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     <p class=MsoNormal><span lang=EN-US>VLAN2</span></p>
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     <p class=MsoNormal><span style='font-family:宋体;mso-ascii-font-family:"Times New Roman";
     mso-hansi-font-family:"Times New Roman";color:blue'>将交换机的每个端口静态指派给</span><span
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     <p class=MsoNormal><span lang=EN-US>VLAN1</span></p>
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<p class=MsoNormal><span style='font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman"'>由于需要一个个端口地指定，因此当网络中的计算机数目超过一定数字（比如数百台）后，设定操作就会变得烦杂无比。并且，客户机每次变更所连端口，都必须同时更改该端口所属</span><span
lang=EN-US>VLAN</span><span style='font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman"'>的设定——这显然<span style='color:red'>不适合那些需要频繁改变<span
class=GramE>拓补结构</span>的网络</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:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman";color:red'>动态</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:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman"'>另一方面，<span style='color:blue'>动态</span></span><span
lang=EN-US style='color:blue'>VLAN</span><span style='font-family:宋体;
mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman";
color:blue'>则是根据每个端口所连的计算机，随时改变端口所属的</span><span lang=EN-US style='color:blue'>VLAN</span><span
style='font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman"'>。这就可以避免上述的更改设定之类的操作。动态</span><span lang=EN-US>VLAN</span><span
style='font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman"'>可以大致分为</span><span lang=EN-US>3</span><span
style='font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman"'>类：</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:宋体;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:宋体;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:宋体;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:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: