>>>>>型号:A4H124-24FX 快速以太网边缘交换机 可扩展的线速性能
【功能描述】
A2H254-16 PO973BKExtreme Networks A4是一款高度可靠的快速以太网边缘交换机,可提供可扩展的线速性能,以支持当今要求苛刻的应用对带宽密集型和延迟的要求。A2H254-16 P973BK A4还为差异化服务提供多层数据包分类和优先级排队。除了17.6 Gbps的交换机容量外,A4还提供多达48个10/100以太网端口以及4个千兆以太网上行链路端口。A2H254-16 P0973BK利用A4的堆叠能力,多达8个A4可以在单个堆叠中互连,A2H254-16 P0973BK以创建一个虚拟交换机提供140.8 Gbps的容量和多达384个10/100以太网端口以及16个千兆以太网上行链路端口。
A4H124-24FX设备名称及规格型号：美国凯创enterasys A4H124-24FX 24口
执行标准：GB/T 21050-2019
用途及总体要求：天然气公司天然气处理站DCS系统。
接口数量：24口
交换机的主要功能：包括物理编址、网络拓扑结构、错误校验、帧序列以及流控。当个据帧的目的地址在MAC地址表中有映射时，它被转发到连接目的节点的端口而是所有端口（如该据帧为广播/组播帧则转发所有端口）。当交换机包括个冗余回路时，以太网交换机通过生成树协议避免回路的产生，同时允许存在后备路径。当个据帧的目的地址在MAC地址表中有映射时，它被转发到毗连目的节点的端口而是所有端口（如该据帧为广播/组播帧则转发所有端口）。
交换机外壳、外露部件(端钮、面板、开关等)表面应光洁完好，铭牌标志应清楚。
外观良好，接口线缆完好，各部位紧固良好，屏显数字正常。
各部件应清洁无尘、完整无损，不得有锈蚀、变形。
>>>>>型号:A4H124-24FX 快速以太网边缘交换机 可扩展的线速性能
【英文介绍】
A2H254-16 PO973BKExtreme Networks A4 is a highly reliable fast Ethernet edge switch that delivers scalable wire-speed performance to support the bandwidth-intensive and latencies demanded by today's demanding applications. The A2H254-16 P973BK A4 also provides multi-layer packet classification and priority queuing for differentiated services. In addition to the 17.6 Gbps switch capacity, the A4 offers up to 48 10/100 Ethernet ports, as well as four Gigabit Ethernet uplink ports. A2H254-16 P0973BK leverages the stacking capabilities of the A4, up to 8 A4S can be interconnected in a single stack, and the A2H254-16 P0973BK to create a virtual switch to provide 140.8 Gbps capacity and up to 384 10/100 Ethernet ports as well as 16 Gigabit Ethernet uplink ports.
A4H124-24FX Equipment name and specification Model: enterasys A4H124-24FX 24 port
Execution standard: GB/T 21050-2019
Application and general requirements: DCS system of natural gas processing station of natural gas company.
Number of ports: 24
The main functions of the switch include physical addressing, network topology, error checking, frame sequence and flow control. When the destination address of a data frame is mapped in the MAC address table, it is forwarded to all ports connected to the destination node (if the data frame is a broadcast/multicast frame, all ports are forwarded). When a switch includes a redundant loop, the Ethernet switch uses the spanning tree protocol to avoid the loop and allow for a backup path. When the destination address of a data frame is mapped in the MAC address table, it is forwarded to all ports adjacent to the destination node (if the data frame is a broadcast/multicast frame, all ports are forwarded).
The surface of the switch shell and exposed components (end buttons, panels, switches, etc.) should be smooth and intact, and the nameplate should be clearly marked.
The interface cables are intact, all parts are securely secured, and the numbers displayed on the screen are normal.
All parts should be clean and dust-free, intact and without corrosion or deformation.
>>>>>型号:A4H124-24FX 快速以太网边缘交换机 可扩展的线速性能
