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大家經(jīng)常會(huì)聽到二層網(wǎng)絡(luò)、三層網(wǎng)絡(luò)的說(shuō)法，我們這里提到的二層、三層是按照邏輯拓?fù)浣Y(jié)構(gòu)進(jìn)行的分類，并不是ISO七層模型中的數(shù)據(jù)鏈路層和網(wǎng)絡(luò)層，而是指核心層、匯聚層和接入層。這三層都部署的就是三層網(wǎng)絡(luò)結(jié)構(gòu)，二層網(wǎng)絡(luò)結(jié)構(gòu)沒有匯聚層。讓我們大家一起來(lái)看看二層網(wǎng)絡(luò)和…
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