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1B30035H01

以太網(wǎng)的工作原理 以太網(wǎng)采用帶沖突檢測的載波幀聽多路訪問（CSMA/CD）機制。以太網(wǎng) 中節(jié)點都可以看到在網(wǎng)絡(luò)中發(fā)送的所有信息，因此，我們說以太網(wǎng)是一 種廣播網(wǎng)絡(luò)。 以太網(wǎng)的工作過程如下： 當(dāng)以太網(wǎng)中的一臺主機要傳輸數(shù)據(jù)時，它將按如下步驟進行： 1、監(jiān)聽信道上是否有信號在傳輸。如果有的話，表明信道處于忙狀態(tài) ，就繼續(xù)監(jiān)聽，直到信道空閑為止。 2、若沒有監(jiān)聽到任何信號，就傳輸數(shù)據(jù) 3、傳輸?shù)臅r候繼續(xù)監(jiān)聽，如發(fā)現(xiàn)沖突則執(zhí)行退避算法，隨機等待一段 時間后，重新執(zhí)行步驟1（當(dāng)沖突發(fā)生時，涉及沖突的計算機會發(fā)送會 返回到監(jiān)聽信道狀態(tài)。 注意：每臺計算機一次只允許發(fā)送一個包，一個擁塞序列，以警告所有 的節(jié)點）

1B30035H01

聯(lián)系人：郭先生
聯(lián)系電話：18971415643《優(yōu)先》
座機：027-83238871
傳真：207-61537051
QQ：810334512《優(yōu)先》

1B30035H01

【隨機圖片】【隨機圖片】

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