6GK5786-1FC00-0AA0交換機可議價
6GK5786-1FC00-0AA0交換機可議價
6GK5786-1FC00-0AA0交換機可議價
6GK5786-1FC00-0AA0交換機6GK5788-1FC00-0AA0接線圖
6GK5786-1FC00-0AA0交換機6GK5788-1FC00-0AA0線路圖
6GK5786-1FC00-0AA0交換機6GK5788-1FC00-0AA中文說明書
6GK5786-1FC00-0AA0以太網交換機
6GK5786-1FC00-0AA0隨著計算機及其互聯技術（也即通常所謂的“網絡技術”）的迅速發展，以太網成為了迄今為止普及率·高的短距離二層計算機網絡。而以太網的核心部件就是以太網交換機。
6GK5786-1FC00-0AA0不論是人工交換還是程控交換，都是為了傳輸語音信號，是需要獨佔線路的“電路交換”。而以太網是一種計算機網絡，需要傳輸的是數據，因此採用的是“分組交換”。
6GK5786-1FC00-0AA0但無論採取哪種交換方式，交換機為兩點間提供“獨享通路”的特性不會改變。就以太網設備而言，交換機和集線器的本質區別就在於：當A發信息給B時，如果通過集線器，則接入集線器的所有網絡節點都會收到這條信息（也就是以廣播形式發送），只是網卡在硬件層面就會過濾掉不是發給本機的信息；而如果通過交換機，除非A通知交換機廣播，否則發給B的信息C絕不會收到（獲取交換機控制權限從而監聽的情況除外）。
6GK5786-1FC00-0AA0以太網交換機廠商根據市場需求，推出了三層甚至四層交換機。但無論如何，其核心功能仍是二層的以太網數據包交換，只是帶有了·定的處理IP層甚至更高層數據包的能力。網絡交換機是一個擴大網絡的器材，能為子網絡中提供更多的連接端口，以便連接更多的計算機。隨著通信業的發展以及國民經濟信息化的推進，網絡交換機市場呈穩步上升態勢。它具有性能價格比高、高度靈活、相對簡單、易於實現等特點。
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3BHE028915R0101 PC D237 A101 2個
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豫公安備 41010502000017號