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<p class=MsoNormal align=left style='text-align:left;mso-pagination:widow-orphan'><span
style='font-family:宋體'>分析這個(gè)物理結(jié)構(gòu)并轉(zhuǎn)換成以路由器為中心的邏輯結(jié)構(gòu)后，會(huì)得到如下的邏輯結(jié)構(gòu)圖。當(dāng)我們需要<span
style='color:blue'>進(jìn)行路由或是數(shù)據(jù)包過(guò)濾的設(shè)定時(shí)，都必須在邏輯結(jié)構(gòu)的基礎(chǔ)上進(jìn)行</span>。<span lang=EN-US><o:p></o:p></span></span></p>

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