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<p class=MsoNormal><span style='font-family:宋體;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman"'>由于需要一個個端口地指定，因此當(dāng)網(wǎng)絡(luò)中的計算機數(shù)目超過一定數(shù)字（比如數(shù)百臺）后，設(shè)定操作就會變得煩雜無比。并且，客戶機每次變更所連端口，都必須同時更改該端口所屬</span><span
lang=EN-US>VLAN</span><span style='font-family:宋體;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman"'>的設(shè)定——這顯然<span style='color:red'>不適合那些需要頻繁改變<span
class=GramE>拓補結(jié)構(gòu)</span>的網(wǎng)絡(luò)</span>。</span></p>

<p class=MsoNormal><span lang=EN-US><o:p>&nbsp;</o:p></span></p>

<p class=MsoNormal><b style='mso-bidi-font-weight:normal'><span
style='font-size:12.0pt;font-family:宋體;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman";color:red'>動態(tài)</span></b><b
style='mso-bidi-font-weight:normal'><span lang=EN-US style='font-size:12.0pt;
color:red'>VLAN<o:p></o:p></span></b></p>

<p class=MsoNormal><span style='font-family:宋體;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman"'>另一方面，<span style='color:blue'>動態(tài)</span></span><span
lang=EN-US style='color:blue'>VLAN</span><span style='font-family:宋體;
mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman";
color:blue'>則是根據(jù)每個端口所連的計算機，隨時改變端口所屬的</span><span lang=EN-US style='color:blue'>VLAN</span><span
style='font-family:宋體;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman"'>。這就可以避免上述的更改設(shè)定之類的操作。動態(tài)</span><span lang=EN-US>VLAN</span><span
style='font-family:宋體;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman"'>可以大致分為</span><span lang=EN-US>3</span><span
style='font-family:宋體;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman"'>類：</span></p>

<p class=MsoNormal><span lang=EN-US><o:p>&nbsp;</o:p></span></p>

<p class=MsoNormal style='margin-left:21.0pt;text-indent:-21.0pt;mso-list:l1 level1 lfo6;
tab-stops:list 21.0pt'><![if !supportLists]><span lang=EN-US style='mso-bidi-font-size:
10.5pt;font-family:Wingdings;mso-fareast-font-family:Wingdings;mso-bidi-font-family:
Wingdings'><span style='mso-list:Ignore'>l<span style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span></span></span><![endif]><span style='mso-bidi-font-size:10.5pt;
font-family:宋體;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman"'>基于</span><span lang=EN-US style='mso-bidi-font-size:10.5pt'>MAC</span><span
style='mso-bidi-font-size:10.5pt;font-family:宋體;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman"'>地址的</span><span lang=EN-US
style='mso-bidi-font-size:10.5pt'>VLAN</span><span class=GramE><span
style='mso-bidi-font-size:10.5pt;font-family:宋體;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman"'>（</span></span><span lang=EN-US
style='mso-bidi-font-size:10.5pt'>MAC Based VLAN</span><span style='mso-bidi-font-size:
10.5pt;font-family:宋體;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: