity). Separate fiber/copper paths >20 cm from high-voltage lines.

Maintenance recommendations: Update firmware via TFTP during downtime. Monitor port errors via SNMP traps. Clean fiber connectors annually with lint-free swabs. Replace cooling fans after 80,000 hours. Validate configuration backups quarterly.