ENTERASYS A2H124-24FX-RH – SecureStack fiber-access switch for 24× 100BASE‑FX edge deployments

The ENTERASYS A2H124-24FX-RH is a SecureStack A2 series managed Fast Ethernet switch built for fiber-to-the-edge scenarios. You get twenty‑four 100BASE‑FX fiber ports for long runs and noise‑immune links, plus gigabit uplink capability for aggregation. The “-RH” suffix typically indicates RoHS compliance, which many procurement teams ask for. From my experience, this model is a steady pick in facilities where copper just doesn’t hold up—industrial floors, transportation hubs, or campus extensions that exceed 100 m.

Company’s Order Placement Process and Guarantees

• Warranty: 365 days
• Lead time: In‑stock items typically ship within 1 week; no more than one month at the latest
• Payment: 50% advance payment; full payment before delivery
• Express options: FedEx, UPS, DHL

Key Features

• 24 × 100BASE‑FX fiber ports – Designed for stable 100 Mbps fiber links where EMI or long distance makes copper tricky.
• Gigabit uplinks – Typically provides 1G SFP uplink options to connect into your distribution/core for clean aggregation.
• Managed Layer 2 – VLANs, QoS, port security, and SNMP make it straightforward to integrate with existing NMS tools.
• RoHS-compliant “-RH” variant – Helps with environmental compliance documentation during audit cycles.
• Quiet, 1U rack form factor – Easy to slot into 19-inch cabinets in comm rooms or control panels with fiber trays.
• Fiber-first reliability – Immunity to electrical noise is a real benefit around VFDs, welders, or heavy machinery.

Technical Specifications

Application Fields

Typical deployments include factory floors with high EMI, transportation depots, warehouses, campus fiber spurs, and utility substations where copper runs aren’t feasible. One thing I appreciate is how 100BASE‑FX lets you push stable links well beyond 100 m while keeping latency very predictable for SCADA, badge readers, or IP intercoms. You might notice that maintenance crew often pair this switch with pre‑terminated fiber cassettes to keep moves/adds/changes quick.

Advantages & Value

• Reliability in harsh areas – Fiber immunity to electrical noise reduces random dropouts common with long copper pulls.
• Compatibility – Works with standard 100BASE‑FX links and common 1G SFP uplinks (SX/LX), which keeps optics sourcing simple.
• Cost control – Extending life of existing 100 Mbps fiber segments can be more economical than a full cabinet upgrade.
• Support & spares – Mature platform; firmware and accessories are straightforward to maintain in most cases.

A facilities client in transit operations mentioned that swapping older media converters for this A2 unit cleaned up their wiring and cut failure tickets by half. Seems to be a common story where unmanaged fiber gear used to sit around end devices.

Installation & Maintenance

• Cabinet & environment – 19‑inch rack, 1U space, front‑to‑back ventilation. Keep 50 mm clearance for airflow and route fiber with proper bend radius.
• Power & grounding – 100–240 VAC supply, stable earthing. Avoid sharing circuits with heavy inductive loads if possible.
• Fiber practices – Use dust caps, clean connectors before mating, and label each fiber pair. Eye protection for laser safety is recommended.
• Wiring – Secure patch cords with slack management; don’t exceed connector insertion cycles for SFPs.
• Routine maintenance – Back up config, check logs/SNMP traps, keep firmware at a vetted release, and inspect fans/filters during quarterly checks.
• Commissioning tip – Start with a basic VLAN/QoS template, verify link budgets end‑to‑end on all FX runs, then lock down port security.

Quality & Certifications

• Compliance – RoHS (per “-RH” designation); CE and UL/CSA safety are typically met for this series.
• Manufacturer quality – Built under ISO 9001 quality systems, as is standard for enterprise network equipment.
• Warranty – 365‑day warranty provided with supply.

Suggested Accessories & Supporting Components

• 1G SFP transceivers (1000BASE‑SX for MMF, 1000BASE‑LX for SMF) for uplinks
• LC/SC duplex fiber patch cords matched to your optics and plant (OM3/OM4 or OS2)
• Rack‑mount kit and cable management bars for tidy installs
• Serial console cable for out‑of‑band management