>>>>>型號:A4H124-24FX 快速以太網(wǎng)邊緣交換機 可擴展的線速性能

【功能描述】

A2H254-16 PO973BKExtreme Networks A4是一款高度可靠的快速以太網(wǎng)邊緣交換機,可提供可擴展的線速性能,以支持當今要求苛刻的應用對帶寬密集型和延遲的要求。A2H254-16 P973BK A4還為差異化服務提供多層數(shù)據(jù)包分類和優(yōu)先級排隊。除了17.6 Gbps的交換機容量外,A4還提供多達48個10/100以太網(wǎng)端口以及4個千兆以太網(wǎng)上行鏈路端口。A2H254-16 P0973BK利用A4的堆疊能力,多達8個A4可以在單個堆疊中互連,A2H254-16 P0973BK以創(chuàng)建一個虛擬交換機提供140.8 Gbps的容量和多達384個10/100以太網(wǎng)端口以及16個千兆以太網(wǎng)上行鏈路端口。

A4H124-24FX設備名稱及規(guī)格型號：美國凱創(chuàng)enterasys A4H124-24FX 24口

執(zhí)行標準：GB/T 21050-2019

用途及總體要求：天然氣公司天然氣處理站DCS系統(tǒng)。

接口數(shù)量：24口

交換機的主要功能：包括物理編址、網(wǎng)絡拓撲結(jié)構(gòu)、錯誤校驗、幀序列以及流控。當個據(jù)幀的目的地址在MAC地址表中有映射時，它被轉(zhuǎn)發(fā)到連接目的節(jié)點的端口而是所有端口（如該據(jù)幀為廣播/組播幀則轉(zhuǎn)發(fā)所有端口）。當交換機包括個冗余回路時，以太網(wǎng)交換機通過生成樹協(xié)議避免回路的產(chǎn)生，同時允許存在后備路徑。當個據(jù)幀的目的地址在MAC地址表中有映射時，它被轉(zhuǎn)發(fā)到毗連目的節(jié)點的端口而是所有端口（如該據(jù)幀為廣播/組播幀則轉(zhuǎn)發(fā)所有端口）。

交換機外殼、外露部件(端鈕、面板、開關(guān)等)表面應光潔完好，銘牌標志應清楚。

外觀良好，接口線纜完好，各部位緊固良好，屏顯數(shù)字正常。

各部件應清潔無塵、完整無損，不得有銹蝕、變形。

 >>>>>型號:A4H124-24FX 快速以太網(wǎng)邊緣交換機 可擴展的線速性能

【英文介紹】

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.

>>>>>型號:A4H124-24FX 快速以太網(wǎng)邊緣交換機 可擴展的線速性能