Extreme Networks A4 是一款高度可靠的快速以太網邊緣交換機，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。A4 還為差異化服務提供多層數據包分類和優(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 以太網端口以及 4 個千兆以太網上行鏈路端口。

利用 A4 的堆疊能力，多達 8 個 A4 可以在單個堆疊中互連，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 以太網端口以及 16 個千兆以太網上行鏈路端口。

高可用性設計確保可靠的網絡運行
現在使用 Extreme Networks 策略和基本路由
PoE支持多種網絡設備
通過終身保修來保護投資
140.8 Gbps 容量和 104.8 Mpps

A4H124-24FX

A4H124-24FX
交換機的主要功能：包括物理編址、網絡拓撲結構、錯誤校驗、幀序列以及流控。當個據幀的目的地址在MAC地址表中有映射時，它被轉發(fā)到連接目的節(jié)點的端口而是所有端口（如該據幀為廣播/組播幀則轉發(fā)所有端口）。當交換機包括個冗余回路時，以太網交換機通過生成樹協(xié)議避免回路的產生，同時允許存在后備路徑。當個據幀的目的地址在MAC地址表中有映射時，它被轉發(fā)到毗連目的節(jié)點的端口而是所有端口（如該據幀為廣播/組播幀則轉發(fā)所有端口）。

A4H124-24FX

Extreme Networks A4 is a highly reliable fast Ethernet edge switch that delivers scalable wire-speed performance to support today

Bandwidth intensive and latency requirements for demanding applications. A4 also provides multi-layer packet classification and priority queuing for differentiated services. except

In addition to the 17.6 Gbps switch capacity, the A4 offers up to 48 10/100 Ethernet ports and four Gigabit Ethernet uplink ports.

Leveraging the stacking capabilities of the A4, up to eight A4s can be interconnected in a single stack to create a virtual switch that delivers 140.8 Gbps

Capacity and up to 384 10/100 Ethernet ports as well as 16 Gigabit Ethernet uplink ports.

High availability design ensures reliable network operation
Now use Extreme Networks policy and basic routing
PoE supports a variety of network devices
Protect your investment with a lifetime warranty
140.8 Gbps capacity and 104.8 Mpps
A4H124-24FX
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).

A4H124-24FX