Extreme Networks A-Series A4H254-8F8T
8 Ports Fiber Optic plus 8 Ports 10/100 Stackable L2/L3 Edge Switch
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Overview:
The Extreme Networks A4 is a highly reliable fast Ethernet edge switch that provides scalable, wire-rate performance in support of the bandwidth-intensive and delay-sensitive requirements of today’s demanding applications. The A4 also provides multi-layer packet classification and priority queuing for differentiated services. Along with a switch capacity of 17.6 Gbps, the A4 provides up to 48 10/100 Ethernet ports as well as 4 Gigabit Ethernet uplink ports. Leveraging the A4’s stacking capability, as many as 8 A4s can be interconnected in a single stack to create a virtual switch that provides 140.8 Gbps of capacity and up to 384 10/100 Ethernet ports as well as 16 Gigabit Ethernet uplink ports.
- High-availability design assures reliable network operations
- Now with Extreme Networks policy and basic routing
- PoE supports a variety of network devices
- Investment protection via lifetime warranty
- 140.8 Gbps capacity and 104.8 Mpps
The A4 includes enterprise-class features in a 10/100 stackable switch that ensure seamless connectivity and application performance. With support for 16,000 MAC addresses, the A4 is an excellent choice for medium to large enterprises that need to support thousands of endpoints. Robust Quality of Service (QoS) features enable strong support for integrated multimedia networks, including Voice over IP (VoIP) and IP video, as well as all types of data-intensive applications. In conjunction with its non-blocking L2 switching architecture, the A4’s intelligent queuing mechanisms ensure that mission-critical applications receive prioritized access to network resources.
The A4 includes a 24 port model with a very quiet design that operates fan-less in a typical office setting, making it ideal for classrooms and conference rooms.
A highly-scalable architecture and a lifetime warranty ensure that an A4 network investment will sustain a secure, feature-rich, and cost-effective network well into the future.
Features:
Reliability and Availability
The A4 design incorporates redundancy and failure protection mechanisms complete with automatic failover and recovery capabilities to provide a reliable network. An integral power supply is the primary source of power for the A4 and complete power redundancy is provided by an optional external power supply. In addition to the standard version of the A4, there are also IEEE 802.3af Power over Ethernet versions which supports network devices that require external power such as wireless access points, VoIP phones, and network cameras. A virtual switch can be created by interconnecting as many as 8 A4s in a single stack, which can be managed via a single IP address with redundant management connections. The A4's closed-loop stacking capability utilizes bi-directional switch interconnects to maintain connectivity within the virtual switch despite any physical switch-level failure. Up to 8 Ethernet ports can be grouped together to create a multi-link aggregation group (LAG). The A4 can support multiple LAG's distributed across several A4s within a stack to prevent a switch-level failure from disrupting data communications.
Advanced Quality of Service
Robust QoS features enable strong support for integrated multimedia networks, including VoIP and video, as well as all types of data-intensive applications. The A4 uses multiple standards-based discovery methods with Extreme Networks policy capabilities to automatically identify and provision VoIP services for IP phones from all major vendors. A4 switches provide dynamic mobility for VoIP clients to reduce operating costs; when an IP phone moves and plugs in elsewhere in the enterprise network, its VoIP service provisioning, security and traffic priority settings move with it, with no manual administration required.
Security
The A4 provides a secure network by utilizing its authentication and security features, which can be applied at the port level or at the user level. Making use of the Extreme Networks Network Management Suite's Policy Manager or a standard CLI, the Extreme Networks role-based architecture enables a network administrator to define distinct roles or profiles that represent operational groups within a business (e.g., employee, executive, guest, etc). Up to two devices (a PC and a VLA-tagging phone) per port can be authenticated via IEEE 802.1X, MAC address or web-based authentication, and then assigned a pre-defined operational role.
Investment Protection
The A4 is a cost-effective, feature-rich, stackable switch that provides a broad set of features today and will continue to deliver benefits well into the future. With Release 6.61, the A4 now supports static routing as well as RIPv1/v2 routing. All A-Series products include a lifetime warranty that includes warranty and support services for which many competitors charge additional fees – adding up to 10% of initial deployment costs on an annual basis. Included benefits, such as advanced hardware return, firmware feature upgrades (which most vendors cover at most for 90 days) and telephone support (which most don't include or severely limit) combine to significantly decrease operational costs for customers over the life of their network.
Performance & Scalability
The A4 provides scalable, wire-rate performance in support of the bandwidth-intensive and delaysensitive requirements of today's demanding applications. Along with a switch capacity of 17.6 Gbps, the A4 provides up to 48 10/100 Ethernet ports as well as 2 modular Gigabit Ethernet and 2 10/100/10000 uplink ports. Leveraging the A4's wire-rate stacking capability, as many as 8 A4s can be interconnected in a single stack to create a virtual switch that provides 140.8 Gbps of capacity and up to 384 10/100 Ethernet ports as well as 16 Gigabit Ethernet uplink ports.
Benefits:
Business Alignment
- Extreme Networks policy capabilities support converged multimedia networks
- Reliable network operation for missioncritical applications
Operational Efficiency
- Scalable architecture supports continued growth of network capacity
- Consolidated management capabilities reduce network operational expenses
- Highly available design ensures reliable network operations
Security
- Network access secured by 802.1x, MAC address and web-based authentication methods
- Extreme Networks policy provided enhanced network security that is maintained concurrently with user mobility
- Architecture designed with integral network security
Support and Service
- Industry-leading customer satisfaction and first call resolution rates
- Personalized services, including site surveys, network design, installation, and training
- Comprehensive lifetime warranty, including feature upgrades and more
- Release 6.61 adds policy and basic routing with support for two devices (PC and a phone) on a single port
Standards and Protocols:
MAC Address Table Size
VLANs
Switching Services
Security
IPv4 Routing
|
MIB Support
VLAN Support
Quality of Service
|
Management
IPv6 Management
|
Specifications:
| A-Series Models | A4H254-8F8T | A4H124-24FX |
|---|---|---|
 |
 |
|
| Performance | ||
| Throughput Capacity wire-speed Mpps (switch / stack) |
8.3 Mpps / 66.7 Mpps | 9.5 Mpps / 76.2 Mpps |
| Switching Capacity (switch / stack) |
11.2 Gbps (8.3 Mpps) / 89.6 Gbps (66.7 Mpps) | 12.8 Gbps (9.5 Mpps) / 102.4 Gbps (76.2 Mpps) |
| Stacking Capacity (switch / stack) |
4.0 Gbps (2.98 Mpps)/32.0 Gbps (23.8 Mpps)
No dedicated stacking on A4; Up to two Gigabit uplinks can be used for stacking or uplinks |
|
| PoE Specifications | ||
| 802.3af Interoperable | N/A | N/A |
| 802.3at Interoperable | N/A | N/A |
| System Power | N/A | N/A |
| Physical Specifications | ||
| Dimensions (H x W x D) | H: 4.4 cm (1.73") W: 44 cm (17.32") D: 36.5 cm (14.37") |
H: 4.4 cm (1.73") W: 44 cm (17.32") D: 36.5 cm (14.37") |
| Net Weight | 4.78 kg (10.50 lb) | 4.85 kg (10.69 lb) |
| MTBF | 388,498 hours | 388,135 hours |
| Physical Ports | • (8) 10/100BASE-T RJ45 ports • (8) 100Base-FX MT-RJ ports • (2) Gigabit Ethernet SFP ports • (2) 10/100/1000 stacking/uplink RJ45 ports • (1) DB9 console port • (1) RPS port |
• (24) 100Base-FX MTRJ fiber optic ports • (2) mini-GBIC ports • (2) 10/100/1000 stacking/uplink RJ45 ports • (1) DB9 console port • (1) RPS port |
| Power Requirements | ||
| Normal Input Voltage | 100 – 240 VAC | 100 – 240 VAC |
| Input Frequency | 50 – 60 Hz | 50 – 60 Hz |
| Input Current | 1.0 A Max | 1.0 A Max |
| Power Consumption | 47 watts | 66 watts |
| Environmental Specifications | ||
| IEC 6-2-1 Standard Operating Temperature | 0° to 50° C (32° to 122° F) | |
| IEC 6-2-14 Non-Operating Temperature | -40° to 70° C (-40° to 158° F) | |
| Heat Dissipation | 161 BTUs/Hr | 224 BTUs/Hr |
| Operating Humidity | 5% - 95% non- condensing | |
| Vibration | IEC 68-2-6, IEC68-2-36 | |
| Shock | IEC 68-2-29 | |
| Drop | IEC 68-2-32 | |
| Acoustics | 50.0 dB | 51.5 dB |
| Agency & Regulatory Standards Specifications | ||
| Safety | UL 60950-1, CSA 22.1 60950, EN 60950-1, and IEC 60950-1 | |
| EMC | FCC Part 15 (Class A), ICES- 003 (Class A), BSMI, VCCI V-3, AS/NZS CISPR 22 (Class A), EN 55022 (Class A), EN 55024, EN 61000-3-2, and EN 61000-3-3 | |
| Environmental | 2002/95/EC (RoHS Directive), 2002/96/EC (WEEE Directive) | |
Documentation:
Download the Extreme Networks A-Series Datasheet (PDF).