1. Basic Information

ENTERASYS A2H254-16 P0973BK is a Layer 2 switch module designed for enterprise LAN and industrial automation scenarios. As a core high-efficiency and secure network interconnection component, it integrates data forwarding, network management, security protection and traffic optimization functions, serving as key network equipment for device interconnection and data transmission in enterprise and industrial environments.

It is mainly used to connect office terminals such as enterprise internal computers, servers and printers, as well as industrial control devices including DCS system accessories, robot system parts and large servo system spare parts to realize fast data forwarding and switching. With VLAN division, QoS traffic optimization, access control and other functions, it improves network management flexibility, security and transmission efficiency. Meanwhile, it supports redundant power supply configuration to ensure continuous and stable network operation, meeting dual demands of enterprise networks and industrial automation networks.

2. Technical Specifications

2.1 Core Electrical & Network Specifications

• Power Supply: Input AC 100~240V, 50/60Hz. It supports redundant DC power configuration, effectively preventing network outage caused by internal or AC power failure and enhancing equipment operational reliability.
• Switching Performance: Switching capacity up to 48Gbps, forwarding rate 35.7Mpps. It processes massive network data efficiently to ensure smooth data transmission and satisfy high-bandwidth demands of enterprise and industrial applications.

• Port Configuration: Equipped with 16×10/100Base-TX ports for flexible connection of various terminals and network components, enabling simultaneous multi-device interconnection and adapting to network layouts of different scales.

• 
  

• Network Management: Supports VLAN function with up to 4K configurable VLANs to divide the network into multiple logical subnets for higher network security and easier management. QoS function is available to prioritize critical traffic such as audio, video and real-time control data and guarantee transmission performance of core applications.
• Hardware Performance: 8K MAC address table capacity enables efficient MAC address identification and learning for accurate packet forwarding, reducing data loss and transmission delay.

• Environmental Adaptability: Operating temperature: 0℃~40℃; storage temperature: -40℃~80℃; operating humidity: 10%~90%. It adapts to conventional office and industrial site environments. UL94-V0 fire rating improves equipment safety.

• 
  

2.2 Physical & Structural Specifications

• Mounting Mode: Supports standard rack mounting in line with installation standards for enterprise and industrial network devices. It is easy to install, can be quickly fitted into existing network cabinets, and convenient for later maintenance, expansion and replacement.
• Dimensions: Standard industrial enclosure, 44mm×210mm×300mm (H×W×D). Compact structure saves cabinet space and suits dense multi-device deployment.

• Weight: Approximately 1.08kg. Lightweight design balances structural sturdiness and easy installation, bringing no extra load to cabinets.

• 
  

• Enclosure & Connection: Industrial-grade protective enclosure delivers excellent dustproof and anti-interference capability against slight dust and electromagnetic interference in industrial sites. Reasonably arranged ports ensure convenient wiring and stable connection for reliable data transmission. Dedicated power and network interfaces match redundant power access requirements.

• Product Features: Modular design allows flexible integration into SecureStack series network systems and coordinated operation with peer devices. Complete status indicators facilitate quick on-site judgment of equipment running status and network connection. It supports configuration and monitoring via network management software or command line interface to simplify operation and maintenance.

2.3 Core Functions & Compatibility Specifications

• Core Functions: It realizes data forwarding & switching, VLAN division, QoS traffic optimization, MAC address learning & filtering, ACL access control and port security. Redundant power supply support ensures non-stop network operation. Built-in network management and monitoring functions enable real-time traffic and device status monitoring for convenient configuration and troubleshooting.

• Integration Features: Highly integrated design embeds data forwarding unit, network management unit and security protection unit. Complete network interconnection and management functions can be realized without extra accessories, simplifying network construction and cutting deployment costs. Online configuration and debugging are supported for on-site network parameter optimization.

• 
  

• Compatibility: Fully compatible with Enterasys SecureStack series network systems for seamless cooperation with switches, routers and other peer devices. It connects smoothly with office terminals (computers, servers, printers) and industrial control equipment (DCS systems, robots, servo systems) to achieve multi-device intercommunication. Support for mainstream network protocols enables easy access into existing enterprise and industrial network architectures with high integration flexibility.
• Reliability & Practicality: Industrial-grade design ensures stable operation and low long-term failure rate to reduce network maintenance costs. Comprehensive security mechanisms defend against unauthorized access and network attacks to secure network data. Redundant power supply and high switching performance meet requirements on network continuity and efficiency. Compact structure and user-friendly management improve equipment deployment and operation efficiency.

3. Working Principle

1. Equipment Initialization & Parameter ConfigurationAfter power-on, the switch module completes self-check and system initialization automatically to inspect the operating status of ports, power supply, data forwarding units and other components, and enters ready state if no abnormality is detected. Administrators configure network parameters including VLAN division, QoS priority, MAC address filtering and access control rules via network management software or command line interface to finish network adaptation.
2. Device Access & MAC Address LearningTerminals such as computers, servers and industrial control devices are connected to 10/100Base-TX ports via network cables. The switch automatically identifies accessed devices, learns and records their MAC addresses, and updates data into the local MAC address table (max. 8K entries) to lay a foundation for accurate data forwarding.

1. Data Forwarding & Traffic OptimizationUpon receiving data packets from terminals, the switch parses destination MAC addresses, matches them with the MAC address table, and forwards packets accurately to target devices at corresponding ports to avoid broadcast storm and boost transmission efficiency. Meanwhile, QoS classifies network traffic by priority to prioritize audio, video, real-time control and other key data and ensure stable transmission quality of core services.

1. Security Protection & Redundancy GuaranteeThe switch isolates different logical subnets through VLAN division to enhance network security. ACL rules, port security and MAC address filtering block unauthorized access and resist network attacks. With redundant power supply support, the backup power will take over automatically once the main power fails to keep the switch running and avoid network interruption.
2. Status Monitoring & Fault HandlingThe switch monitors its own operating status (power supply, ports, data forwarding) and network connection status in real time, and displays working conditions intuitively through status indicators. Once port faults, power anomalies, transmission errors and other failures are detected, it will send alarm signals and feedback fault information to network management terminals for rapid troubleshooting and stable network operation.

4. Application Scenarios

4.1 Enterprise Office Network

Serving as core LAN switches in enterprises and office buildings, it connects office computers, servers, printers, projectors and other terminals to realize fast office data transmission and sharing. VLAN isolates networks of different departments to improve network security and management efficiency. QoS optimizes office traffic to ensure smooth video conferencing, file transmission and other core office applications.

4.2 Industrial Automation Control Network

Deployed on industrial production sites, it connects DCS system components, robot accessories, large servo spare parts and other industrial control equipment to realize real-time transmission and interaction of industrial control data, providing stable network support for automated production. It adapts to temperature and humidity changes in industrial environments with high reliability to guarantee uninterrupted operation of industrial control networks.

4.3 Small & Medium-sized Enterprise Network

It is ideal for network construction of small and medium-sized enterprises. 16 ports satisfy daily terminal interconnection demands, and 48Gbps switching capacity plus 35.7Mpps forwarding rate support daily data transmission and internet access. Modular design facilitates later network expansion along with business growth and lowers network upgrade costs.

4.4 Security & Automatic Control System