Foxboro A4H254-8F8T Networks Ethernet Switch

Overview

The FOXBORO A4H254-8F8T is a high-performance Layer 2/Layer 3 managed switch. While some listings associate it with Foxboro, it is originally an Extreme Networks A-Series A4 product. Engineers use it in industrial and enterprise environments requiring robust performance, reliable fiber connectivity, and stacking capabilities. It supports copper and fiber ports, advanced security, and network management features, making it ideal for scalable deployments.

Technical Specifications

Port Configuration

• 8 × 10/100Base-TX (RJ-45, copper Ethernet)

• 8 × 100Base-FX (MT-RJ, multimode fiber)

• 2 × 10/100/1000Base-T (RJ-45, uplink/stacking)

• 2 × 1000Base-X (SFP, mini-GBIC)

Performance

• Switching Capacity (Standalone): 11.2 Gbps

• Switching Capacity (Stacked): 89.6 Gbps

• Forwarding Rate (Standalone): 8.3 Mpps

• Forwarding Rate (Stacked): 66.7 Mpps

• MAC Address Table: 16K entries

• Jumbo Frame Support: Up to 9216 bytes

• Stacking Support: Up to 8 units

• Total Switching Capacity (Max Stack): 140.8 Gbps

• Total Forwarding Rate (Max Stack): ~66.7 Mpps

Management & Protocols

• SNMP (v1/v2c/v3), RMON, Telnet, SSH2, HTTP/HTTPS

• VLAN, QoS, Spanning Tree (STP/RSTP/MSTP)

• Port mirroring, RADIUS authentication

• Web GUI and CLI management

• TFTP firmware upgrades and configuration backup

Power & Environmental

• Input Voltage: 120/230V AC, 50–60 Hz

• Power Consumption: 47 W max

• Operating Temperature: 0°C to 50°C

• Storage Temperature: -40°C to 70°C

• Relative Humidity: 5% to 95% (non-condensing)

• Redundant Power Supply: Optional external RPS support

Physical Characteristics

• Form Factor: 1U rack-mountable

• Dimensions: 17.32 × 12.99 × 1.73 in (44 × 33 × 4.4 cm)

• Weight: 10.6 lbs