专为寻求行业领 先的性能，坚如磐石的可靠性和嵌入式语音/视频/数据优先级的客户，Enterasys a系列提供线速切换以及先进的优先级功能。Enterasys A2是一款高性能、快速的以太网边缘交换机，可提供可扩展的线速率性能，以支持当今苛刻应用的带宽密集型和延迟敏感要求。A2支持8000个MAC地址，是需要完整多层交换功能和支持高密度(10/100Base-T, 100Base-FX)以太网端口的环境的绝 佳选择。A2非常适合100mbps网络，也可能需要千兆以太网上行连接。除了完整的多层交换能力外，A2还为差异化业务提供多层分组分类和优先级排队。除了17.6 Gbps的交换容量外，A2还提供多达48个10/100Base-T或24个100Base-FX以太网端口以及两个10/100/1000以太网端口，可作为上行链路或堆叠连接。多达8个A2s可以在一个堆叠中互连，以创建一个虚拟交换机，提供140.8 Gbps的容量，多38410/100Base-T或192个100Base-FX以太网端口，以及32个10/100/1000以太网端口用于上行或堆叠连接。
稳健的QoS (Quality of Service)特性为集成多媒体网络(包括VoIP (Voice over IP)和视频)以及所有类型的数据密集型应用提供了强大的支持。a2为每个以太网端口提供了8个基于硬件的优先级队列，以支持一套多达8个不同优先级的差异化服务。与其非阻塞L2交换架构相结合，A2的智能排队机制确保关键任务应用程序优先访问网络资源。
A2通过利用其身份验证和安全特性提供了一个安全的网络，这些特性可以在端口级或用户级应用。A2支持每个端口一个用户/设备，可以通过IEEE 802.1X或MAC地址进行身份验证。
a系列提供高端口密度在1u的足迹，是环保的设计。通过在给定数量的机架空间内大化端口密度，A2大限度地减少了其冷却要求。A2的整体电气需求通过低电流消耗和对高环境温度的极 端耐受性进一步降低。高度可扩展的架构和终身保修确保A2网络投资将在未来维持一个安全、功能丰富且经济高效的网络。
Designed for customers seeking industry-leading performance, rock-solid reliability, and embeddedvoice/video/data priority, the Enterasys A-Series delivers line-rate switching along with advancedpriority features. The Enterasys A2 is a high-performance, fast ethernet edge switch that providesscalable, wire-rate performance in support of the bandwidth-intensive and delay-sensitiverequirements of today's demanding applications. With support for 8,000 MAC addresses, the A2 isan excellent choice for environments that require complete multi-layer switching capabilities andsupport for high density (10/100Base-T, 100Base-FX) Ethernet ports. The A2 is well-suited for 100 Mbpsnetworks that may also require Gigabit Ethernet uplink connections. In addition to its completemulti-layer switching capabilities, the A2 also provides multi-layer packet classification and priorityqueuing for differentiated services. Along with a switch capacity of 17.6 Gbps, the A2 provides up to48 10/100Base-T or 24 100Base-FX Ethernet ports as well as two 10/100/1000 Ethernet ports,which can be used as uplink or stacking connections. As many as 8 A2s can be interconnectedin a single stack to create a virtual switch that provides 140.8 Gbps of capacity and up to 38410/100Base-T or 192 100Base-FX Ethernet ports as well as 32 10/100/1000 Ethernet ports foruplink or stacking connections.
Robust Quality of Service (QoS) features enable strong support for integrated multimedia networks,including Voice over IP (VoIP) and video, as well as all types of data-intensive applications. The A2provides 8 hardware-based priority queues for each Ethernet port to support a suite of differentiatedservices with as many as 8 distinct priority levels. In conjunction with its non-blocking L2 switchingarchitecture, the A2's intelligent queuing mechanisms ensure that mission-critical applicationsreceive prioritized access to network resources.
The A2 provides a secure network by utilizing its authentication and security features, which can beapplied at the port level or at the user level. The A2 supports a single user/device per port, whichcan be authenticated via IEEE 802.1X or MAC address.
The A-Series provides high port density in a 1u footprint and is environmentally friendly by design. By maximizing port density within a given amount of rack space, the A2 minimizes its coolingrequirements. The A2's overall electrical requirement is further reduced by a low current draw andan extreme tolerance for high environmental temperatures. A highly-scalable architecture and alifetime warranty ensures that an A2 network investment will sustain a secure, feature-rich, andcost-effective network well into the future.
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