A4H254-8F8T | Layer 2/3 Ethernet Switch

Product Overview

The Extreme A4H254-8F8T is a high-performance, fast Ethernet edge switch designed to meet the demanding requirements of modern enterprise networks. As part of the Extreme Networks A-Series, this switch offers robust performance, advanced features, and scalability, making it an ideal solution for medium to large enterprises.

The A4H254-8F8T provides a combination of 10/100 Ethernet ports and 1000BASE-FX fiber ports, along with Gigabit Ethernet uplink ports, offering flexibility for various network configurations. It supports a wide range of applications, from basic data transfer to more complex multimedia networks, including Voice over IP (VoIP) and IP video. The switch also features advanced Quality of Service (QoS) capabilities, ensuring that critical applications receive prioritized access to network resources.

Technical Specifications

Parameter	Value
Product Model	A4H254-8F8T
Manufacturer	Extreme Networks
Product Type	Layer 2/3 Ethernet Switch
Port Configuration	8 x 10/100BASE-T RJ45 ports
Switching Capacity	11.2 Gbps
Throughput Capacity	8.3 Mpps (switch) / 66.7 Mpps (stack)
MAC Address Table Size	16,000
VLAN Support	Up to 4094 VLANs
Power Supply	100-240 VAC, 50-60 Hz
Dimensions (H x W x D)	4.4 cm x 44 cm x 36.5 cm
Weight	4.78 kg
Operating Temperature	0°C to 50°C

Key Features and Benefits

High Availability: The A4H254-8F8T features redundancy and failover mechanisms, including optional external power supplies and bi-directional switch interconnects, ensuring continuous network operation.
Advanced QoS: Robust QoS features support integrated multimedia networks, ensuring that critical applications like VoIP and video receive prioritized access to network resources.
Security: The switch offers port-level and user-level security features, including 802.1X, MAC address, and web-based authentication, enhancing network security.
Scalability: Up to 8 A4 switches can be stacked to create a virtual switch with up to 384 10/100 Ethernet ports and 16 Gigabit Ethernet uplink ports, providing significant scalability.
Investment Protection: The A-Series includes a lifetime warranty, ensuring long-term value and reducing total cost of ownership.

Application Scenarios

The A4H254-8F8T is well-suited for a variety of applications:

Enterprise Networks: Ideal for medium to large enterprises that require high-density Ethernet connectivity and advanced QoS features.
Data Centers: The switch’s high-density ports and stacking capabilities make it suitable for data center edge or aggregation layers.
Multimedia Networks: Supports VoIP and IP video applications, ensuring seamless multimedia experiences.
Educational Institutions: The quiet, fan-less design of the 24-port model makes it suitable for classrooms and conference rooms.

Related Models

A4H124-24FX: A 24-port fiber version with 24 x 100Base-FX MTRJ fiber ports, suitable for extended reach.
A4H124-48/A4H124-48P: Higher-density 48-port versions with optional PoE, providing more connectivity options.
Enterasys S-Series or X-Series: Core layer switches that can be used in conjunction with the A4H254-8F8T for a multi-layer network architecture.

Installation and Maintenance

When installing the A4H254-8F8T, ensure the environment meets the required temperature and humidity specifications. The switch should be mounted securely in a 19-inch rack. Regular maintenance includes checking the power supplies, fans, and network connections. Utilize the switch’s diagnostic tools and management software for monitoring and troubleshooting.

Product Warranty

The A4H254-8F8T comes with a lifetime warranty, providing coverage for manufacturing defects and ensuring long-term reliability. Extreme Networks also offers comprehensive support services to assist with any technical issues or inquiries.